1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012,2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
6 * Derived from arch/arm/include/asm/kvm_host.h:
7 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
8 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
11 #ifndef __ARM64_KVM_HOST_H__
12 #define __ARM64_KVM_HOST_H__
14 #include <linux/arm-smccc.h>
15 #include <linux/bitmap.h>
16 #include <linux/types.h>
17 #include <linux/jump_label.h>
18 #include <linux/kvm_types.h>
19 #include <linux/percpu.h>
20 #include <linux/psci.h>
21 #include <asm/arch_gicv3.h>
22 #include <asm/barrier.h>
23 #include <asm/cpufeature.h>
24 #include <asm/cputype.h>
25 #include <asm/daifflags.h>
26 #include <asm/fpsimd.h>
28 #include <asm/kvm_asm.h>
29 #include <asm/thread_info.h>
31 #define __KVM_HAVE_ARCH_INTC_INITIALIZED
33 #define KVM_HALT_POLL_NS_DEFAULT 500000
35 #include <kvm/arm_vgic.h>
36 #include <kvm/arm_arch_timer.h>
37 #include <kvm/arm_pmu.h>
39 #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS
41 #define KVM_VCPU_MAX_FEATURES 7
43 #define KVM_REQ_SLEEP \
44 KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
45 #define KVM_REQ_IRQ_PENDING KVM_ARCH_REQ(1)
46 #define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(2)
47 #define KVM_REQ_RECORD_STEAL KVM_ARCH_REQ(3)
48 #define KVM_REQ_RELOAD_GICv4 KVM_ARCH_REQ(4)
50 #define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \
51 KVM_DIRTY_LOG_INITIALLY_SET)
54 * Mode of operation configurable with kvm-arm.mode early param.
55 * See Documentation/admin-guide/kernel-parameters.txt for more information.
61 enum kvm_mode kvm_get_mode(void);
63 DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use);
65 extern unsigned int kvm_sve_max_vl;
66 int kvm_arm_init_sve(void);
68 int __attribute_const__ kvm_target_cpu(void);
69 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
70 void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu);
73 /* The VMID generation used for the virt. memory system */
82 * stage2 entry level table
84 * Two kvm_s2_mmu structures in the same VM can point to the same
85 * pgd here. This happens when running a guest using a
86 * translation regime that isn't affected by its own stage-2
87 * translation, such as a non-VHE hypervisor running at vEL2, or
88 * for vEL1/EL0 with vHCR_EL2.VM == 0. In that case, we use the
89 * canonical stage-2 page tables.
92 struct kvm_pgtable *pgt;
94 /* The last vcpu id that ran on each physical CPU */
95 int __percpu *last_vcpu_ran;
100 struct kvm_arch_memory_slot {
104 struct kvm_s2_mmu mmu;
106 /* VTCR_EL2 value for this VM */
109 /* The maximum number of vCPUs depends on the used GIC model */
112 /* Interrupt controller */
113 struct vgic_dist vgic;
115 /* Mandated version of PSCI */
119 * If we encounter a data abort without valid instruction syndrome
120 * information, report this to user space. User space can (and
121 * should) opt in to this feature if KVM_CAP_ARM_NISV_TO_USER is
124 bool return_nisv_io_abort_to_user;
127 * VM-wide PMU filter, implemented as a bitmap and big enough for
128 * up to 2^10 events (ARMv8.0) or 2^16 events (ARMv8.1+).
