``IA64_THREAD_UAC_NOPRINT`` ``prctl`` and avoid logs being flooded.
+io_uring_disabled
+=================
+
+Prevents all processes from creating new io_uring instances. Enabling this
+shrinks the kernel's attack surface.
+
+= ======================================================================
+0 All processes can create io_uring instances as normal. This is the
+ default setting.
+1 io_uring creation is disabled (io_uring_setup() will fail with
+ -EPERM) for unprivileged processes not in the io_uring_group group.
+ Existing io_uring instances can still be used. See the
+ documentation for io_uring_group for more information.
+2 io_uring creation is disabled for all processes. io_uring_setup()
+ always fails with -EPERM. Existing io_uring instances can still be
+ used.
+= ======================================================================
+
+
+io_uring_group
+==============
+
+When io_uring_disabled is set to 1, a process must either be
+privileged (CAP_SYS_ADMIN) or be in the io_uring_group group in order
+to create an io_uring instance. If io_uring_group is set to -1 (the
+default), only processes with the CAP_SYS_ADMIN capability may create
+io_uring instances.
+
+
kexec_load_disabled
===================
Architectures
~~~~~~~~~~~~~
-Generic KASAN is supported on x86_64, arm, arm64, powerpc, riscv, s390, and
-xtensa, and the tag-based KASAN modes are supported only on arm64.
+Generic KASAN is supported on x86_64, arm, arm64, powerpc, riscv, s390, xtensa,
+and loongarch, and the tag-based KASAN modes are supported only on arm64.
Compilers
~~~~~~~~~
pattern: "^easrc@.*"
compatible:
- const: fsl,imx8mn-easrc
+ oneOf:
+ - enum:
+ - fsl,imx8mn-easrc
+ - items:
+ - enum:
+ - fsl,imx8mp-easrc
+ - const: fsl,imx8mn-easrc
reg:
maxItems: 1
| csky: | TODO |
| hexagon: | TODO |
| ia64: | TODO |
- | loongarch: | TODO |
+ | loongarch: | ok |
| m68k: | TODO |
| microblaze: | TODO |
| mips: | TODO |
| csky: | TODO |
| hexagon: | TODO |
| ia64: | TODO |
- | loongarch: | TODO |
+ | loongarch: | ok |
| m68k: | TODO |
| microblaze: | TODO |
| mips: | ok |
| csky: | TODO |
| hexagon: | ok |
| ia64: | TODO |
- | loongarch: | TODO |
+ | loongarch: | ok |
| m68k: | TODO |
| microblaze: | ok |
| mips: | ok |
体系架构
~~~~~~~~
-在x86_64、arm、arm64、powerpc、riscv、s390和xtensa上支持通用KASAN，
+在x86_64、arm、arm64、powerpc、riscv、s390、xtensa和loongarch上支持通用KASAN，
而基于标签的KASAN模式只在arm64上支持。
编译器
TEXAS INSTRUMENTS AUDIO (ASoC/HDA) DRIVERS
M: Shenghao Ding <shenghao-ding@ti.com>
M: Kevin Lu <kevin-lu@ti.com>
-M: Baojun Xu <x1077012@ti.com>
+M: Baojun Xu <baojun.xu@ti.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/sound/tas2552.txt
if (!len)
return;
- len = strscpy(buf, cmdline, ARRAY_SIZE(buf));
- if (len == -E2BIG)
- len = ARRAY_SIZE(buf) - 1;
+ len = min(len, ARRAY_SIZE(buf) - 1);
+ memcpy(buf, cmdline, len);
+ buf[len] = '\0';
if (strcmp(buf, "--") == 0)
return;
const u64 *ptr;
u64 data, sum64 = 0;
- if (unlikely(len == 0))
+ if (unlikely(len <= 0))
return 0;
offset = (unsigned long)buff & 7;
select ACPI_PPTT if ACPI
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_BINFMT_ELF_STATE
+ select ARCH_DISABLE_KASAN_INLINE
select ARCH_ENABLE_MEMORY_HOTPLUG
select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_CPU_FINALIZE_INIT
select ARCH_HAS_FORTIFY_SOURCE
+ select ARCH_HAS_KCOV
select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_PTE_SPECIAL
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
+ select HAVE_ARCH_KASAN
+ select HAVE_ARCH_KFENCE
+ select HAVE_ARCH_KGDB if PERF_EVENTS
select HAVE_ARCH_MMAP_RND_BITS if MMU
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_TRACER
+ select HAVE_GCC_PLUGINS
select HAVE_GENERIC_VDSO
select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_IOREMAP_PROT
config AS_HAS_LASX_EXTENSION
def_bool $(as-instr,xvld \$xr0$(comma)\$a0$(comma)0)
+config AS_HAS_LBT_EXTENSION
+ def_bool $(as-instr,movscr2gr \$a0$(comma)\$scr0)
+
menu "Kernel type and options"
source "kernel/Kconfig.hz"
If unsure, say Y.
+config CPU_HAS_LBT
+ bool "Support for the Loongson Binary Translation Extension"
+ depends on AS_HAS_LBT_EXTENSION
+ help
+ Loongson Binary Translation (LBT) introduces 4 scratch registers (SCR0
+ to SCR3), x86/ARM eflags (eflags) and x87 fpu stack pointer (ftop).
+ Enabling this option allows the kernel to allocate and switch registers
+ specific to LBT.
+
+ If you want to use this feature, such as the Loongson Architecture
+ Translator (LAT), say Y.
+
config CPU_HAS_PREFETCH
bool
default y
config ARCH_SUPPORTS_UPROBES
def_bool y
+config KASAN_SHADOW_OFFSET
+ hex
+ default 0x0
+ depends on KASAN
+
menu "Power management options"
config ARCH_SUSPEND_POSSIBLE
endif
cflags-y += $(call cc-option, -mno-check-zero-division)
+
+ifndef CONFIG_KASAN
cflags-y += -fno-builtin-memcpy -fno-builtin-memmove -fno-builtin-memset
+endif
load-y = 0x9000000000200000
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y)
CONFIG_USER_NS=y
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_SCHED_AUTOGROUP=y
-CONFIG_SYSFS_DEPRECATED=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_HOTPLUG_CPU=y
CONFIG_NR_CPUS=64
CONFIG_NUMA=y
+CONFIG_CPU_HAS_FPU=y
+CONFIG_CPU_HAS_LSX=y
+CONFIG_CPU_HAS_LASX=y
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
+CONFIG_RANDOMIZE_BASE=y
CONFIG_SUSPEND=y
CONFIG_HIBERNATION=y
CONFIG_ACPI=y
CONFIG_EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER=y
CONFIG_EFI_CAPSULE_LOADER=m
CONFIG_EFI_TEST=m
+CONFIG_JUMP_LABEL=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_IP_PNP_RARP=y
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
CONFIG_INET_ESP=m
CONFIG_INET_UDP_DIAG=y
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_NFT_REDIR=m
CONFIG_NFT_NAT=m
CONFIG_NFT_TUNNEL=m
-CONFIG_NFT_OBJREF=m
CONFIG_NFT_QUEUE=m
CONFIG_NFT_QUOTA=m
CONFIG_NFT_REJECT=m
CONFIG_IP_VS_IPV6=y
CONFIG_IP_VS_PROTO_TCP=y
CONFIG_IP_VS_PROTO_UDP=y
+CONFIG_IP_VS_PROTO_ESP=y
+CONFIG_IP_VS_PROTO_AH=y
+CONFIG_IP_VS_PROTO_SCTP=y
CONFIG_IP_VS_RR=m
+CONFIG_IP_VS_WRR=m
CONFIG_IP_VS_NFCT=y
CONFIG_NF_TABLES_IPV4=y
CONFIG_NFT_DUP_IPV4=m
CONFIG_IP_NF_TARGET_NETMAP=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_IP_NF_MANGLE=m
-CONFIG_IP_NF_TARGET_CLUSTERIP=m
CONFIG_IP_NF_TARGET_ECN=m
CONFIG_IP_NF_TARGET_TTL=m
CONFIG_IP_NF_RAW=m
CONFIG_MTD_CFI_STAA=m
CONFIG_MTD_RAM=m
CONFIG_MTD_ROM=m
+CONFIG_MTD_UBI=m
+CONFIG_MTD_UBI_BLOCK=y
CONFIG_PARPORT=y
CONFIG_PARPORT_PC=y
CONFIG_PARPORT_SERIAL=y
CONFIG_ZRAM=m
CONFIG_ZRAM_DEF_COMP_ZSTD=y
CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_DRBD=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=8192
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
+CONFIG_NGBE=y
+CONFIG_TXGBE=y
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_NET_VENDOR_XILINX is not set
CONFIG_PPP=m
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_PIIX4=y
CONFIG_I2C_GPIO=y
+CONFIG_I2C_LS2X=y
CONFIG_SPI=y
+CONFIG_SPI_LOONGSON_PCI=m
+CONFIG_SPI_LOONGSON_PLATFORM=m
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_LOONGSON2=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_LOONGSON=y
+CONFIG_GPIO_LOONGSON_64BIT=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_RESTART=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_SENSORS_LM93=m
CONFIG_SENSORS_W83795=m
CONFIG_SENSORS_W83627HF=m
+CONFIG_LOONGSON2_THERMAL=m
CONFIG_RC_CORE=m
CONFIG_LIRC=y
CONFIG_RC_DECODERS=y
CONFIG_DRM_AST=y
CONFIG_DRM_QXL=m
CONFIG_DRM_VIRTIO_GPU=m
+CONFIG_DRM_LOONGSON=y
CONFIG_FB=y
CONFIG_FB_EFI=y
CONFIG_FB_RADEON=y
CONFIG_INFINIBAND=m
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_EFI=y
+CONFIG_RTC_DRV_LOONGSON=y
CONFIG_DMADEVICES=y
CONFIG_UIO=m
CONFIG_UIO_PDRV_GENIRQ=m
CONFIG_COMEDI_NI_PCIDIO=m
CONFIG_COMEDI_NI_PCIMIO=m
CONFIG_STAGING=y
-CONFIG_R8188EU=m
+CONFIG_COMMON_CLK_LOONGSON2=y
+CONFIG_LOONGSON2_GUTS=y
+CONFIG_LOONGSON2_PM=y
CONFIG_PM_DEVFREQ=y
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
CONFIG_DEVFREQ_GOV_PERFORMANCE=y
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
+CONFIG_JFS_FS=m
+CONFIG_JFS_POSIX_ACL=y
+CONFIG_JFS_SECURITY=y
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
+CONFIG_GFS2_FS=m
+CONFIG_GFS2_FS_LOCKING_DLM=y
+CONFIG_OCFS2_FS=m
CONFIG_BTRFS_FS=y
+CONFIG_BTRFS_FS_POSIX_ACL=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_QFMT_V2=m
CONFIG_AUTOFS_FS=y
CONFIG_FUSE_FS=m
+CONFIG_CUSE=m
+CONFIG_VIRTIO_FS=m
CONFIG_OVERLAY_FS=y
CONFIG_OVERLAY_FS_INDEX=y
CONFIG_OVERLAY_FS_XINO_AUTO=y
CONFIG_OVERLAY_FS_METACOPY=y
CONFIG_FSCACHE=y
+CONFIG_CACHEFILES=m
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=936
CONFIG_FAT_DEFAULT_IOCHARSET="gb2312"
+CONFIG_EXFAT_FS=m
+CONFIG_NTFS3_FS=m
+CONFIG_NTFS3_64BIT_CLUSTER=y
+CONFIG_NTFS3_LZX_XPRESS=y
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_CONFIGFS_FS=y
+CONFIG_ORANGEFS_FS=m
+CONFIG_ECRYPT_FS=m
+CONFIG_ECRYPT_FS_MESSAGING=y
CONFIG_HFS_FS=m
CONFIG_HFSPLUS_FS=m
+CONFIG_UBIFS_FS=m
+CONFIG_UBIFS_FS_ADVANCED_COMPR=y
CONFIG_CRAMFS=m
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_XATTR=y
CONFIG_SQUASHFS_LZ4=y
CONFIG_SQUASHFS_LZO=y
CONFIG_SQUASHFS_XZ=y
+CONFIG_MINIX_FS=m
+CONFIG_ROMFS_FS=m
+CONFIG_PSTORE=m
+CONFIG_PSTORE_LZO_COMPRESS=m
+CONFIG_PSTORE_LZ4_COMPRESS=m
+CONFIG_PSTORE_LZ4HC_COMPRESS=m
+CONFIG_PSTORE_842_COMPRESS=y
+CONFIG_PSTORE_ZSTD_COMPRESS=y
+CONFIG_PSTORE_ZSTD_COMPRESS_DEFAULT=y
+CONFIG_SYSV_FS=m
+CONFIG_UFS_FS=m
+CONFIG_EROFS_FS=m
+CONFIG_EROFS_FS_ZIP_LZMA=y
+CONFIG_EROFS_FS_PCPU_KTHREAD=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_NFSD_V3_ACL=y
CONFIG_NFSD_V4=y
CONFIG_NFSD_BLOCKLAYOUT=y
+CONFIG_CEPH_FS=m
+CONFIG_CEPH_FSCACHE=y
+CONFIG_CEPH_FS_POSIX_ACL=y
+CONFIG_CEPH_FS_SECURITY_LABEL=y
CONFIG_CIFS=m
# CONFIG_CIFS_DEBUG is not set
CONFIG_9P_FS=y
CONFIG_NLS_CODEPAGE_936=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_UTF8=y
+CONFIG_DLM=m
CONFIG_KEY_DH_OPERATIONS=y
CONFIG_SECURITY=y
CONFIG_SECURITY_SELINUX=y
CONFIG_CRYPTO_USER_API_SKCIPHER=m
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
+CONFIG_CRYPTO_CRC32_LOONGARCH=m
CONFIG_CRYPTO_DEV_VIRTIO=m
CONFIG_PRINTK_TIME=y
CONFIG_STRIP_ASM_SYMS=y
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/uaccess.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
#include <asm/mmu_context.h>
#include <asm/page.h>
#include <asm/ftrace.h>
#include <asm/fpregdef.h>
#include <asm/loongarch.h>
- .macro parse_v var val
- \var = \val
- .endm
-
- .macro parse_r var r
- \var = -1
- .ifc \r, $r0
- \var = 0
- .endif
- .ifc \r, $r1
- \var = 1
- .endif
- .ifc \r, $r2
- \var = 2
- .endif
- .ifc \r, $r3
- \var = 3
- .endif
- .ifc \r, $r4
- \var = 4
- .endif
- .ifc \r, $r5
- \var = 5
- .endif
- .ifc \r, $r6
- \var = 6
- .endif
- .ifc \r, $r7
- \var = 7
- .endif
- .ifc \r, $r8
- \var = 8
- .endif
- .ifc \r, $r9
- \var = 9
- .endif
- .ifc \r, $r10
- \var = 10
- .endif
- .ifc \r, $r11
- \var = 11
- .endif
- .ifc \r, $r12
- \var = 12
- .endif
- .ifc \r, $r13
- \var = 13
- .endif
- .ifc \r, $r14
- \var = 14
- .endif
- .ifc \r, $r15
- \var = 15
- .endif
- .ifc \r, $r16
- \var = 16
- .endif
- .ifc \r, $r17
- \var = 17
- .endif
- .ifc \r, $r18
- \var = 18
- .endif
- .ifc \r, $r19
- \var = 19
- .endif
- .ifc \r, $r20
- \var = 20
- .endif
- .ifc \r, $r21
- \var = 21
- .endif
- .ifc \r, $r22
- \var = 22
- .endif
- .ifc \r, $r23
- \var = 23
- .endif
- .ifc \r, $r24
- \var = 24
- .endif
- .ifc \r, $r25
- \var = 25
- .endif
- .ifc \r, $r26
- \var = 26
- .endif
- .ifc \r, $r27
- \var = 27
- .endif
- .ifc \r, $r28
- \var = 28
- .endif
- .ifc \r, $r29
- \var = 29
- .endif
- .ifc \r, $r30
- \var = 30
- .endif
- .ifc \r, $r31
- \var = 31
- .endif
- .iflt \var
- .error "Unable to parse register name \r"
- .endif
- .endm
-
.macro cpu_save_nonscratch thread
stptr.d s0, \thread, THREAD_REG23
stptr.d s1, \thread, THREAD_REG24
.macro fpu_save_csr thread tmp
movfcsr2gr \tmp, fcsr0
- stptr.w \tmp, \thread, THREAD_FCSR
+ stptr.w \tmp, \thread, THREAD_FCSR
+#ifdef CONFIG_CPU_HAS_LBT
+ /* TM bit is always 0 if LBT not supported */
+ andi \tmp, \tmp, FPU_CSR_TM
+ beqz \tmp, 1f
+ /* Save FTOP */
+ x86mftop \tmp
+ stptr.w \tmp, \thread, THREAD_FTOP
+ /* Turn off TM to ensure the order of FPR in memory independent of TM */
+ x86clrtm
+1:
+#endif
.endm
- .macro fpu_restore_csr thread tmp
- ldptr.w \tmp, \thread, THREAD_FCSR
- movgr2fcsr fcsr0, \tmp
+ .macro fpu_restore_csr thread tmp0 tmp1
+ ldptr.w \tmp0, \thread, THREAD_FCSR
+ movgr2fcsr fcsr0, \tmp0
+#ifdef CONFIG_CPU_HAS_LBT
+ /* TM bit is always 0 if LBT not supported */
+ andi \tmp0, \tmp0, FPU_CSR_TM
+ beqz \tmp0, 2f
+ /* Restore FTOP */
+ ldptr.w \tmp0, \thread, THREAD_FTOP
+ andi \tmp0, \tmp0, 0x7
+ la.pcrel \tmp1, 1f
+ alsl.d \tmp1, \tmp0, \tmp1, 3
+ jr \tmp1
+1:
+ x86mttop 0
+ b 2f
+ x86mttop 1
+ b 2f
+ x86mttop 2
+ b 2f
+ x86mttop 3
+ b 2f
+ x86mttop 4
+ b 2f
+ x86mttop 5
+ b 2f
+ x86mttop 6
+ b 2f
+ x86mttop 7
+2:
+#endif
.endm
.macro fpu_save_cc thread tmp0 tmp1
.macro lsx_restore_all thread tmp0 tmp1
lsx_restore_data \thread, \tmp0
fpu_restore_cc \thread, \tmp0, \tmp1
- fpu_restore_csr \thread, \tmp0
+ fpu_restore_csr \thread, \tmp0, \tmp1
.endm
.macro lsx_save_upper vd base tmp off
.macro lasx_restore_all thread tmp0 tmp1
lasx_restore_data \thread, \tmp0
fpu_restore_cc \thread, \tmp0, \tmp1
- fpu_restore_csr \thread, \tmp0
+ fpu_restore_csr \thread, \tmp0, \tmp1
.endm
.macro lasx_save_upper xd base tmp off
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_KASAN_H
+#define __ASM_KASAN_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/linkage.h>
+#include <linux/mmzone.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+
+#define __HAVE_ARCH_SHADOW_MAP
+
+#define KASAN_SHADOW_SCALE_SHIFT 3
+#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
+
+#define XRANGE_SHIFT (48)
+
+/* Valid address length */
+#define XRANGE_SHADOW_SHIFT (PGDIR_SHIFT + PAGE_SHIFT - 3)
+/* Used for taking out the valid address */
+#define XRANGE_SHADOW_MASK GENMASK_ULL(XRANGE_SHADOW_SHIFT - 1, 0)
+/* One segment whole address space size */
+#define XRANGE_SIZE (XRANGE_SHADOW_MASK + 1)
+
+/* 64-bit segment value. */
+#define XKPRANGE_UC_SEG (0x8000)
+#define XKPRANGE_CC_SEG (0x9000)
+#define XKVRANGE_VC_SEG (0xffff)
+
+/* Cached */
+#define XKPRANGE_CC_START CACHE_BASE
+#define XKPRANGE_CC_SIZE XRANGE_SIZE
+#define XKPRANGE_CC_KASAN_OFFSET (0)
+#define XKPRANGE_CC_SHADOW_SIZE (XKPRANGE_CC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
+#define XKPRANGE_CC_SHADOW_END (XKPRANGE_CC_KASAN_OFFSET + XKPRANGE_CC_SHADOW_SIZE)
+
+/* UnCached */
+#define XKPRANGE_UC_START UNCACHE_BASE
+#define XKPRANGE_UC_SIZE XRANGE_SIZE
+#define XKPRANGE_UC_KASAN_OFFSET XKPRANGE_CC_SHADOW_END
+#define XKPRANGE_UC_SHADOW_SIZE (XKPRANGE_UC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
+#define XKPRANGE_UC_SHADOW_END (XKPRANGE_UC_KASAN_OFFSET + XKPRANGE_UC_SHADOW_SIZE)
+
+/* VMALLOC (Cached or UnCached) */
+#define XKVRANGE_VC_START MODULES_VADDR
+#define XKVRANGE_VC_SIZE round_up(KFENCE_AREA_END - MODULES_VADDR + 1, PGDIR_SIZE)
+#define XKVRANGE_VC_KASAN_OFFSET XKPRANGE_UC_SHADOW_END
+#define XKVRANGE_VC_SHADOW_SIZE (XKVRANGE_VC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
+#define XKVRANGE_VC_SHADOW_END (XKVRANGE_VC_KASAN_OFFSET + XKVRANGE_VC_SHADOW_SIZE)
+
+/* KAsan shadow memory start right after vmalloc. */
+#define KASAN_SHADOW_START round_up(KFENCE_AREA_END, PGDIR_SIZE)
+#define KASAN_SHADOW_SIZE (XKVRANGE_VC_SHADOW_END - XKPRANGE_CC_KASAN_OFFSET)
+#define KASAN_SHADOW_END round_up(KASAN_SHADOW_START + KASAN_SHADOW_SIZE, PGDIR_SIZE)
+
+#define XKPRANGE_CC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_CC_KASAN_OFFSET)
+#define XKPRANGE_UC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_UC_KASAN_OFFSET)
+#define XKVRANGE_VC_SHADOW_OFFSET (KASAN_SHADOW_START + XKVRANGE_VC_KASAN_OFFSET)
+
+extern bool kasan_early_stage;
+extern unsigned char kasan_early_shadow_page[PAGE_SIZE];
+
+#define kasan_arch_is_ready kasan_arch_is_ready
+static __always_inline bool kasan_arch_is_ready(void)
+{
+ return !kasan_early_stage;
+}
+
+static inline void *kasan_mem_to_shadow(const void *addr)
+{
+ if (!kasan_arch_is_ready()) {
+ return (void *)(kasan_early_shadow_page);
+ } else {
+ unsigned long maddr = (unsigned long)addr;
+ unsigned long xrange = (maddr >> XRANGE_SHIFT) & 0xffff;
+ unsigned long offset = 0;
+
+ maddr &= XRANGE_SHADOW_MASK;
+ switch (xrange) {
+ case XKPRANGE_CC_SEG:
+ offset = XKPRANGE_CC_SHADOW_OFFSET;
+ break;
+ case XKPRANGE_UC_SEG:
+ offset = XKPRANGE_UC_SHADOW_OFFSET;
+ break;
+ case XKVRANGE_VC_SEG:
+ offset = XKVRANGE_VC_SHADOW_OFFSET;
+ break;
+ default:
+ WARN_ON(1);
+ return NULL;
+ }
+
+ return (void *)((maddr >> KASAN_SHADOW_SCALE_SHIFT) + offset);
+ }
+}
+
+static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
+{
+ unsigned long addr = (unsigned long)shadow_addr;
+
+ if (unlikely(addr > KASAN_SHADOW_END) ||
+ unlikely(addr < KASAN_SHADOW_START)) {
+ WARN_ON(1);
+ return NULL;
+ }
+
+ if (addr >= XKVRANGE_VC_SHADOW_OFFSET)
+ return (void *)(((addr - XKVRANGE_VC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKVRANGE_VC_START);
+ else if (addr >= XKPRANGE_UC_SHADOW_OFFSET)
+ return (void *)(((addr - XKPRANGE_UC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_UC_START);
+ else if (addr >= XKPRANGE_CC_SHADOW_OFFSET)
+ return (void *)(((addr - XKPRANGE_CC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_CC_START);
+ else {
+ WARN_ON(1);
+ return NULL;
+ }
+}
+
+void kasan_init(void);
+asmlinkage void kasan_early_init(void);
+
+#endif
+#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KFENCE support for LoongArch.
+ *
+ * Author: Enze Li <lienze@kylinos.cn>
+ * Copyright (C) 2022-2023 KylinSoft Corporation.
+ */
+
+#ifndef _ASM_LOONGARCH_KFENCE_H
+#define _ASM_LOONGARCH_KFENCE_H
+
+#include <linux/kfence.h>
+#include <asm/pgtable.h>
+#include <asm/tlb.h>
+
+static inline bool arch_kfence_init_pool(void)
+{
+ int err;
+ char *kfence_pool = __kfence_pool;
+ struct vm_struct *area;
+
+ area = __get_vm_area_caller(KFENCE_POOL_SIZE, VM_IOREMAP,
+ KFENCE_AREA_START, KFENCE_AREA_END,
+ __builtin_return_address(0));
+ if (!area)
+ return false;
+
+ __kfence_pool = (char *)area->addr;
+ err = ioremap_page_range((unsigned long)__kfence_pool,
+ (unsigned long)__kfence_pool + KFENCE_POOL_SIZE,
+ virt_to_phys((void *)kfence_pool), PAGE_KERNEL);
+ if (err) {
+ free_vm_area(area);
+ __kfence_pool = kfence_pool;
+ return false;
+ }
+
+ return true;
+}
+
+/* Protect the given page and flush TLB. */
+static inline bool kfence_protect_page(unsigned long addr, bool protect)
+{
+ pte_t *pte = virt_to_kpte(addr);
+
+ if (WARN_ON(!pte) || pte_none(*pte))
+ return false;
+
+ if (protect)
+ set_pte(pte, __pte(pte_val(*pte) & ~(_PAGE_VALID | _PAGE_PRESENT)));
+ else
+ set_pte(pte, __pte(pte_val(*pte) | (_PAGE_VALID | _PAGE_PRESENT)));
+
+ preempt_disable();
+ local_flush_tlb_one(addr);
+ preempt_enable();
+
+ return true;
+}
+
+#endif /* _ASM_LOONGARCH_KFENCE_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#ifndef _ASM_LOONGARCH_KGDB_H
+#define _ASM_LOONGARCH_KGDB_H
+
+#define GDB_SIZEOF_REG sizeof(u64)
+
+/* gdb remote procotol expects the following register layout. */
+
+/*
+ * General purpose registers:
+ * r0-r31: 64 bit
+ * orig_a0: 64 bit
+ * pc : 64 bit
+ * csr_badvaddr: 64 bit
+ */
+#define DBG_PT_REGS_BASE 0
+#define DBG_PT_REGS_NUM 35
+#define DBG_PT_REGS_END (DBG_PT_REGS_BASE + DBG_PT_REGS_NUM - 1)
+
+/*
+ * Floating point registers:
+ * f0-f31: 64 bit
+ */
+#define DBG_FPR_BASE (DBG_PT_REGS_END + 1)
+#define DBG_FPR_NUM 32
+#define DBG_FPR_END (DBG_FPR_BASE + DBG_FPR_NUM - 1)
+
+/*
+ * Condition Flag registers:
+ * fcc0-fcc8: 8 bit
+ */
+#define DBG_FCC_BASE (DBG_FPR_END + 1)
+#define DBG_FCC_NUM 8
+#define DBG_FCC_END (DBG_FCC_BASE + DBG_FCC_NUM - 1)
+
+/*
+ * Floating-point Control and Status registers:
+ * fcsr: 32 bit
+ */
+#define DBG_FCSR_NUM 1
+#define DBG_FCSR (DBG_FCC_END + 1)
+
+#define DBG_MAX_REG_NUM (DBG_FCSR + 1)
+
+/*
+ * Size of I/O buffer for gdb packet.
+ * considering to hold all register contents, size is set
+ */
+#define BUFMAX 2048
+
+/*
+ * Number of bytes required for gdb_regs buffer.
+ * PT_REGS and FPR: 8 bytes; FCSR: 4 bytes; FCC: 1 bytes.
+ * GDB fails to connect for size beyond this with error
+ * "'g' packet reply is too long"
+ */
+#define NUMREGBYTES ((DBG_PT_REGS_NUM + DBG_FPR_NUM) * GDB_SIZEOF_REG + DBG_FCC_NUM * 1 + DBG_FCSR_NUM * 4)
+
+#define BREAK_INSTR_SIZE 4
+#define CACHE_FLUSH_IS_SAFE 0
+
+/* Register numbers of various important registers. */
+enum dbg_loongarch_regnum {
+ DBG_LOONGARCH_ZERO = 0,
+ DBG_LOONGARCH_RA,
+ DBG_LOONGARCH_TP,
+ DBG_LOONGARCH_SP,
+ DBG_LOONGARCH_A0,
+ DBG_LOONGARCH_FP = 22,
+ DBG_LOONGARCH_S0,
+ DBG_LOONGARCH_S1,
+ DBG_LOONGARCH_S2,
+ DBG_LOONGARCH_S3,
+ DBG_LOONGARCH_S4,
+ DBG_LOONGARCH_S5,
+ DBG_LOONGARCH_S6,
+ DBG_LOONGARCH_S7,
+ DBG_LOONGARCH_S8,
+ DBG_LOONGARCH_ORIG_A0,
+ DBG_LOONGARCH_PC,
+ DBG_LOONGARCH_BADV
+};
+
+void kgdb_breakinst(void);
+void arch_kgdb_breakpoint(void);
+
+#ifdef CONFIG_KGDB
+bool kgdb_breakpoint_handler(struct pt_regs *regs);
+#else /* !CONFIG_KGDB */
+static inline bool kgdb_breakpoint_handler(struct pt_regs *regs) { return false; }
+#endif /* CONFIG_KGDB */
+
+#endif /* __ASM_KGDB_H_ */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Author: Qi Hu <huqi@loongson.cn>
+ * Huacai Chen <chenhuacai@loongson.cn>
+ * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
+ */
+#ifndef _ASM_LBT_H
+#define _ASM_LBT_H
+
+#include <asm/cpu.h>
+#include <asm/current.h>
+#include <asm/loongarch.h>
+#include <asm/processor.h>
+
+extern void _init_lbt(void);
+extern void _save_lbt(struct loongarch_lbt *);
+extern void _restore_lbt(struct loongarch_lbt *);
+
+static inline int is_lbt_enabled(void)
+{
+ if (!cpu_has_lbt)
+ return 0;
+
+ return (csr_read32(LOONGARCH_CSR_EUEN) & CSR_EUEN_LBTEN) ?
