Merge branches 'for-next/kvm-build-fix', 'for-next/va-refactor', 'for-next/lto',...

[platform/kernel/linux-rpi.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f858c35..2272a95 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -331,16 +331,16 @@ config BROKEN_GAS_INST
 config KASAN_SHADOW_OFFSET
        hex
        depends on KASAN
-       default 0xdfffa00000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && !KASAN_SW_TAGS
-       default 0xdfffd00000000000 if ARM64_VA_BITS_47 && !KASAN_SW_TAGS
-       default 0xdffffe8000000000 if ARM64_VA_BITS_42 && !KASAN_SW_TAGS
-       default 0xdfffffd000000000 if ARM64_VA_BITS_39 && !KASAN_SW_TAGS
-       default 0xdffffffa00000000 if ARM64_VA_BITS_36 && !KASAN_SW_TAGS
-       default 0xefff900000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && KASAN_SW_TAGS
-       default 0xefffc80000000000 if ARM64_VA_BITS_47 && KASAN_SW_TAGS
-       default 0xeffffe4000000000 if ARM64_VA_BITS_42 && KASAN_SW_TAGS
-       default 0xefffffc800000000 if ARM64_VA_BITS_39 && KASAN_SW_TAGS
-       default 0xeffffff900000000 if ARM64_VA_BITS_36 && KASAN_SW_TAGS
+       default 0xdfff800000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && !KASAN_SW_TAGS
+       default 0xdfffc00000000000 if ARM64_VA_BITS_47 && !KASAN_SW_TAGS
+       default 0xdffffe0000000000 if ARM64_VA_BITS_42 && !KASAN_SW_TAGS
+       default 0xdfffffc000000000 if ARM64_VA_BITS_39 && !KASAN_SW_TAGS
+       default 0xdffffff800000000 if ARM64_VA_BITS_36 && !KASAN_SW_TAGS
+       default 0xefff800000000000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) && KASAN_SW_TAGS
+       default 0xefffc00000000000 if ARM64_VA_BITS_47 && KASAN_SW_TAGS
+       default 0xeffffe0000000000 if ARM64_VA_BITS_42 && KASAN_SW_TAGS
+       default 0xefffffc000000000 if ARM64_VA_BITS_39 && KASAN_SW_TAGS
+       default 0xeffffff800000000 if ARM64_VA_BITS_36 && KASAN_SW_TAGS
        default 0xffffffffffffffff
 
 source "arch/arm64/Kconfig.platforms"
@@ -636,6 +636,26 @@ config ARM64_ERRATUM_1542419
 
          If unsure, say Y.
 
+config ARM64_ERRATUM_1508412
+       bool "Cortex-A77: 1508412: workaround deadlock on sequence of NC/Device load and store exclusive or PAR read"
+       default y
+       help
+         This option adds a workaround for Arm Cortex-A77 erratum 1508412.
+
+         Affected Cortex-A77 cores (r0p0, r1p0) could deadlock on a sequence
+         of a store-exclusive or read of PAR_EL1 and a load with device or
+         non-cacheable memory attributes. The workaround depends on a firmware
+         counterpart.
+
+         KVM guests must also have the workaround implemented or they can
+         deadlock the system.
+
+         Work around the issue by inserting DMB SY barriers around PAR_EL1
+         register reads and warning KVM users. The DMB barrier is sufficient
+         to prevent a speculative PAR_EL1 read.
+
+         If unsure, say Y.
+
 config CAVIUM_ERRATUM_22375
        bool "Cavium erratum 22375, 24313"
        default y
@@ -982,7 +1002,7 @@ config NUMA
 config NODES_SHIFT
        int "Maximum NUMA Nodes (as a power of 2)"
        range 1 10
-       default "2"
+       default "4"
        depends on NEED_MULTIPLE_NODES
        help
          Specify the maximum number of NUMA Nodes available on the target
@@ -1368,6 +1388,9 @@ config ARM64_PAN
         The feature is detected at runtime, and will remain as a 'nop'
         instruction if the cpu does not implement the feature.
 
+config AS_HAS_LDAPR
+       def_bool $(as-instr,.arch_extension rcpc)
+
 config ARM64_LSE_ATOMICS
        bool
        default ARM64_USE_LSE_ATOMICS
@@ -1826,15 +1849,36 @@ config CMDLINE
          entering them here. As a minimum, you should specify the the
          root device (e.g. root=/dev/nfs).
 
+choice
+       prompt "Kernel command line type" if CMDLINE != ""
+       default CMDLINE_FROM_BOOTLOADER
+       help
+         Choose how the kernel will handle the provided default kernel
+         command line string.
+
+config CMDLINE_FROM_BOOTLOADER
+       bool "Use bootloader kernel arguments if available"
+       help
+         Uses the command-line options passed by the boot loader. If
+         the boot loader doesn't provide any, the default kernel command
+         string provided in CMDLINE will be used.
+
+config CMDLINE_EXTEND
+       bool "Extend bootloader kernel arguments"
+       help
+         The command-line arguments provided by the boot loader will be
+         appended to the default kernel command string.
+
 config CMDLINE_FORCE
        bool "Always use the default kernel command string"
-       depends on CMDLINE != ""
        help
          Always use the default kernel command string, even if the boot
          loader passes other arguments to the kernel.
          This is useful if you cannot or don't want to change the
          command-line options your boot loader passes to the kernel.
 
+endchoice
+
 config EFI_STUB
        bool