130 unsigned long *pmu_filter;
137 struct kvm_vcpu_fault_info {
138 u32 esr_el2; /* Hyp Syndrom Register */
139 u64 far_el2; /* Hyp Fault Address Register */
140 u64 hpfar_el2; /* Hyp IPA Fault Address Register */
141 u64 disr_el1; /* Deferred [SError] Status Register */
145 __INVALID_SYSREG__, /* 0 is reserved as an invalid value */
146 MPIDR_EL1, /* MultiProcessor Affinity Register */
147 CSSELR_EL1, /* Cache Size Selection Register */
148 SCTLR_EL1, /* System Control Register */
149 ACTLR_EL1, /* Auxiliary Control Register */
150 CPACR_EL1, /* Coprocessor Access Control */
151 ZCR_EL1, /* SVE Control */
152 TTBR0_EL1, /* Translation Table Base Register 0 */
153 TTBR1_EL1, /* Translation Table Base Register 1 */
154 TCR_EL1, /* Translation Control Register */
155 ESR_EL1, /* Exception Syndrome Register */
156 AFSR0_EL1, /* Auxiliary Fault Status Register 0 */
157 AFSR1_EL1, /* Auxiliary Fault Status Register 1 */
158 FAR_EL1, /* Fault Address Register */
159 MAIR_EL1, /* Memory Attribute Indirection Register */
160 VBAR_EL1, /* Vector Base Address Register */
161 CONTEXTIDR_EL1, /* Context ID Register */
162 TPIDR_EL0, /* Thread ID, User R/W */
163 TPIDRRO_EL0, /* Thread ID, User R/O */
164 TPIDR_EL1, /* Thread ID, Privileged */
165 AMAIR_EL1, /* Aux Memory Attribute Indirection Register */
166 CNTKCTL_EL1, /* Timer Control Register (EL1) */
167 PAR_EL1, /* Physical Address Register */
168 MDSCR_EL1, /* Monitor Debug System Control Register */
169 MDCCINT_EL1, /* Monitor Debug Comms Channel Interrupt Enable Reg */
170 DISR_EL1, /* Deferred Interrupt Status Register */
172 /* Performance Monitors Registers */
173 PMCR_EL0, /* Control Register */
174 PMSELR_EL0, /* Event Counter Selection Register */
175 PMEVCNTR0_EL0, /* Event Counter Register (0-30) */
176 PMEVCNTR30_EL0 = PMEVCNTR0_EL0 + 30,
177 PMCCNTR_EL0, /* Cycle Counter Register */
178 PMEVTYPER0_EL0, /* Event Type Register (0-30) */
179 PMEVTYPER30_EL0 = PMEVTYPER0_EL0 + 30,
180 PMCCFILTR_EL0, /* Cycle Count Filter Register */
181 PMCNTENSET_EL0, /* Count Enable Set Register */
182 PMINTENSET_EL1, /* Interrupt Enable Set Register */
183 PMOVSSET_EL0, /* Overflow Flag Status Set Register */
184 PMSWINC_EL0, /* Software Increment Register */
185 PMUSERENR_EL0, /* User Enable Register */
187 /* Pointer Authentication Registers in a strict increasing order. */
209 /* 32bit specific registers. Keep them at the end of the range */
210 DACR32_EL2, /* Domain Access Control Register */
211 IFSR32_EL2, /* Instruction Fault Status Register */
212 FPEXC32_EL2, /* Floating-Point Exception Control Register */
213 DBGVCR32_EL2, /* Debug Vector Catch Register */
215 NR_SYS_REGS /* Nothing after this line! */
218 struct kvm_cpu_context {
219 struct user_pt_regs regs; /* sp = sp_el0 */
226 struct user_fpsimd_state fp_regs;
228 u64 sys_regs[NR_SYS_REGS];
230 struct kvm_vcpu *__hyp_running_vcpu;
233 struct kvm_pmu_events {
238 struct kvm_host_data {
239 struct kvm_cpu_context host_ctxt;
240 struct kvm_pmu_events pmu_events;
243 struct kvm_host_psci_config {
244 /* PSCI version used by host. */
247 /* Function IDs used by host if version is v0.1. */
248 struct psci_0_1_function_ids function_ids_0_1;
250 bool psci_0_1_cpu_suspend_implemented;
251 bool psci_0_1_cpu_on_implemented;