+ 1 : 0;
+}
+
+static inline int is_lbt_owner(void)
+{
+ return test_thread_flag(TIF_USEDLBT);
+}
+
+#ifdef CONFIG_CPU_HAS_LBT
+
+static inline void enable_lbt(void)
+{
+ if (cpu_has_lbt)
+ csr_xchg32(CSR_EUEN_LBTEN, CSR_EUEN_LBTEN, LOONGARCH_CSR_EUEN);
+}
+
+static inline void disable_lbt(void)
+{
+ if (cpu_has_lbt)
+ csr_xchg32(0, CSR_EUEN_LBTEN, LOONGARCH_CSR_EUEN);
+}
+
+static inline void __own_lbt(void)
+{
+ enable_lbt();
+ set_thread_flag(TIF_USEDLBT);
+ KSTK_EUEN(current) |= CSR_EUEN_LBTEN;
+}
+
+static inline void own_lbt_inatomic(int restore)
+{
+ if (cpu_has_lbt && !is_lbt_owner()) {
+ __own_lbt();
+ if (restore)
+ _restore_lbt(¤t->thread.lbt);
+ }
+}
+
+static inline void own_lbt(int restore)
+{
+ preempt_disable();
+ own_lbt_inatomic(restore);
+ preempt_enable();
+}
+
+static inline void lose_lbt_inatomic(int save, struct task_struct *tsk)
+{
+ if (cpu_has_lbt && is_lbt_owner()) {
+ if (save)
+ _save_lbt(&tsk->thread.lbt);
+
+ disable_lbt();
+ clear_tsk_thread_flag(tsk, TIF_USEDLBT);
+ }
+ KSTK_EUEN(tsk) &= ~(CSR_EUEN_LBTEN);
+}
+
+static inline void lose_lbt(int save)
+{
+ preempt_disable();
+ lose_lbt_inatomic(save, current);
+ preempt_enable();
+}
+
+static inline void init_lbt(void)
+{
+ __own_lbt();
+ _init_lbt();
+}
+#else
+static inline void own_lbt_inatomic(int restore) {}
+static inline void lose_lbt_inatomic(int save, struct task_struct *tsk) {}
+static inline void init_lbt(void) {}
+static inline void lose_lbt(int save) {}
+#endif
+
+static inline int thread_lbt_context_live(void)
+{
+ if (!cpu_has_lbt)
+ return 0;
+
+ return test_thread_flag(TIF_LBT_CTX_LIVE);
+}
+
+#endif /* _ASM_LBT_H */
#ifndef __ASSEMBLY__
#include <larchintrin.h>
-/*
- * parse_r var, r - Helper assembler macro for parsing register names.
- *
- * This converts the register name in $n form provided in \r to the
- * corresponding register number, which is assigned to the variable \var. It is
- * needed to allow explicit encoding of instructions in inline assembly where
- * registers are chosen by the compiler in $n form, allowing us to avoid using
- * fixed register numbers.
- *
- * It also allows newer instructions (not implemented by the assembler) to be
- * transparently implemented using assembler macros, instead of needing separate
- * cases depending on toolchain support.
- *
- * Simple usage example:
- * __asm__ __volatile__("parse_r addr, %0\n\t"
- * "#invtlb op, 0, %0\n\t"
- * ".word ((0x6498000) | (addr << 10) | (0 << 5) | op)"
- * : "=r" (status);
- */
-
-/* Match an individual register number and assign to \var */
-#define _IFC_REG(n) \
- ".ifc \\r, $r" #n "\n\t" \
- "\\var = " #n "\n\t" \
- ".endif\n\t"
-
-__asm__(".macro parse_r var r\n\t"
- "\\var = -1\n\t"
- _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3)
- _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7)
- _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11)
- _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15)
- _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19)
- _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23)
- _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27)
- _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31)
- ".iflt \\var\n\t"
- ".error \"Unable to parse register name \\r\"\n\t"
- ".endif\n\t"
- ".endm");
-
-#undef _IFC_REG
-
/* CPUCFG */
#define read_cpucfg(reg) __cpucfg(reg)
#define FPU_CSR_RU 0x200 /* towards +Infinity */
#define FPU_CSR_RD 0x300 /* towards -Infinity */
+/* Bit 6 of FPU Status Register specify the LBT TOP simulation mode */
+#define FPU_CSR_TM_SHIFT 0x6
+#define FPU_CSR_TM (_ULCAST_(1) << FPU_CSR_TM_SHIFT)
+
#define read_fcsr(source) \
({ \
unsigned int __res; \
#define NODE_DATA(nid) (node_data[(nid)])
-extern void setup_zero_pages(void);
-
#endif /* _ASM_MMZONE_H_ */
#define sym_to_pfn(x) __phys_to_pfn(__pa_symbol(x))
#define virt_to_pfn(kaddr) PFN_DOWN(PHYSADDR(kaddr))
-#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
+
+#define virt_to_page(kaddr) \
+({ \
+ (likely((unsigned long)kaddr < vm_map_base)) ? \
+ dmw_virt_to_page((unsigned long)kaddr) : tlb_virt_to_page((unsigned long)kaddr);\
+})
extern int __virt_addr_valid(volatile void *kaddr);
#define virt_addr_valid(kaddr) __virt_addr_valid((volatile void *)(kaddr))
#endif /* __PAGETABLE_PUD_FOLDED */
+extern pte_t * __init populate_kernel_pte(unsigned long addr);
#endif /* _ASM_PGALLOC_H */
* for zero-mapped memory areas etc..
*/
-extern unsigned long empty_zero_page;
-extern unsigned long zero_page_mask;
+extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
-#define ZERO_PAGE(vaddr) \
- (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
-#define __HAVE_COLOR_ZERO_PAGE
+#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page)
/*
* TLB refill handlers may also map the vmalloc area into xkvrange.
#define MODULES_VADDR (vm_map_base + PCI_IOSIZE + (2 * PAGE_SIZE))
#define MODULES_END (MODULES_VADDR + SZ_256M)
+#ifdef CONFIG_KFENCE
+#define KFENCE_AREA_SIZE (((CONFIG_KFENCE_NUM_OBJECTS + 1) * 2 + 2) * PAGE_SIZE)
+#else
+#define KFENCE_AREA_SIZE 0
+#endif
+
#define VMALLOC_START MODULES_END
+
+#ifndef CONFIG_KASAN
#define VMALLOC_END \
(vm_map_base + \
- min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
+ min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE - KFENCE_AREA_SIZE)
+#else
+#define VMALLOC_END \
+ (vm_map_base + \
+ min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits) / 2) - PMD_SIZE - VMEMMAP_SIZE - KFENCE_AREA_SIZE)
+#endif
#define vmemmap ((struct page *)((VMALLOC_END + PMD_SIZE) & PMD_MASK))
#define VMEMMAP_END ((unsigned long)vmemmap + VMEMMAP_SIZE - 1)
+#define KFENCE_AREA_START (VMEMMAP_END + 1)
+#define KFENCE_AREA_END (KFENCE_AREA_START + KFENCE_AREA_SIZE - 1)
+
#define pte_ERROR(e) \
pr_err("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e))
#ifndef __PAGETABLE_PMD_FOLDED
extern pgd_t swapper_pg_dir[];
extern pgd_t invalid_pg_dir[];
+struct page *dmw_virt_to_page(unsigned long kaddr);
+struct page *tlb_virt_to_page(unsigned long kaddr);
+
/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
}
#endif /* CONFIG_NUMA_BALANCING */
+#define pmd_leaf(pmd) ((pmd_val(pmd) & _PAGE_HUGE) != 0)
+#define pud_leaf(pud) ((pud_val(pud) & _PAGE_HUGE) != 0)
+
/*
* We provide our own get_unmapped area to cope with the virtual aliasing
* constraints placed on us by the cache architecture.
BUILD_FPR_ACCESS(64)
struct loongarch_fpu {
- unsigned int fcsr;
uint64_t fcc; /* 8x8 */
+ uint32_t fcsr;
+ uint32_t ftop;
union fpureg fpr[NUM_FPU_REGS];
};
+struct loongarch_lbt {
+ /* Scratch registers */
+ unsigned long scr0;
+ unsigned long scr1;
+ unsigned long scr2;
+ unsigned long scr3;
+ /* Eflags register */
+ unsigned long eflags;
+};
+
#define INIT_CPUMASK { \
{0,} \
}
unsigned long csr_ecfg;
unsigned long csr_badvaddr; /* Last user fault */
- /* Scratch registers */
- unsigned long scr0;
- unsigned long scr1;
- unsigned long scr2;
- unsigned long scr3;
-
- /* Eflags register */
- unsigned long eflags;
-
/* Other stuff associated with the thread. */
unsigned long trap_nr;
unsigned long error_code;
* context because they are conditionally copied at fork().
*/
struct loongarch_fpu fpu FPU_ALIGN;
+ struct loongarch_lbt lbt; /* Also conditionally copied */
/* Hardware breakpoints pinned to this task. */
struct perf_event *hbp_break[LOONGARCH_MAX_BRP];
* FPU & vector registers \
*/ \
.fpu = { \
- .fcsr = 0, \
.fcc = 0, \
+ .fcsr = 0, \
+ .ftop = 0, \
.fpr = {{{0,},},}, \
}, \
.hbp_break = {0}, \
#define _LOONGARCH_SETUP_H
#include <linux/types.h>
+#include <asm/sections.h>
#include <uapi/asm/setup.h>
#define VECSIZE 0x200
extern long __rela_dyn_begin;
extern long __rela_dyn_end;
-extern void * __init relocate_kernel(void);
+extern unsigned long __init relocate_kernel(void);
#endif
+static inline unsigned long kaslr_offset(void)
+{
+ return (unsigned long)&_text - VMLINUX_LOAD_ADDRESS;
+}
+
#endif /* __SETUP_H */
cfi_st u0, PT_R21, \docfi
csrrd u0, PERCPU_BASE_KS
9:
+#ifdef CONFIG_KGDB
+ li.w t0, CSR_CRMD_WE
+ csrxchg t0, t0, LOONGARCH_CSR_CRMD
+#endif
.endm
.macro SAVE_ALL docfi=0
#define __HAVE_ARCH_MEMSET
extern void *memset(void *__s, int __c, size_t __count);
+extern void *__memset(void *__s, int __c, size_t __count);
#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+extern void *__memcpy(void *__to, __const__ void *__from, size_t __n);
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+extern void *__memmove(void *__dest, __const__ void *__src, size_t __n);
+
+#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
+
+/*
+ * For files that are not instrumented (e.g. mm/slub.c) we
+ * should use not instrumented version of mem* functions.
+ */
+
+#define memset(s, c, n) __memset(s, c, n)
+#define memcpy(dst, src, len) __memcpy(dst, src, len)
+#define memmove(dst, src, len) __memmove(dst, src, len)
+
+#ifndef __NO_FORTIFY
+#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
+#endif
+
+#endif
#endif /* _ASM_STRING_H */
#include <asm/cpu-features.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
struct task_struct;
#define switch_to(prev, next, last) \
do { \
lose_fpu_inatomic(1, prev); \
+ lose_lbt_inatomic(1, prev); \
hw_breakpoint_thread_switch(next); \
(last) = __switch_to(prev, next, task_thread_info(next), \
__builtin_return_address(0), __builtin_frame_address(0)); \
#define TIF_SINGLESTEP 16 /* Single Step */
#define TIF_LSX_CTX_LIVE 17 /* LSX context must be preserved */
#define TIF_LASX_CTX_LIVE 18 /* LASX context must be preserved */
+#define TIF_USEDLBT 19 /* LBT was used by this task this quantum (SMP) */
+#define TIF_LBT_CTX_LIVE 20 /* LBT context must be preserved */
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
#define _TIF_LSX_CTX_LIVE (1<<TIF_LSX_CTX_LIVE)
#define _TIF_LASX_CTX_LIVE (1<<TIF_LASX_CTX_LIVE)
+#define _TIF_USEDLBT (1<<TIF_USEDLBT)
+#define _TIF_LBT_CTX_LIVE (1<<TIF_LBT_CTX_LIVE)
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ */
+#ifndef _ASM_LOONGARCH_XOR_H
+#define _ASM_LOONGARCH_XOR_H
+
+#include <asm/cpu-features.h>
+#include <asm/xor_simd.h>
+
+#ifdef CONFIG_CPU_HAS_LSX
+static struct xor_block_template xor_block_lsx = {
+ .name = "lsx",
+ .do_2 = xor_lsx_2,
+ .do_3 = xor_lsx_3,
+ .do_4 = xor_lsx_4,
+ .do_5 = xor_lsx_5,
+};
+
+#define XOR_SPEED_LSX() \
+ do { \
+ if (cpu_has_lsx) \
+ xor_speed(&xor_block_lsx); \
+ } while (0)
+#else /* CONFIG_CPU_HAS_LSX */
+#define XOR_SPEED_LSX()
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+static struct xor_block_template xor_block_lasx = {
+ .name = "lasx",
+ .do_2 = xor_lasx_2,
+ .do_3 = xor_lasx_3,
+ .do_4 = xor_lasx_4,
+ .do_5 = xor_lasx_5,
+};
+
+#define XOR_SPEED_LASX() \
+ do { \
+ if (cpu_has_lasx) \
+ xor_speed(&xor_block_lasx); \
+ } while (0)
+#else /* CONFIG_CPU_HAS_LASX */
+#define XOR_SPEED_LASX()
+#endif /* CONFIG_CPU_HAS_LASX */
+
+/*
+ * For grins, also test the generic routines.
+ *
+ * More importantly: it cannot be ruled out at this point of time, that some
+ * future (maybe reduced) models could run the vector algorithms slower than
+ * the scalar ones, maybe for errata or micro-op reasons. It may be
+ * appropriate to revisit this after one or two more uarch generations.
+ */
+#include <asm-generic/xor.h>
+
+#undef XOR_TRY_TEMPLATES
+#define XOR_TRY_TEMPLATES \
+do { \
+ xor_speed(&xor_block_8regs); \
+ xor_speed(&xor_block_8regs_p); \
+ xor_speed(&xor_block_32regs); \
+ xor_speed(&xor_block_32regs_p); \
+ XOR_SPEED_LSX(); \
+ XOR_SPEED_LASX(); \
+} while (0)
+
+#endif /* _ASM_LOONGARCH_XOR_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ */
+#ifndef _ASM_LOONGARCH_XOR_SIMD_H
+#define _ASM_LOONGARCH_XOR_SIMD_H
+
+#ifdef CONFIG_CPU_HAS_LSX
+void xor_lsx_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2);
+void xor_lsx_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3);
+void xor_lsx_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4);
+void xor_lsx_5(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4, const unsigned long * __restrict p5);
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+void xor_lasx_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2);
+void xor_lasx_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3);
+void xor_lasx_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4);
+void xor_lasx_5(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4, const unsigned long * __restrict p5);
+#endif /* CONFIG_CPU_HAS_LASX */
+
+#endif /* _ASM_LOONGARCH_XOR_SIMD_H */
uint64_t vregs[32*4];
};
+struct user_lbt_state {
+ uint64_t scr[4];
+ uint32_t eflags;
+ uint32_t ftop;
+};
+
struct user_watch_state {
uint64_t dbg_info;
struct {
__u32 fcsr;
};
+/* LBT context */
+#define LBT_CTX_MAGIC 0x42540001
+#define LBT_CTX_ALIGN 8
+struct lbt_context {
+ __u64 regs[4];
+ __u32 eflags;
+ __u32 ftop;
+};
+
+
#endif /* _UAPI_ASM_SIGCONTEXT_H */
obj-$(CONFIG_CPU_HAS_FPU) += fpu.o kfpu.o
+obj-$(CONFIG_CPU_HAS_LBT) += lbt.o
+
obj-$(CONFIG_ARCH_STRICT_ALIGN) += unaligned.o
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_rethook_trampoline.o = $(CC_FLAGS_FTRACE)
endif
+KASAN_SANITIZE_efi.o := n
+KASAN_SANITIZE_cpu-probe.o := n
+KASAN_SANITIZE_traps.o := n
+KASAN_SANITIZE_smp.o := n
+KASAN_SANITIZE_vdso.o := n
+
obj-$(CONFIG_MODULES) += module.o module-sections.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_regs.o
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
+obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_RETHOOK) += rethook.o rethook_trampoline.o
obj-$(CONFIG_UPROBES) += uprobes.o
OFFSET(THREAD_CSRECFG, task_struct,
thread.csr_ecfg);
- OFFSET(THREAD_SCR0, task_struct, thread.scr0);
- OFFSET(THREAD_SCR1, task_struct, thread.scr1);
- OFFSET(THREAD_SCR2, task_struct, thread.scr2);
- OFFSET(THREAD_SCR3, task_struct, thread.scr3);
-
- OFFSET(THREAD_EFLAGS, task_struct, thread.eflags);
-
OFFSET(THREAD_FPU, task_struct, thread.fpu);
OFFSET(THREAD_BVADDR, task_struct, \
OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
OFFSET(THREAD_FCC, loongarch_fpu, fcc);
+ OFFSET(THREAD_FTOP, loongarch_fpu, ftop);
+ BLANK();
+}
+
+void output_thread_lbt_defines(void)
+{
+ OFFSET(THREAD_SCR0, loongarch_lbt, scr0);
+ OFFSET(THREAD_SCR1, loongarch_lbt, scr1);
+ OFFSET(THREAD_SCR2, loongarch_lbt, scr2);
+ OFFSET(THREAD_SCR3, loongarch_lbt, scr3);
+ OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags);
BLANK();
}
c->options |= LOONGARCH_CPU_LVZ;
elf_hwcap |= HWCAP_LOONGARCH_LVZ;
}
+#ifdef CONFIG_CPU_HAS_LBT
+ if (config & CPUCFG2_X86BT) {
+ c->options |= LOONGARCH_CPU_LBT_X86;
+ elf_hwcap |= HWCAP_LOONGARCH_LBT_X86;
+ }
+ if (config & CPUCFG2_ARMBT) {
+ c->options |= LOONGARCH_CPU_LBT_ARM;
+ elf_hwcap |= HWCAP_LOONGARCH_LBT_ARM;
+ }
+ if (config & CPUCFG2_MIPSBT) {
+ c->options |= LOONGARCH_CPU_LBT_MIPS;
+ elf_hwcap |= HWCAP_LOONGARCH_LBT_MIPS;
+ }
+#endif
config = read_cpucfg(LOONGARCH_CPUCFG6);
if (config & CPUCFG6_PMP)
SAVE_STATIC
+#ifdef CONFIG_KGDB
+ li.w t1, CSR_CRMD_WE
+ csrxchg t1, t1, LOONGARCH_CSR_CRMD
+#endif
+
move u0, t0
li.d tp, ~_THREAD_MASK
and tp, tp, sp
.macro EX insn, reg, src, offs
.ex\@: \insn \reg, \src, \offs
- _asm_extable .ex\@, fault
+ _asm_extable .ex\@, .L_fpu_fault
.endm
.macro sc_save_fp base
.macro sc_save_fcsr base, tmp0
movfcsr2gr \tmp0, fcsr0
EX st.w \tmp0, \base, 0
+#if defined(CONFIG_CPU_HAS_LBT)
+ /* TM bit is always 0 if LBT not supported */
+ andi \tmp0, \tmp0, FPU_CSR_TM
+ beqz \tmp0, 1f
+ x86clrtm
+1:
+#endif
.endm
.macro sc_restore_fcsr base, tmp0
*/
SYM_FUNC_START(_restore_fp)
fpu_restore_double a0 t1 # clobbers t1
- fpu_restore_csr a0 t1
+ fpu_restore_csr a0 t1 t2
fpu_restore_cc a0 t1 t2 # clobbers t1, t2
jr ra
SYM_FUNC_END(_restore_fp)
jr ra
SYM_FUNC_END(_restore_lasx_context)
-SYM_FUNC_START(fault)
+.L_fpu_fault:
li.w a0, -EFAULT # failure
jr ra
-SYM_FUNC_END(fault)
PTR_LI sp, (_THREAD_SIZE - PT_SIZE)
PTR_ADD sp, sp, tp
set_saved_sp sp, t0, t1
-#endif
- /* relocate_kernel() returns the new kernel entry point */
- jr a0
- ASM_BUG()
+ /* Jump to the new kernel: new_pc = current_pc + random_offset */
+ pcaddi t0, 0
+ add.d t0, t0, a0
+ jirl zero, t0, 0xc
+#endif /* CONFIG_RANDOMIZE_BASE */
+
+#endif /* CONFIG_RELOCATABLE */
+#ifdef CONFIG_KASAN
+ bl kasan_early_init
#endif
bl start_kernel
#include <asm/fpu.h>
#include <asm/smp.h>
+static unsigned int euen_mask = CSR_EUEN_FPEN;
+
+/*
+ * The critical section between kernel_fpu_begin() and kernel_fpu_end()
+ * is non-reentrant. It is the caller's responsibility to avoid reentrance.
+ * See drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c as an example.
+ */
static DEFINE_PER_CPU(bool, in_kernel_fpu);
+static DEFINE_PER_CPU(unsigned int, euen_current);
void kernel_fpu_begin(void)
{
+ unsigned int *euen_curr;
+
preempt_disable();
WARN_ON(this_cpu_read(in_kernel_fpu));
this_cpu_write(in_kernel_fpu, true);
+ euen_curr = this_cpu_ptr(&euen_current);
- if (!is_fpu_owner())
- enable_fpu();
+ *euen_curr = csr_xchg32(euen_mask, euen_mask, LOONGARCH_CSR_EUEN);
+
+#ifdef CONFIG_CPU_HAS_LASX
+ if (*euen_curr & CSR_EUEN_LASXEN)
+ _save_lasx(¤t->thread.fpu);
+ else
+#endif
+#ifdef CONFIG_CPU_HAS_LSX
+ if (*euen_curr & CSR_EUEN_LSXEN)
+ _save_lsx(¤t->thread.fpu);
else
+#endif
+ if (*euen_curr & CSR_EUEN_FPEN)
_save_fp(¤t->thread.fpu);
write_fcsr(LOONGARCH_FCSR0, 0);
void kernel_fpu_end(void)
{
+ unsigned int *euen_curr;
+
WARN_ON(!this_cpu_read(in_kernel_fpu));
- if (!is_fpu_owner())
- disable_fpu();
+ euen_curr = this_cpu_ptr(&euen_current);
+
+#ifdef CONFIG_CPU_HAS_LASX
+ if (*euen_curr & CSR_EUEN_LASXEN)
+ _restore_lasx(¤t->thread.fpu);
else
+#endif
+#ifdef CONFIG_CPU_HAS_LSX
+ if (*euen_curr & CSR_EUEN_LSXEN)
+ _restore_lsx(¤t->thread.fpu);
+ else
+#endif
+ if (*euen_curr & CSR_EUEN_FPEN)
_restore_fp(¤t->thread.fpu);
+ *euen_curr = csr_xchg32(*euen_curr, euen_mask, LOONGARCH_CSR_EUEN);
+
this_cpu_write(in_kernel_fpu, false);
preempt_enable();
}
EXPORT_SYMBOL_GPL(kernel_fpu_end);
+
+static int __init init_euen_mask(void)
+{
+ if (cpu_has_lsx)
+ euen_mask |= CSR_EUEN_LSXEN;
+
+ if (cpu_has_lasx)
+ euen_mask |= CSR_EUEN_LASXEN;
+
+ return 0;
+}
+arch_initcall(init_euen_mask);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LoongArch KGDB support
+ *
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#include <linux/hw_breakpoint.h>
+#include <linux/kdebug.h>
+#include <linux/kgdb.h>
+#include <linux/processor.h>
+#include <linux/ptrace.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+
+#include <asm/cacheflush.h>
+#include <asm/fpu.h>
+#include <asm/hw_breakpoint.h>
+#include <asm/inst.h>
+#include <asm/irq_regs.h>
+#include <asm/ptrace.h>
+#include <asm/sigcontext.h>
+
+int kgdb_watch_activated;
+static unsigned int stepped_opcode;
+static unsigned long stepped_address;
+
+struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = {
+ { "r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[0]) },
+ { "r1", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[1]) },
+ { "r2", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[2]) },
+ { "r3", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[3]) },
+ { "r4", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[4]) },
+ { "r5", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[5]) },
+ { "r6", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[6]) },
+ { "r7", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[7]) },
+ { "r8", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[8]) },
+ { "r9", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[9]) },
+ { "r10", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[10]) },
+ { "r11", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[11]) },
+ { "r12", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[12]) },
+ { "r13", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[13]) },
+ { "r14", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[14]) },
+ { "r15", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[15]) },
+ { "r16", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[16]) },
+ { "r17", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[17]) },
+ { "r18", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[18]) },
+ { "r19", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[19]) },
+ { "r20", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[20]) },
+ { "r21", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[21]) },
+ { "r22", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[22]) },
+ { "r23", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[23]) },
+ { "r24", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[24]) },
+ { "r25", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[25]) },
+ { "r26", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[26]) },
+ { "r27", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[27]) },
+ { "r28", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[28]) },
+ { "r29", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[29]) },
+ { "r30", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[30]) },
+ { "r31", GDB_SIZEOF_REG, offsetof(struct pt_regs, regs[31]) },
+ { "orig_a0", GDB_SIZEOF_REG, offsetof(struct pt_regs, orig_a0) },
+ { "pc", GDB_SIZEOF_REG, offsetof(struct pt_regs, csr_era) },
+ { "badv", GDB_SIZEOF_REG, offsetof(struct pt_regs, csr_badvaddr) },
+ { "f0", GDB_SIZEOF_REG, 0 },
+ { "f1", GDB_SIZEOF_REG, 1 },
+ { "f2", GDB_SIZEOF_REG, 2 },
+ { "f3", GDB_SIZEOF_REG, 3 },
+ { "f4", GDB_SIZEOF_REG, 4 },
+ { "f5", GDB_SIZEOF_REG, 5 },
+ { "f6", GDB_SIZEOF_REG, 6 },
+ { "f7", GDB_SIZEOF_REG, 7 },
+ { "f8", GDB_SIZEOF_REG, 8 },
+ { "f9", GDB_SIZEOF_REG, 9 },
+ { "f10", GDB_SIZEOF_REG, 10 },
+ { "f11", GDB_SIZEOF_REG, 11 },
+ { "f12", GDB_SIZEOF_REG, 12 },
+ { "f13", GDB_SIZEOF_REG, 13 },
+ { "f14", GDB_SIZEOF_REG, 14 },
+ { "f15", GDB_SIZEOF_REG, 15 },
+ { "f16", GDB_SIZEOF_REG, 16 },
+ { "f17", GDB_SIZEOF_REG, 17 },
+ { "f18", GDB_SIZEOF_REG, 18 },
+ { "f19", GDB_SIZEOF_REG, 19 },
+ { "f20", GDB_SIZEOF_REG, 20 },
+ { "f21", GDB_SIZEOF_REG, 21 },
+ { "f22", GDB_SIZEOF_REG, 22 },
+ { "f23", GDB_SIZEOF_REG, 23 },
+ { "f24", GDB_SIZEOF_REG, 24 },
+ { "f25", GDB_SIZEOF_REG, 25 },
+ { "f26", GDB_SIZEOF_REG, 26 },
+ { "f27", GDB_SIZEOF_REG, 27 },
+ { "f28", GDB_SIZEOF_REG, 28 },
+ { "f29", GDB_SIZEOF_REG, 29 },
+ { "f30", GDB_SIZEOF_REG, 30 },
+ { "f31", GDB_SIZEOF_REG, 31 },
+ { "fcc0", 1, 0 },
+ { "fcc1", 1, 1 },
+ { "fcc2", 1, 2 },
+ { "fcc3", 1, 3 },
+ { "fcc4", 1, 4 },
+ { "fcc5", 1, 5 },
+ { "fcc6", 1, 6 },
+ { "fcc7", 1, 7 },
+ { "fcsr", 4, 0 },
+};
+
+char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
+{
+ int reg_offset, reg_size;
+
+ if (regno < 0 || regno >= DBG_MAX_REG_NUM)
+ return NULL;
+
+ reg_offset = dbg_reg_def[regno].offset;
+ reg_size = dbg_reg_def[regno].size;
+
+ if (reg_offset == -1)
+ goto out;
+
+ /* Handle general-purpose/orig_a0/pc/badv registers */
+ if (regno <= DBG_PT_REGS_END) {
+ memcpy(mem, (void *)regs + reg_offset, reg_size);
+ goto out;
+ }
+
+ if (!(regs->csr_euen & CSR_EUEN_FPEN))
+ goto out;
+
+ save_fp(current);
+
+ /* Handle FP registers */
+ switch (regno) {
+ case DBG_FCSR: /* Process the fcsr */
+ memcpy(mem, (void *)¤t->thread.fpu.fcsr, reg_size);
+ break;
+ case DBG_FCC_BASE ... DBG_FCC_END: /* Process the fcc */
+ memcpy(mem, (void *)¤t->thread.fpu.fcc + reg_offset, reg_size);
+ break;
+ case DBG_FPR_BASE ... DBG_FPR_END: /* Process the fpr */
+ memcpy(mem, (void *)¤t->thread.fpu.fpr[reg_offset], reg_size);
+ break;
+ default:
+ break;
+ }
+
+out:
+ return dbg_reg_def[regno].name;
+}
+
+int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
+{
+ int reg_offset, reg_size;
+
+ if (regno < 0 || regno >= DBG_MAX_REG_NUM)
+ return -EINVAL;
+
+ reg_offset = dbg_reg_def[regno].offset;
+ reg_size = dbg_reg_def[regno].size;
+
+ if (reg_offset == -1)
+ return 0;
+
+ /* Handle general-purpose/orig_a0/pc/badv registers */
+ if (regno <= DBG_PT_REGS_END) {
+ memcpy((void *)regs + reg_offset, mem, reg_size);
+ return 0;
+ }
+
+ if (!(regs->csr_euen & CSR_EUEN_FPEN))
+ return 0;
+
+ /* Handle FP registers */
+ switch (regno) {
+ case DBG_FCSR: /* Process the fcsr */
+ memcpy((void *)¤t->thread.fpu.fcsr, mem, reg_size);
+ break;
+ case DBG_FCC_BASE ... DBG_FCC_END: /* Process the fcc */
+ memcpy((void *)¤t->thread.fpu.fcc + reg_offset, mem, reg_size);
+ break;
+ case DBG_FPR_BASE ... DBG_FPR_END: /* Process the fpr */
+ memcpy((void *)¤t->thread.fpu.fpr[reg_offset], mem, reg_size);
+ break;
+ default:
+ break;
+ }
+
+ restore_fp(current);
+
+ return 0;
+}
+
+/*
+ * Similar to regs_to_gdb_regs() except that process is sleeping and so
+ * we may not be able to get all the info.
