diff options
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 3 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/arm64/kvm/handle_exit.c | 18 | ||||
| -rw-r--r-- | virt/kvm/arm/arm.c | 3 |
4 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index b86fc4162539..acbf9ec7b396 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -238,6 +238,9 @@ int kvm_arm_coproc_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, int exception_index); +static inline void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run, + int exception_index) {} + static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr, unsigned long hyp_stack_ptr, unsigned long vector_ptr) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 84fcb2a896a1..abcfd164e690 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -347,6 +347,8 @@ void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot); int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, int exception_index); +void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run, + int exception_index); int kvm_perf_init(void); int kvm_perf_teardown(void); diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index 304203fa9e33..6a5a5db4292f 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -29,12 +29,19 @@ #include <asm/kvm_mmu.h> #include <asm/kvm_psci.h> #include <asm/debug-monitors.h> +#include <asm/traps.h> #define CREATE_TRACE_POINTS #include "trace.h" typedef int (*exit_handle_fn)(struct kvm_vcpu *, struct kvm_run *); +static void kvm_handle_guest_serror(struct kvm_vcpu *vcpu, u32 esr) +{ + if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(NULL, esr)) + kvm_inject_vabt(vcpu); +} + static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run) { int ret; @@ -252,7 +259,6 @@ int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, case ARM_EXCEPTION_IRQ: return 1; case ARM_EXCEPTION_EL1_SERROR: - kvm_inject_vabt(vcpu); /* We may still need to return for single-step */ if (!(*vcpu_cpsr(vcpu) & DBG_SPSR_SS) && kvm_arm_handle_step_debug(vcpu, run)) @@ -275,3 +281,13 @@ int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, return 0; } } + +/* For exit types that need handling before we can be preempted */ +void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run, + int exception_index) +{ + exception_index = ARM_EXCEPTION_CODE(exception_index); + + if (exception_index == ARM_EXCEPTION_EL1_SERROR) + kvm_handle_guest_serror(vcpu, kvm_vcpu_get_hsr(vcpu)); +} diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 38e81631fc91..15bf026eb182 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -763,6 +763,9 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) guest_exit(); trace_kvm_exit(ret, kvm_vcpu_trap_get_class(vcpu), *vcpu_pc(vcpu)); + /* Exit types that need handling before we can be preempted */ + handle_exit_early(vcpu, run, ret); + preempt_enable(); ret = handle_exit(vcpu, run, ret); |