252 bool psci_0_1_cpu_off_implemented;
253 bool psci_0_1_migrate_implemented;
256 extern struct kvm_host_psci_config kvm_nvhe_sym(kvm_host_psci_config);
257 #define kvm_host_psci_config CHOOSE_NVHE_SYM(kvm_host_psci_config)
259 extern s64 kvm_nvhe_sym(hyp_physvirt_offset);
260 #define hyp_physvirt_offset CHOOSE_NVHE_SYM(hyp_physvirt_offset)
262 extern u64 kvm_nvhe_sym(hyp_cpu_logical_map)[NR_CPUS];
263 #define hyp_cpu_logical_map CHOOSE_NVHE_SYM(hyp_cpu_logical_map)
265 struct vcpu_reset_state {
272 struct kvm_vcpu_arch {
273 struct kvm_cpu_context ctxt;
275 unsigned int sve_max_vl;
277 /* Stage 2 paging state used by the hardware on next switch */
278 struct kvm_s2_mmu *hw_mmu;
280 /* HYP configuration */
284 /* Exception Information */
285 struct kvm_vcpu_fault_info fault;
287 /* State of various workarounds, see kvm_asm.h for bit assignment */
288 u64 workaround_flags;
290 /* Miscellaneous vcpu state flags */
294 * We maintain more than a single set of debug registers to support
295 * debugging the guest from the host and to maintain separate host and
296 * guest state during world switches. vcpu_debug_state are the debug
297 * registers of the vcpu as the guest sees them. host_debug_state are
298 * the host registers which are saved and restored during
299 * world switches. external_debug_state contains the debug
300 * values we want to debug the guest. This is set via the
301 * KVM_SET_GUEST_DEBUG ioctl.
303 * debug_ptr points to the set of debug registers that should be loaded
304 * onto the hardware when running the guest.
306 struct kvm_guest_debug_arch *debug_ptr;
307 struct kvm_guest_debug_arch vcpu_debug_state;
308 struct kvm_guest_debug_arch external_debug_state;
310 struct thread_info *host_thread_info; /* hyp VA */
311 struct user_fpsimd_state *host_fpsimd_state; /* hyp VA */
314 /* {Break,watch}point registers */
315 struct kvm_guest_debug_arch regs;
316 /* Statistical profiling extension */
321 struct vgic_cpu vgic_cpu;
322 struct arch_timer_cpu timer_cpu;
326 * Anything that is not used directly from assembly code goes
331 * Guest registers we preserve during guest debugging.
333 * These shadow registers are updated by the kvm_handle_sys_reg
334 * trap handler if the guest accesses or updates them while we
335 * are using guest debug.
339 } guest_debug_preserved;
341 /* vcpu power-off state */
344 /* Don't run the guest (internal implementation need) */
347 /* Cache some mmu pages needed inside spinlock regions */
348 struct kvm_mmu_memory_cache mmu_page_cache;
350 /* Target CPU and feature flags */
352 DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
354 /* Detect first run of a vcpu */
357 /* Virtual SError ESR to restore when HCR_EL2.VSE is set */
360 /* Additional reset state */
361 struct vcpu_reset_state reset_state;
363 /* True when deferrable sysregs are loaded on the physical CPU,
364 * see kvm_vcpu_load_sysregs_vhe and kvm_vcpu_put_sysregs_vhe. */
365 bool sysregs_loaded_on_cpu;
374 /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */
375 #define vcpu_sve_pffr(vcpu) ((void *)((char *)((vcpu)->arch.sve_state) + \
376 sve_ffr_offset((vcpu)->arch.sve_max_vl)))
378 #define vcpu_sve_state_size(vcpu) ({ \
380 unsigned int __vcpu_vq; \