+ */
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ /* Initialize to zero */
+ memset((char *)gdb_regs, 0, NUMREGBYTES);
+
+ gdb_regs[DBG_LOONGARCH_RA] = p->thread.reg01;
+ gdb_regs[DBG_LOONGARCH_TP] = (long)p;
+ gdb_regs[DBG_LOONGARCH_SP] = p->thread.reg03;
+
+ /* S0 - S8 */
+ gdb_regs[DBG_LOONGARCH_S0] = p->thread.reg23;
+ gdb_regs[DBG_LOONGARCH_S1] = p->thread.reg24;
+ gdb_regs[DBG_LOONGARCH_S2] = p->thread.reg25;
+ gdb_regs[DBG_LOONGARCH_S3] = p->thread.reg26;
+ gdb_regs[DBG_LOONGARCH_S4] = p->thread.reg27;
+ gdb_regs[DBG_LOONGARCH_S5] = p->thread.reg28;
+ gdb_regs[DBG_LOONGARCH_S6] = p->thread.reg29;
+ gdb_regs[DBG_LOONGARCH_S7] = p->thread.reg30;
+ gdb_regs[DBG_LOONGARCH_S8] = p->thread.reg31;
+
+ /*
+ * PC use return address (RA), i.e. the moment after return from __switch_to()
+ */
+ gdb_regs[DBG_LOONGARCH_PC] = p->thread.reg01;
+}
+
+void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
+{
+ regs->csr_era = pc;
+}
+
+void arch_kgdb_breakpoint(void)
+{
+ __asm__ __volatile__ ( \
+ ".globl kgdb_breakinst\n\t" \
+ "nop\n" \
+ "kgdb_breakinst:\tbreak 2\n\t"); /* BRK_KDB = 2 */
+}
+
+/*
+ * Calls linux_debug_hook before the kernel dies. If KGDB is enabled,
+ * then try to fall into the debugger
+ */
+static int kgdb_loongarch_notify(struct notifier_block *self, unsigned long cmd, void *ptr)
+{
+ struct die_args *args = (struct die_args *)ptr;
+ struct pt_regs *regs = args->regs;
+
+ /* Userspace events, ignore. */
+ if (user_mode(regs))
+ return NOTIFY_DONE;
+
+ if (!kgdb_io_module_registered)
+ return NOTIFY_DONE;
+
+ if (atomic_read(&kgdb_active) != -1)
+ kgdb_nmicallback(smp_processor_id(), regs);
+
+ if (kgdb_handle_exception(args->trapnr, args->signr, cmd, regs))
+ return NOTIFY_DONE;
+
+ if (atomic_read(&kgdb_setting_breakpoint))
+ if (regs->csr_era == (unsigned long)&kgdb_breakinst)
+ regs->csr_era += LOONGARCH_INSN_SIZE;
+
+ return NOTIFY_STOP;
+}
+
+bool kgdb_breakpoint_handler(struct pt_regs *regs)
+{
+ struct die_args args = {
+ .regs = regs,
+ .str = "Break",
+ .err = BRK_KDB,
+ .trapnr = read_csr_excode(),
+ .signr = SIGTRAP,
+
+ };
+
+ return (kgdb_loongarch_notify(NULL, DIE_TRAP, &args) == NOTIFY_STOP) ? true : false;
+}
+
+static struct notifier_block kgdb_notifier = {
+ .notifier_call = kgdb_loongarch_notify,
+};
+
+static inline void kgdb_arch_update_addr(struct pt_regs *regs,
+ char *remcom_in_buffer)
+{
+ unsigned long addr;
+ char *ptr;
+
+ ptr = &remcom_in_buffer[1];
+ if (kgdb_hex2long(&ptr, &addr))
+ regs->csr_era = addr;
+}
+
+/* Calculate the new address for after a step */
+static int get_step_address(struct pt_regs *regs, unsigned long *next_addr)
+{
+ char cj_val;
+ unsigned int si, si_l, si_h, rd, rj, cj;
+ unsigned long pc = instruction_pointer(regs);
+ union loongarch_instruction *ip = (union loongarch_instruction *)pc;
+
+ if (pc & 3) {
+ pr_warn("%s: invalid pc 0x%lx\n", __func__, pc);
+ return -EINVAL;
+ }
+
+ *next_addr = pc + LOONGARCH_INSN_SIZE;
+
+ si_h = ip->reg0i26_format.immediate_h;
+ si_l = ip->reg0i26_format.immediate_l;
+ switch (ip->reg0i26_format.opcode) {
+ case b_op:
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 27);
+ return 0;
+ case bl_op:
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 27);
+ regs->regs[1] = pc + LOONGARCH_INSN_SIZE;
+ return 0;
+ }
+
+ rj = ip->reg1i21_format.rj;
+ cj = (rj & 0x07) + DBG_FCC_BASE;
+ si_l = ip->reg1i21_format.immediate_l;
+ si_h = ip->reg1i21_format.immediate_h;
+ dbg_get_reg(cj, &cj_val, regs);
+ switch (ip->reg1i21_format.opcode) {
+ case beqz_op:
+ if (regs->regs[rj] == 0)
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 22);
+ return 0;
+ case bnez_op:
+ if (regs->regs[rj] != 0)
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 22);
+ return 0;
+ case bceqz_op: /* bceqz_op = bcnez_op */
+ if (((rj & 0x18) == 0x00) && !cj_val) /* bceqz */
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 22);
+ if (((rj & 0x18) == 0x08) && cj_val) /* bcnez */
+ *next_addr = pc + sign_extend64((si_h << 16 | si_l) << 2, 22);
+ return 0;
+ }
+
+ rj = ip->reg2i16_format.rj;
+ rd = ip->reg2i16_format.rd;
+ si = ip->reg2i16_format.immediate;
+ switch (ip->reg2i16_format.opcode) {
+ case beq_op:
+ if (regs->regs[rj] == regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case bne_op:
+ if (regs->regs[rj] != regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case blt_op:
+ if ((long)regs->regs[rj] < (long)regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case bge_op:
+ if ((long)regs->regs[rj] >= (long)regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case bltu_op:
+ if (regs->regs[rj] < regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case bgeu_op:
+ if (regs->regs[rj] >= regs->regs[rd])
+ *next_addr = pc + sign_extend64(si << 2, 17);
+ return 0;
+ case jirl_op:
+ regs->regs[rd] = pc + LOONGARCH_INSN_SIZE;
+ *next_addr = regs->regs[rj] + sign_extend64(si << 2, 17);
+ return 0;
+ }
+
+ return 0;
+}
+
+static int do_single_step(struct pt_regs *regs)
+{
+ int error = 0;
+ unsigned long addr = 0; /* Determine where the target instruction will send us to */
+
+ error = get_step_address(regs, &addr);
+ if (error)
+ return error;
+
+ /* Store the opcode in the stepped address */
+ error = get_kernel_nofault(stepped_opcode, (void *)addr);
+ if (error)
+ return error;
+
+ stepped_address = addr;
+
+ /* Replace the opcode with the break instruction */
+ error = copy_to_kernel_nofault((void *)stepped_address,
+ arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE);
+ flush_icache_range(addr, addr + BREAK_INSTR_SIZE);
+
+ if (error) {
+ stepped_opcode = 0;
+ stepped_address = 0;
+ } else {
+ kgdb_single_step = 1;
+ atomic_set(&kgdb_cpu_doing_single_step, raw_smp_processor_id());
+ }
+
+ return error;
+}
+
+/* Undo a single step */
+static void undo_single_step(struct pt_regs *regs)
+{
+ if (stepped_opcode) {
+ copy_to_kernel_nofault((void *)stepped_address,
+ (void *)&stepped_opcode, BREAK_INSTR_SIZE);
+ flush_icache_range(stepped_address, stepped_address + BREAK_INSTR_SIZE);
+ }
+
+ stepped_opcode = 0;
+ stepped_address = 0;
+ kgdb_single_step = 0;
+ atomic_set(&kgdb_cpu_doing_single_step, -1);
+}
+
+int kgdb_arch_handle_exception(int vector, int signo, int err_code,
+ char *remcom_in_buffer, char *remcom_out_buffer,
+ struct pt_regs *regs)
+{
+ int ret = 0;
+
+ undo_single_step(regs);
+ regs->csr_prmd |= CSR_PRMD_PWE;
+
+ switch (remcom_in_buffer[0]) {
+ case 'D':
+ case 'k':
+ regs->csr_prmd &= ~CSR_PRMD_PWE;
+ fallthrough;
+ case 'c':
+ kgdb_arch_update_addr(regs, remcom_in_buffer);
+ break;
+ case 's':
+ kgdb_arch_update_addr(regs, remcom_in_buffer);
+ ret = do_single_step(regs);
+ break;
+ default:
+ ret = -1;
+ }
+
+ return ret;
+}
+
+static struct hw_breakpoint {
+ unsigned int enabled;
+ unsigned long addr;
+ int len;
+ int type;
+ struct perf_event * __percpu *pev;
+} breakinfo[LOONGARCH_MAX_BRP];
+
+static int hw_break_reserve_slot(int breakno)
+{
+ int cpu, cnt = 0;
+ struct perf_event **pevent;
+
+ for_each_online_cpu(cpu) {
+ cnt++;
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ if (dbg_reserve_bp_slot(*pevent))
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ for_each_online_cpu(cpu) {
+ cnt--;
+ if (!cnt)
+ break;
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ dbg_release_bp_slot(*pevent);
+ }
+
+ return -1;
+}
+
+static int hw_break_release_slot(int breakno)
+{
+ int cpu;
+ struct perf_event **pevent;
+
+ if (dbg_is_early)
+ return 0;
+
+ for_each_online_cpu(cpu) {
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ if (dbg_release_bp_slot(*pevent))
+ /*
+ * The debugger is responsible for handing the retry on
+ * remove failure.
+ */
+ return -1;
+ }
+
+ return 0;
+}
+
+static int kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
+{
+ int i;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++)
+ if (!breakinfo[i].enabled)
+ break;
+
+ if (i == LOONGARCH_MAX_BRP)
+ return -1;
+
+ switch (bptype) {
+ case BP_HARDWARE_BREAKPOINT:
+ breakinfo[i].type = HW_BREAKPOINT_X;
+ break;
+ case BP_READ_WATCHPOINT:
+ breakinfo[i].type = HW_BREAKPOINT_R;
+ break;
+ case BP_WRITE_WATCHPOINT:
+ breakinfo[i].type = HW_BREAKPOINT_W;
+ break;
+ case BP_ACCESS_WATCHPOINT:
+ breakinfo[i].type = HW_BREAKPOINT_RW;
+ break;
+ default:
+ return -1;
+ }
+
+ switch (len) {
+ case 1:
+ breakinfo[i].len = HW_BREAKPOINT_LEN_1;
+ break;
+ case 2:
+ breakinfo[i].len = HW_BREAKPOINT_LEN_2;
+ break;
+ case 4:
+ breakinfo[i].len = HW_BREAKPOINT_LEN_4;
+ break;
+ case 8:
+ breakinfo[i].len = HW_BREAKPOINT_LEN_8;
+ break;
+ default:
+ return -1;
+ }
+
+ breakinfo[i].addr = addr;
+ if (hw_break_reserve_slot(i)) {
+ breakinfo[i].addr = 0;
+ return -1;
+ }
+ breakinfo[i].enabled = 1;
+
+ return 0;
+}
+
+static int kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
+{
+ int i;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++)
+ if (breakinfo[i].addr == addr && breakinfo[i].enabled)
+ break;
+
+ if (i == LOONGARCH_MAX_BRP)
+ return -1;
+
+ if (hw_break_release_slot(i)) {
+ pr_err("Cannot remove hw breakpoint at %lx\n", addr);
+ return -1;
+ }
+ breakinfo[i].enabled = 0;
+
+ return 0;
+}
+
+static void kgdb_disable_hw_break(struct pt_regs *regs)
+{
+ int i;
+ int cpu = raw_smp_processor_id();
+ struct perf_event *bp;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++) {
+ if (!breakinfo[i].enabled)
+ continue;
+
+ bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (bp->attr.disabled == 1)
+ continue;
+
+ arch_uninstall_hw_breakpoint(bp);
+ bp->attr.disabled = 1;
+ }
+
+ /* Disable hardware debugging while we are in kgdb */
+ csr_xchg32(0, CSR_CRMD_WE, LOONGARCH_CSR_CRMD);
+}
+
+static void kgdb_remove_all_hw_break(void)
+{
+ int i;
+ int cpu = raw_smp_processor_id();
+ struct perf_event *bp;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++) {
+ if (!breakinfo[i].enabled)
+ continue;
+
+ bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (!bp->attr.disabled) {
+ arch_uninstall_hw_breakpoint(bp);
+ bp->attr.disabled = 1;
+ continue;
+ }
+
+ if (hw_break_release_slot(i))
+ pr_err("KGDB: hw bpt remove failed %lx\n", breakinfo[i].addr);
+ breakinfo[i].enabled = 0;
+ }
+
+ csr_xchg32(0, CSR_CRMD_WE, LOONGARCH_CSR_CRMD);
+ kgdb_watch_activated = 0;
+}
+
+static void kgdb_correct_hw_break(void)
+{
+ int i, activated = 0;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++) {
+ struct perf_event *bp;
+ int val;
+ int cpu = raw_smp_processor_id();
+
+ if (!breakinfo[i].enabled)
+ continue;
+
+ bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (bp->attr.disabled != 1)
+ continue;
+
+ bp->attr.bp_addr = breakinfo[i].addr;
+ bp->attr.bp_len = breakinfo[i].len;
+ bp->attr.bp_type = breakinfo[i].type;
+
+ val = hw_breakpoint_arch_parse(bp, &bp->attr, counter_arch_bp(bp));
+ if (val)
+ return;
+
+ val = arch_install_hw_breakpoint(bp);
+ if (!val)
+ bp->attr.disabled = 0;
+ activated = 1;
+ }
+
+ csr_xchg32(activated ? CSR_CRMD_WE : 0, CSR_CRMD_WE, LOONGARCH_CSR_CRMD);
+ kgdb_watch_activated = activated;
+}
+
+const struct kgdb_arch arch_kgdb_ops = {
+ .gdb_bpt_instr = {0x02, 0x00, break_op >> 1, 0x00}, /* BRK_KDB = 2 */
+ .flags = KGDB_HW_BREAKPOINT,
+ .set_hw_breakpoint = kgdb_set_hw_break,
+ .remove_hw_breakpoint = kgdb_remove_hw_break,
+ .disable_hw_break = kgdb_disable_hw_break,
+ .remove_all_hw_break = kgdb_remove_all_hw_break,
+ .correct_hw_break = kgdb_correct_hw_break,
+};
+
+int kgdb_arch_init(void)
+{
+ return register_die_notifier(&kgdb_notifier);
+}
+
+void kgdb_arch_late(void)
+{
+ int i, cpu;
+ struct perf_event_attr attr;
+ struct perf_event **pevent;
+
+ hw_breakpoint_init(&attr);
+
+ attr.bp_addr = (unsigned long)kgdb_arch_init;
+ attr.bp_len = HW_BREAKPOINT_LEN_4;
+ attr.bp_type = HW_BREAKPOINT_W;
+ attr.disabled = 1;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++) {
+ if (breakinfo[i].pev)
+ continue;
+
+ breakinfo[i].pev = register_wide_hw_breakpoint(&attr, NULL, NULL);
+ if (IS_ERR((void * __force)breakinfo[i].pev)) {
+ pr_err("kgdb: Could not allocate hw breakpoints.\n");
+ breakinfo[i].pev = NULL;
+ return;
+ }
+
+ for_each_online_cpu(cpu) {
+ pevent = per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (pevent[0]->destroy) {
+ pevent[0]->destroy = NULL;
+ release_bp_slot(*pevent);
+ }
+ }
+ }
+}
+
+void kgdb_arch_exit(void)
+{
+ int i;
+
+ for (i = 0; i < LOONGARCH_MAX_BRP; i++) {
+ if (breakinfo[i].pev) {
+ unregister_wide_hw_breakpoint(breakinfo[i].pev);
+ breakinfo[i].pev = NULL;
+ }
+ }
+
+ unregister_die_notifier(&kgdb_notifier);
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Author: Qi Hu <huqi@loongson.cn>
+ * Huacai Chen <chenhuacai@loongson.cn>
+ *
+ * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
+ */
+#include <asm/asm.h>
+#include <asm/asmmacro.h>
+#include <asm/asm-extable.h>
+#include <asm/asm-offsets.h>
+#include <asm/errno.h>
+#include <asm/regdef.h>
+
+#define SCR_REG_WIDTH 8
+
+ .macro EX insn, reg, src, offs
+.ex\@: \insn \reg, \src, \offs
+ _asm_extable .ex\@, .L_lbt_fault
+ .endm
+
+/*
+ * Save a thread's lbt context.
+ */
+SYM_FUNC_START(_save_lbt)
+ movscr2gr t1, $scr0 # save scr
+ stptr.d t1, a0, THREAD_SCR0
+ movscr2gr t1, $scr1
+ stptr.d t1, a0, THREAD_SCR1
+ movscr2gr t1, $scr2
+ stptr.d t1, a0, THREAD_SCR2
+ movscr2gr t1, $scr3
+ stptr.d t1, a0, THREAD_SCR3
+
+ x86mfflag t1, 0x3f # save eflags
+ stptr.d t1, a0, THREAD_EFLAGS
+ jr ra
+SYM_FUNC_END(_save_lbt)
+EXPORT_SYMBOL(_save_lbt)
+
+/*
+ * Restore a thread's lbt context.
+ */
+SYM_FUNC_START(_restore_lbt)
+ ldptr.d t1, a0, THREAD_SCR0 # restore scr
+ movgr2scr $scr0, t1
+ ldptr.d t1, a0, THREAD_SCR1
+ movgr2scr $scr1, t1
+ ldptr.d t1, a0, THREAD_SCR2
+ movgr2scr $scr2, t1
+ ldptr.d t1, a0, THREAD_SCR3
+ movgr2scr $scr3, t1
+
+ ldptr.d t1, a0, THREAD_EFLAGS # restore eflags
+ x86mtflag t1, 0x3f
+ jr ra
+SYM_FUNC_END(_restore_lbt)
+EXPORT_SYMBOL(_restore_lbt)
+
+/*
+ * Load scr/eflag with zero.
+ */
+SYM_FUNC_START(_init_lbt)
+ movgr2scr $scr0, zero
+ movgr2scr $scr1, zero
+ movgr2scr $scr2, zero
+ movgr2scr $scr3, zero
+
+ x86mtflag zero, 0x3f
+ jr ra
+SYM_FUNC_END(_init_lbt)
+
+/*
+ * a0: scr
+ * a1: eflag
+ */
+SYM_FUNC_START(_save_lbt_context)
+ movscr2gr t1, $scr0 # save scr
+ EX st.d t1, a0, (0 * SCR_REG_WIDTH)
+ movscr2gr t1, $scr1
+ EX st.d t1, a0, (1 * SCR_REG_WIDTH)
+ movscr2gr t1, $scr2
+ EX st.d t1, a0, (2 * SCR_REG_WIDTH)
+ movscr2gr t1, $scr3
+ EX st.d t1, a0, (3 * SCR_REG_WIDTH)
+
+ x86mfflag t1, 0x3f # save eflags
+ EX st.w t1, a1, 0
+ li.w a0, 0 # success
+ jr ra
+SYM_FUNC_END(_save_lbt_context)
+
+/*
+ * a0: scr
+ * a1: eflag
+ */
+SYM_FUNC_START(_restore_lbt_context)
+ EX ld.d t1, a0, (0 * SCR_REG_WIDTH) # restore scr
+ movgr2scr $scr0, t1
+ EX ld.d t1, a0, (1 * SCR_REG_WIDTH)
+ movgr2scr $scr1, t1
+ EX ld.d t1, a0, (2 * SCR_REG_WIDTH)
+ movgr2scr $scr2, t1
+ EX ld.d t1, a0, (3 * SCR_REG_WIDTH)
+ movgr2scr $scr3, t1
+
+ EX ld.w t1, a1, 0 # restore eflags
+ x86mtflag t1, 0x3f
+ li.w a0, 0 # success
+ jr ra
+SYM_FUNC_END(_restore_lbt_context)
+
+/*
+ * a0: ftop
+ */
+SYM_FUNC_START(_save_ftop_context)
+ x86mftop t1
+ st.w t1, a0, 0
+ li.w a0, 0 # success
+ jr ra
+SYM_FUNC_END(_save_ftop_context)
+
+/*
+ * a0: ftop
+ */
+SYM_FUNC_START(_restore_ftop_context)
+ ld.w t1, a0, 0
+ andi t1, t1, 0x7
+ la.pcrel a0, 1f
+ alsl.d a0, t1, a0, 3
+ jr a0
+1:
+ x86mttop 0
+ b 2f
+ x86mttop 1
+ b 2f
+ x86mttop 2
+ b 2f
+ x86mttop 3
+ b 2f
+ x86mttop 4
+ b 2f
+ x86mttop 5
+ b 2f
+ x86mttop 6
+ b 2f
+ x86mttop 7
+2:
+ li.w a0, 0 # success
+ jr ra
+SYM_FUNC_END(_restore_ftop_context)
+
+.L_lbt_fault:
+ li.w a0, -EFAULT # failure
+ jr ra
void __init pcpu_populate_pte(unsigned long addr)
{
- pgd_t *pgd = pgd_offset_k(addr);
- p4d_t *p4d = p4d_offset(pgd, addr);
- pud_t *pud;
- pmd_t *pmd;
-
- if (p4d_none(*p4d)) {
- pud_t *new;
-
- new = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- pgd_populate(&init_mm, pgd, new);
-#ifndef __PAGETABLE_PUD_FOLDED
- pud_init(new);
-#endif
- }
-
- pud = pud_offset(p4d, addr);
- if (pud_none(*pud)) {
- pmd_t *new;
-
- new = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- pud_populate(&init_mm, pud, new);
-#ifndef __PAGETABLE_PMD_FOLDED
- pmd_init(new);
-#endif
- }
-
- pmd = pmd_offset(pud, addr);
- if (!pmd_present(*pmd)) {
- pte_t *new;
-
- new = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- pmd_populate_kernel(&init_mm, pmd, new);
- }
+ populate_kernel_pte(addr);
}
void __init setup_per_cpu_areas(void)
{
high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT);
memblock_free_all();
- setup_zero_pages(); /* This comes from node 0 */
}
int pcibus_to_node(struct pci_bus *bus)
#include <asm/cpu.h>
#include <asm/elf.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/irq_regs.h>
euen = regs->csr_euen & ~(CSR_EUEN_FPEN);
regs->csr_euen = euen;
lose_fpu(0);
+ lose_lbt(0);
clear_thread_flag(TIF_LSX_CTX_LIVE);
clear_thread_flag(TIF_LASX_CTX_LIVE);
+ clear_thread_flag(TIF_LBT_CTX_LIVE);
clear_used_math();
regs->csr_era = pc;
regs->regs[3] = sp;
preempt_enable();
- if (used_math())
- memcpy(dst, src, sizeof(struct task_struct));
- else
+ if (!used_math())
memcpy(dst, src, offsetof(struct task_struct, thread.fpu.fpr));
+ else
+ memcpy(dst, src, offsetof(struct task_struct, thread.lbt.scr0));
+
+#ifdef CONFIG_CPU_HAS_LBT
+ memcpy(&dst->thread.lbt, &src->thread.lbt, sizeof(struct loongarch_lbt));
+#endif
return 0;
}
ptrace_hw_copy_thread(p);
clear_tsk_thread_flag(p, TIF_USEDFPU);
clear_tsk_thread_flag(p, TIF_USEDSIMD);
+ clear_tsk_thread_flag(p, TIF_USEDLBT);
clear_tsk_thread_flag(p, TIF_LSX_CTX_LIVE);
clear_tsk_thread_flag(p, TIF_LASX_CTX_LIVE);
+ clear_tsk_thread_flag(p, TIF_LBT_CTX_LIVE);
return 0;
}
#include <asm/cpu.h>
#include <asm/cpu-info.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
#include <asm/loongarch.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#endif /* CONFIG_CPU_HAS_LSX */
+#ifdef CONFIG_CPU_HAS_LBT
+static int lbt_get(struct task_struct *target,
+ const struct user_regset *regset,
+ struct membuf to)
+{
+ int r;
+
+ r = membuf_write(&to, &target->thread.lbt.scr0, sizeof(target->thread.lbt.scr0));
+ r = membuf_write(&to, &target->thread.lbt.scr1, sizeof(target->thread.lbt.scr1));
+ r = membuf_write(&to, &target->thread.lbt.scr2, sizeof(target->thread.lbt.scr2));
+ r = membuf_write(&to, &target->thread.lbt.scr3, sizeof(target->thread.lbt.scr3));
+ r = membuf_write(&to, &target->thread.lbt.eflags, sizeof(u32));
+ r = membuf_write(&to, &target->thread.fpu.ftop, sizeof(u32));
+
+ return r;
+}
+
+static int lbt_set(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ const void *kbuf, const void __user *ubuf)
+{
+ int err = 0;
+ const int eflags_start = 4 * sizeof(target->thread.lbt.scr0);
+ const int ftop_start = eflags_start + sizeof(u32);
+
+ err |= user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &target->thread.lbt.scr0,
+ 0, 4 * sizeof(target->thread.lbt.scr0));
+ err |= user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &target->thread.lbt.eflags,
+ eflags_start, ftop_start);
+ err |= user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &target->thread.fpu.ftop,
+ ftop_start, ftop_start + sizeof(u32));
+
+ return err;
+}
+#endif /* CONFIG_CPU_HAS_LBT */
+
#ifdef CONFIG_HAVE_HW_BREAKPOINT
/*
#ifdef CONFIG_CPU_HAS_LASX
REGSET_LASX,
#endif
+#ifdef CONFIG_CPU_HAS_LBT
+ REGSET_LBT,
+#endif
#ifdef CONFIG_HAVE_HW_BREAKPOINT
REGSET_HW_BREAK,
REGSET_HW_WATCH,
.set = simd_set,
},
#endif
+#ifdef CONFIG_CPU_HAS_LBT
+ [REGSET_LBT] = {
+ .core_note_type = NT_LOONGARCH_LBT,
+ .n = 5,
+ .size = sizeof(u64),
+ .align = sizeof(u64),
+ .regset_get = lbt_get,
+ .set = lbt_set,
+ },
+#endif
#ifdef CONFIG_HAVE_HW_BREAKPOINT
[REGSET_HW_BREAK] = {
.core_note_type = NT_LOONGARCH_HW_BREAK,
*new_addr = (unsigned long)reloc_offset;
}
-void * __init relocate_kernel(void)
+unsigned long __init relocate_kernel(void)
{
unsigned long kernel_length;
unsigned long random_offset = 0;
void *location_new = _text; /* Default to original kernel start */
- void *kernel_entry = start_kernel; /* Default to original kernel entry point */
char *cmdline = early_ioremap(fw_arg1, COMMAND_LINE_SIZE); /* Boot command line is passed in fw_arg1 */
strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
reloc_offset += random_offset;
- /* Return the new kernel's entry point */
- kernel_entry = RELOCATED_KASLR(start_kernel);
-
/* The current thread is now within the relocated kernel */
__current_thread_info = RELOCATED_KASLR(__current_thread_info);
relocate_absolute(random_offset);
- return kernel_entry;
+ return random_offset;
}
/*
#endif
paging_init();
+
+#ifdef CONFIG_KASAN
+ kasan_init();
+#endif
}
#include <asm/cacheflush.h>
#include <asm/cpu-features.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
#include <asm/ucontext.h>
#include <asm/vdso.h>
/* Make sure we will not lose FPU ownership */
#define lock_fpu_owner() ({ preempt_disable(); pagefault_disable(); })
#define unlock_fpu_owner() ({ pagefault_enable(); preempt_enable(); })
+/* Make sure we will not lose LBT ownership */
+#define lock_lbt_owner() ({ preempt_disable(); pagefault_disable(); })
+#define unlock_lbt_owner() ({ pagefault_enable(); preempt_enable(); })
/* Assembly functions to move context to/from the FPU */
extern asmlinkage int
extern asmlinkage int
_restore_lasx_context(void __user *fpregs, void __user *fcc, void __user *fcsr);
+#ifdef CONFIG_CPU_HAS_LBT
+extern asmlinkage int _save_lbt_context(void __user *regs, void __user *eflags);
+extern asmlinkage int _restore_lbt_context(void __user *regs, void __user *eflags);
+extern asmlinkage int _save_ftop_context(void __user *ftop);
+extern asmlinkage int _restore_ftop_context(void __user *ftop);
+#endif
+
struct rt_sigframe {
struct siginfo rs_info;
struct ucontext rs_uctx;
struct _ctx_layout fpu;
struct _ctx_layout lsx;
struct _ctx_layout lasx;
+ struct _ctx_layout lbt;
struct _ctx_layout end;
};
return err;
}
+#ifdef CONFIG_CPU_HAS_LBT
+static int copy_lbt_to_sigcontext(struct lbt_context __user *ctx)
+{
+ int err = 0;
+ uint64_t __user *regs = (uint64_t *)&ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&ctx->eflags;
+
+ err |= __put_user(current->thread.lbt.scr0, ®s[0]);
+ err |= __put_user(current->thread.lbt.scr1, ®s[1]);
+ err |= __put_user(current->thread.lbt.scr2, ®s[2]);
+ err |= __put_user(current->thread.lbt.scr3, ®s[3]);
+ err |= __put_user(current->thread.lbt.eflags, eflags);
+
+ return err;
+}
+
+static int copy_lbt_from_sigcontext(struct lbt_context __user *ctx)
+{
+ int err = 0;
+ uint64_t __user *regs = (uint64_t *)&ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&ctx->eflags;
+
+ err |= __get_user(current->thread.lbt.scr0, ®s[0]);
+ err |= __get_user(current->thread.lbt.scr1, ®s[1]);
+ err |= __get_user(current->thread.lbt.scr2, ®s[2]);
+ err |= __get_user(current->thread.lbt.scr3, ®s[3]);
+ err |= __get_user(current->thread.lbt.eflags, eflags);
+
+ return err;
+}
+
+static int copy_ftop_to_sigcontext(struct lbt_context __user *ctx)
+{
+ uint32_t __user *ftop = &ctx->ftop;
+
+ return __put_user(current->thread.fpu.ftop, ftop);
+}
+
+static int copy_ftop_from_sigcontext(struct lbt_context __user *ctx)
+{
+ uint32_t __user *ftop = &ctx->ftop;
+
+ return __get_user(current->thread.fpu.ftop, ftop);
+}
+#endif
+
/*
* Wrappers for the assembly _{save,restore}_fp_context functions.
*/
return _restore_lasx_context(regs, fcc, fcsr);
}
+/*
+ * Wrappers for the assembly _{save,restore}_lbt_context functions.
+ */
+#ifdef CONFIG_CPU_HAS_LBT
+static int save_hw_lbt_context(struct lbt_context __user *ctx)
+{
+ uint64_t __user *regs = (uint64_t *)&ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&ctx->eflags;
+
+ return _save_lbt_context(regs, eflags);
+}
+
+static int restore_hw_lbt_context(struct lbt_context __user *ctx)
+{
+ uint64_t __user *regs = (uint64_t *)&ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&ctx->eflags;
+
+ return _restore_lbt_context(regs, eflags);
+}
+
+static int save_hw_ftop_context(struct lbt_context __user *ctx)
+{
+ uint32_t __user *ftop = &ctx->ftop;
+
+ return _save_ftop_context(ftop);
+}
+
+static int restore_hw_ftop_context(struct lbt_context __user *ctx)
+{
+ uint32_t __user *ftop = &ctx->ftop;
+
+ return _restore_ftop_context(ftop);
+}
+#endif
+
static int fcsr_pending(unsigned int __user *fcsr)
{
int err, sig = 0;
return err ?: sig;
}
+#ifdef CONFIG_CPU_HAS_LBT
+static int protected_save_lbt_context(struct extctx_layout *extctx)
+{
+ int err = 0;
+ struct sctx_info __user *info = extctx->lbt.addr;
+ struct lbt_context __user *lbt_ctx =
+ (struct lbt_context *)get_ctx_through_ctxinfo(info);
+ uint64_t __user *regs = (uint64_t *)&lbt_ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&lbt_ctx->eflags;
+
+ while (1) {
+ lock_lbt_owner();
+ if (is_lbt_owner())
+ err |= save_hw_lbt_context(lbt_ctx);
+ else
+ err |= copy_lbt_to_sigcontext(lbt_ctx);
+ if (is_fpu_owner())
+ err |= save_hw_ftop_context(lbt_ctx);
+ else
+ err |= copy_ftop_to_sigcontext(lbt_ctx);
+ unlock_lbt_owner();
+
+ err |= __put_user(LBT_CTX_MAGIC, &info->magic);
+ err |= __put_user(extctx->lbt.size, &info->size);
+
+ if (likely(!err))
+ break;
+ /* Touch the LBT context and try again */
+ err = __put_user(0, ®s[0]) | __put_user(0, eflags);
+
+ if (err)
+ return err;
+ }
+
+ return err;
+}
+
+static int protected_restore_lbt_context(struct extctx_layout *extctx)
+{
+ int err = 0, tmp __maybe_unused;
+ struct sctx_info __user *info = extctx->lbt.addr;
+ struct lbt_context __user *lbt_ctx =
+ (struct lbt_context *)get_ctx_through_ctxinfo(info);
+ uint64_t __user *regs = (uint64_t *)&lbt_ctx->regs;
+ uint32_t __user *eflags = (uint32_t *)&lbt_ctx->eflags;
+
+ while (1) {
+ lock_lbt_owner();
+ if (is_lbt_owner())
+ err |= restore_hw_lbt_context(lbt_ctx);
+ else
+ err |= copy_lbt_from_sigcontext(lbt_ctx);
+ if (is_fpu_owner())
+ err |= restore_hw_ftop_context(lbt_ctx);
+ else
+ err |= copy_ftop_from_sigcontext(lbt_ctx);
+ unlock_lbt_owner();
+
+ if (likely(!err))
+ break;
+ /* Touch the LBT context and try again */
+ err = __get_user(tmp, ®s[0]) | __get_user(tmp, eflags);
+
+ if (err)
+ return err;
+ }
+
+ return err;
+}
+#endif
+
static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
struct extctx_layout *extctx)
{
else if (extctx->fpu.addr)
err |= protected_save_fpu_context(extctx);
+#ifdef CONFIG_CPU_HAS_LBT
+ if (extctx->lbt.addr)
+ err |= protected_save_lbt_context(extctx);
+#endif
+
/* Set the "end" magic */
info = (struct sctx_info *)extctx->end.addr;
err |= __put_user(0, &info->magic);
extctx->lasx.addr = info;
break;
+ case LBT_CTX_MAGIC:
+ if (size < (sizeof(struct sctx_info) +
+ sizeof(struct lbt_context)))
+ goto invalid;
+ extctx->lbt.addr = info;
+ break;
+
default:
goto invalid;
}
else if (extctx.fpu.addr)
err |= protected_restore_fpu_context(&extctx);
+#ifdef CONFIG_CPU_HAS_LBT
+ if (extctx.lbt.addr)
+ err |= protected_restore_lbt_context(&extctx);
+#endif
+
bad:
return err;
}
sizeof(struct fpu_context), FPU_CTX_ALIGN, new_sp);
}
+#ifdef CONFIG_CPU_HAS_LBT
+ if (cpu_has_lbt && thread_lbt_context_live()) {
+ new_sp = extframe_alloc(extctx, &extctx->lbt,
+ sizeof(struct lbt_context), LBT_CTX_ALIGN, new_sp);
+ }
+#endif
+
return new_sp;
}
struct pt_regs dummyregs;
struct unwind_state state;
- regs = &dummyregs;
+ if (!regs) {
+ regs = &dummyregs;
- if (task == current) {
- regs->regs[3] = (unsigned long)__builtin_frame_address(0);
- regs->csr_era = (unsigned long)__builtin_return_address(0);
- } else {
- regs->regs[3] = thread_saved_fp(task);
- regs->csr_era = thread_saved_ra(task);
+ if (task == current) {
+ regs->regs[3] = (unsigned long)__builtin_frame_address(0);
+ regs->csr_era = (unsigned long)__builtin_return_address(0);
+ } else {
+ regs->regs[3] = thread_saved_fp(task);
+ regs->csr_era = thread_saved_ra(task);
+ }
+ regs->regs[1] = 0;
}
- regs->regs[1] = 0;
for (unwind_start(&state, task, regs);
!unwind_done(&state) && !unwind_error(&state); unwind_next_frame(&state)) {
addr = unwind_get_return_address(&state);
#include <asm/break.h>
#include <asm/cpu.h>
#include <asm/fpu.h>
+#include <asm/lbt.h>
#include <asm/inst.h>
+#include <asm/kgdb.h>
#include <asm/loongarch.h>
#include <asm/mmu_context.h>
#include <asm/pgtable.h>
* pertain to them.
