diff options
| -rw-r--r-- | arch/arm/kvm/handle_exit.c | 1 | ||||
| -rw-r--r-- | arch/arm64/kvm/handle_exit.c | 1 | ||||
| -rw-r--r-- | virt/kvm/arm/arm.c | 14 | ||||
| -rw-r--r-- | virt/kvm/arm/psci.c | 1 |
4 files changed, 15 insertions, 2 deletions
diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c index 5fd7968..a2b4f7b 100644 --- a/arch/arm/kvm/handle_exit.c +++ b/arch/arm/kvm/handle_exit.c @@ -72,6 +72,7 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run) trace_kvm_wfx(*vcpu_pc(vcpu), false); vcpu->stat.wfi_exit_stat++; kvm_vcpu_block(vcpu); + kvm_clear_request(KVM_REQ_UNHALT, vcpu); } kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu)); diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index fa1b18e..17d8a16 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -89,6 +89,7 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run) trace_kvm_wfx_arm64(*vcpu_pc(vcpu), false); vcpu->stat.wfi_exit_stat++; kvm_vcpu_block(vcpu); + kvm_clear_request(KVM_REQ_UNHALT, vcpu); } kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu)); diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 3c387fd..1382126 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -546,6 +546,7 @@ void kvm_arm_resume_guest(struct kvm *kvm) kvm_for_each_vcpu(i, vcpu, kvm) { vcpu->arch.pause = false; + kvm_clear_request(KVM_REQ_VCPU_EXIT, vcpu); swake_up(kvm_arch_vcpu_wq(vcpu)); } } @@ -638,8 +639,18 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) run->exit_reason = KVM_EXIT_INTR; } + /* + * Ensure we set mode to IN_GUEST_MODE after we disable + * interrupts and before the final VCPU requests check. + * See the comment in kvm_vcpu_exiting_guest_mode() and + * Documentation/virtual/kvm/vcpu-requests.rst + */ + smp_store_mb(vcpu->mode, IN_GUEST_MODE); + if (ret <= 0 || need_new_vmid_gen(vcpu->kvm) || - vcpu->arch.power_off || vcpu->arch.pause) { + kvm_request_pending(vcpu) || + vcpu->arch.power_off || vcpu->arch.pause) { + vcpu->mode = OUTSIDE_GUEST_MODE; local_irq_enable(); kvm_pmu_sync_hwstate(vcpu); kvm_timer_sync_hwstate(vcpu); @@ -655,7 +666,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) */ trace_kvm_entry(*vcpu_pc(vcpu)); guest_enter_irqoff(); - vcpu->mode = IN_GUEST_MODE; ret = kvm_call_hyp(__kvm_vcpu_run, vcpu); diff --git a/virt/kvm/arm/psci.c b/virt/kvm/arm/psci.c index a08d7a9..f68be2c 100644 --- a/virt/kvm/arm/psci.c +++ b/virt/kvm/arm/psci.c @@ -57,6 +57,7 @@ static unsigned long kvm_psci_vcpu_suspend(struct kvm_vcpu *vcpu) * for KVM will preserve the register state. */ kvm_vcpu_block(vcpu); + kvm_clear_request(KVM_REQ_UNHALT, vcpu); return PSCI_RET_SUCCESS; } |