382 if (WARN_ON(!sve_vl_valid((vcpu)->arch.sve_max_vl))) { \
385 __vcpu_vq = sve_vq_from_vl((vcpu)->arch.sve_max_vl); \
386 __size_ret = SVE_SIG_REGS_SIZE(__vcpu_vq); \
392 /* vcpu_arch flags field values: */
393 #define KVM_ARM64_DEBUG_DIRTY (1 << 0)
394 #define KVM_ARM64_FP_ENABLED (1 << 1) /* guest FP regs loaded */
395 #define KVM_ARM64_FP_HOST (1 << 2) /* host FP regs loaded */
396 #define KVM_ARM64_HOST_SVE_IN_USE (1 << 3) /* backup for host TIF_SVE */
397 #define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */
398 #define KVM_ARM64_GUEST_HAS_SVE (1 << 5) /* SVE exposed to guest */
399 #define KVM_ARM64_VCPU_SVE_FINALIZED (1 << 6) /* SVE config completed */
400 #define KVM_ARM64_GUEST_HAS_PTRAUTH (1 << 7) /* PTRAUTH exposed to guest */
401 #define KVM_ARM64_PENDING_EXCEPTION (1 << 8) /* Exception pending */
402 #define KVM_ARM64_EXCEPT_MASK (7 << 9) /* Target EL/MODE */
404 #define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \
405 KVM_GUESTDBG_USE_SW_BP | \
406 KVM_GUESTDBG_USE_HW | \
407 KVM_GUESTDBG_SINGLESTEP)
409 * When KVM_ARM64_PENDING_EXCEPTION is set, KVM_ARM64_EXCEPT_MASK can
410 * take the following values:
414 #define KVM_ARM64_EXCEPT_AA32_UND (0 << 9)
415 #define KVM_ARM64_EXCEPT_AA32_IABT (1 << 9)
416 #define KVM_ARM64_EXCEPT_AA32_DABT (2 << 9)
418 #define KVM_ARM64_EXCEPT_AA64_ELx_SYNC (0 << 9)
419 #define KVM_ARM64_EXCEPT_AA64_ELx_IRQ (1 << 9)
420 #define KVM_ARM64_EXCEPT_AA64_ELx_FIQ (2 << 9)
421 #define KVM_ARM64_EXCEPT_AA64_ELx_SERR (3 << 9)
422 #define KVM_ARM64_EXCEPT_AA64_EL1 (0 << 11)
423 #define KVM_ARM64_EXCEPT_AA64_EL2 (1 << 11)
426 * Overlaps with KVM_ARM64_EXCEPT_MASK on purpose so that it can't be
427 * set together with an exception...
429 #define KVM_ARM64_INCREMENT_PC (1 << 9) /* Increment PC */
431 #define vcpu_has_sve(vcpu) (system_supports_sve() && \
432 ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE))
434 #ifdef CONFIG_ARM64_PTR_AUTH
435 #define vcpu_has_ptrauth(vcpu) \
436 ((cpus_have_final_cap(ARM64_HAS_ADDRESS_AUTH) || \
437 cpus_have_final_cap(ARM64_HAS_GENERIC_AUTH)) && \
438 (vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_PTRAUTH)
440 #define vcpu_has_ptrauth(vcpu) false
443 #define vcpu_gp_regs(v) (&(v)->arch.ctxt.regs)
446 * Only use __vcpu_sys_reg/ctxt_sys_reg if you know you want the
447 * memory backed version of a register, and not the one most recently
448 * accessed by a running VCPU. For example, for userspace access or
449 * for system registers that are never context switched, but only
452 #define __ctxt_sys_reg(c,r) (&(c)->sys_regs[(r)])
454 #define ctxt_sys_reg(c,r) (*__ctxt_sys_reg(c,r))
456 #define __vcpu_sys_reg(v,r) (ctxt_sys_reg(&(v)->arch.ctxt, (r)))
458 u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg);
459 void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg);
461 static inline bool __vcpu_read_sys_reg_from_cpu(int reg, u64 *val)
466 * System registers listed in the switch are not saved on every
467 * exit from the guest but are only saved on vcpu_put.
469 * Note that MPIDR_EL1 for the guest is set by KVM via VMPIDR_EL2 but
470 * should never be listed below, because the guest cannot modify its
471 * own MPIDR_EL1 and MPIDR_EL1 is accessed for VCPU A from VCPU B's
472 * thread when emulating cross-VCPU communication.