*/
switch (bcode) {
+ case BRK_KDB:
+ if (kgdb_breakpoint_handler(regs))
+ goto out;
+ else
+ break;
case BRK_KPROBE_BP:
if (kprobe_breakpoint_handler(regs))
goto out;
#ifndef CONFIG_HAVE_HW_BREAKPOINT
pr_warn("Hardware watch point handler not implemented!\n");
#else
+ if (kgdb_breakpoint_handler(regs))
+ goto out;
+
if (test_tsk_thread_flag(current, TIF_SINGLESTEP)) {
int llbit = (csr_read32(LOONGARCH_CSR_LLBCTL) & 0x1);
unsigned long pc = instruction_pointer(regs);
irqentry_exit(regs, state);
}
+static void init_restore_lbt(void)
+{
+ if (!thread_lbt_context_live()) {
+ /* First time LBT context user */
+ init_lbt();
+ set_thread_flag(TIF_LBT_CTX_LIVE);
+ } else {
+ if (!is_lbt_owner())
+ own_lbt_inatomic(1);
+ }
+
+ BUG_ON(!is_lbt_enabled());
+}
+
asmlinkage void noinstr do_lbt(struct pt_regs *regs)
{
irqentry_state_t state = irqentry_enter(regs);
- local_irq_enable();
- force_sig(SIGILL);
- local_irq_disable();
+ /*
+ * BTD (Binary Translation Disable exception) can be triggered
+ * during FP save/restore if TM (Top Mode) is on, which may
+ * cause irq_enable during 'switch_to'. To avoid this situation
+ * (including the user using 'MOVGR2GCSR' to turn on TM, which
+ * will not trigger the BTE), we need to check PRMD first.
+ */
+ if (regs->csr_prmd & CSR_PRMD_PIE)
+ local_irq_enable();
+
+ if (!cpu_has_lbt) {
+ force_sig(SIGILL);
+ goto out;
+ }
+ BUG_ON(is_lbt_enabled());
+
+ preempt_disable();
+ init_restore_lbt();
+ preempt_enable();
+
+out:
+ if (regs->csr_prmd & CSR_PRMD_PIE)
+ local_irq_disable();
irqentry_exit(regs, state);
}
lib-y += delay.o memset.o memcpy.o memmove.o \
clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o
+obj-$(CONFIG_CPU_HAS_LSX) += xor_simd.o xor_simd_glue.o
+
obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
#include <asm/cpu.h>
#include <asm/regdef.h>
-.irp to, 0, 1, 2, 3, 4, 5, 6, 7
-.L_fixup_handle_\to\():
- sub.d a0, a2, a0
- addi.d a0, a0, (\to) * (-8)
- jr ra
-.endr
-
-.irp to, 0, 2, 4
-.L_fixup_handle_s\to\():
- addi.d a0, a1, -\to
- jr ra
-.endr
-
SYM_FUNC_START(__clear_user)
/*
* Some CPUs support hardware unaligned access
2: move a0, a1
jr ra
- _asm_extable 1b, .L_fixup_handle_s0
+ _asm_extable 1b, 2b
SYM_FUNC_END(__clear_user_generic)
/*
jr ra
/* fixup and ex_table */
- _asm_extable 0b, .L_fixup_handle_0
- _asm_extable 1b, .L_fixup_handle_0
- _asm_extable 2b, .L_fixup_handle_1
- _asm_extable 3b, .L_fixup_handle_2
- _asm_extable 4b, .L_fixup_handle_3
- _asm_extable 5b, .L_fixup_handle_4
- _asm_extable 6b, .L_fixup_handle_5
- _asm_extable 7b, .L_fixup_handle_6
- _asm_extable 8b, .L_fixup_handle_7
- _asm_extable 9b, .L_fixup_handle_0
- _asm_extable 10b, .L_fixup_handle_1
- _asm_extable 11b, .L_fixup_handle_2
- _asm_extable 12b, .L_fixup_handle_3
- _asm_extable 13b, .L_fixup_handle_0
- _asm_extable 14b, .L_fixup_handle_1
- _asm_extable 15b, .L_fixup_handle_0
- _asm_extable 16b, .L_fixup_handle_0
- _asm_extable 17b, .L_fixup_handle_s0
- _asm_extable 18b, .L_fixup_handle_s0
- _asm_extable 19b, .L_fixup_handle_s0
- _asm_extable 20b, .L_fixup_handle_s2
- _asm_extable 21b, .L_fixup_handle_s0
- _asm_extable 22b, .L_fixup_handle_s0
- _asm_extable 23b, .L_fixup_handle_s4
- _asm_extable 24b, .L_fixup_handle_s0
- _asm_extable 25b, .L_fixup_handle_s4
- _asm_extable 26b, .L_fixup_handle_s0
- _asm_extable 27b, .L_fixup_handle_s4
- _asm_extable 28b, .L_fixup_handle_s0
+.Llarge_fixup:
+ sub.d a1, a2, a0
+
+.Lsmall_fixup:
+29: st.b zero, a0, 0
+ addi.d a0, a0, 1
+ addi.d a1, a1, -1
+ bgt a1, zero, 29b
+
+.Lexit:
+ move a0, a1
+ jr ra
+
+ _asm_extable 0b, .Lsmall_fixup
+ _asm_extable 1b, .Llarge_fixup
+ _asm_extable 2b, .Llarge_fixup
+ _asm_extable 3b, .Llarge_fixup
+ _asm_extable 4b, .Llarge_fixup
+ _asm_extable 5b, .Llarge_fixup
+ _asm_extable 6b, .Llarge_fixup
+ _asm_extable 7b, .Llarge_fixup
+ _asm_extable 8b, .Llarge_fixup
+ _asm_extable 9b, .Llarge_fixup
+ _asm_extable 10b, .Llarge_fixup
+ _asm_extable 11b, .Llarge_fixup
+ _asm_extable 12b, .Llarge_fixup
+ _asm_extable 13b, .Llarge_fixup
+ _asm_extable 14b, .Llarge_fixup
+ _asm_extable 15b, .Llarge_fixup
+ _asm_extable 16b, .Llarge_fixup
+ _asm_extable 17b, .Lexit
+ _asm_extable 18b, .Lsmall_fixup
+ _asm_extable 19b, .Lsmall_fixup
+ _asm_extable 20b, .Lsmall_fixup
+ _asm_extable 21b, .Lsmall_fixup
+ _asm_extable 22b, .Lsmall_fixup
+ _asm_extable 23b, .Lsmall_fixup
+ _asm_extable 24b, .Lsmall_fixup
+ _asm_extable 25b, .Lsmall_fixup
+ _asm_extable 26b, .Lsmall_fixup
+ _asm_extable 27b, .Lsmall_fixup
+ _asm_extable 28b, .Lsmall_fixup
+ _asm_extable 29b, .Lexit
SYM_FUNC_END(__clear_user_fast)
#include <asm/cpu.h>
#include <asm/regdef.h>
-.irp to, 0, 1, 2, 3, 4, 5, 6, 7
-.L_fixup_handle_\to\():
- sub.d a0, a2, a0
- addi.d a0, a0, (\to) * (-8)
- jr ra
-.endr
-
-.irp to, 0, 2, 4
-.L_fixup_handle_s\to\():
- addi.d a0, a2, -\to
- jr ra
-.endr
-
SYM_FUNC_START(__copy_user)
/*
* Some CPUs support hardware unaligned access
3: move a0, a2
jr ra
- _asm_extable 1b, .L_fixup_handle_s0
- _asm_extable 2b, .L_fixup_handle_s0
+ _asm_extable 1b, 3b
+ _asm_extable 2b, 3b
SYM_FUNC_END(__copy_user_generic)
/*
sltui t0, a2, 9
bnez t0, .Lsmall
- add.d a3, a1, a2
- add.d a2, a0, a2
0: ld.d t0, a1, 0
1: st.d t0, a0, 0
+ add.d a3, a1, a2
+ add.d a2, a0, a2
/* align up destination address */
andi t1, a0, 7
7: ld.d t5, a1, 40
8: ld.d t6, a1, 48
9: ld.d t7, a1, 56
- addi.d a1, a1, 64
10: st.d t0, a0, 0
11: st.d t1, a0, 8
12: st.d t2, a0, 16
15: st.d t5, a0, 40
16: st.d t6, a0, 48
17: st.d t7, a0, 56
+ addi.d a1, a1, 64
addi.d a0, a0, 64
bltu a1, a4, .Lloop64
19: ld.d t1, a1, 8
20: ld.d t2, a1, 16
21: ld.d t3, a1, 24
- addi.d a1, a1, 32
22: st.d t0, a0, 0
23: st.d t1, a0, 8
24: st.d t2, a0, 16
25: st.d t3, a0, 24
+ addi.d a1, a1, 32
addi.d a0, a0, 32
.Llt32:
bgeu a1, a4, .Llt16
26: ld.d t0, a1, 0
27: ld.d t1, a1, 8
- addi.d a1, a1, 16
28: st.d t0, a0, 0
29: st.d t1, a0, 8
+ addi.d a1, a1, 16
addi.d a0, a0, 16
.Llt16:
bgeu a1, a4, .Llt8
30: ld.d t0, a1, 0
31: st.d t0, a0, 0
+ addi.d a1, a1, 8
addi.d a0, a0, 8
.Llt8:
jr ra
/* fixup and ex_table */
- _asm_extable 0b, .L_fixup_handle_0
- _asm_extable 1b, .L_fixup_handle_0
- _asm_extable 2b, .L_fixup_handle_0
- _asm_extable 3b, .L_fixup_handle_0
- _asm_extable 4b, .L_fixup_handle_0
- _asm_extable 5b, .L_fixup_handle_0
- _asm_extable 6b, .L_fixup_handle_0
- _asm_extable 7b, .L_fixup_handle_0
- _asm_extable 8b, .L_fixup_handle_0
- _asm_extable 9b, .L_fixup_handle_0
- _asm_extable 10b, .L_fixup_handle_0
- _asm_extable 11b, .L_fixup_handle_1
- _asm_extable 12b, .L_fixup_handle_2
- _asm_extable 13b, .L_fixup_handle_3
- _asm_extable 14b, .L_fixup_handle_4
- _asm_extable 15b, .L_fixup_handle_5
- _asm_extable 16b, .L_fixup_handle_6
- _asm_extable 17b, .L_fixup_handle_7
- _asm_extable 18b, .L_fixup_handle_0
- _asm_extable 19b, .L_fixup_handle_0
- _asm_extable 20b, .L_fixup_handle_0
- _asm_extable 21b, .L_fixup_handle_0
- _asm_extable 22b, .L_fixup_handle_0
- _asm_extable 23b, .L_fixup_handle_1
- _asm_extable 24b, .L_fixup_handle_2
- _asm_extable 25b, .L_fixup_handle_3
- _asm_extable 26b, .L_fixup_handle_0
- _asm_extable 27b, .L_fixup_handle_0
- _asm_extable 28b, .L_fixup_handle_0
- _asm_extable 29b, .L_fixup_handle_1
- _asm_extable 30b, .L_fixup_handle_0
- _asm_extable 31b, .L_fixup_handle_0
- _asm_extable 32b, .L_fixup_handle_0
- _asm_extable 33b, .L_fixup_handle_0
- _asm_extable 34b, .L_fixup_handle_s0
- _asm_extable 35b, .L_fixup_handle_s0
- _asm_extable 36b, .L_fixup_handle_s0
- _asm_extable 37b, .L_fixup_handle_s0
- _asm_extable 38b, .L_fixup_handle_s0
- _asm_extable 39b, .L_fixup_handle_s0
- _asm_extable 40b, .L_fixup_handle_s0
- _asm_extable 41b, .L_fixup_handle_s2
- _asm_extable 42b, .L_fixup_handle_s0
- _asm_extable 43b, .L_fixup_handle_s0
- _asm_extable 44b, .L_fixup_handle_s0
- _asm_extable 45b, .L_fixup_handle_s0
- _asm_extable 46b, .L_fixup_handle_s0
- _asm_extable 47b, .L_fixup_handle_s4
- _asm_extable 48b, .L_fixup_handle_s0
- _asm_extable 49b, .L_fixup_handle_s0
- _asm_extable 50b, .L_fixup_handle_s0
- _asm_extable 51b, .L_fixup_handle_s4
- _asm_extable 52b, .L_fixup_handle_s0
- _asm_extable 53b, .L_fixup_handle_s0
- _asm_extable 54b, .L_fixup_handle_s0
- _asm_extable 55b, .L_fixup_handle_s4
- _asm_extable 56b, .L_fixup_handle_s0
- _asm_extable 57b, .L_fixup_handle_s0
+.Llarge_fixup:
+ sub.d a2, a2, a0
+
+.Lsmall_fixup:
+58: ld.b t0, a1, 0
+59: st.b t0, a0, 0
+ addi.d a0, a0, 1
+ addi.d a1, a1, 1
+ addi.d a2, a2, -1
+ bgt a2, zero, 58b
+
+.Lexit:
+ move a0, a2
+ jr ra
+
+ _asm_extable 0b, .Lsmall_fixup
+ _asm_extable 1b, .Lsmall_fixup
+ _asm_extable 2b, .Llarge_fixup
+ _asm_extable 3b, .Llarge_fixup
+ _asm_extable 4b, .Llarge_fixup
+ _asm_extable 5b, .Llarge_fixup
+ _asm_extable 6b, .Llarge_fixup
+ _asm_extable 7b, .Llarge_fixup
+ _asm_extable 8b, .Llarge_fixup
+ _asm_extable 9b, .Llarge_fixup
+ _asm_extable 10b, .Llarge_fixup
+ _asm_extable 11b, .Llarge_fixup
+ _asm_extable 12b, .Llarge_fixup
+ _asm_extable 13b, .Llarge_fixup
+ _asm_extable 14b, .Llarge_fixup
+ _asm_extable 15b, .Llarge_fixup
+ _asm_extable 16b, .Llarge_fixup
+ _asm_extable 17b, .Llarge_fixup
+ _asm_extable 18b, .Llarge_fixup
+ _asm_extable 19b, .Llarge_fixup
+ _asm_extable 20b, .Llarge_fixup
+ _asm_extable 21b, .Llarge_fixup
+ _asm_extable 22b, .Llarge_fixup
+ _asm_extable 23b, .Llarge_fixup
+ _asm_extable 24b, .Llarge_fixup
+ _asm_extable 25b, .Llarge_fixup
+ _asm_extable 26b, .Llarge_fixup
+ _asm_extable 27b, .Llarge_fixup
+ _asm_extable 28b, .Llarge_fixup
+ _asm_extable 29b, .Llarge_fixup
+ _asm_extable 30b, .Llarge_fixup
+ _asm_extable 31b, .Llarge_fixup
+ _asm_extable 32b, .Llarge_fixup
+ _asm_extable 33b, .Llarge_fixup
+ _asm_extable 34b, .Lexit
+ _asm_extable 35b, .Lexit
+ _asm_extable 36b, .Lsmall_fixup
+ _asm_extable 37b, .Lsmall_fixup
+ _asm_extable 38b, .Lsmall_fixup
+ _asm_extable 39b, .Lsmall_fixup
+ _asm_extable 40b, .Lsmall_fixup
+ _asm_extable 41b, .Lsmall_fixup
+ _asm_extable 42b, .Lsmall_fixup
+ _asm_extable 43b, .Lsmall_fixup
+ _asm_extable 44b, .Lsmall_fixup
+ _asm_extable 45b, .Lsmall_fixup
+ _asm_extable 46b, .Lsmall_fixup
+ _asm_extable 47b, .Lsmall_fixup
+ _asm_extable 48b, .Lsmall_fixup
+ _asm_extable 49b, .Lsmall_fixup
+ _asm_extable 50b, .Lsmall_fixup
+ _asm_extable 51b, .Lsmall_fixup
+ _asm_extable 52b, .Lsmall_fixup
+ _asm_extable 53b, .Lsmall_fixup
+ _asm_extable 54b, .Lsmall_fixup
+ _asm_extable 55b, .Lsmall_fixup
+ _asm_extable 56b, .Lsmall_fixup
+ _asm_extable 57b, .Lsmall_fixup
+ _asm_extable 58b, .Lexit
+ _asm_extable 59b, .Lexit
SYM_FUNC_END(__copy_user_fast)
#include <asm/cpu.h>
#include <asm/regdef.h>
+.section .noinstr.text, "ax"
+
SYM_FUNC_START(memcpy)
/*
* Some CPUs support hardware unaligned access
ALTERNATIVE "b __memcpy_generic", \
"b __memcpy_fast", CPU_FEATURE_UAL
SYM_FUNC_END(memcpy)
-_ASM_NOKPROBE(memcpy)
+SYM_FUNC_ALIAS(__memcpy, memcpy)
EXPORT_SYMBOL(memcpy)
+EXPORT_SYMBOL(__memcpy)
+
+_ASM_NOKPROBE(memcpy)
+_ASM_NOKPROBE(__memcpy)
/*
* void *__memcpy_generic(void *dst, const void *src, size_t n)
#include <asm/cpu.h>
#include <asm/regdef.h>
+.section .noinstr.text, "ax"
+
SYM_FUNC_START(memmove)
- blt a0, a1, memcpy /* dst < src, memcpy */
- blt a1, a0, rmemcpy /* src < dst, rmemcpy */
- jr ra /* dst == src, return */
+ blt a0, a1, __memcpy /* dst < src, memcpy */
+ blt a1, a0, __rmemcpy /* src < dst, rmemcpy */
+ jr ra /* dst == src, return */
SYM_FUNC_END(memmove)
-_ASM_NOKPROBE(memmove)
+SYM_FUNC_ALIAS(__memmove, memmove)
EXPORT_SYMBOL(memmove)
+EXPORT_SYMBOL(__memmove)
+
+_ASM_NOKPROBE(memmove)
+_ASM_NOKPROBE(__memmove)
-SYM_FUNC_START(rmemcpy)
+SYM_FUNC_START(__rmemcpy)
/*
* Some CPUs support hardware unaligned access
*/
ALTERNATIVE "b __rmemcpy_generic", \
"b __rmemcpy_fast", CPU_FEATURE_UAL
-SYM_FUNC_END(rmemcpy)
-_ASM_NOKPROBE(rmemcpy)
+SYM_FUNC_END(__rmemcpy)
+_ASM_NOKPROBE(__rmemcpy)
/*
* void *__rmemcpy_generic(void *dst, const void *src, size_t n)
bstrins.d \r0, \r0, 63, 32
.endm
+.section .noinstr.text, "ax"
+
SYM_FUNC_START(memset)
/*
* Some CPUs support hardware unaligned access
ALTERNATIVE "b __memset_generic", \
"b __memset_fast", CPU_FEATURE_UAL
SYM_FUNC_END(memset)
-_ASM_NOKPROBE(memset)
+SYM_FUNC_ALIAS(__memset, memset)
EXPORT_SYMBOL(memset)
+EXPORT_SYMBOL(__memset)
+
+_ASM_NOKPROBE(memset)
+_ASM_NOKPROBE(__memset)
/*
* void *__memset_generic(void *s, int c, size_t n)
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * LoongArch SIMD XOR operations
+ *
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ */
+
+#include "xor_simd.h"
+
+/*
+ * Process one cache line (64 bytes) per loop. This is assuming all future
+ * popular LoongArch cores are similar performance-characteristics-wise to the
+ * current models.
+ */
+#define LINE_WIDTH 64
+
+#ifdef CONFIG_CPU_HAS_LSX
+
+#define LD(reg, base, offset) \
+ "vld $vr" #reg ", %[" #base "], " #offset "\n\t"
+#define ST(reg, base, offset) \
+ "vst $vr" #reg ", %[" #base "], " #offset "\n\t"
+#define XOR(dj, k) "vxor.v $vr" #dj ", $vr" #dj ", $vr" #k "\n\t"
+
+#define LD_INOUT_LINE(base) \
+ LD(0, base, 0) \
+ LD(1, base, 16) \
+ LD(2, base, 32) \
+ LD(3, base, 48)
+
+#define LD_AND_XOR_LINE(base) \
+ LD(4, base, 0) \
+ LD(5, base, 16) \
+ LD(6, base, 32) \
+ LD(7, base, 48) \
+ XOR(0, 4) \
+ XOR(1, 5) \
+ XOR(2, 6) \
+ XOR(3, 7)
+
+#define ST_LINE(base) \
+ ST(0, base, 0) \
+ ST(1, base, 16) \
+ ST(2, base, 32) \
+ ST(3, base, 48)
+
+#define XOR_FUNC_NAME(nr) __xor_lsx_##nr
+#include "xor_template.c"
+
+#undef LD
+#undef ST
+#undef XOR
+#undef LD_INOUT_LINE
+#undef LD_AND_XOR_LINE
+#undef ST_LINE
+#undef XOR_FUNC_NAME
+
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+
+#define LD(reg, base, offset) \
+ "xvld $xr" #reg ", %[" #base "], " #offset "\n\t"
+#define ST(reg, base, offset) \
+ "xvst $xr" #reg ", %[" #base "], " #offset "\n\t"
+#define XOR(dj, k) "xvxor.v $xr" #dj ", $xr" #dj ", $xr" #k "\n\t"
+
+#define LD_INOUT_LINE(base) \
+ LD(0, base, 0) \
+ LD(1, base, 32)
+
+#define LD_AND_XOR_LINE(base) \
+ LD(2, base, 0) \
+ LD(3, base, 32) \
+ XOR(0, 2) \
+ XOR(1, 3)
+
+#define ST_LINE(base) \
+ ST(0, base, 0) \
+ ST(1, base, 32)
+
+#define XOR_FUNC_NAME(nr) __xor_lasx_##nr
+#include "xor_template.c"
+
+#undef LD
+#undef ST
+#undef XOR
+#undef LD_INOUT_LINE
+#undef LD_AND_XOR_LINE
+#undef ST_LINE
+#undef XOR_FUNC_NAME
+
+#endif /* CONFIG_CPU_HAS_LASX */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Simple interface to link xor_simd.c and xor_simd_glue.c
+ *
+ * Separating these files ensures that no SIMD instructions are run outside of
+ * the kfpu critical section.
+ */
+
+#ifndef __LOONGARCH_LIB_XOR_SIMD_H
+#define __LOONGARCH_LIB_XOR_SIMD_H
+
+#ifdef CONFIG_CPU_HAS_LSX
+void __xor_lsx_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2);
+void __xor_lsx_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3);
+void __xor_lsx_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4);
+void __xor_lsx_5(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4, const unsigned long * __restrict p5);
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+void __xor_lasx_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2);
+void __xor_lasx_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3);
+void __xor_lasx_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4);
+void __xor_lasx_5(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2, const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4, const unsigned long * __restrict p5);
+#endif /* CONFIG_CPU_HAS_LASX */
+
+#endif /* __LOONGARCH_LIB_XOR_SIMD_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * LoongArch SIMD XOR operations
+ *
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ */
+
+#include <linux/export.h>
+#include <linux/sched.h>
+#include <asm/fpu.h>
+#include <asm/xor_simd.h>
+#include "xor_simd.h"
+
+#define MAKE_XOR_GLUE_2(flavor) \
+void xor_##flavor##_2(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2) \
+{ \
+ kernel_fpu_begin(); \
+ __xor_##flavor##_2(bytes, p1, p2); \
+ kernel_fpu_end(); \
+} \
+EXPORT_SYMBOL_GPL(xor_##flavor##_2)
+
+#define MAKE_XOR_GLUE_3(flavor) \
+void xor_##flavor##_3(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2, \
+ const unsigned long * __restrict p3) \
+{ \
+ kernel_fpu_begin(); \
+ __xor_##flavor##_3(bytes, p1, p2, p3); \
+ kernel_fpu_end(); \
+} \
+EXPORT_SYMBOL_GPL(xor_##flavor##_3)
+
+#define MAKE_XOR_GLUE_4(flavor) \
+void xor_##flavor##_4(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2, \
+ const unsigned long * __restrict p3, \
+ const unsigned long * __restrict p4) \
+{ \
+ kernel_fpu_begin(); \
+ __xor_##flavor##_4(bytes, p1, p2, p3, p4); \
+ kernel_fpu_end(); \
+} \
+EXPORT_SYMBOL_GPL(xor_##flavor##_4)
+
+#define MAKE_XOR_GLUE_5(flavor) \
+void xor_##flavor##_5(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2, \
+ const unsigned long * __restrict p3, \
+ const unsigned long * __restrict p4, \
+ const unsigned long * __restrict p5) \
+{ \
+ kernel_fpu_begin(); \
+ __xor_##flavor##_5(bytes, p1, p2, p3, p4, p5); \
+ kernel_fpu_end(); \
+} \
+EXPORT_SYMBOL_GPL(xor_##flavor##_5)
+
+#define MAKE_XOR_GLUES(flavor) \
+ MAKE_XOR_GLUE_2(flavor); \
+ MAKE_XOR_GLUE_3(flavor); \
+ MAKE_XOR_GLUE_4(flavor); \
+ MAKE_XOR_GLUE_5(flavor)
+
+#ifdef CONFIG_CPU_HAS_LSX
+MAKE_XOR_GLUES(lsx);
+#endif
+
+#ifdef CONFIG_CPU_HAS_LASX
+MAKE_XOR_GLUES(lasx);
+#endif
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ *
+ * Template for XOR operations, instantiated in xor_simd.c.
+ *
+ * Expected preprocessor definitions:
+ *
+ * - LINE_WIDTH
+ * - XOR_FUNC_NAME(nr)
+ * - LD_INOUT_LINE(buf)
+ * - LD_AND_XOR_LINE(buf)
+ * - ST_LINE(buf)
+ */
+
+void XOR_FUNC_NAME(2)(unsigned long bytes,
+ unsigned long * __restrict v1,
+ const unsigned long * __restrict v2)
+{
+ unsigned long lines = bytes / LINE_WIDTH;
+
+ do {
+ __asm__ __volatile__ (
+ LD_INOUT_LINE(v1)
+ LD_AND_XOR_LINE(v2)
+ ST_LINE(v1)
+ : : [v1] "r"(v1), [v2] "r"(v2) : "memory"
+ );
+
+ v1 += LINE_WIDTH / sizeof(unsigned long);
+ v2 += LINE_WIDTH / sizeof(unsigned long);
+ } while (--lines > 0);
+}
+
+void XOR_FUNC_NAME(3)(unsigned long bytes,
+ unsigned long * __restrict v1,
+ const unsigned long * __restrict v2,
+ const unsigned long * __restrict v3)
+{
+ unsigned long lines = bytes / LINE_WIDTH;
+
+ do {
+ __asm__ __volatile__ (
+ LD_INOUT_LINE(v1)
+ LD_AND_XOR_LINE(v2)
+ LD_AND_XOR_LINE(v3)
+ ST_LINE(v1)
+ : : [v1] "r"(v1), [v2] "r"(v2), [v3] "r"(v3) : "memory"
+ );
+
+ v1 += LINE_WIDTH / sizeof(unsigned long);
+ v2 += LINE_WIDTH / sizeof(unsigned long);
+ v3 += LINE_WIDTH / sizeof(unsigned long);
+ } while (--lines > 0);
+}
+
+void XOR_FUNC_NAME(4)(unsigned long bytes,
+ unsigned long * __restrict v1,
+ const unsigned long * __restrict v2,
+ const unsigned long * __restrict v3,
+ const unsigned long * __restrict v4)
+{
+ unsigned long lines = bytes / LINE_WIDTH;
+
+ do {
+ __asm__ __volatile__ (
+ LD_INOUT_LINE(v1)
+ LD_AND_XOR_LINE(v2)
+ LD_AND_XOR_LINE(v3)
+ LD_AND_XOR_LINE(v4)
+ ST_LINE(v1)
+ : : [v1] "r"(v1), [v2] "r"(v2), [v3] "r"(v3), [v4] "r"(v4)
+ : "memory"
+ );
+
+ v1 += LINE_WIDTH / sizeof(unsigned long);
+ v2 += LINE_WIDTH / sizeof(unsigned long);
+ v3 += LINE_WIDTH / sizeof(unsigned long);
+ v4 += LINE_WIDTH / sizeof(unsigned long);
+ } while (--lines > 0);
+}
+
+void XOR_FUNC_NAME(5)(unsigned long bytes,
+ unsigned long * __restrict v1,
+ const unsigned long * __restrict v2,
+ const unsigned long * __restrict v3,
+ const unsigned long * __restrict v4,
+ const unsigned long * __restrict v5)
+{
+ unsigned long lines = bytes / LINE_WIDTH;
+
+ do {
+ __asm__ __volatile__ (
+ LD_INOUT_LINE(v1)
+ LD_AND_XOR_LINE(v2)
+ LD_AND_XOR_LINE(v3)
+ LD_AND_XOR_LINE(v4)
+ LD_AND_XOR_LINE(v5)
+ ST_LINE(v1)
+ : : [v1] "r"(v1), [v2] "r"(v2), [v3] "r"(v3), [v4] "r"(v4),
+ [v5] "r"(v5) : "memory"
+ );
+
+ v1 += LINE_WIDTH / sizeof(unsigned long);
+ v2 += LINE_WIDTH / sizeof(unsigned long);
+ v3 += LINE_WIDTH / sizeof(unsigned long);
+ v4 += LINE_WIDTH / sizeof(unsigned long);
+ v5 += LINE_WIDTH / sizeof(unsigned long);
+ } while (--lines > 0);
+}
fault.o ioremap.o maccess.o mmap.o pgtable.o page.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
+obj-$(CONFIG_KASAN) += kasan_init.o
+
+KASAN_SANITIZE_kasan_init.o := n
current_cpu_data.cache_leaves_present = leaf;
current_cpu_data.options |= LOONGARCH_CPU_PREFETCH;
- shm_align_mask = PAGE_SIZE - 1;
}
static const pgprot_t protection_map[16] = {
#include <linux/kprobes.h>
#include <linux/perf_event.h>
#include <linux/uaccess.h>
+#include <linux/kfence.h>
#include <asm/branch.h>
#include <asm/mmu_context.h>
int show_unhandled_signals = 1;
-static void __kprobes no_context(struct pt_regs *regs, unsigned long address)
+static void __kprobes no_context(struct pt_regs *regs,
+ unsigned long write, unsigned long address)
{
const int field = sizeof(unsigned long) * 2;
if (fixup_exception(regs))
return;
+ if (kfence_handle_page_fault(address, write, regs))
+ return;
+
/*
* Oops. The kernel tried to access some bad page. We'll have to
* terminate things with extreme prejudice.
die("Oops", regs);
}
-static void __kprobes do_out_of_memory(struct pt_regs *regs, unsigned long address)
+static void __kprobes do_out_of_memory(struct pt_regs *regs,
+ unsigned long write, unsigned long address)
{
/*
* We ran out of memory, call the OOM killer, and return the userspace
* (which will retry the fault, or kill us if we got oom-killed).
*/
if (!user_mode(regs)) {
- no_context(regs, address);
+ no_context(regs, write, address);
return;
}
pagefault_out_of_memory();
{
/* Kernel mode? Handle exceptions or die */
if (!user_mode(regs)) {
- no_context(regs, address);
+ no_context(regs, write, address);
return;
}
/* Kernel mode? Handle exceptions or die */
if (!user_mode(regs)) {
- no_context(regs, address);
+ no_context(regs, write, address);
return;
}
*/
if (address & __UA_LIMIT) {
if (!user_mode(regs))
- no_context(regs, address);
+ no_context(regs, write, address);
else
do_sigsegv(regs, write, address, si_code);
return;
if (fault_signal_pending(fault, regs)) {
if (!user_mode(regs))
- no_context(regs, address);
+ no_context(regs, write, address);
return;
}
if (unlikely(fault & VM_FAULT_ERROR)) {
mmap_read_unlock(mm);
if (fault & VM_FAULT_OOM) {
- do_out_of_memory(regs, address);
+ do_out_of_memory(regs, write, address);
return;
} else if (fault & VM_FAULT_SIGSEGV) {
do_sigsegv(regs, write, address, si_code);
#include <asm/pgalloc.h>
#include <asm/tlb.h>
-/*
- * We have up to 8 empty zeroed pages so we can map one of the right colour
- * when needed. Since page is never written to after the initialization we
- * don't have to care about aliases on other CPUs.
- */
-unsigned long empty_zero_page, zero_page_mask;
+unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);
-EXPORT_SYMBOL(zero_page_mask);
-
-void setup_zero_pages(void)
-{
- unsigned int order, i;
- struct page *page;
-
- order = 0;
-
- empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
- if (!empty_zero_page)
- panic("Oh boy, that early out of memory?");
-
- page = virt_to_page((void *)empty_zero_page);
- split_page(page, order);
- for (i = 0; i < (1 << order); i++, page++)
- mark_page_reserved(page);
-
- zero_page_mask = ((PAGE_SIZE << order) - 1) & PAGE_MASK;
-}
void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr, struct vm_area_struct *vma)
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
memblock_free_all();
- setup_zero_pages(); /* Setup zeroed pages. */
}
#endif /* !CONFIG_NUMA */
#endif
#endif
-static pte_t *fixmap_pte(unsigned long addr)
+pte_t * __init populate_kernel_pte(unsigned long addr)
{
- pgd_t *pgd;
- p4d_t *p4d;
+ pgd_t *pgd = pgd_offset_k(addr);
+ p4d_t *p4d = p4d_offset(pgd, addr);
pud_t *pud;
pmd_t *pmd;
- pgd = pgd_offset_k(addr);
- p4d = p4d_offset(pgd, addr);
-
- if (pgd_none(*pgd)) {
- pud_t *new __maybe_unused;
-
- new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
- pgd_populate(&init_mm, pgd, new);
+ if (p4d_none(*p4d)) {
+ pud = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!pud)
+ panic("%s: Failed to allocate memory\n", __func__);
+ p4d_populate(&init_mm, p4d, pud);
#ifndef __PAGETABLE_PUD_FOLDED
- pud_init(new);
+ pud_init(pud);
#endif
}
pud = pud_offset(p4d, addr);
if (pud_none(*pud)) {
- pmd_t *new __maybe_unused;
-
- new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
- pud_populate(&init_mm, pud, new);
+ pmd = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!pmd)
+ panic("%s: Failed to allocate memory\n", __func__);
+ pud_populate(&init_mm, pud, pmd);
#ifndef __PAGETABLE_PMD_FOLDED
- pmd_init(new);
+ pmd_init(pmd);
#endif
}
pmd = pmd_offset(pud, addr);
- if (pmd_none(*pmd)) {
- pte_t *new __maybe_unused;
+ if (!pmd_present(*pmd)) {
+ pte_t *pte;
- new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
- pmd_populate_kernel(&init_mm, pmd, new);
+ pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!pte)
+ panic("%s: Failed to allocate memory\n", __func__);
+ pmd_populate_kernel(&init_mm, pmd, pte);
}
return pte_offset_kernel(pmd, addr);
BUG_ON(idx <= FIX_HOLE || idx >= __end_of_fixed_addresses);
- ptep = fixmap_pte(addr);
+ ptep = populate_kernel_pte(addr);
if (!pte_none(*ptep)) {
pte_ERROR(*ptep);
return;
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+#define pr_fmt(fmt) "kasan: " fmt
+#include <linux/kasan.h>
+#include <linux/memblock.h>
+#include <linux/sched/task.h>
+
+#include <asm/tlbflush.h>
+#include <asm/pgalloc.h>
+#include <asm-generic/sections.h>
+
+static pgd_t kasan_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
+
+#ifdef __PAGETABLE_PUD_FOLDED
+#define __p4d_none(early, p4d) (0)
+#else
+#define __p4d_none(early, p4d) (early ? (p4d_val(p4d) == 0) : \
+(__pa(p4d_val(p4d)) == (unsigned long)__pa(kasan_early_shadow_pud)))
+#endif
+
+#ifdef __PAGETABLE_PMD_FOLDED
+#define __pud_none(early, pud) (0)
+#else
+#define __pud_none(early, pud) (early ? (pud_val(pud) == 0) : \
+(__pa(pud_val(pud)) == (unsigned long)__pa(kasan_early_shadow_pmd)))
+#endif
+
+#define __pmd_none(early, pmd) (early ? (pmd_val(pmd) == 0) : \
+(__pa(pmd_val(pmd)) == (unsigned long)__pa(kasan_early_shadow_pte)))
+
+#define __pte_none(early, pte) (early ? pte_none(pte) : \
+((pte_val(pte) & _PFN_MASK) == (unsigned long)__pa(kasan_early_shadow_page)))
+
+bool kasan_early_stage = true;
+
+/*
+ * Alloc memory for shadow memory page table.
+ */
+static phys_addr_t __init kasan_alloc_zeroed_page(int node)
+{
+ void *p = memblock_alloc_try_nid(PAGE_SIZE, PAGE_SIZE,
+ __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, node);
+ if (!p)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx nid=%d from=%llx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE, node, __pa(MAX_DMA_ADDRESS));
+
+ return __pa(p);
+}
+
+static pte_t *__init kasan_pte_offset(pmd_t *pmdp, unsigned long addr, int node, bool early)
+{
+ if (__pmd_none(early, READ_ONCE(*pmdp))) {
+ phys_addr_t pte_phys = early ?
+ __pa_symbol(kasan_early_shadow_pte) : kasan_alloc_zeroed_page(node);
+ if (!early)
+ memcpy(__va(pte_phys), kasan_early_shadow_pte, sizeof(kasan_early_shadow_pte));
+ pmd_populate_kernel(NULL, pmdp, (pte_t *)__va(pte_phys));
+ }
+
+ return pte_offset_kernel(pmdp, addr);
+}
+
+static pmd_t *__init kasan_pmd_offset(pud_t *pudp, unsigned long addr, int node, bool early)
+{
+ if (__pud_none(early, READ_ONCE(*pudp))) {
+ phys_addr_t pmd_phys = early ?
+ __pa_symbol(kasan_early_shadow_pmd) : kasan_alloc_zeroed_page(node);
+ if (!early)
+ memcpy(__va(pmd_phys), kasan_early_shadow_pmd, sizeof(kasan_early_shadow_pmd));
+ pud_populate(&init_mm, pudp, (pmd_t *)__va(pmd_phys));
+ }
+
+ return pmd_offset(pudp, addr);
+}
+
+static pud_t *__init kasan_pud_offset(p4d_t *p4dp, unsigned long addr, int node, bool early)
+{
+ if (__p4d_none(early, READ_ONCE(*p4dp))) {
+ phys_addr_t pud_phys = early ?
+ __pa_symbol(kasan_early_shadow_pud) : kasan_alloc_zeroed_page(node);
+ if (!early)
+ memcpy(__va(pud_phys), kasan_early_shadow_pud, sizeof(kasan_early_shadow_pud));
+ p4d_populate(&init_mm, p4dp, (pud_t *)__va(pud_phys));
+ }
+
+ return pud_offset(p4dp, addr);
+}
+
+static void __init kasan_pte_populate(pmd_t *pmdp, unsigned long addr,
+ unsigned long end, int node, bool early)
+{
+ unsigned long next;
+ pte_t *ptep = kasan_pte_offset(pmdp, addr, node, early);
+
+ do {
+ phys_addr_t page_phys = early ?
+ __pa_symbol(kasan_early_shadow_page)
+ : kasan_alloc_zeroed_page(node);
+ next = addr + PAGE_SIZE;
+ set_pte(ptep, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
+ } while (ptep++, addr = next, addr != end && __pte_none(early, READ_ONCE(*ptep)));
+}
+
+static void __init kasan_pmd_populate(pud_t *pudp, unsigned long addr,
+ unsigned long end, int node, bool early)
+{
+ unsigned long next;
+ pmd_t *pmdp = kasan_pmd_offset(pudp, addr, node, early);
+
+ do {
+ next = pmd_addr_end(addr, end);
+ kasan_pte_populate(pmdp, addr, next, node, early);
+ } while (pmdp++, addr = next, addr != end && __pmd_none(early, READ_ONCE(*pmdp)));
+}
+
+static void __init kasan_pud_populate(p4d_t *p4dp, unsigned long addr,
+ unsigned long end, int node, bool early)
+{
+ unsigned long next;
+ pud_t *pudp = kasan_pud_offset(p4dp, addr, node, early);
+
+ do {
+ next = pud_addr_end(addr, end);
+ kasan_pmd_populate(pudp, addr, next, node, early);
+ } while (pudp++, addr = next, addr != end);
+}
+
+static void __init kasan_p4d_populate(pgd_t *pgdp, unsigned long addr,
+ unsigned long end, int node, bool early)
+{
+ unsigned long next;
+ p4d_t *p4dp = p4d_offset(pgdp, addr);
+
+ do {
+ next = p4d_addr_end(addr, end);
+ kasan_pud_populate(p4dp, addr, next, node, early);
+ } while (p4dp++, addr = next, addr != end);
+}
+
+static void __init kasan_pgd_populate(unsigned long addr, unsigned long end,
+ int node, bool early)
+{
+ unsigned long next;
+ pgd_t *pgdp;
+
+ pgdp = pgd_offset_k(addr);
+
+ do {
+ next = pgd_addr_end(addr, end);
+ kasan_p4d_populate(pgdp, addr, next, node, early);
+ } while (pgdp++, addr = next, addr != end);
+
+}
+
+/* Set up full kasan mappings, ensuring that the mapped pages are zeroed */
+static void __init kasan_map_populate(unsigned long start, unsigned long end,
+ int node)
+{
+ kasan_pgd_populate(start & PAGE_MASK, PAGE_ALIGN(end), node, false);
+}
+
+asmlinkage void __init kasan_early_init(void)
+{
+ BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_START, PGDIR_SIZE));
+ BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE));
+}
+
+static inline void kasan_set_pgd(pgd_t *pgdp, pgd_t pgdval)
+{
+ WRITE_ONCE(*pgdp, pgdval);
+}
+
+static void __init clear_pgds(unsigned long start, unsigned long end)
+{
+ /*
+ * Remove references to kasan page tables from
+ * swapper_pg_dir. pgd_clear() can't be used
+ * here because it's nop on 2,3-level pagetable setups
+ */
+ for (; start < end; start += PGDIR_SIZE)
+ kasan_set_pgd((pgd_t *)pgd_offset_k(start), __pgd(0));
+}
+
+void __init kasan_init(void)
+{
+ u64 i;
+ phys_addr_t pa_start, pa_end;
+
+ /*
+ * PGD was populated as invalid_pmd_table or invalid_pud_table
+ * in pagetable_init() which depends on how many levels of page
+ * table you are using, but we had to clean the gpd of kasan
+ * shadow memory, as the pgd value is none-zero.
+ * The assertion pgd_none is going to be false and the formal populate
+ * afterwards is not going to create any new pgd at all.
+ */
+ memcpy(kasan_pg_dir, swapper_pg_dir, sizeof(kasan_pg_dir));
+ csr_write64(__pa_symbol(kasan_pg_dir), LOONGARCH_CSR_PGDH);
+ local_flush_tlb_all();
+
+ clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
+
+ /* Maps everything to a single page of zeroes */
+ kasan_pgd_populate(KASAN_SHADOW_START, KASAN_SHADOW_END, NUMA_NO_NODE, true);
+
+ kasan_populate_early_shadow(kasan_mem_to_shadow((void *)VMALLOC_START),
+ kasan_mem_to_shadow((void *)KFENCE_AREA_END));
+
+ kasan_early_stage = false;
+
+ /* Populate the linear mapping */
+ for_each_mem_range(i, &pa_start, &pa_end) {
+ void *start = (void *)phys_to_virt(pa_start);
+ void *end = (void *)phys_to_virt(pa_end);
+
+ if (start >= end)
+ break;
+
+ kasan_map_populate((unsigned long)kasan_mem_to_shadow(start),
+ (unsigned long)kasan_mem_to_shadow(end), NUMA_NO_NODE);
+ }
+
+ /* Populate modules mapping */
+ kasan_map_populate((unsigned long)kasan_mem_to_shadow((void *)MODULES_VADDR),
+ (unsigned long)kasan_mem_to_shadow((void *)MODULES_END), NUMA_NO_NODE);
+ /*
+ * KAsan may reuse the contents of kasan_early_shadow_pte directly, so we
+ * should make sure that it maps the zero page read-only.
+ */
+ for (i = 0; i < PTRS_PER_PTE; i++)
+ set_pte(&kasan_early_shadow_pte[i],
+ pfn_pte(__phys_to_pfn(__pa_symbol(kasan_early_shadow_page)), PAGE_KERNEL_RO));
+
+ memset(kasan_early_shadow_page, 0, PAGE_SIZE);
+ csr_write64(__pa_symbol(swapper_pg_dir), LOONGARCH_CSR_PGDH);
+ local_flush_tlb_all();
+
+ /* At this point kasan is fully initialized. Enable error messages */
+ init_task.kasan_depth = 0;
+ pr_info("KernelAddressSanitizer initialized.\n");
+}
#include <linux/mm.h>
#include <linux/mman.h>
-unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
-EXPORT_SYMBOL(shm_align_mask);
+#define SHM_ALIGN_MASK (SHMLBA - 1)
-#define COLOUR_ALIGN(addr, pgoff) \
- ((((addr) + shm_align_mask) & ~shm_align_mask) + \
- (((pgoff) << PAGE_SHIFT) & shm_align_mask))
+#define COLOUR_ALIGN(addr, pgoff) \
+ ((((addr) + SHM_ALIGN_MASK) & ~SHM_ALIGN_MASK) \
+ + (((pgoff) << PAGE_SHIFT) & SHM_ALIGN_MASK))
enum mmap_allocation_direction {UP, DOWN};
* cache aliasing constraints.
*/
if ((flags & MAP_SHARED) &&
- ((addr - (pgoff << PAGE_SHIFT)) & shm_align_mask))
+ ((addr - (pgoff << PAGE_SHIFT)) & SHM_ALIGN_MASK))
return -EINVAL;
return addr;
}
}
info.length = len;
- info.align_mask = do_color_align ? (PAGE_MASK & shm_align_mask) : 0;
+ info.align_mask = do_color_align ? (PAGE_MASK & SHM_ALIGN_MASK) : 0;
info.align_offset = pgoff << PAGE_SHIFT;
if (dir == DOWN) {
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
+struct page *dmw_virt_to_page(unsigned long kaddr)
+{
+ return pfn_to_page(virt_to_pfn(kaddr));
+}
+EXPORT_SYMBOL_GPL(dmw_virt_to_page);
+
+struct page *tlb_virt_to_page(unsigned long kaddr)
+{
+ return pfn_to_page(pte_pfn(*virt_to_kpte(kaddr)));
+}
+EXPORT_SYMBOL_GPL(tlb_virt_to_page);
+
pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *init, *ret = NULL;
# SPDX-License-Identifier: GPL-2.0
# Objects to go into the VDSO.
+KASAN_SANITIZE := n
+KCOV_INSTRUMENT := n
+
# Include the generic Makefile to check the built vdso.
include $(srctree)/lib/vdso/Makefile
n = bytes;
if (!bio_add_hw_page(rq->q, bio, page, n, offs,
- max_sectors, &same_page)) {
- if (same_page)
- bio_release_page(bio, page);
+ max_sectors, &same_page))
break;
- }
+ if (same_page)
+ bio_release_page(bio, page);
bytes -= n;
offs = 0;
}
return true;
}
+static unsigned int calculate_io_allowed(u32 iops_limit,
+ unsigned long jiffy_elapsed)
+{
+ unsigned int io_allowed;
+ u64 tmp;
+
+ /*
+ * jiffy_elapsed should not be a big value as minimum iops can be
+ * 1 then at max jiffy elapsed should be equivalent of 1 second as we
+ * will allow dispatch after 1 second and after that slice should
+ * have been trimmed.
+ */
+
+ tmp = (u64)iops_limit * jiffy_elapsed;
+ do_div(tmp, HZ);
+
+ if (tmp > UINT_MAX)
+ io_allowed = UINT_MAX;
+ else
+ io_allowed = tmp;
+
+ return io_allowed;
+}
+
+static u64 calculate_bytes_allowed(u64 bps_limit, unsigned long jiffy_elapsed)
+{
+ return mul_u64_u64_div_u64(bps_limit, (u64)jiffy_elapsed, (u64)HZ);
+}
+
/* Trim the used slices and adjust slice start accordingly */
static inline void throtl_trim_slice(struct throtl_grp *tg, bool rw)
{
- unsigned long nr_slices, time_elapsed, io_trim;
- u64 bytes_trim, tmp;
+ unsigned long time_elapsed;
+ long long bytes_trim;
+ int io_trim;
BUG_ON(time_before(tg->slice_end[rw], tg->slice_start[rw]));
throtl_set_slice_end(tg, rw, jiffies + tg->td->throtl_slice);
- time_elapsed = jiffies - tg->slice_start[rw];
-
- nr_slices = time_elapsed / tg->td->throtl_slice;
-
- if (!nr_slices)
+ time_elapsed = rounddown(jiffies - tg->slice_start[rw],
+ tg->td->throtl_slice);
+ if (!time_elapsed)
return;
- tmp = tg_bps_limit(tg, rw) * tg->td->throtl_slice * nr_slices;
- do_div(tmp, HZ);
- bytes_trim = tmp;
- io_trim = (tg_iops_limit(tg, rw) * tg->td->throtl_slice * nr_slices) /
- HZ;
-
- if (!bytes_trim && !io_trim)
+ bytes_trim = calculate_bytes_allowed(tg_bps_limit(tg, rw),
+ time_elapsed) +
+ tg->carryover_bytes[rw];
+ io_trim = calculate_io_allowed(tg_iops_limit(tg, rw), time_elapsed) +
+ tg->carryover_ios[rw];
+ if (bytes_trim <= 0 && io_trim <= 0)
return;
- if (tg->bytes_disp[rw] >= bytes_trim)
+ tg->carryover_bytes[rw] = 0;
+ if ((long long)tg->bytes_disp[rw] >= bytes_trim)
tg->bytes_disp[rw] -= bytes_trim;
else
tg->bytes_disp[rw] = 0;
- if (tg->io_disp[rw] >= io_trim)
+ tg->carryover_ios[rw] = 0;
+ if ((int)tg->io_disp[rw] >= io_trim)
tg->io_disp[rw] -= io_trim;
else
tg->io_disp[rw] = 0;
- tg->slice_start[rw] += nr_slices * tg->td->throtl_slice;
+ tg->slice_start[rw] += time_elapsed;
throtl_log(&tg->service_queue,
- "[%c] trim slice nr=%lu bytes=%llu io=%lu start=%lu end=%lu jiffies=%lu",
- rw == READ ? 'R' : 'W', nr_slices, bytes_trim, io_trim,
- tg->slice_start[rw], tg->slice_end[rw], jiffies);
-}
-
-static unsigned int calculate_io_allowed(u32 iops_limit,
- unsigned long jiffy_elapsed)
-{
- unsigned int io_allowed;
- u64 tmp;
-
- /*
- * jiffy_elapsed should not be a big value as minimum iops can be
- * 1 then at max jiffy elapsed should be equivalent of 1 second as we
- * will allow dispatch after 1 second and after that slice should
- * have been trimmed.
- */
-
- tmp = (u64)iops_limit * jiffy_elapsed;
- do_div(tmp, HZ);
-
- if (tmp > UINT_MAX)
- io_allowed = UINT_MAX;
- else
- io_allowed = tmp;
-
- return io_allowed;
-}
-
-static u64 calculate_bytes_allowed(u64 bps_limit, unsigned long jiffy_elapsed)
-{
- return mul_u64_u64_div_u64(bps_limit, (u64)jiffy_elapsed, (u64)HZ);
+ "[%c] trim slice nr=%lu bytes=%lld io=%d start=%lu end=%lu jiffies=%lu",
+ rw == READ ? 'R' : 'W', time_elapsed / tg->td->throtl_slice,
+ bytes_trim, io_trim, tg->slice_start[rw], tg->slice_end[rw],
+ jiffies);
}
static void __tg_update_carryover(struct throtl_grp *tg, bool rw)
__tg_update_carryover(tg, WRITE);
/* see comments in struct throtl_grp for meaning of these fields. */
- throtl_log(&tg->service_queue, "%s: %llu %llu %u %u\n", __func__,
+ throtl_log(&tg->service_queue, "%s: %lld %lld %d %d\n", __func__,
tg->carryover_bytes[READ], tg->carryover_bytes[WRITE],
tg->carryover_ios[READ], tg->carryover_ios[WRITE]);
}
u32 iops_limit)
{
bool rw = bio_data_dir(bio);
- unsigned int io_allowed;
+ int io_allowed;
unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd;
if (iops_limit == UINT_MAX) {
jiffy_elapsed_rnd = roundup(jiffy_elapsed + 1, tg->td->throtl_slice);
io_allowed = calculate_io_allowed(iops_limit, jiffy_elapsed_rnd) +
tg->carryover_ios[rw];
- if (tg->io_disp[rw] + 1 <= io_allowed) {
+ if (io_allowed > 0 && tg->io_disp[rw] + 1 <= io_allowed)
return 0;
- }
/* Calc approx time to dispatch */
jiffy_wait = jiffy_elapsed_rnd - jiffy_elapsed;
u64 bps_limit)
{
bool rw = bio_data_dir(bio);
- u64 bytes_allowed, extra_bytes;
+ long long bytes_allowed;
+ u64 extra_bytes;
unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd;
unsigned int bio_size = throtl_bio_data_size(bio);
jiffy_elapsed_rnd = roundup(jiffy_elapsed_rnd, tg->td->throtl_slice);
bytes_allowed = calculate_bytes_allowed(bps_limit, jiffy_elapsed_rnd) +
tg->carryover_bytes[rw];
- if (tg->bytes_disp[rw] + bio_size <= bytes_allowed) {
+ if (bytes_allowed > 0 && tg->bytes_disp[rw] + bio_size <= bytes_allowed)
return 0;
- }
/* Calc approx time to dispatch */
extra_bytes = tg->bytes_disp[rw] + bio_size - bytes_allowed;
* bytes/ios are waited already in previous configuration, and they will
* be used to calculate wait time under new configuration.