478 case CSSELR_EL1: *val = read_sysreg_s(SYS_CSSELR_EL1); break;
479 case SCTLR_EL1: *val = read_sysreg_s(SYS_SCTLR_EL12); break;
480 case CPACR_EL1: *val = read_sysreg_s(SYS_CPACR_EL12); break;
481 case TTBR0_EL1: *val = read_sysreg_s(SYS_TTBR0_EL12); break;
482 case TTBR1_EL1: *val = read_sysreg_s(SYS_TTBR1_EL12); break;
483 case TCR_EL1: *val = read_sysreg_s(SYS_TCR_EL12); break;
484 case ESR_EL1: *val = read_sysreg_s(SYS_ESR_EL12); break;
485 case AFSR0_EL1: *val = read_sysreg_s(SYS_AFSR0_EL12); break;
486 case AFSR1_EL1: *val = read_sysreg_s(SYS_AFSR1_EL12); break;
487 case FAR_EL1: *val = read_sysreg_s(SYS_FAR_EL12); break;
488 case MAIR_EL1: *val = read_sysreg_s(SYS_MAIR_EL12); break;
489 case VBAR_EL1: *val = read_sysreg_s(SYS_VBAR_EL12); break;
490 case CONTEXTIDR_EL1: *val = read_sysreg_s(SYS_CONTEXTIDR_EL12);break;
491 case TPIDR_EL0: *val = read_sysreg_s(SYS_TPIDR_EL0); break;
492 case TPIDRRO_EL0: *val = read_sysreg_s(SYS_TPIDRRO_EL0); break;
493 case TPIDR_EL1: *val = read_sysreg_s(SYS_TPIDR_EL1); break;
494 case AMAIR_EL1: *val = read_sysreg_s(SYS_AMAIR_EL12); break;
495 case CNTKCTL_EL1: *val = read_sysreg_s(SYS_CNTKCTL_EL12); break;
496 case ELR_EL1: *val = read_sysreg_s(SYS_ELR_EL12); break;
497 case PAR_EL1: *val = read_sysreg_par(); break;
498 case DACR32_EL2: *val = read_sysreg_s(SYS_DACR32_EL2); break;
499 case IFSR32_EL2: *val = read_sysreg_s(SYS_IFSR32_EL2); break;
500 case DBGVCR32_EL2: *val = read_sysreg_s(SYS_DBGVCR32_EL2); break;
501 default: return false;
507 static inline bool __vcpu_write_sys_reg_to_cpu(u64 val, int reg)
512 * System registers listed in the switch are not restored on every
513 * entry to the guest but are only restored on vcpu_load.
515 * Note that MPIDR_EL1 for the guest is set by KVM via VMPIDR_EL2 but
516 * should never be listed below, because the MPIDR should only be set
517 * once, before running the VCPU, and never changed later.
523 case CSSELR_EL1: write_sysreg_s(val, SYS_CSSELR_EL1); break;
524 case SCTLR_EL1: write_sysreg_s(val, SYS_SCTLR_EL12); break;
525 case CPACR_EL1: write_sysreg_s(val, SYS_CPACR_EL12); break;
526 case TTBR0_EL1: write_sysreg_s(val, SYS_TTBR0_EL12); break;
527 case TTBR1_EL1: write_sysreg_s(val, SYS_TTBR1_EL12); break;
528 case TCR_EL1: write_sysreg_s(val, SYS_TCR_EL12); break;
529 case ESR_EL1: write_sysreg_s(val, SYS_ESR_EL12); break;
530 case AFSR0_EL1: write_sysreg_s(val, SYS_AFSR0_EL12); break;
531 case AFSR1_EL1: write_sysreg_s(val, SYS_AFSR1_EL12); break;
532 case FAR_EL1: write_sysreg_s(val, SYS_FAR_EL12); break;
533 case MAIR_EL1: write_sysreg_s(val, SYS_MAIR_EL12); break;
534 case VBAR_EL1: write_sysreg_s(val, SYS_VBAR_EL12); break;
535 case CONTEXTIDR_EL1: write_sysreg_s(val, SYS_CONTEXTIDR_EL12);break;
536 case TPIDR_EL0: write_sysreg_s(val, SYS_TPIDR_EL0); break;
537 case TPIDRRO_EL0: write_sysreg_s(val, SYS_TPIDRRO_EL0); break;
538 case TPIDR_EL1: write_sysreg_s(val, SYS_TPIDR_EL1); break;
539 case AMAIR_EL1: write_sysreg_s(val, SYS_AMAIR_EL12); break;
540 case CNTKCTL_EL1: write_sysreg_s(val, SYS_CNTKCTL_EL12); break;
541 case ELR_EL1: write_sysreg_s(val, SYS_ELR_EL12); break;
542 case PAR_EL1: write_sysreg_s(val, SYS_PAR_EL1); break;
543 case DACR32_EL2: write_sysreg_s(val, SYS_DACR32_EL2); break;
544 case IFSR32_EL2: write_sysreg_s(val, SYS_IFSR32_EL2); break;