*/
- uint64_t carryover_bytes[2];
- unsigned int carryover_ios[2];
+ long long carryover_bytes[2];
+ int carryover_ios[2];
unsigned long last_check_time;
iov_iter_truncate(from, size);
}
- ret = file_remove_privs(file);
- if (ret)
- return ret;
-
ret = file_update_time(file);
if (ret)
return ret;
struct blkpg_partition p;
long long start, length;
+ if (disk->flags & GENHD_FL_NO_PART)
+ return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))
do {
int sent;
- bvec_set_page(&bvec, page, offset, len);
+ bvec_set_page(&bvec, page, len, offset);
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, len);
sent = sock_sendmsg(socket, &msg);
struct nullb_queue *nq = hctx->driver_data;
LIST_HEAD(list);
int nr = 0;
+ struct request *rq;
spin_lock(&nq->poll_lock);
list_splice_init(&nq->poll_list, &list);
+ list_for_each_entry(rq, &list, queuelist)
+ blk_mq_set_request_complete(rq);
spin_unlock(&nq->poll_lock);
while (!list_empty(&list)) {
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq);
- pr_info("rq %p timed out\n", rq);
-
if (hctx->type == HCTX_TYPE_POLL) {
struct nullb_queue *nq = hctx->driver_data;
spin_lock(&nq->poll_lock);
+ /* The request may have completed meanwhile. */
+ if (blk_mq_request_completed(rq)) {
+ spin_unlock(&nq->poll_lock);
+ return BLK_EH_DONE;
+ }
list_del_init(&rq->queuelist);
spin_unlock(&nq->poll_lock);
}
+ pr_info("rq %p timed out\n", rq);
+
/*
* If the device is marked as blocking (i.e. memory backed or zoned
* device), the submission path may be blocked waiting for resources
return 0;
}
+static int zynq_gpio_irq_reqres(struct irq_data *d)
+{
+ struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+ int ret;
+
+ ret = pm_runtime_resume_and_get(chip->parent);
+ if (ret < 0)
+ return ret;
+
+ return gpiochip_reqres_irq(chip, d->hwirq);
+}
+
+static void zynq_gpio_irq_relres(struct irq_data *d)
+{
+ struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+
+ gpiochip_relres_irq(chip, d->hwirq);
+ pm_runtime_put(chip->parent);
+}
+
/* irq chip descriptor */
static const struct irq_chip zynq_gpio_level_irqchip = {
.name = DRIVER_NAME,
.irq_unmask = zynq_gpio_irq_unmask,
.irq_set_type = zynq_gpio_set_irq_type,
.irq_set_wake = zynq_gpio_set_wake,
+ .irq_request_resources = zynq_gpio_irq_reqres,
+ .irq_release_resources = zynq_gpio_irq_relres,
.flags = IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED |
IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
- GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static const struct irq_chip zynq_gpio_edge_irqchip = {
.irq_unmask = zynq_gpio_irq_unmask,
.irq_set_type = zynq_gpio_set_irq_type,
.irq_set_wake = zynq_gpio_set_wake,
+ .irq_request_resources = zynq_gpio_irq_reqres,
+ .irq_release_resources = zynq_gpio_irq_relres,
.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
- GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static void zynq_gpio_handle_bank_irq(struct zynq_gpio *gpio,
ndev->debugfs_dir =
debugfs_create_dir(pci_name(ndev->ntb.pdev),
debugfs_dir);
- if (IS_ERR(ndev->debugfs_dir))
- ndev->debugfs_info = NULL;
- else
- ndev->debugfs_info =
- debugfs_create_file("info", S_IRUSR,
- ndev->debugfs_dir, ndev,
- &amd_ntb_debugfs_info);
+ ndev->debugfs_info =
+ debugfs_create_file("info", S_IRUSR,
+ ndev->debugfs_dir, ndev,
+ &amd_ntb_debugfs_info);
}
}
return 0;
}
-static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp)
+static void ntb_qp_link_context_reset(struct ntb_transport_qp *qp)
{
qp->link_is_up = false;
qp->active = false;
qp->tx_async = 0;
}
+static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp)
+{
+ ntb_qp_link_context_reset(qp);
+ if (qp->remote_rx_info)
+ qp->remote_rx_info->entry = qp->rx_max_entry - 1;
+}
+
static void ntb_qp_link_cleanup(struct ntb_transport_qp *qp)
{
struct ntb_transport_ctx *nt = qp->transport;
qp->ndev = nt->ndev;
qp->client_ready = false;
qp->event_handler = NULL;
- ntb_qp_link_down_reset(qp);
+ ntb_qp_link_context_reset(qp);
if (mw_num < qp_count % mw_count)
num_qps_mw = qp_count / mw_count + 1;
static int ntb_process_tx(struct ntb_transport_qp *qp,
struct ntb_queue_entry *entry)
{
- if (qp->tx_index == qp->remote_rx_info->entry) {
+ if (!ntb_transport_tx_free_entry(qp)) {
qp->tx_ring_full++;
return -EAGAIN;
}
struct ntb_queue_entry *entry;
int rc;
- if (!qp || !qp->link_is_up || !len)
+ if (!qp || !len)
return -EINVAL;
+ /* If the qp link is down already, just ignore. */
+ if (!qp->link_is_up)
+ return 0;
+
entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q);
if (!entry) {
qp->tx_err_no_buf++;
unsigned int head = qp->tx_index;
unsigned int tail = qp->remote_rx_info->entry;
- return tail > head ? tail - head : qp->tx_max_entry + tail - head;
+ return tail >= head ? tail - head : qp->tx_max_entry + tail - head;
}
EXPORT_SYMBOL_GPL(ntb_transport_tx_free_entry);
struct pci_dev *pdev = perf->ntb->pdev;
perf->dbgfs_dir = debugfs_create_dir(pci_name(pdev), perf_dbgfs_topdir);
- if (!perf->dbgfs_dir) {
+ if (IS_ERR(perf->dbgfs_dir)) {
dev_warn(&perf->ntb->dev, "DebugFS unsupported\n");
return;
}
if (*offp)
return 0;
- buf = kmalloc(size + 1, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- if (copy_from_user(buf, ubuf, size)) {
- kfree(buf);
- return -EFAULT;
- }
-
- buf[size] = 0;
+ buf = memdup_user_nul(ubuf, size);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
n = sscanf(buf, "%c %lli", &cmd, &bits);
tc->dbgfs_dir = debugfs_create_dir(dev_name(&tc->ntb->dev),
tool_dbgfs_topdir);
- if (!tc->dbgfs_dir)
- return;
debugfs_create_file("port", 0600, tc->dbgfs_dir,
tc, &tool_port_fops);
config PCI_DYNAMIC_OF_NODES
bool "Create Device tree nodes for PCI devices"
- depends on OF
+ depends on OF_IRQ
select OF_DYNAMIC
help
This option enables support for generating device tree nodes for some
res = window->res;
if (!res->flags && !res->start && !res->end) {
release_resource(res);
+ resource_list_destroy_entry(window);
continue;
}
*/
static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
{
- if ((dev->device & 0xffc0) == 0x2340 || dev->device == 0x1eb8)
+ if ((dev->device & 0xffc0) == 0x2340)
quirk_no_bus_reset(dev);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
#include "../cxl/pmu.h"
#define CXL_PMU_CAP_REG 0x0
-#define CXL_PMU_CAP_NUM_COUNTERS_MSK GENMASK_ULL(4, 0)
+#define CXL_PMU_CAP_NUM_COUNTERS_MSK GENMASK_ULL(5, 0)
#define CXL_PMU_CAP_COUNTER_WIDTH_MSK GENMASK_ULL(15, 8)
#define CXL_PMU_CAP_NUM_EVN_CAP_REG_SUP_MSK GENMASK_ULL(24, 20)
#define CXL_PMU_CAP_FILTERS_SUP_MSK GENMASK_ULL(39, 32)
struct thermal_zone_params tzp = {
.no_hwmon = IS_ENABLED(CONFIG_POWER_SUPPLY_HWMON)
};
- psy->tzd = thermal_zone_device_register(psy->desc->name,
- 0, 0, psy, &psy_tzd_ops, &tzp, 0, 0);
+ psy->tzd = thermal_tripless_zone_device_register(psy->desc->name,
+ psy, &psy_tzd_ops, &tzp);
if (IS_ERR(psy->tzd))
return PTR_ERR(psy->tzd);
ret = thermal_zone_device_enable(psy->tzd);
RAPL_DOMAIN_REG_LIMIT, ARBITRARY_UNIT, 0),
[PL2_CLAMP] = PRIMITIVE_INFO_INIT(PL2_CLAMP, POWER_LIMIT2_CLAMP, 48,
RAPL_DOMAIN_REG_LIMIT, ARBITRARY_UNIT, 0),
- [PL4_ENABLE] = PRIMITIVE_INFO_INIT(PL4_ENABLE, POWER_LIMIT4_MASK, 0,
- RAPL_DOMAIN_REG_PL4, ARBITRARY_UNIT, 0),
[TIME_WINDOW1] = PRIMITIVE_INFO_INIT(TIME_WINDOW1, TIME_WINDOW1_MASK, 17,
RAPL_DOMAIN_REG_LIMIT, TIME_UNIT, 0),
[TIME_WINDOW2] = PRIMITIVE_INFO_INIT(TIME_WINDOW2, TIME_WINDOW2_MASK, 49,
}
}
- if (rapl_read_pl_data(rd, i, PL_ENABLE, false, &val64))
+ if (rapl_read_pl_data(rd, i, PL_LIMIT, false, &val64))
rd->rpl[i].name = NULL;
}
}
static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
-#define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 +\
- /* SSID */ 4 + 1 + /* unit addr */ 2 + 1 +\
- /* vduit */ 32 + 1)
-
static ssize_t
dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
+ char uid_string[DASD_UID_STRLEN];
struct dasd_device *device;
struct dasd_uid uid;
- char uid_string[UID_STRLEN];
char ua_string[3];
device = dasd_device_from_cdev(to_ccwdev(dev));
create_uid(conf, &uid);
if (strlen(uid.vduit) > 0)
- snprintf(print_uid, sizeof(*print_uid),
+ snprintf(print_uid, DASD_UID_STRLEN,
"%s.%s.%04x.%02x.%s",
uid.vendor, uid.serial, uid.ssid,
uid.real_unit_addr, uid.vduit);
else
- snprintf(print_uid, sizeof(*print_uid),
+ snprintf(print_uid, DASD_UID_STRLEN,
"%s.%s.%04x.%02x",
uid.vendor, uid.serial, uid.ssid,
uid.real_unit_addr);
static int dasd_eckd_check_cabling(struct dasd_device *device,
void *conf_data, __u8 lpm)
{
+ char print_path_uid[DASD_UID_STRLEN], print_device_uid[DASD_UID_STRLEN];
struct dasd_eckd_private *private = device->private;
- char print_path_uid[60], print_device_uid[60];
struct dasd_conf path_conf;
path_conf.data = conf_data;
__u8 path_rcd_buf[DASD_ECKD_RCD_DATA_SIZE];
__u8 lpm, opm, npm, ppm, epm, hpfpm, cablepm;
struct dasd_conf_data *conf_data;
+ char print_uid[DASD_UID_STRLEN];
struct dasd_conf path_conf;
unsigned long flags;
- char print_uid[60];
int rc, pos;
opm = 0;
static int dasd_eckd_reload_device(struct dasd_device *device)
{
struct dasd_eckd_private *private = device->private;
+ char print_uid[DASD_UID_STRLEN];
int rc, old_base;
- char print_uid[60];
struct dasd_uid uid;
unsigned long flags;
char vduit[33];
};
+#define DASD_UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 + \
+ /* SSID */ 4 + 1 + /* unit addr */ 2 + 1 + \
+ /* vduit */ 32 + 1)
+
/*
* PPRC Status data
*/
/* Wait the sensors to be valid */
armada_wait_sensor_validity(priv);
- tz = thermal_zone_device_register(priv->zone_name, 0, 0, priv,
- &legacy_ops, NULL, 0, 0);
+ tz = thermal_tripless_zone_device_register(priv->zone_name,
+ priv, &legacy_ops,
+ NULL);
if (IS_ERR(tz)) {
dev_err(&pdev->dev,
"Failed to register thermal zone device\n");
return ret;
}
- thermal = thermal_zone_device_register("dove_thermal", 0, 0,
- priv, &ops, NULL, 0, 0);
+ thermal = thermal_tripless_zone_device_register("dove_thermal", priv,
+ &ops, NULL);
if (IS_ERR(thermal)) {
dev_err(&pdev->dev,
"Failed to register thermal zone device\n");
evaluate_odvp(priv);
- priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
- priv, &int3400_thermal_ops,
- &int3400_thermal_params, 0, 0);
+ priv->thermal = thermal_tripless_zone_device_register("INT3400 Thermal", priv,
+ &int3400_thermal_ops,
+ &int3400_thermal_params);
if (IS_ERR(priv->thermal)) {
result = PTR_ERR(priv->thermal);
goto free_art_trt;
if (IS_ERR(priv->sensor))
return PTR_ERR(priv->sensor);
- thermal = thermal_zone_device_register("kirkwood_thermal", 0, 0,
- priv, &ops, NULL, 0, 0);
+ thermal = thermal_tripless_zone_device_register("kirkwood_thermal",
+ priv, &ops, NULL);
if (IS_ERR(thermal)) {
dev_err(&pdev->dev,
"Failed to register thermal zone device\n");
stdev->flags = val;
writel_relaxed(stdev->flags, stdev->thermal_base);
- spear_thermal = thermal_zone_device_register("spear_thermal", 0, 0,
- stdev, &ops, NULL, 0, 0);
+ spear_thermal = thermal_tripless_zone_device_register("spear_thermal",
+ stdev, &ops, NULL);
if (IS_ERR(spear_thermal)) {
dev_err(&pdev->dev, "thermal zone device is NULL\n");
ret = PTR_ERR(spear_thermal);
}
EXPORT_SYMBOL_GPL(thermal_zone_device_register_with_trips);
-struct thermal_zone_device *thermal_zone_device_register(const char *type, int ntrips, int mask,
- void *devdata, struct thermal_zone_device_ops *ops,
- const struct thermal_zone_params *tzp, int passive_delay,
- int polling_delay)
+struct thermal_zone_device *thermal_tripless_zone_device_register(
+ const char *type,
+ void *devdata,
+ struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_params *tzp)
{
- return thermal_zone_device_register_with_trips(type, NULL, ntrips, mask,
- devdata, ops, tzp,
- passive_delay, polling_delay);
+ return thermal_zone_device_register_with_trips(type, NULL, 0, 0, devdata,
+ ops, tzp, 0, 0);
}
-EXPORT_SYMBOL_GPL(thermal_zone_device_register);
+EXPORT_SYMBOL_GPL(thermal_tripless_zone_device_register);
void *thermal_zone_device_priv(struct thermal_zone_device *tzd)
{
config SMB_SERVER
- tristate "SMB3 server support (EXPERIMENTAL)"
+ tristate "SMB3 server support"
depends on INET
depends on MULTIUSER
depends on FILE_LOCKING
if (ret)
goto err_crypto_destroy;
- pr_warn_once("The ksmbd server is experimental\n");
-
return 0;
err_crypto_destroy:
int kasan_populate_early_shadow(const void *shadow_start,
const void *shadow_end);
+#ifndef __HAVE_ARCH_SHADOW_MAP
static inline void *kasan_mem_to_shadow(const void *addr)
{
return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT)
+ KASAN_SHADOW_OFFSET;
}
+#endif
int kasan_add_zero_shadow(void *start, unsigned long size);
void kasan_remove_zero_shadow(void *start, unsigned long size);
extern const struct raid6_calls raid6_vpermxor2;
extern const struct raid6_calls raid6_vpermxor4;
extern const struct raid6_calls raid6_vpermxor8;
+extern const struct raid6_calls raid6_lsx;
+extern const struct raid6_calls raid6_lasx;
struct raid6_recov_calls {
void (*data2)(int, size_t, int, int, void **);
extern const struct raid6_recov_calls raid6_recov_avx512;
extern const struct raid6_recov_calls raid6_recov_s390xc;
extern const struct raid6_recov_calls raid6_recov_neon;
+extern const struct raid6_recov_calls raid6_recov_lsx;
+extern const struct raid6_recov_calls raid6_recov_lasx;
extern const struct raid6_calls raid6_neonx1;
extern const struct raid6_calls raid6_neonx2;
#endif
#ifdef CONFIG_THERMAL
-struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
- void *, struct thermal_zone_device_ops *,
- const struct thermal_zone_params *, int, int);
-
-void thermal_zone_device_unregister(struct thermal_zone_device *);
-
-struct thermal_zone_device *
-thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int, int,
- void *, struct thermal_zone_device_ops *,
- const struct thermal_zone_params *, int, int);
+struct thermal_zone_device *thermal_zone_device_register_with_trips(
+ const char *type,
+ struct thermal_trip *trips,
+ int num_trips, int mask,
+ void *devdata,
+ struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_params *tzp,
+ int passive_delay, int polling_delay);
+
+struct thermal_zone_device *thermal_tripless_zone_device_register(
+ const char *type,
+ void *devdata,
+ struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_params *tzp);
+
+void thermal_zone_device_unregister(struct thermal_zone_device *tz);
void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
int thermal_zone_device_disable(struct thermal_zone_device *tz);
void thermal_zone_device_critical(struct thermal_zone_device *tz);
#else
-static inline struct thermal_zone_device *thermal_zone_device_register(
- const char *type, int trips, int mask, void *devdata,
- struct thermal_zone_device_ops *ops,
- const struct thermal_zone_params *tzp,
- int passive_delay, int polling_delay)
+static inline struct thermal_zone_device *thermal_zone_device_register_with_trips(
+ const char *type,
+ struct thermal_trip *trips,
+ int num_trips, int mask,
+ void *devdata,
+ struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_params *tzp,
+ int passive_delay, int polling_delay)
+{ return ERR_PTR(-ENODEV); }
+
+static inline struct thermal_zone_device *thermal_tripless_zone_device_register(
+ const char *type,
+ void *devdata,
+ struct thermal_zone_device_ops *ops,
+ const struct thermal_zone_params *tzp)
{ return ERR_PTR(-ENODEV); }
-static inline void thermal_zone_device_unregister(
- struct thermal_zone_device *tz)
+
+static inline void thermal_zone_device_unregister(struct thermal_zone_device *tz)
{ }
+
static inline struct thermal_cooling_device *
thermal_cooling_device_register(const char *type, void *devdata,
const struct thermal_cooling_device_ops *ops)
* stores the index into the @id pointer, then stores the entry at
* that index. A concurrent lookup will not see an uninitialised @id.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Takes and releases the xa_lock. May sleep if
* the @gfp flags permit.
* Return: 0 on success, -ENOMEM if memory could not be allocated or
* stores the index into the @id pointer, then stores the entry at
* that index. A concurrent lookup will not see an uninitialised @id.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Takes and releases the xa_lock while
* disabling softirqs. May sleep if the @gfp flags permit.
* Return: 0 on success, -ENOMEM if memory could not be allocated or
* stores the index into the @id pointer, then stores the entry at
* that index. A concurrent lookup will not see an uninitialised @id.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Process context. Takes and releases the xa_lock while
* disabling interrupts. May sleep if the @gfp flags permit.
* Return: 0 on success, -ENOMEM if memory could not be allocated or
* The search for an empty entry will start at @next and will wrap
* around if necessary.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Takes and releases the xa_lock. May sleep if
* the @gfp flags permit.
* Return: 0 if the allocation succeeded without wrapping. 1 if the
* The search for an empty entry will start at @next and will wrap
* around if necessary.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Takes and releases the xa_lock while
* disabling softirqs. May sleep if the @gfp flags permit.
* Return: 0 if the allocation succeeded without wrapping. 1 if the
* The search for an empty entry will start at @next and will wrap
* around if necessary.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Process context. Takes and releases the xa_lock while
* disabling interrupts. May sleep if the @gfp flags permit.
* Return: 0 if the allocation succeeded without wrapping. 1 if the
struct snd_pcm_substream *substream);
int (*process)(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- struct iov_iter *buf, unsigned long bytes);
+ unsigned long bytes);
dma_filter_fn compat_filter_fn;
struct device *dma_dev;
const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];
struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
int (*copy)(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int channel,
- unsigned long pos, struct iov_iter *buf,
+ unsigned long pos, struct iov_iter *iter,
unsigned long bytes);
struct page *(*page)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream);
int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
- struct iov_iter *buf, unsigned long bytes);
+ struct iov_iter *iter, unsigned long bytes);
struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
unsigned long offset);
int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream,
struct io_uring_sqe *sqe;
unsigned int sq_idx;
+ if (ctx->flags & IORING_SETUP_NO_SQARRAY)
+ break;
sq_idx = READ_ONCE(ctx->sq_array[entry & sq_mask]);
if (sq_idx > sq_mask)
continue;
complete(&wq->worker_done);
}
+bool io_wq_worker_stopped(void)
+{
+ struct io_worker *worker = current->worker_private;
+
+ if (WARN_ON_ONCE(!io_wq_current_is_worker()))
+ return true;
+
+ return test_bit(IO_WQ_BIT_EXIT, &worker->wq->state);
+}
+
static void io_worker_cancel_cb(struct io_worker *worker)
{
struct io_wq_acct *acct = io_wq_get_acct(worker);
int io_wq_cpu_affinity(struct io_uring_task *tctx, cpumask_var_t mask);
int io_wq_max_workers(struct io_wq *wq, int *new_count);
+bool io_wq_worker_stopped(void);
static inline bool io_wq_is_hashed(struct io_wq_work *work)
{
struct kmem_cache *req_cachep;
+static int __read_mostly sysctl_io_uring_disabled;
+static int __read_mostly sysctl_io_uring_group = -1;
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table kernel_io_uring_disabled_table[] = {
+ {
+ .procname = "io_uring_disabled",
+ .data = &sysctl_io_uring_disabled,
+ .maxlen = sizeof(sysctl_io_uring_disabled),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_TWO,
+ },
+ {
+ .procname = "io_uring_group",
+ .data = &sysctl_io_uring_group,
+ .maxlen = sizeof(gid_t),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {},
+};
+#endif
+
struct sock *io_uring_get_socket(struct file *file)
{
#if defined(CONFIG_UNIX)
struct io_uring_cqe *cqe = &ctx->completion_cqes[i];
if (!io_fill_cqe_aux(ctx, cqe->user_data, cqe->res, cqe->flags)) {
- if (ctx->task_complete) {
+ if (ctx->lockless_cq) {
spin_lock(&ctx->completion_lock);
io_cqring_event_overflow(ctx, cqe->user_data,
cqe->res, cqe->flags, 0, 0);
if (!(req->flags & REQ_F_CQE_SKIP) &&
unlikely(!io_fill_cqe_req(ctx, req))) {
- if (ctx->task_complete) {
+ if (ctx->lockless_cq) {
spin_lock(&ctx->completion_lock);
io_req_cqe_overflow(req);
spin_unlock(&ctx->completion_lock);
if (!needs_poll) {
if (!(req->ctx->flags & IORING_SETUP_IOPOLL))
break;
+ if (io_wq_worker_stopped())
+ break;
cond_resched();
continue;
}
return io_uring_create(entries, &p, params);
}
+static inline bool io_uring_allowed(void)
+{
+ int disabled = READ_ONCE(sysctl_io_uring_disabled);
+ kgid_t io_uring_group;
+
+ if (disabled == 2)
+ return false;
+
+ if (disabled == 0 || capable(CAP_SYS_ADMIN))
+ return true;
+
+ io_uring_group = make_kgid(&init_user_ns, sysctl_io_uring_group);
+ if (!gid_valid(io_uring_group))
+ return false;
+
+ return in_group_p(io_uring_group);
+}
+
SYSCALL_DEFINE2(io_uring_setup, u32, entries,
struct io_uring_params __user *, params)
{
+ if (!io_uring_allowed())
+ return -EPERM;
+
return io_uring_setup(entries, params);
}
offsetof(struct io_kiocb, cmd.data),
sizeof_field(struct io_kiocb, cmd.data), NULL);
+#ifdef CONFIG_SYSCTL
+ register_sysctl_init("kernel", kernel_io_uring_disabled_table);
+#endif
+
return 0;
};
__initcall(io_uring_init);
if (sqd) {
io_sq_thread_park(sqd);
- ret = io_wq_cpu_affinity(sqd->thread->io_uring, mask);
+ /* Don't set affinity for a dying thread */
+ if (sqd->thread)
+ ret = io_wq_cpu_affinity(sqd->thread->io_uring, mask);
io_sq_thread_unpark(sqd);
}
config DMA_NUMA_CMA
bool "Enable separate DMA Contiguous Memory Area for NUMA Node"
- default NUMA
+ depends on NUMA
help
Enable this option to get numa CMA areas so that NUMA devices
can get local memory by DMA coherent APIs.
return -EBUSY;
}
- if (memblock_is_region_reserved(rmem->base, rmem->size)) {
- pr_info("Reserved memory: overlap with other memblock reserved region\n");
- return -EBUSY;
- }
-
if (!of_get_flat_dt_prop(node, "reusable", NULL) ||
of_get_flat_dt_prop(node, "no-map", NULL))
return -EINVAL;
return entry;
}
-static void __dma_entry_alloc_check_leak(void)
+/*
+ * This should be called outside of free_entries_lock scope to avoid potential
+ * deadlocks with serial consoles that use DMA.
+ */
+static void __dma_entry_alloc_check_leak(u32 nr_entries)
{
- u32 tmp = nr_total_entries % nr_prealloc_entries;
+ u32 tmp = nr_entries % nr_prealloc_entries;
/* Shout each time we tick over some multiple of the initial pool */
if (tmp < DMA_DEBUG_DYNAMIC_ENTRIES) {
pr_info("dma_debug_entry pool grown to %u (%u00%%)\n",
- nr_total_entries,
- (nr_total_entries / nr_prealloc_entries));
+ nr_entries,
+ (nr_entries / nr_prealloc_entries));
}
}
*/
static struct dma_debug_entry *dma_entry_alloc(void)
{
+ bool alloc_check_leak = false;
struct dma_debug_entry *entry;
unsigned long flags;
+ u32 nr_entries;
spin_lock_irqsave(&free_entries_lock, flags);
if (num_free_entries == 0) {
pr_err("debugging out of memory - disabling\n");
return NULL;
}
- __dma_entry_alloc_check_leak();
+ alloc_check_leak = true;
+ nr_entries = nr_total_entries;
}
entry = __dma_entry_alloc();
spin_unlock_irqrestore(&free_entries_lock, flags);
+ if (alloc_check_leak)
+ __dma_entry_alloc_check_leak(nr_entries);
+
#ifdef CONFIG_STACKTRACE
entry->stack_len = stack_trace_save(entry->stack_entries,
ARRAY_SIZE(entry->stack_entries),
remove_mapping:
#ifdef CONFIG_DMA_DIRECT_REMAP
dma_common_free_remap(addr, pool_size);
-#endif
-free_page: __maybe_unused
+free_page:
__free_pages(page, order);
+#endif
out:
return ret;
}
{
return log_buf;
}
-EXPORT_SYMBOL_GPL(log_buf_addr_get);
/* Return log buffer size */
u32 log_buf_len_get(void)
{
return log_buf_len;
}
-EXPORT_SYMBOL_GPL(log_buf_len_get);
/*
* Define how much of the log buffer we could take at maximum. The value
* @end: The maximum ID (exclusive).
* @gfp: Memory allocation flags.
*
- * Allocates an unused ID in the range specified by @nextid and @end. If
+ * Allocates an unused ID in the range specified by @start and @end. If
* @end is <= 0, it is treated as one larger than %INT_MAX. This allows
* callers to use @start + N as @end as long as N is within integer range.
* The search for an unused ID will start at the last ID allocated and will
vpermxor1.o vpermxor2.o vpermxor4.o vpermxor8.o
raid6_pq-$(CONFIG_KERNEL_MODE_NEON) += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
raid6_pq-$(CONFIG_S390) += s390vx8.o recov_s390xc.o
+raid6_pq-$(CONFIG_LOONGARCH) += loongarch_simd.o recov_loongarch_simd.o
hostprogs += mktables
&raid6_neonx2,
&raid6_neonx1,
#endif
+#ifdef CONFIG_LOONGARCH
+#ifdef CONFIG_CPU_HAS_LASX
+ &raid6_lasx,
+#endif
+#ifdef CONFIG_CPU_HAS_LSX
+ &raid6_lsx,
+#endif
+#endif
#if defined(__ia64__)
&raid6_intx32,
&raid6_intx16,
#if defined(CONFIG_KERNEL_MODE_NEON)
&raid6_recov_neon,
#endif
+#ifdef CONFIG_LOONGARCH
+#ifdef CONFIG_CPU_HAS_LASX
+ &raid6_recov_lasx,
+#endif
+#ifdef CONFIG_CPU_HAS_LSX
+ &raid6_recov_lsx,
+#endif
+#endif
&raid6_recov_intx1,
NULL
};
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ *
+ * raid6/loongarch.h
+ *
+ * Definitions common to LoongArch RAID-6 code only
+ */
+
+#ifndef _LIB_RAID6_LOONGARCH_H
+#define _LIB_RAID6_LOONGARCH_H
+
+#ifdef __KERNEL__
+
+#include <asm/cpu-features.h>
+#include <asm/fpu.h>
+
+#else /* for user-space testing */
+
+#include <sys/auxv.h>
+
+/* have to supply these defines for glibc 2.37- and musl */
+#ifndef HWCAP_LOONGARCH_LSX
+#define HWCAP_LOONGARCH_LSX (1 << 4)
+#endif
+#ifndef HWCAP_LOONGARCH_LASX
+#define HWCAP_LOONGARCH_LASX (1 << 5)
+#endif
+
+#define kernel_fpu_begin()
+#define kernel_fpu_end()
+
+#define cpu_has_lsx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LSX)
+#define cpu_has_lasx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LASX)
+
+#endif /* __KERNEL__ */
+
+#endif /* _LIB_RAID6_LOONGARCH_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * RAID6 syndrome calculations in LoongArch SIMD (LSX & LASX)
+ *
+ * Copyright 2023 WANG Xuerui <git@xen0n.name>
+ *
+ * Based on the generic RAID-6 code (int.uc):
+ *
+ * Copyright 2002-2004 H. Peter Anvin
+ */
+
+#include <linux/raid/pq.h>
+#include "loongarch.h"
+
+/*
+ * The vector algorithms are currently priority 0, which means the generic
+ * scalar algorithms are not being disabled if vector support is present.
+ * This is like the similar LoongArch RAID5 XOR code, with the main reason
+ * repeated here: it cannot be ruled out at this point of time, that some
+ * future (maybe reduced) models could run the vector algorithms slower than
+ * the scalar ones, maybe for errata or micro-op reasons. It may be
+ * appropriate to revisit this after one or two more uarch generations.
+ */
+
+#ifdef CONFIG_CPU_HAS_LSX
+#define NSIZE 16
+
+static int raid6_has_lsx(void)
+{
+ return cpu_has_lsx;
+}
+
+static void raid6_lsx_gen_syndrome(int disks, size_t bytes, void **ptrs)
+{
+ u8 **dptr = (u8 **)ptrs;
+ u8 *p, *q;
+ int d, z, z0;
+
+ z0 = disks - 3; /* Highest data disk */
+ p = dptr[z0+1]; /* XOR parity */
+ q = dptr[z0+2]; /* RS syndrome */
+
+ kernel_fpu_begin();
+
+ /*
+ * $vr0, $vr1, $vr2, $vr3: wp
+ * $vr4, $vr5, $vr6, $vr7: wq
+ * $vr8, $vr9, $vr10, $vr11: wd
+ * $vr12, $vr13, $vr14, $vr15: w2
+ * $vr16, $vr17, $vr18, $vr19: w1
+ */
+ for (d = 0; d < bytes; d += NSIZE*4) {
+ /* wq$$ = wp$$ = *(unative_t *)&dptr[z0][d+$$*NSIZE]; */
+ asm volatile("vld $vr0, %0" : : "m"(dptr[z0][d+0*NSIZE]));
+ asm volatile("vld $vr1, %0" : : "m"(dptr[z0][d+1*NSIZE]));
+ asm volatile("vld $vr2, %0" : : "m"(dptr[z0][d+2*NSIZE]));
+ asm volatile("vld $vr3, %0" : : "m"(dptr[z0][d+3*NSIZE]));
+ asm volatile("vori.b $vr4, $vr0, 0");
+ asm volatile("vori.b $vr5, $vr1, 0");
+ asm volatile("vori.b $vr6, $vr2, 0");
+ asm volatile("vori.b $vr7, $vr3, 0");
+ for (z = z0-1; z >= 0; z--) {
+ /* wd$$ = *(unative_t *)&dptr[z][d+$$*NSIZE]; */
+ asm volatile("vld $vr8, %0" : : "m"(dptr[z][d+0*NSIZE]));
+ asm volatile("vld $vr9, %0" : : "m"(dptr[z][d+1*NSIZE]));
+ asm volatile("vld $vr10, %0" : : "m"(dptr[z][d+2*NSIZE]));
+ asm volatile("vld $vr11, %0" : : "m"(dptr[z][d+3*NSIZE]));
+ /* wp$$ ^= wd$$; */
+ asm volatile("vxor.v $vr0, $vr0, $vr8");
+ asm volatile("vxor.v $vr1, $vr1, $vr9");
+ asm volatile("vxor.v $vr2, $vr2, $vr10");
+ asm volatile("vxor.v $vr3, $vr3, $vr11");
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("vslti.b $vr12, $vr4, 0");
+ asm volatile("vslti.b $vr13, $vr5, 0");
+ asm volatile("vslti.b $vr14, $vr6, 0");
+ asm volatile("vslti.b $vr15, $vr7, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("vslli.b $vr16, $vr4, 1");
+ asm volatile("vslli.b $vr17, $vr5, 1");
+ asm volatile("vslli.b $vr18, $vr6, 1");
+ asm volatile("vslli.b $vr19, $vr7, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("vandi.b $vr12, $vr12, 0x1d");
+ asm volatile("vandi.b $vr13, $vr13, 0x1d");
+ asm volatile("vandi.b $vr14, $vr14, 0x1d");
+ asm volatile("vandi.b $vr15, $vr15, 0x1d");
+ /* w1$$ ^= w2$$; */
+ asm volatile("vxor.v $vr16, $vr16, $vr12");
+ asm volatile("vxor.v $vr17, $vr17, $vr13");
+ asm volatile("vxor.v $vr18, $vr18, $vr14");
+ asm volatile("vxor.v $vr19, $vr19, $vr15");
+ /* wq$$ = w1$$ ^ wd$$; */
+ asm volatile("vxor.v $vr4, $vr16, $vr8");
+ asm volatile("vxor.v $vr5, $vr17, $vr9");
+ asm volatile("vxor.v $vr6, $vr18, $vr10");
+ asm volatile("vxor.v $vr7, $vr19, $vr11");
+ }
+ /* *(unative_t *)&p[d+NSIZE*$$] = wp$$; */
+ asm volatile("vst $vr0, %0" : "=m"(p[d+NSIZE*0]));
+ asm volatile("vst $vr1, %0" : "=m"(p[d+NSIZE*1]));
+ asm volatile("vst $vr2, %0" : "=m"(p[d+NSIZE*2]));
+ asm volatile("vst $vr3, %0" : "=m"(p[d+NSIZE*3]));
+ /* *(unative_t *)&q[d+NSIZE*$$] = wq$$; */
+ asm volatile("vst $vr4, %0" : "=m"(q[d+NSIZE*0]));
+ asm volatile("vst $vr5, %0" : "=m"(q[d+NSIZE*1]));
+ asm volatile("vst $vr6, %0" : "=m"(q[d+NSIZE*2]));
+ asm volatile("vst $vr7, %0" : "=m"(q[d+NSIZE*3]));
+ }
+
+ kernel_fpu_end();
+}
+
+static void raid6_lsx_xor_syndrome(int disks, int start, int stop,
+ size_t bytes, void **ptrs)
+{
+ u8 **dptr = (u8 **)ptrs;
+ u8 *p, *q;
+ int d, z, z0;
+
+ z0 = stop; /* P/Q right side optimization */
+ p = dptr[disks-2]; /* XOR parity */
+ q = dptr[disks-1]; /* RS syndrome */
+
+ kernel_fpu_begin();
+
+ /*
+ * $vr0, $vr1, $vr2, $vr3: wp
+ * $vr4, $vr5, $vr6, $vr7: wq
+ * $vr8, $vr9, $vr10, $vr11: wd
+ * $vr12, $vr13, $vr14, $vr15: w2
+ * $vr16, $vr17, $vr18, $vr19: w1
+ */
+ for (d = 0; d < bytes; d += NSIZE*4) {
+ /* P/Q data pages */
+ /* wq$$ = wp$$ = *(unative_t *)&dptr[z0][d+$$*NSIZE]; */
+ asm volatile("vld $vr0, %0" : : "m"(dptr[z0][d+0*NSIZE]));
+ asm volatile("vld $vr1, %0" : : "m"(dptr[z0][d+1*NSIZE]));
+ asm volatile("vld $vr2, %0" : : "m"(dptr[z0][d+2*NSIZE]));
+ asm volatile("vld $vr3, %0" : : "m"(dptr[z0][d+3*NSIZE]));
+ asm volatile("vori.b $vr4, $vr0, 0");
+ asm volatile("vori.b $vr5, $vr1, 0");
+ asm volatile("vori.b $vr6, $vr2, 0");
+ asm volatile("vori.b $vr7, $vr3, 0");
+ for (z = z0-1; z >= start; z--) {
+ /* wd$$ = *(unative_t *)&dptr[z][d+$$*NSIZE]; */
+ asm volatile("vld $vr8, %0" : : "m"(dptr[z][d+0*NSIZE]));
+ asm volatile("vld $vr9, %0" : : "m"(dptr[z][d+1*NSIZE]));
+ asm volatile("vld $vr10, %0" : : "m"(dptr[z][d+2*NSIZE]));
+ asm volatile("vld $vr11, %0" : : "m"(dptr[z][d+3*NSIZE]));
+ /* wp$$ ^= wd$$; */
+ asm volatile("vxor.v $vr0, $vr0, $vr8");
+ asm volatile("vxor.v $vr1, $vr1, $vr9");
+ asm volatile("vxor.v $vr2, $vr2, $vr10");
+ asm volatile("vxor.v $vr3, $vr3, $vr11");
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("vslti.b $vr12, $vr4, 0");
+ asm volatile("vslti.b $vr13, $vr5, 0");
+ asm volatile("vslti.b $vr14, $vr6, 0");
+ asm volatile("vslti.b $vr15, $vr7, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("vslli.b $vr16, $vr4, 1");
+ asm volatile("vslli.b $vr17, $vr5, 1");
+ asm volatile("vslli.b $vr18, $vr6, 1");
+ asm volatile("vslli.b $vr19, $vr7, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("vandi.b $vr12, $vr12, 0x1d");
+ asm volatile("vandi.b $vr13, $vr13, 0x1d");
+ asm volatile("vandi.b $vr14, $vr14, 0x1d");
+ asm volatile("vandi.b $vr15, $vr15, 0x1d");
+ /* w1$$ ^= w2$$; */
+ asm volatile("vxor.v $vr16, $vr16, $vr12");
+ asm volatile("vxor.v $vr17, $vr17, $vr13");
+ asm volatile("vxor.v $vr18, $vr18, $vr14");
+ asm volatile("vxor.v $vr19, $vr19, $vr15");
+ /* wq$$ = w1$$ ^ wd$$; */
+ asm volatile("vxor.v $vr4, $vr16, $vr8");
+ asm volatile("vxor.v $vr5, $vr17, $vr9");
+ asm volatile("vxor.v $vr6, $vr18, $vr10");
+ asm volatile("vxor.v $vr7, $vr19, $vr11");
+ }
+
+ /* P/Q left side optimization */
+ for (z = start-1; z >= 0; z--) {
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("vslti.b $vr12, $vr4, 0");
+ asm volatile("vslti.b $vr13, $vr5, 0");
+ asm volatile("vslti.b $vr14, $vr6, 0");
+ asm volatile("vslti.b $vr15, $vr7, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("vslli.b $vr16, $vr4, 1");
+ asm volatile("vslli.b $vr17, $vr5, 1");
+ asm volatile("vslli.b $vr18, $vr6, 1");
+ asm volatile("vslli.b $vr19, $vr7, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("vandi.b $vr12, $vr12, 0x1d");
+ asm volatile("vandi.b $vr13, $vr13, 0x1d");
+ asm volatile("vandi.b $vr14, $vr14, 0x1d");
+ asm volatile("vandi.b $vr15, $vr15, 0x1d");
+ /* wq$$ = w1$$ ^ w2$$; */
+ asm volatile("vxor.v $vr4, $vr16, $vr12");
+ asm volatile("vxor.v $vr5, $vr17, $vr13");
+ asm volatile("vxor.v $vr6, $vr18, $vr14");
+ asm volatile("vxor.v $vr7, $vr19, $vr15");
+ }
+ /*
+ * *(unative_t *)&p[d+NSIZE*$$] ^= wp$$;
+ * *(unative_t *)&q[d+NSIZE*$$] ^= wq$$;
+ */
+ asm volatile(
+ "vld $vr20, %0\n\t"
+ "vld $vr21, %1\n\t"
+ "vld $vr22, %2\n\t"
+ "vld $vr23, %3\n\t"
+ "vld $vr24, %4\n\t"
+ "vld $vr25, %5\n\t"
+ "vld $vr26, %6\n\t"
+ "vld $vr27, %7\n\t"
+ "vxor.v $vr20, $vr20, $vr0\n\t"
+ "vxor.v $vr21, $vr21, $vr1\n\t"
+ "vxor.v $vr22, $vr22, $vr2\n\t"
+ "vxor.v $vr23, $vr23, $vr3\n\t"
+ "vxor.v $vr24, $vr24, $vr4\n\t"
+ "vxor.v $vr25, $vr25, $vr5\n\t"
+ "vxor.v $vr26, $vr26, $vr6\n\t"
+ "vxor.v $vr27, $vr27, $vr7\n\t"
+ "vst $vr20, %0\n\t"
+ "vst $vr21, %1\n\t"
+ "vst $vr22, %2\n\t"
+ "vst $vr23, %3\n\t"
+ "vst $vr24, %4\n\t"
+ "vst $vr25, %5\n\t"
+ "vst $vr26, %6\n\t"
+ "vst $vr27, %7\n\t"
+ : "+m"(p[d+NSIZE*0]), "+m"(p[d+NSIZE*1]),
+ "+m"(p[d+NSIZE*2]), "+m"(p[d+NSIZE*3]),
+ "+m"(q[d+NSIZE*0]), "+m"(q[d+NSIZE*1]),
+ "+m"(q[d+NSIZE*2]), "+m"(q[d+NSIZE*3])
+ );
+ }
+
+ kernel_fpu_end();
+}
+
+const struct raid6_calls raid6_lsx = {
+ raid6_lsx_gen_syndrome,
+ raid6_lsx_xor_syndrome,
+ raid6_has_lsx,
+ "lsx",
+ .priority = 0 /* see the comment near the top of the file for reason */
+};
+
+#undef NSIZE
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+#define NSIZE 32
+
+static int raid6_has_lasx(void)
+{
+ return cpu_has_lasx;
+}
+
+static void raid6_lasx_gen_syndrome(int disks, size_t bytes, void **ptrs)
+{
+ u8 **dptr = (u8 **)ptrs;
+ u8 *p, *q;
+ int d, z, z0;
+
+ z0 = disks - 3; /* Highest data disk */
+ p = dptr[z0+1]; /* XOR parity */
+ q = dptr[z0+2]; /* RS syndrome */
+
+ kernel_fpu_begin();
+
+ /*
+ * $xr0, $xr1: wp
+ * $xr2, $xr3: wq
+ * $xr4, $xr5: wd
+ * $xr6, $xr7: w2
+ * $xr8, $xr9: w1
+ */
+ for (d = 0; d < bytes; d += NSIZE*2) {
+ /* wq$$ = wp$$ = *(unative_t *)&dptr[z0][d+$$*NSIZE]; */
+ asm volatile("xvld $xr0, %0" : : "m"(dptr[z0][d+0*NSIZE]));
+ asm volatile("xvld $xr1, %0" : : "m"(dptr[z0][d+1*NSIZE]));
+ asm volatile("xvori.b $xr2, $xr0, 0");
+ asm volatile("xvori.b $xr3, $xr1, 0");
+ for (z = z0-1; z >= 0; z--) {
+ /* wd$$ = *(unative_t *)&dptr[z][d+$$*NSIZE]; */
+ asm volatile("xvld $xr4, %0" : : "m"(dptr[z][d+0*NSIZE]));
+ asm volatile("xvld $xr5, %0" : : "m"(dptr[z][d+1*NSIZE]));
+ /* wp$$ ^= wd$$; */
+ asm volatile("xvxor.v $xr0, $xr0, $xr4");
+ asm volatile("xvxor.v $xr1, $xr1, $xr5");
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("xvslti.b $xr6, $xr2, 0");
+ asm volatile("xvslti.b $xr7, $xr3, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("xvslli.b $xr8, $xr2, 1");
+ asm volatile("xvslli.b $xr9, $xr3, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("xvandi.b $xr6, $xr6, 0x1d");
+ asm volatile("xvandi.b $xr7, $xr7, 0x1d");
+ /* w1$$ ^= w2$$; */
+ asm volatile("xvxor.v $xr8, $xr8, $xr6");
+ asm volatile("xvxor.v $xr9, $xr9, $xr7");
+ /* wq$$ = w1$$ ^ wd$$; */
+ asm volatile("xvxor.v $xr2, $xr8, $xr4");
+ asm volatile("xvxor.v $xr3, $xr9, $xr5");
+ }
+ /* *(unative_t *)&p[d+NSIZE*$$] = wp$$; */
+ asm volatile("xvst $xr0, %0" : "=m"(p[d+NSIZE*0]));
+ asm volatile("xvst $xr1, %0" : "=m"(p[d+NSIZE*1]));
+ /* *(unative_t *)&q[d+NSIZE*$$] = wq$$; */
+ asm volatile("xvst $xr2, %0" : "=m"(q[d+NSIZE*0]));
+ asm volatile("xvst $xr3, %0" : "=m"(q[d+NSIZE*1]));
+ }
+
+ kernel_fpu_end();
+}
+
+static void raid6_lasx_xor_syndrome(int disks, int start, int stop,
+ size_t bytes, void **ptrs)
+{
+ u8 **dptr = (u8 **)ptrs;
+ u8 *p, *q;
+ int d, z, z0;
+
+ z0 = stop; /* P/Q right side optimization */
+ p = dptr[disks-2]; /* XOR parity */
+ q = dptr[disks-1]; /* RS syndrome */
+
+ kernel_fpu_begin();
+
+ /*
+ * $xr0, $xr1: wp
+ * $xr2, $xr3: wq
+ * $xr4, $xr5: wd
+ * $xr6, $xr7: w2
+ * $xr8, $xr9: w1
+ */
+ for (d = 0; d < bytes; d += NSIZE*2) {
+ /* P/Q data pages */
+ /* wq$$ = wp$$ = *(unative_t *)&dptr[z0][d+$$*NSIZE]; */
+ asm volatile("xvld $xr0, %0" : : "m"(dptr[z0][d+0*NSIZE]));
+ asm volatile("xvld $xr1, %0" : : "m"(dptr[z0][d+1*NSIZE]));
+ asm volatile("xvori.b $xr2, $xr0, 0");
+ asm volatile("xvori.b $xr3, $xr1, 0");
+ for (z = z0-1; z >= start; z--) {
+ /* wd$$ = *(unative_t *)&dptr[z][d+$$*NSIZE]; */
+ asm volatile("xvld $xr4, %0" : : "m"(dptr[z][d+0*NSIZE]));
+ asm volatile("xvld $xr5, %0" : : "m"(dptr[z][d+1*NSIZE]));
+ /* wp$$ ^= wd$$; */
+ asm volatile("xvxor.v $xr0, $xr0, $xr4");
+ asm volatile("xvxor.v $xr1, $xr1, $xr5");
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("xvslti.b $xr6, $xr2, 0");
+ asm volatile("xvslti.b $xr7, $xr3, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("xvslli.b $xr8, $xr2, 1");
+ asm volatile("xvslli.b $xr9, $xr3, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("xvandi.b $xr6, $xr6, 0x1d");
+ asm volatile("xvandi.b $xr7, $xr7, 0x1d");
+ /* w1$$ ^= w2$$; */
+ asm volatile("xvxor.v $xr8, $xr8, $xr6");
+ asm volatile("xvxor.v $xr9, $xr9, $xr7");
+ /* wq$$ = w1$$ ^ wd$$; */
+ asm volatile("xvxor.v $xr2, $xr8, $xr4");
+ asm volatile("xvxor.v $xr3, $xr9, $xr5");
+ }
+
+ /* P/Q left side optimization */
+ for (z = start-1; z >= 0; z--) {
+ /* w2$$ = MASK(wq$$); */
+ asm volatile("xvslti.b $xr6, $xr2, 0");
+ asm volatile("xvslti.b $xr7, $xr3, 0");
+ /* w1$$ = SHLBYTE(wq$$); */
+ asm volatile("xvslli.b $xr8, $xr2, 1");
+ asm volatile("xvslli.b $xr9, $xr3, 1");
+ /* w2$$ &= NBYTES(0x1d); */
+ asm volatile("xvandi.b $xr6, $xr6, 0x1d");
+ asm volatile("xvandi.b $xr7, $xr7, 0x1d");
+ /* wq$$ = w1$$ ^ w2$$; */
+ asm volatile("xvxor.v $xr2, $xr8, $xr6");
+ asm volatile("xvxor.v $xr3, $xr9, $xr7");
+ }
+ /*
+ * *(unative_t *)&p[d+NSIZE*$$] ^= wp$$;
+ * *(unative_t *)&q[d+NSIZE*$$] ^= wq$$;
+ */
+ asm volatile(
+ "xvld $xr10, %0\n\t"
+ "xvld $xr11, %1\n\t"
+ "xvld $xr12, %2\n\t"
+ "xvld $xr13, %3\n\t"
+ "xvxor.v $xr10, $xr10, $xr0\n\t"
+ "xvxor.v $xr11, $xr11, $xr1\n\t"
+ "xvxor.v $xr12, $xr12, $xr2\n\t"
+ "xvxor.v $xr13, $xr13, $xr3\n\t"
+ "xvst $xr10, %0\n\t"
+ "xvst $xr11, %1\n\t"
+ "xvst $xr12, %2\n\t"
+ "xvst $xr13, %3\n\t"
+ : "+m"(p[d+NSIZE*0]), "+m"(p[d+NSIZE*1]),
+ "+m"(q[d+NSIZE*0]), "+m"(q[d+NSIZE*1])
+ );
+ }
+
+ kernel_fpu_end();
+}
+
+const struct raid6_calls raid6_lasx = {
+ raid6_lasx_gen_syndrome,
+ raid6_lasx_xor_syndrome,
+ raid6_has_lasx,
+ "lasx",
+ .priority = 0 /* see the comment near the top of the file for reason */
+};
+#undef NSIZE
+#endif /* CONFIG_CPU_HAS_LASX */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * RAID6 recovery algorithms in LoongArch SIMD (LSX & LASX)
+ *
+ * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
+ *
+ * Originally based on recov_avx2.c and recov_ssse3.c:
+ *
+ * Copyright (C) 2012 Intel Corporation
+ * Author: Jim Kukunas <james.t.kukunas@linux.intel.com>
+ */
+
+#include <linux/raid/pq.h>
+#include "loongarch.h"
+
+/*
+ * Unlike with the syndrome calculation algorithms, there's no boot-time
+ * selection of recovery algorithms by benchmarking, so we have to specify
+ * the priorities and hope the future cores will all have decent vector
+ * support (i.e. no LASX slower than LSX, or even scalar code).
+ */
+
+#ifdef CONFIG_CPU_HAS_LSX
+static int raid6_has_lsx(void)
+{
+ return cpu_has_lsx;
+}
+
+static void raid6_2data_recov_lsx(int disks, size_t bytes, int faila,
+ int failb, void **ptrs)
+{
+ u8 *p, *q, *dp, *dq;
+ const u8 *pbmul; /* P multiplier table for B data */
+ const u8 *qmul; /* Q multiplier table (for both) */
+
+ p = (u8 *)ptrs[disks - 2];
+ q = (u8 *)ptrs[disks - 1];
+
+ /*
+ * Compute syndrome with zero for the missing data pages
+ * Use the dead data pages as temporary storage for
+ * delta p and delta q
+ */
+ dp = (u8 *)ptrs[faila];
+ ptrs[faila] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 2] = dp;
+ dq = (u8 *)ptrs[failb];
+ ptrs[failb] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 1] = dq;
+
+ raid6_call.gen_syndrome(disks, bytes, ptrs);
+
+ /* Restore pointer table */
+ ptrs[faila] = dp;
+ ptrs[failb] = dq;
+ ptrs[disks - 2] = p;
+ ptrs[disks - 1] = q;
+
+ /* Now, pick the proper data tables */
+ pbmul = raid6_vgfmul[raid6_gfexi[failb - faila]];
+ qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila] ^ raid6_gfexp[failb]]];
+
+ kernel_fpu_begin();
+
+ /*
+ * vr20, vr21: qmul
+ * vr22, vr23: pbmul
+ */
+ asm volatile("vld $vr20, %0" : : "m" (qmul[0]));
+ asm volatile("vld $vr21, %0" : : "m" (qmul[16]));
+ asm volatile("vld $vr22, %0" : : "m" (pbmul[0]));
+ asm volatile("vld $vr23, %0" : : "m" (pbmul[16]));
+
+ while (bytes) {
+ /* vr4 - vr7: Q */
+ asm volatile("vld $vr4, %0" : : "m" (q[0]));
+ asm volatile("vld $vr5, %0" : : "m" (q[16]));
+ asm volatile("vld $vr6, %0" : : "m" (q[32]));
+ asm volatile("vld $vr7, %0" : : "m" (q[48]));
+ /* vr4 - vr7: Q + Qxy */
+ asm volatile("vld $vr8, %0" : : "m" (dq[0]));
+ asm volatile("vld $vr9, %0" : : "m" (dq[16]));
+ asm volatile("vld $vr10, %0" : : "m" (dq[32]));
+ asm volatile("vld $vr11, %0" : : "m" (dq[48]));
+ asm volatile("vxor.v $vr4, $vr4, $vr8");
+ asm volatile("vxor.v $vr5, $vr5, $vr9");
+ asm volatile("vxor.v $vr6, $vr6, $vr10");
+ asm volatile("vxor.v $vr7, $vr7, $vr11");
+ /* vr0 - vr3: P */
+ asm volatile("vld $vr0, %0" : : "m" (p[0]));
+ asm volatile("vld $vr1, %0" : : "m" (p[16]));
+ asm volatile("vld $vr2, %0" : : "m" (p[32]));
+ asm volatile("vld $vr3, %0" : : "m" (p[48]));
+ /* vr0 - vr3: P + Pxy */
+ asm volatile("vld $vr8, %0" : : "m" (dp[0]));
+ asm volatile("vld $vr9, %0" : : "m" (dp[16]));
+ asm volatile("vld $vr10, %0" : : "m" (dp[32]));
+ asm volatile("vld $vr11, %0" : : "m" (dp[48]));
+ asm volatile("vxor.v $vr0, $vr0, $vr8");
+ asm volatile("vxor.v $vr1, $vr1, $vr9");
+ asm volatile("vxor.v $vr2, $vr2, $vr10");
+ asm volatile("vxor.v $vr3, $vr3, $vr11");
+
+ /* vr8 - vr11: higher 4 bits of each byte of (Q + Qxy) */
+ asm volatile("vsrli.b $vr8, $vr4, 4");
+ asm volatile("vsrli.b $vr9, $vr5, 4");
+ asm volatile("vsrli.b $vr10, $vr6, 4");
+ asm volatile("vsrli.b $vr11, $vr7, 4");
+ /* vr4 - vr7: lower 4 bits of each byte of (Q + Qxy) */
+ asm volatile("vandi.b $vr4, $vr4, 0x0f");
+ asm volatile("vandi.b $vr5, $vr5, 0x0f");
+ asm volatile("vandi.b $vr6, $vr6, 0x0f");
+ asm volatile("vandi.b $vr7, $vr7, 0x0f");
+ /* lookup from qmul[0] */
+ asm volatile("vshuf.b $vr4, $vr20, $vr20, $vr4");
+ asm volatile("vshuf.b $vr5, $vr20, $vr20, $vr5");
+ asm volatile("vshuf.b $vr6, $vr20, $vr20, $vr6");
+ asm volatile("vshuf.b $vr7, $vr20, $vr20, $vr7");
+ /* lookup from qmul[16] */
+ asm volatile("vshuf.b $vr8, $vr21, $vr21, $vr8");
+ asm volatile("vshuf.b $vr9, $vr21, $vr21, $vr9");
+ asm volatile("vshuf.b $vr10, $vr21, $vr21, $vr10");
+ asm volatile("vshuf.b $vr11, $vr21, $vr21, $vr11");
+ /* vr16 - vr19: B(Q + Qxy) */
+ asm volatile("vxor.v $vr16, $vr8, $vr4");
+ asm volatile("vxor.v $vr17, $vr9, $vr5");
+ asm volatile("vxor.v $vr18, $vr10, $vr6");
+ asm volatile("vxor.v $vr19, $vr11, $vr7");
+
+ /* vr4 - vr7: higher 4 bits of each byte of (P + Pxy) */
+ asm volatile("vsrli.b $vr4, $vr0, 4");
+ asm volatile("vsrli.b $vr5, $vr1, 4");
+ asm volatile("vsrli.b $vr6, $vr2, 4");
+ asm volatile("vsrli.b $vr7, $vr3, 4");
+ /* vr12 - vr15: lower 4 bits of each byte of (P + Pxy) */
+ asm volatile("vandi.b $vr12, $vr0, 0x0f");
+ asm volatile("vandi.b $vr13, $vr1, 0x0f");
+ asm volatile("vandi.b $vr14, $vr2, 0x0f");
+ asm volatile("vandi.b $vr15, $vr3, 0x0f");
+ /* lookup from pbmul[0] */
+ asm volatile("vshuf.b $vr12, $vr22, $vr22, $vr12");
+ asm volatile("vshuf.b $vr13, $vr22, $vr22, $vr13");
+ asm volatile("vshuf.b $vr14, $vr22, $vr22, $vr14");
+ asm volatile("vshuf.b $vr15, $vr22, $vr22, $vr15");
+ /* lookup from pbmul[16] */
+ asm volatile("vshuf.b $vr4, $vr23, $vr23, $vr4");
+ asm volatile("vshuf.b $vr5, $vr23, $vr23, $vr5");
+ asm volatile("vshuf.b $vr6, $vr23, $vr23, $vr6");
+ asm volatile("vshuf.b $vr7, $vr23, $vr23, $vr7");
+ /* vr4 - vr7: A(P + Pxy) */
+ asm volatile("vxor.v $vr4, $vr4, $vr12");
+ asm volatile("vxor.v $vr5, $vr5, $vr13");
+ asm volatile("vxor.v $vr6, $vr6, $vr14");
+ asm volatile("vxor.v $vr7, $vr7, $vr15");
+
+ /* vr4 - vr7: A(P + Pxy) + B(Q + Qxy) = Dx */
+ asm volatile("vxor.v $vr4, $vr4, $vr16");
+ asm volatile("vxor.v $vr5, $vr5, $vr17");
+ asm volatile("vxor.v $vr6, $vr6, $vr18");
+ asm volatile("vxor.v $vr7, $vr7, $vr19");
+ asm volatile("vst $vr4, %0" : "=m" (dq[0]));
+ asm volatile("vst $vr5, %0" : "=m" (dq[16]));
+ asm volatile("vst $vr6, %0" : "=m" (dq[32]));
+ asm volatile("vst $vr7, %0" : "=m" (dq[48]));
+
+ /* vr0 - vr3: P + Pxy + Dx = Dy */
+ asm volatile("vxor.v $vr0, $vr0, $vr4");
+ asm volatile("vxor.v $vr1, $vr1, $vr5");
+ asm volatile("vxor.v $vr2, $vr2, $vr6");
+ asm volatile("vxor.v $vr3, $vr3, $vr7");
+ asm volatile("vst $vr0, %0" : "=m" (dp[0]));
+ asm volatile("vst $vr1, %0" : "=m" (dp[16]));
+ asm volatile("vst $vr2, %0" : "=m" (dp[32]));
+ asm volatile("vst $vr3, %0" : "=m" (dp[48]));
+
+ bytes -= 64;
+ p += 64;
+ q += 64;
+ dp += 64;
+ dq += 64;
+ }
+
+ kernel_fpu_end();
+}
+
+static void raid6_datap_recov_lsx(int disks, size_t bytes, int faila,
+ void **ptrs)
+{
+ u8 *p, *q, *dq;
+ const u8 *qmul; /* Q multiplier table */
+
+ p = (u8 *)ptrs[disks - 2];
+ q = (u8 *)ptrs[disks - 1];
+
+ /*
+ * Compute syndrome with zero for the missing data page
+ * Use the dead data page as temporary storage for delta q
+ */
+ dq = (u8 *)ptrs[faila];
+ ptrs[faila] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 1] = dq;
+
+ raid6_call.gen_syndrome(disks, bytes, ptrs);
+
+ /* Restore pointer table */
+ ptrs[faila] = dq;
+ ptrs[disks - 1] = q;
+
+ /* Now, pick the proper data tables */
+ qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila]]];
+
+ kernel_fpu_begin();
+
+ /* vr22, vr23: qmul */
+ asm volatile("vld $vr22, %0" : : "m" (qmul[0]));
+ asm volatile("vld $vr23, %0" : : "m" (qmul[16]));
+
+ while (bytes) {
+ /* vr0 - vr3: P + Dx */
+ asm volatile("vld $vr0, %0" : : "m" (p[0]));
+ asm volatile("vld $vr1, %0" : : "m" (p[16]));
+ asm volatile("vld $vr2, %0" : : "m" (p[32]));
+ asm volatile("vld $vr3, %0" : : "m" (p[48]));
+ /* vr4 - vr7: Qx */
+ asm volatile("vld $vr4, %0" : : "m" (dq[0]));
+ asm volatile("vld $vr5, %0" : : "m" (dq[16]));
+ asm volatile("vld $vr6, %0" : : "m" (dq[32]));
+ asm volatile("vld $vr7, %0" : : "m" (dq[48]));
+ /* vr4 - vr7: Q + Qx */
+ asm volatile("vld $vr8, %0" : : "m" (q[0]));
+ asm volatile("vld $vr9, %0" : : "m" (q[16]));
+ asm volatile("vld $vr10, %0" : : "m" (q[32]));
+ asm volatile("vld $vr11, %0" : : "m" (q[48]));
+ asm volatile("vxor.v $vr4, $vr4, $vr8");
+ asm volatile("vxor.v $vr5, $vr5, $vr9");
+ asm volatile("vxor.v $vr6, $vr6, $vr10");
+ asm volatile("vxor.v $vr7, $vr7, $vr11");
+
+ /* vr8 - vr11: higher 4 bits of each byte of (Q + Qx) */
+ asm volatile("vsrli.b $vr8, $vr4, 4");
+ asm volatile("vsrli.b $vr9, $vr5, 4");
+ asm volatile("vsrli.b $vr10, $vr6, 4");
+ asm volatile("vsrli.b $vr11, $vr7, 4");
+ /* vr4 - vr7: lower 4 bits of each byte of (Q + Qx) */
+ asm volatile("vandi.b $vr4, $vr4, 0x0f");
+ asm volatile("vandi.b $vr5, $vr5, 0x0f");
+ asm volatile("vandi.b $vr6, $vr6, 0x0f");
+ asm volatile("vandi.b $vr7, $vr7, 0x0f");
+ /* lookup from qmul[0] */
+ asm volatile("vshuf.b $vr4, $vr22, $vr22, $vr4");
+ asm volatile("vshuf.b $vr5, $vr22, $vr22, $vr5");
+ asm volatile("vshuf.b $vr6, $vr22, $vr22, $vr6");
+ asm volatile("vshuf.b $vr7, $vr22, $vr22, $vr7");
+ /* lookup from qmul[16] */
+ asm volatile("vshuf.b $vr8, $vr23, $vr23, $vr8");
+ asm volatile("vshuf.b $vr9, $vr23, $vr23, $vr9");
+ asm volatile("vshuf.b $vr10, $vr23, $vr23, $vr10");
+ asm volatile("vshuf.b $vr11, $vr23, $vr23, $vr11");
+ /* vr4 - vr7: qmul(Q + Qx) = Dx */
+ asm volatile("vxor.v $vr4, $vr4, $vr8");
+ asm volatile("vxor.v $vr5, $vr5, $vr9");
+ asm volatile("vxor.v $vr6, $vr6, $vr10");
+ asm volatile("vxor.v $vr7, $vr7, $vr11");
+ asm volatile("vst $vr4, %0" : "=m" (dq[0]));
+ asm volatile("vst $vr5, %0" : "=m" (dq[16]));
+ asm volatile("vst $vr6, %0" : "=m" (dq[32]));
+ asm volatile("vst $vr7, %0" : "=m" (dq[48]));
+
+ /* vr0 - vr3: P + Dx + Dx = P */
+ asm volatile("vxor.v $vr0, $vr0, $vr4");
+ asm volatile("vxor.v $vr1, $vr1, $vr5");
+ asm volatile("vxor.v $vr2, $vr2, $vr6");
+ asm volatile("vxor.v $vr3, $vr3, $vr7");
+ asm volatile("vst $vr0, %0" : "=m" (p[0]));
+ asm volatile("vst $vr1, %0" : "=m" (p[16]));
+ asm volatile("vst $vr2, %0" : "=m" (p[32]));
+ asm volatile("vst $vr3, %0" : "=m" (p[48]));
+
+ bytes -= 64;
+ p += 64;
+ q += 64;
+ dq += 64;
+ }
+
+ kernel_fpu_end();
+}
+
+const struct raid6_recov_calls raid6_recov_lsx = {
+ .data2 = raid6_2data_recov_lsx,
+ .datap = raid6_datap_recov_lsx,
+ .valid = raid6_has_lsx,
+ .name = "lsx",
+ .priority = 1,
+};
+#endif /* CONFIG_CPU_HAS_LSX */
+
+#ifdef CONFIG_CPU_HAS_LASX
+static int raid6_has_lasx(void)
+{
+ return cpu_has_lasx;
+}
+
+static void raid6_2data_recov_lasx(int disks, size_t bytes, int faila,
+ int failb, void **ptrs)
+{
+ u8 *p, *q, *dp, *dq;
+ const u8 *pbmul; /* P multiplier table for B data */
+ const u8 *qmul; /* Q multiplier table (for both) */
+
+ p = (u8 *)ptrs[disks - 2];
+ q = (u8 *)ptrs[disks - 1];
+
+ /*
+ * Compute syndrome with zero for the missing data pages
+ * Use the dead data pages as temporary storage for
+ * delta p and delta q
+ */
+ dp = (u8 *)ptrs[faila];
+ ptrs[faila] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 2] = dp;
+ dq = (u8 *)ptrs[failb];
+ ptrs[failb] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 1] = dq;
+
+ raid6_call.gen_syndrome(disks, bytes, ptrs);
+
+ /* Restore pointer table */
+ ptrs[faila] = dp;
+ ptrs[failb] = dq;
+ ptrs[disks - 2] = p;
+ ptrs[disks - 1] = q;
+
+ /* Now, pick the proper data tables */
+ pbmul = raid6_vgfmul[raid6_gfexi[failb - faila]];
+ qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila] ^ raid6_gfexp[failb]]];
+
+ kernel_fpu_begin();
+
+ /*
+ * xr20, xr21: qmul
+ * xr22, xr23: pbmul
+ */
+ asm volatile("vld $vr20, %0" : : "m" (qmul[0]));
+ asm volatile("vld $vr21, %0" : : "m" (qmul[16]));
+ asm volatile("vld $vr22, %0" : : "m" (pbmul[0]));
+ asm volatile("vld $vr23, %0" : : "m" (pbmul[16]));
+ asm volatile("xvreplve0.q $xr20, $xr20");
+ asm volatile("xvreplve0.q $xr21, $xr21");
+ asm volatile("xvreplve0.q $xr22, $xr22");
+ asm volatile("xvreplve0.q $xr23, $xr23");
+
+ while (bytes) {
+ /* xr0, xr1: Q */
+ asm volatile("xvld $xr0, %0" : : "m" (q[0]));
+ asm volatile("xvld $xr1, %0" : : "m" (q[32]));
+ /* xr0, xr1: Q + Qxy */
+ asm volatile("xvld $xr4, %0" : : "m" (dq[0]));
+ asm volatile("xvld $xr5, %0" : : "m" (dq[32]));
+ asm volatile("xvxor.v $xr0, $xr0, $xr4");
+ asm volatile("xvxor.v $xr1, $xr1, $xr5");
+ /* xr2, xr3: P */
+ asm volatile("xvld $xr2, %0" : : "m" (p[0]));
+ asm volatile("xvld $xr3, %0" : : "m" (p[32]));
+ /* xr2, xr3: P + Pxy */
+ asm volatile("xvld $xr4, %0" : : "m" (dp[0]));
+ asm volatile("xvld $xr5, %0" : : "m" (dp[32]));
+ asm volatile("xvxor.v $xr2, $xr2, $xr4");
+ asm volatile("xvxor.v $xr3, $xr3, $xr5");
+
+ /* xr4, xr5: higher 4 bits of each byte of (Q + Qxy) */
+ asm volatile("xvsrli.b $xr4, $xr0, 4");
+ asm volatile("xvsrli.b $xr5, $xr1, 4");
+ /* xr0, xr1: lower 4 bits of each byte of (Q + Qxy) */
+ asm volatile("xvandi.b $xr0, $xr0, 0x0f");
+ asm volatile("xvandi.b $xr1, $xr1, 0x0f");
+ /* lookup from qmul[0] */
+ asm volatile("xvshuf.b $xr0, $xr20, $xr20, $xr0");
+ asm volatile("xvshuf.b $xr1, $xr20, $xr20, $xr1");
+ /* lookup from qmul[16] */
+ asm volatile("xvshuf.b $xr4, $xr21, $xr21, $xr4");
+ asm volatile("xvshuf.b $xr5, $xr21, $xr21, $xr5");
+ /* xr6, xr7: B(Q + Qxy) */
+ asm volatile("xvxor.v $xr6, $xr4, $xr0");
+ asm volatile("xvxor.v $xr7, $xr5, $xr1");
+
+ /* xr4, xr5: higher 4 bits of each byte of (P + Pxy) */
+ asm volatile("xvsrli.b $xr4, $xr2, 4");
+ asm volatile("xvsrli.b $xr5, $xr3, 4");
+ /* xr0, xr1: lower 4 bits of each byte of (P + Pxy) */
+ asm volatile("xvandi.b $xr0, $xr2, 0x0f");
+ asm volatile("xvandi.b $xr1, $xr3, 0x0f");
+ /* lookup from pbmul[0] */
+ asm volatile("xvshuf.b $xr0, $xr22, $xr22, $xr0");
+ asm volatile("xvshuf.b $xr1, $xr22, $xr22, $xr1");
+ /* lookup from pbmul[16] */
+ asm volatile("xvshuf.b $xr4, $xr23, $xr23, $xr4");
+ asm volatile("xvshuf.b $xr5, $xr23, $xr23, $xr5");
+ /* xr0, xr1: A(P + Pxy) */
+ asm volatile("xvxor.v $xr0, $xr0, $xr4");
+ asm volatile("xvxor.v $xr1, $xr1, $xr5");
+
+ /* xr0, xr1: A(P + Pxy) + B(Q + Qxy) = Dx */
+ asm volatile("xvxor.v $xr0, $xr0, $xr6");
+ asm volatile("xvxor.v $xr1, $xr1, $xr7");
+
+ /* xr2, xr3: P + Pxy + Dx = Dy */
+ asm volatile("xvxor.v $xr2, $xr2, $xr0");
+ asm volatile("xvxor.v $xr3, $xr3, $xr1");
+
+ asm volatile("xvst $xr0, %0" : "=m" (dq[0]));
+ asm volatile("xvst $xr1, %0" : "=m" (dq[32]));
+ asm volatile("xvst $xr2, %0" : "=m" (dp[0]));
+ asm volatile("xvst $xr3, %0" : "=m" (dp[32]));
+
+ bytes -= 64;
+ p += 64;
+ q += 64;
+ dp += 64;
+ dq += 64;
+ }
+
+ kernel_fpu_end();
+}
+
+static void raid6_datap_recov_lasx(int disks, size_t bytes, int faila,
+ void **ptrs)
+{
+ u8 *p, *q, *dq;
+ const u8 *qmul; /* Q multiplier table */
+
+ p = (u8 *)ptrs[disks - 2];
+ q = (u8 *)ptrs[disks - 1];
+
+ /*
+ * Compute syndrome with zero for the missing data page
+ * Use the dead data page as temporary storage for delta q
+ */
+ dq = (u8 *)ptrs[faila];
+ ptrs[faila] = (void *)raid6_empty_zero_page;
+ ptrs[disks - 1] = dq;
+
+ raid6_call.gen_syndrome(disks, bytes, ptrs);
+
+ /* Restore pointer table */
+ ptrs[faila] = dq;
+ ptrs[disks - 1] = q;
+
+ /* Now, pick the proper data tables */
+ qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila]]];
+
+ kernel_fpu_begin();
+
+ /* xr22, xr23: qmul */
+ asm volatile("vld $vr22, %0" : : "m" (qmul[0]));
+ asm volatile("xvreplve0.q $xr22, $xr22");
+ asm volatile("vld $vr23, %0" : : "m" (qmul[16]));
+ asm volatile("xvreplve0.q $xr23, $xr23");
+
+ while (bytes) {
+ /* xr0, xr1: P + Dx */
+ asm volatile("xvld $xr0, %0" : : "m" (p[0]));
+ asm volatile("xvld $xr1, %0" : : "m" (p[32]));
+ /* xr2, xr3: Qx */
+ asm volatile("xvld $xr2, %0" : : "m" (dq[0]));
+ asm volatile("xvld $xr3, %0" : : "m" (dq[32]));
+ /* xr2, xr3: Q + Qx */
+ asm volatile("xvld $xr4, %0" : : "m" (q[0]));
+ asm volatile("xvld $xr5, %0" : : "m" (q[32]));
+ asm volatile("xvxor.v $xr2, $xr2, $xr4");
+ asm volatile("xvxor.v $xr3, $xr3, $xr5");
+
+ /* xr4, xr5: higher 4 bits of each byte of (Q + Qx) */
+ asm volatile("xvsrli.b $xr4, $xr2, 4");
+ asm volatile("xvsrli.b $xr5, $xr3, 4");
+ /* xr2, xr3: lower 4 bits of each byte of (Q + Qx) */
+ asm volatile("xvandi.b $xr2, $xr2, 0x0f");
+ asm volatile("xvandi.b $xr3, $xr3, 0x0f");
+ /* lookup from qmul[0] */
+ asm volatile("xvshuf.b $xr2, $xr22, $xr22, $xr2");
+ asm volatile("xvshuf.b $xr3, $xr22, $xr22, $xr3");
+ /* lookup from qmul[16] */
+ asm volatile("xvshuf.b $xr4, $xr23, $xr23, $xr4");
+ asm volatile("xvshuf.b $xr5, $xr23, $xr23, $xr5");
+ /* xr2, xr3: qmul(Q + Qx) = Dx */
+ asm volatile("xvxor.v $xr2, $xr2, $xr4");
+ asm volatile("xvxor.v $xr3, $xr3, $xr5");
+
+ /* xr0, xr1: P + Dx + Dx = P */
+ asm volatile("xvxor.v $xr0, $xr0, $xr2");
+ asm volatile("xvxor.v $xr1, $xr1, $xr3");
+
+ asm volatile("xvst $xr2, %0" : "=m" (dq[0]));
+ asm volatile("xvst $xr3, %0" : "=m" (dq[32]));
+ asm volatile("xvst $xr0, %0" : "=m" (p[0]));
+ asm volatile("xvst $xr1, %0" : "=m" (p[32]));
+
+ bytes -= 64;
+ p += 64;
+ q += 64;
+ dq += 64;
+ }
+
+ kernel_fpu_end();
+}
+
+const struct raid6_recov_calls raid6_recov_lasx = {
+ .data2 = raid6_2data_recov_lasx,
+ .datap = raid6_datap_recov_lasx,
+ .valid = raid6_has_lasx,
+ .name = "lasx",
+ .priority = 2,
+};
+#endif /* CONFIG_CPU_HAS_LASX */
gcc -c -x c - >/dev/null && rm ./-.o && echo yes)
endif
+ifeq ($(ARCH),loongarch64)
+ CFLAGS += -I../../../arch/loongarch/include -DCONFIG_LOONGARCH=1
+ CFLAGS += $(shell echo 'vld $$vr0, $$zero, 0' | \
+ gcc -c -x assembler - >/dev/null 2>&1 && \
+ rm ./-.o && echo -DCONFIG_CPU_HAS_LSX=1)
+ CFLAGS += $(shell echo 'xvld $$xr0, $$zero, 0' | \
+ gcc -c -x assembler - >/dev/null 2>&1 && \
+ rm ./-.o && echo -DCONFIG_CPU_HAS_LASX=1)
+endif
+
ifeq ($(IS_X86),yes)
OBJS += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o avx512.o recov_avx512.o
CFLAGS += -DCONFIG_X86
CFLAGS += -DCONFIG_ALTIVEC
OBJS += altivec1.o altivec2.o altivec4.o altivec8.o \
vpermxor1.o vpermxor2.o vpermxor4.o vpermxor8.o
+else ifeq ($(ARCH),loongarch64)
+ OBJS += loongarch_simd.o recov_loongarch_simd.o
endif
.c.o:
void *entry = xa_entry(xas->xa, node, offset);
xas->xa_node = node;
- if (xa_is_sibling(entry)) {
+ while (xa_is_sibling(entry)) {
offset = xa_to_sibling(entry);
entry = xa_entry(xas->xa, node, offset);
if (node->shift && xa_is_node(entry))
* stores the index into the @id pointer, then stores the entry at
* that index. A concurrent lookup will not see an uninitialised @id.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Expects xa_lock to be held on entry. May
* release and reacquire xa_lock if @gfp flags permit.