545 case DBGVCR32_EL2: write_sysreg_s(val, SYS_DBGVCR32_EL2); break;
546 default: return false;
553 ulong remote_tlb_flush;
556 struct kvm_vcpu_stat {
557 u64 halt_successful_poll;
558 u64 halt_attempted_poll;
559 u64 halt_poll_success_ns;
560 u64 halt_poll_fail_ns;
561 u64 halt_poll_invalid;
567 u64 mmio_exit_kernel;
571 int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init);
572 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
573 int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
574 int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
575 int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
577 unsigned long kvm_arm_num_sys_reg_descs(struct kvm_vcpu *vcpu);
578 int kvm_arm_copy_sys_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
579 int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
580 int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
582 int __kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu,
583 struct kvm_vcpu_events *events);
585 int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
586 struct kvm_vcpu_events *events);
588 #define KVM_ARCH_WANT_MMU_NOTIFIER
590 void kvm_arm_halt_guest(struct kvm *kvm);
591 void kvm_arm_resume_guest(struct kvm *kvm);
593 #define kvm_call_hyp_nvhe(f, ...) \
595 struct arm_smccc_res res; \
597 arm_smccc_1_1_hvc(KVM_HOST_SMCCC_FUNC(f), \
598 ##__VA_ARGS__, &res); \
599 WARN_ON(res.a0 != SMCCC_RET_SUCCESS); \
605 * The couple of isb() below are there to guarantee the same behaviour
606 * on VHE as on !VHE, where the eret to EL1 acts as a context
607 * synchronization event.
609 #define kvm_call_hyp(f, ...) \
615 kvm_call_hyp_nvhe(f, ##__VA_ARGS__); \
619 #define kvm_call_hyp_ret(f, ...) \
621 typeof(f(__VA_ARGS__)) ret; \
624 ret = f(__VA_ARGS__); \
627 ret = kvm_call_hyp_nvhe(f, ##__VA_ARGS__); \
633 void force_vm_exit(const cpumask_t *mask);
634 void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot);
636 int handle_exit(struct kvm_vcpu *vcpu, int exception_index);
637 void handle_exit_early(struct kvm_vcpu *vcpu, int exception_index);
639 int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu);
640 int kvm_handle_cp14_32(struct kvm_vcpu *vcpu);
641 int kvm_handle_cp14_64(struct kvm_vcpu *vcpu);
642 int kvm_handle_cp15_32(struct kvm_vcpu *vcpu);
643 int kvm_handle_cp15_64(struct kvm_vcpu *vcpu);
644 int kvm_handle_sys_reg(struct kvm_vcpu *vcpu);
646 void kvm_reset_sys_regs(struct kvm_vcpu *vcpu);
648 void kvm_sys_reg_table_init(void);
651 void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data);
652 unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len);
654 int kvm_handle_mmio_return(struct kvm_vcpu *vcpu);
655 int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa);
657 int kvm_perf_init(void);
658 int kvm_perf_teardown(void);
660 long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu);
661 gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu);
662 void kvm_update_stolen_time(struct kvm_vcpu *vcpu);
664 bool kvm_arm_pvtime_supported(void);
665 int kvm_arm_pvtime_set_attr(struct kvm_vcpu *vcpu,
666 struct kvm_device_attr *attr);
667 int kvm_arm_pvtime_get_attr(struct kvm_vcpu *vcpu,
668 struct kvm_device_attr *attr);
669 int kvm_arm_pvtime_has_attr(struct kvm_vcpu *vcpu,
670 struct kvm_device_attr *attr);
672 static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch)