* Return: 0 on success, -ENOMEM if memory could not be allocated or
* The search for an empty entry will start at @next and will wrap
* around if necessary.
*
+ * Must only be operated on an xarray initialized with flag XA_FLAGS_ALLOC set
+ * in xa_init_flags().
+ *
* Context: Any context. Expects xa_lock to be held on entry. May
* release and reacquire xa_lock if @gfp flags permit.
* Return: 0 if the allocation succeeded without wrapping. 1 if the
return 0;
}
+void __weak __meminit pmd_init(void *addr)
+{
+}
+
static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr,
unsigned long end)
{
if (!p)
return -ENOMEM;
} else {
- pud_populate(&init_mm, pud,
- early_alloc(PAGE_SIZE, NUMA_NO_NODE));
+ p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
+ pmd_init(p);
+ pud_populate(&init_mm, pud, p);
}
}
zero_pmd_populate(pud, addr, next);
return 0;
}
+void __weak __meminit pud_init(void *addr)
+{
+}
+
static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
unsigned long end)
{
if (!p)
return -ENOMEM;
} else {
- p4d_populate(&init_mm, p4d,
- early_alloc(PAGE_SIZE, NUMA_NO_NODE));
+ p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
+ pud_init(p);
+ p4d_populate(&init_mm, p4d, p);
}
}
zero_pud_populate(p4d, addr, next);
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+#ifndef __HAVE_ARCH_SHADOW_MAP
static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
{
return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
<< KASAN_SHADOW_SCALE_SHIFT);
}
+#endif
static __always_inline bool addr_has_metadata(const void *addr)
{
+#ifdef __HAVE_ARCH_SHADOW_MAP
+ return (kasan_mem_to_shadow((void *)addr) != NULL);
+#else
return (kasan_reset_tag(addr) >=
kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
+#endif
}
/**
*/
static unsigned long kfence_init_pool(void)
{
- unsigned long addr = (unsigned long)__kfence_pool;
+ unsigned long addr;
struct page *pages;
int i;
if (!arch_kfence_init_pool())
- return addr;
+ return (unsigned long)__kfence_pool;
+ addr = (unsigned long)__kfence_pool;
pages = virt_to_page(__kfence_pool);
/*
* @layers: Stack of layers, from the latest to the newest, implemented
* as a flexible array member (FAM).
*/
- struct landlock_layer layers[];
+ struct landlock_layer layers[] __counted_by(num_layers);
};
/**
int channel, unsigned long hwoff,
struct iov_iter *iter, unsigned long bytes)
{
- if (!copy_from_iter(get_dma_ptr(substream->runtime, channel, hwoff),
- bytes, iter))
+ if (copy_from_iter(get_dma_ptr(substream->runtime, channel, hwoff),
+ bytes, iter) != bytes)
return -EFAULT;
return 0;
}
int channel, unsigned long hwoff,
struct iov_iter *iter, unsigned long bytes)
{
- if (!copy_to_iter(get_dma_ptr(substream->runtime, channel, hwoff),
- bytes, iter))
+ if (copy_to_iter(get_dma_ptr(substream->runtime, channel, hwoff),
+ bytes, iter) != bytes)
return -EFAULT;
return 0;
}
err = expand_var_event(event, 0, len, buf, in_kernel);
if (err < 0)
return err;
- if (len != newlen)
- memset(buf + len, 0, newlen - len);
+ if (len != newlen) {
+ if (in_kernel)
+ memset(buf + len, 0, newlen - len);
+ else if (clear_user((__force void __user *)buf + len,
+ newlen - len))
+ return -EFAULT;
+ }
return newlen;
}
EXPORT_SYMBOL(snd_seq_expand_var_event);
/* convert to word unit */
pos = (pos << 1) + rec->loop_start[voice];
count <<= 1;
- LOOP_WRITE(rec, pos, USER_SOCKPTR(NULL), count);
+ LOOP_WRITE(rec, pos, NULL, count);
return 0;
}
/* Initialize CS42L42 companion codec */
cs8409_i2c_bulk_write(cs42l42, cs42l42->init_seq, cs42l42->init_seq_num);
- usleep_range(30000, 35000);
+ msleep(CS42L42_INIT_TIMEOUT_MS);
/* Clear interrupts, by reading interrupt status registers */
cs8409_i2c_bulk_read(cs42l42, irq_regs, ARRAY_SIZE(irq_regs));
#define CS42L42_I2C_SLEEP_US (2000)
#define CS42L42_PDN_TIMEOUT_US (250000)
#define CS42L42_PDN_SLEEP_US (2000)
+#define CS42L42_INIT_TIMEOUT_MS (45)
#define CS42L42_FULL_SCALE_VOL_MASK (2)
#define CS42L42_FULL_SCALE_VOL_0DB (1)
#define CS42L42_FULL_SCALE_VOL_MINUS6DB (0)
}
}
+/* Forcibly assign NID 0x03 to HP while NID 0x02 to SPK */
+static void alc287_fixup_bind_dacs(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ struct alc_spec *spec = codec->spec;
+ static const hda_nid_t conn[] = { 0x02, 0x03 }; /* exclude 0x06 */
+ static const hda_nid_t preferred_pairs[] = {
+ 0x17, 0x02, 0x21, 0x03, 0
+ };
+
+ if (action != HDA_FIXUP_ACT_PRE_PROBE)
+ return;
+
+ snd_hda_override_conn_list(codec, 0x17, ARRAY_SIZE(conn), conn);
+ spec->gen.preferred_dacs = preferred_pairs;
+ spec->gen.auto_mute_via_amp = 1;
+ snd_hda_codec_write_cache(codec, 0x14, 0, AC_VERB_SET_PIN_WIDGET_CONTROL,
+ 0x0); /* Make sure 0x14 was disable */
+}
+
+
enum {
ALC269_FIXUP_GPIO2,
ALC269_FIXUP_SONY_VAIO,
ALC287_FIXUP_TAS2781_I2C,
ALC245_FIXUP_HP_MUTE_LED_COEFBIT,
ALC245_FIXUP_HP_X360_MUTE_LEDS,
+ ALC287_FIXUP_THINKPAD_I2S_SPK,
};
/* A special fixup for Lenovo C940 and Yoga Duet 7;
.chained = true,
.chain_id = ALC245_FIXUP_HP_GPIO_LED
},
+ [ALC287_FIXUP_THINKPAD_I2S_SPK] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc287_fixup_bind_dacs,
+ },
};
static const struct snd_pci_quirk alc269_fixup_tbl[] = {
{0x17, 0x90170111},
{0x19, 0x03a11030},
{0x21, 0x03211020}),
+ SND_HDA_PIN_QUIRK(0x10ec0287, 0x17aa, "Lenovo", ALC287_FIXUP_THINKPAD_I2S_SPK,
+ {0x17, 0x90170110},
+ {0x19, 0x03a11030},
+ {0x21, 0x03211020}),
SND_HDA_PIN_QUIRK(0x10ec0286, 0x1025, "Acer", ALC286_FIXUP_ACER_AIO_MIC_NO_PRESENCE,
{0x12, 0x90a60130},
{0x17, 0x90170110},
return 0;
}
-static int tasdevice_hda_clamp(int val, int max)
-{
- if (val > max)
- val = max;
-
- if (val < 0)
- val = 0;
- return val;
-}
-
static int tasdevice_set_profile_id(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int max = tas_priv->rcabin.ncfgs - 1;
int val, ret = 0;
- val = tasdevice_hda_clamp(nr_profile, max);
+ val = clamp(nr_profile, 0, max);
if (tas_priv->rcabin.profile_cfg_id != val) {
tas_priv->rcabin.profile_cfg_id = val;
int max = tas_fw->nr_programs - 1;
int val, ret = 0;
- val = tasdevice_hda_clamp(nr_program, max);
+ val = clamp(nr_program, 0, max);
if (tas_priv->cur_prog != val) {
tas_priv->cur_prog = val;
int max = tas_fw->nr_configurations - 1;
int val, ret = 0;
- val = tasdevice_hda_clamp(nr_config, max);
+ val = clamp(nr_config, 0, max);
if (tas_priv->cur_conf != val) {
tas_priv->cur_conf = val;
.driver_data = &acp6x_card,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "82TL"),
+ }
+ },
+ {
+ .driver_data = &acp6x_card,
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "82V2"),
}
},
{
.driver_data = &acp6x_card,
.matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "HP"),
+ DMI_MATCH(DMI_BOARD_NAME, "8A3E"),
+ }
+ },
+ {
+ .driver_data = &acp6x_card,
+ .matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "MECHREVO"),
DMI_MATCH(DMI_BOARD_NAME, "MRID6"),
}
/* used to clean the channel index found on RHR's MSB */
static int mchp_pdmc_process(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- struct iov_iter *buf, unsigned long bytes)
+ unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
u8 *dma_ptr = runtime->dma_area + hwoff +
tristate
depends on I2C
+config SND_SOC_WCD_CLASSH
+ tristate
+
config SND_SOC_WCD9335
tristate "WCD9335 Codec"
depends on SLIMBUS
select REGMAP_SLIMBUS
select REGMAP_IRQ
+ select SND_SOC_WCD_CLASSH
help
The WCD9335 is a standalone Hi-Fi audio CODEC IC, supports
Qualcomm Technologies, Inc. (QTI) multimedia solutions,
depends on SLIMBUS
select REGMAP_IRQ
select REGMAP_SLIMBUS
+ select SND_SOC_WCD_CLASSH
select SND_SOC_WCD_MBHC
depends on MFD_WCD934X || COMPILE_TEST
help
depends on SND_SOC_WCD938X_SDW
tristate
depends on SOUNDWIRE || !SOUNDWIRE
+ select SND_SOC_WCD_CLASSH
config SND_SOC_WCD938X_SDW
tristate "WCD9380/WCD9385 Codec - SDW"
snd-soc-twl6040-objs := twl6040.o
snd-soc-uda1334-objs := uda1334.o
snd-soc-uda1380-objs := uda1380.o
+snd-soc-wcd-classh-objs := wcd-clsh-v2.o
snd-soc-wcd-mbhc-objs := wcd-mbhc-v2.o
-snd-soc-wcd9335-objs := wcd-clsh-v2.o wcd9335.o
-snd-soc-wcd934x-objs := wcd-clsh-v2.o wcd934x.o
-snd-soc-wcd938x-objs := wcd938x.o wcd-clsh-v2.o
+snd-soc-wcd9335-objs := wcd9335.o
+snd-soc-wcd934x-objs := wcd934x.o
+snd-soc-wcd938x-objs := wcd938x.o
snd-soc-wcd938x-sdw-objs := wcd938x-sdw.o
snd-soc-wl1273-objs := wl1273.o
snd-soc-wm-adsp-objs := wm_adsp.o
obj-$(CONFIG_SND_SOC_TWL6040) += snd-soc-twl6040.o
obj-$(CONFIG_SND_SOC_UDA1334) += snd-soc-uda1334.o
obj-$(CONFIG_SND_SOC_UDA1380) += snd-soc-uda1380.o
+obj-$(CONFIG_SND_SOC_WCD_CLASSH) += snd-soc-wcd-classh.o
obj-$(CONFIG_SND_SOC_WCD_MBHC) += snd-soc-wcd-mbhc.o
obj-$(CONFIG_SND_SOC_WCD9335) += snd-soc-wcd9335.o
obj-$(CONFIG_SND_SOC_WCD934X) += snd-soc-wcd934x.o
};
static const struct snd_kcontrol_new cs35l45_dac_muxes[] = {
- SOC_DAPM_ENUM("DACPCM1 Source", cs35l45_dacpcm_enums[0]),
+ SOC_DAPM_ENUM("DACPCM Source", cs35l45_dacpcm_enums[0]),
};
static const struct snd_soc_dapm_widget cs35l45_dapm_widgets[] = {
SND_SOC_DAPM_MUX("DSP_RX7 Source", SND_SOC_NOPM, 0, 0, &cs35l45_dsp_muxes[6]),
SND_SOC_DAPM_MUX("DSP_RX8 Source", SND_SOC_NOPM, 0, 0, &cs35l45_dsp_muxes[7]),
- SND_SOC_DAPM_MUX("DACPCM1 Source", SND_SOC_NOPM, 0, 0, &cs35l45_dac_muxes[0]),
+ SND_SOC_DAPM_MUX("DACPCM Source", SND_SOC_NOPM, 0, 0, &cs35l45_dac_muxes[0]),
SND_SOC_DAPM_OUT_DRV("AMP", SND_SOC_NOPM, 0, 0, NULL, 0),
{ "ASP_RX1", NULL, "ASP_EN" },
{ "ASP_RX2", NULL, "ASP_EN" },
- { "AMP", NULL, "DACPCM1 Source"},
+ { "AMP", NULL, "DACPCM Source"},
{ "AMP", NULL, "GLOBAL_EN"},
CS35L45_DSP_MUX_ROUTE("DSP_RX1"),
{"DSP1 Preload", NULL, "DSP1 Preloader"},
{"DSP1", NULL, "DSP1 Preloader"},
- CS35L45_DAC_MUX_ROUTE("DACPCM1"),
+ CS35L45_DAC_MUX_ROUTE("DACPCM"),
{ "SPK", NULL, "AMP"},
};
ret = regmap_read(cs35l45->regmap, CS35L45_DSP_VIRT2_MBOX_3, &mbox_val);
if (!ret && mbox_val)
- ret = cs35l45_dsp_virt2_mbox3_irq_handle(cs35l45, mbox_val & CS35L45_MBOX3_CMD_MASK,
+ cs35l45_dsp_virt2_mbox3_irq_handle(cs35l45, mbox_val & CS35L45_MBOX3_CMD_MASK,
(mbox_val & CS35L45_MBOX3_DATA_MASK) >> CS35L45_MBOX3_DATA_SHIFT);
/* Handle DSP trace log IRQ */
switch (dev_id[0]) {
case 0x35A450:
+ case 0x35A460:
break;
default:
dev_err(cs35l45->dev, "Bad DEVID 0x%x\n", dev_id[0]);
{
unsigned int reg;
unsigned int val;
- int ret;
+ int read_ret, poll_ret;
if (cs35l56_base->rev < CS35L56_REVID_B0)
reg = CS35L56_DSP1_HALO_STATE_A1;
else
reg = CS35L56_DSP1_HALO_STATE;
- ret = regmap_read_poll_timeout(cs35l56_base->regmap, reg,
- val,
- (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE),
- CS35L56_HALO_STATE_POLL_US,
- CS35L56_HALO_STATE_TIMEOUT_US);
-
- if ((ret < 0) && (ret != -ETIMEDOUT)) {
- dev_err(cs35l56_base->dev, "Failed to read HALO_STATE: %d\n", ret);
- return ret;
- }
-
- if ((ret == -ETIMEDOUT) || (val != CS35L56_HALO_STATE_BOOT_DONE)) {
- dev_err(cs35l56_base->dev, "Firmware boot fail: HALO_STATE=%#x\n", val);
+ /*
+ * This can't be a regmap_read_poll_timeout() because cs35l56 will NAK
+ * I2C until it has booted which would terminate the poll
+ */
+ poll_ret = read_poll_timeout(regmap_read, read_ret,
+ (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE),
+ CS35L56_HALO_STATE_POLL_US,
+ CS35L56_HALO_STATE_TIMEOUT_US,
+ false,
+ cs35l56_base->regmap, reg, &val);
+
+ if (poll_ret) {
+ dev_err(cs35l56_base->dev, "Firmware boot timed out(%d): HALO_STATE=%#x\n",
+ read_ret, val);
return -EIO;
}
// Don't use devm as we need to get against the MFD device
priv->mclk = clk_get_optional(cs42l43->dev, "mclk");
if (IS_ERR(priv->mclk)) {
- dev_err_probe(priv->dev, PTR_ERR(priv->mclk), "Failed to get mclk\n");
+ ret = PTR_ERR(priv->mclk);
+ dev_err_probe(priv->dev, ret, "Failed to get mclk\n");
goto err_pm;
}
{
struct snd_soc_jack *mic_jack = NULL;
struct snd_soc_jack *btn_jack = NULL;
- int *type = (int *)data;
+ int type;
- if (*type & SND_JACK_MICROPHONE)
- mic_jack = hs_jack;
- if (*type & (SND_JACK_BTN_0 | SND_JACK_BTN_1 |
- SND_JACK_BTN_2 | SND_JACK_BTN_3))
- btn_jack = hs_jack;
+ if (hs_jack) {
+ type = *(int *)data;
+
+ if (type & SND_JACK_MICROPHONE)
+ mic_jack = hs_jack;
+ if (type & (SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3))
+ btn_jack = hs_jack;
+ }
return rt5645_set_jack_detect(component, hs_jack, mic_jack, btn_jack);
}
wcd_clsh_v2_set_hph_mode(comp, mode);
}
+EXPORT_SYMBOL_GPL(wcd_clsh_set_hph_mode);
static void wcd_clsh_set_flyback_current(struct snd_soc_component *comp,
int mode)
return 0;
}
+EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_set_state);
int wcd_clsh_ctrl_get_state(struct wcd_clsh_ctrl *ctrl)
{
return ctrl->state;
}
+EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_get_state);
struct wcd_clsh_ctrl *wcd_clsh_ctrl_alloc(struct snd_soc_component *comp,
int version)
return ctrl;
}
+EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_alloc);
void wcd_clsh_ctrl_free(struct wcd_clsh_ctrl *ctrl)
{
kfree(ctrl);
}
+EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_free);
+
+MODULE_DESCRIPTION("WCD93XX Class-H driver");
+MODULE_LICENSE("GPL");
ret = avs_load_topology(component, filename);
kfree(filename);
+ if (ret == -ENOENT && !strncmp(mach->tplg_filename, "hda-", 4)) {
+ unsigned int vendor_id;
+
+ if (sscanf(mach->tplg_filename, "hda-%08x-tplg.bin", &vendor_id) != 1)
+ return ret;
+
+ if (((vendor_id >> 16) & 0xFFFF) == 0x8086)
+ mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
+ "hda-8086-generic-tplg.bin");
+ else
+ mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
+ "hda-generic-tplg.bin");
+
+ filename = kasprintf(GFP_KERNEL, "%s/%s", component->driver->topology_name_prefix,
+ mach->tplg_filename);
+ if (!filename)
+ return -ENOMEM;
+
+ dev_info(card->dev, "trying to load fallback topology %s\n", mach->tplg_filename);
+ ret = avs_load_topology(component, filename);
+ kfree(filename);
+ }
if (ret < 0)
return ret;
int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
- struct iov_iter *buf, unsigned long bytes)
+ struct iov_iter *iter, unsigned long bytes)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component;
if (component->driver->copy)
return soc_component_ret(component,
component->driver->copy(component, substream,
- channel, pos, buf, bytes));
+ channel, pos, iter, bytes));
return -EINVAL;
}
static int dmaengine_copy(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- struct iov_iter *buf, unsigned long bytes)
+ struct iov_iter *iter, unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
int (*process)(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- struct iov_iter *buf, unsigned long bytes) = pcm->config->process;
+ unsigned long bytes) = pcm->config->process;
bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
void *dma_ptr = runtime->dma_area + hwoff +
channel * (runtime->dma_bytes / runtime->channels);
if (is_playback)
- if (copy_from_iter(dma_ptr, bytes, buf) != bytes)
+ if (copy_from_iter(dma_ptr, bytes, iter) != bytes)
return -EFAULT;
if (process) {
- int ret = process(substream, channel, hwoff, buf, bytes);
+ int ret = process(substream, channel, hwoff, bytes);
if (ret < 0)
return ret;
}
if (!is_playback)
- if (copy_to_iter(dma_ptr, bytes, buf) != bytes)
+ if (copy_to_iter(dma_ptr, bytes, iter) != bytes)
return -EFAULT;
return 0;
static int stm32_sai_pcm_process_spdif(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- struct iov_iter *buf, unsigned long bytes)
+ unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
if (!ep)
return;
- for (i = 0; i < ep->num_urbs; ++i) {
+ for (i = 0; i < NUM_URBS; ++i) {
ctx = &ep->urbs[i];
if (!ctx->urb)
break;
}
/* allocate URBs for an EP */
+/* the callers should handle allocation errors via free_midi_urbs() */
static int alloc_midi_urbs(struct snd_usb_midi2_endpoint *ep)
{
struct snd_usb_midi2_urb *ctx;
return -EIO;
if (ep->direction == STR_OUT) {
err = alloc_midi_urbs(ep);
- if (err)
+ if (err) {
+ free_midi_urbs(ep);
return err;
+ }
}
return 0;
}
item_kill_tree(xa);
}
-bool stop_iteration = false;
+bool stop_iteration;
static void *creator_func(void *ptr)
{
pthread_t worker_thread[num_threads];
int i;
+ stop_iteration = false;
pthread_create(&worker_thread[0], NULL, &creator_func, xa);
for (i = 1; i < num_threads; i++)
pthread_create(&worker_thread[i], NULL, &iterator_func, xa);
item_kill_tree(xa);
}
+static void *load_creator(void *ptr)
+{
+ /* 'order' is set up to ensure we have sibling entries */
+ unsigned int order;
+ struct radix_tree_root *tree = ptr;
+ int i;
+
+ rcu_register_thread();
+ item_insert_order(tree, 3 << RADIX_TREE_MAP_SHIFT, 0);
+ item_insert_order(tree, 2 << RADIX_TREE_MAP_SHIFT, 0);
+ for (i = 0; i < 10000; i++) {
+ for (order = 1; order < RADIX_TREE_MAP_SHIFT; order++) {
+ unsigned long index = (3 << RADIX_TREE_MAP_SHIFT) -
+ (1 << order);
+ item_insert_order(tree, index, order);
+ item_delete_rcu(tree, index);
+ }
+ }
+ rcu_unregister_thread();
+
+ stop_iteration = true;
+ return NULL;
+}
+
+static void *load_worker(void *ptr)
+{
+ unsigned long index = (3 << RADIX_TREE_MAP_SHIFT) - 1;
+
+ rcu_register_thread();
+ while (!stop_iteration) {
+ struct item *item = xa_load(ptr, index);
+ assert(!xa_is_internal(item));
+ }
+ rcu_unregister_thread();
+
+ return NULL;
+}
+
+static void load_race(struct xarray *xa)
+{
+ const int num_threads = sysconf(_SC_NPROCESSORS_ONLN) * 4;
+ pthread_t worker_thread[num_threads];
+ int i;
+
+ stop_iteration = false;
+ pthread_create(&worker_thread[0], NULL, &load_creator, xa);
+ for (i = 1; i < num_threads; i++)
+ pthread_create(&worker_thread[i], NULL, &load_worker, xa);
+
+ for (i = 0; i < num_threads; i++)
+ pthread_join(worker_thread[i], NULL);
+
+ item_kill_tree(xa);
+}
+
static DEFINE_XARRAY(array);
void multiorder_checks(void)
multiorder_iteration(&array);
multiorder_tagged_iteration(&array);
multiorder_iteration_race(&array);
+ load_race(&array);
radix_tree_cpu_dead(0);
}
-int __weak main(void)
+int __weak main(int argc, char **argv)
{
+ int opt;
+
+ while ((opt = getopt(argc, argv, "ls:v")) != -1) {
+ if (opt == 'v')
+ test_verbose++;
+ }
+
rcu_register_thread();
radix_tree_init();
multiorder_checks();
{
char str[32];
int len;
- bool res;
+ bool res = true;
FILE *const inf = fopen("/proc/filesystems", "r");
/*
/* filesystem can be null for bind mounts. */
if (!filesystem)
- return true;
+ goto out;
len = snprintf(str, sizeof(str), "nodev\t%s\n", filesystem);
if (len >= sizeof(str))
/* Ignores too-long filesystem names. */
- return true;
+ goto out;
res = fgrep(inf, str);
+
+out:
fclose(inf);
return res;
}
projects / platform / kernel / linux-rpi.git / commitdiff