674 vcpu_arch->steal.base = GPA_INVALID;
677 static inline bool kvm_arm_is_pvtime_enabled(struct kvm_vcpu_arch *vcpu_arch)
679 return (vcpu_arch->steal.base != GPA_INVALID);
682 void kvm_set_sei_esr(struct kvm_vcpu *vcpu, u64 syndrome);
684 struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr);
686 DECLARE_KVM_HYP_PER_CPU(struct kvm_host_data, kvm_host_data);
688 static inline void kvm_init_host_cpu_context(struct kvm_cpu_context *cpu_ctxt)
690 /* The host's MPIDR is immutable, so let's set it up at boot time */
691 ctxt_sys_reg(cpu_ctxt, MPIDR_EL1) = read_cpuid_mpidr();
694 static inline bool kvm_arch_requires_vhe(void)
697 * The Arm architecture specifies that implementation of SVE
698 * requires VHE also to be implemented. The KVM code for arm64
699 * relies on this when SVE is present:
701 if (system_supports_sve())
707 void kvm_arm_vcpu_ptrauth_trap(struct kvm_vcpu *vcpu);
709 static inline void kvm_arch_hardware_unsetup(void) {}
710 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
711 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
712 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
714 void kvm_arm_init_debug(void);
715 void kvm_arm_setup_debug(struct kvm_vcpu *vcpu);
716 void kvm_arm_clear_debug(struct kvm_vcpu *vcpu);
717 void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu);
718 int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
719 struct kvm_device_attr *attr);
720 int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
721 struct kvm_device_attr *attr);
722 int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
723 struct kvm_device_attr *attr);
725 /* Guest/host FPSIMD coordination helpers */
726 int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu);
727 void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu);
728 void kvm_arch_vcpu_ctxsync_fp(struct kvm_vcpu *vcpu);
729 void kvm_arch_vcpu_put_fp(struct kvm_vcpu *vcpu);
731 static inline bool kvm_pmu_counter_deferred(struct perf_event_attr *attr)
733 return (!has_vhe() && attr->exclude_host);
736 #ifdef CONFIG_KVM /* Avoid conflicts with core headers if CONFIG_KVM=n */
737 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
739 return kvm_arch_vcpu_run_map_fp(vcpu);
742 void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr);
743 void kvm_clr_pmu_events(u32 clr);
745 void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu);
746 void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu);
748 static inline void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr) {}
749 static inline void kvm_clr_pmu_events(u32 clr) {}
752 void kvm_vcpu_load_sysregs_vhe(struct kvm_vcpu *vcpu);
753 void kvm_vcpu_put_sysregs_vhe(struct kvm_vcpu *vcpu);
755 int kvm_set_ipa_limit(void);
757 #define __KVM_HAVE_ARCH_VM_ALLOC
758 struct kvm *kvm_arch_alloc_vm(void);
759 void kvm_arch_free_vm(struct kvm *kvm);
761 int kvm_arm_setup_stage2(struct kvm *kvm, unsigned long type);
763 int kvm_arm_vcpu_finalize(struct kvm_vcpu *vcpu, int feature);
764 bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu);
766 #define kvm_arm_vcpu_sve_finalized(vcpu) \
767 ((vcpu)->arch.flags & KVM_ARM64_VCPU_SVE_FINALIZED)
769 #define kvm_vcpu_has_pmu(vcpu) \
770 (test_bit(KVM_ARM_VCPU_PMU_V3, (vcpu)->arch.features))
772 int kvm_trng_call(struct kvm_vcpu *vcpu);
774 #endif /* __ARM64_KVM_HOST_H__ */