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| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-01-29 19:12:35 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-02-20 22:48:27 +0100 |
| commit | b4b65b5642d6edd50e35a159f20e793dc478d686 (patch) | |
| tree | 8febd9274be811ddf54782464a6129a3fa238485 /arch/x86 | |
| parent | 81b016676e1c8f58027bd4d2b1d8a981776b36fe (diff) | |
| download | linux-0-day-b4b65b5642d6edd50e35a159f20e793dc478d686.tar.gz linux-0-day-b4b65b5642d6edd50e35a159f20e793dc478d686.tar.xz | |
KVM: x86: cleanup freeing of nested state
Ensure that the VCPU free path goes through vmx_leave_nested and
thus nested_vmx_vmexit, so that the cancellation of the timer does
not have to be in free_nested. In addition, because some paths through
nested_vmx_vmexit do not go through sync_vmcs12, the cancellation of
the timer is moved there.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 12 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 1 |
2 files changed, 6 insertions, 7 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index be9b2c8fd32ec..523d30e935e14 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -211,7 +211,6 @@ static void free_nested(struct kvm_vcpu *vcpu) if (!vmx->nested.vmxon && !vmx->nested.smm.vmxon) return; - hrtimer_cancel(&vmx->nested.preemption_timer); vmx->nested.vmxon = false; vmx->nested.smm.vmxon = false; free_vpid(vmx->nested.vpid02); @@ -274,6 +273,7 @@ static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs) void nested_vmx_free_vcpu(struct kvm_vcpu *vcpu) { vcpu_load(vcpu); + vmx_leave_nested(vcpu); vmx_switch_vmcs(vcpu, &to_vmx(vcpu)->vmcs01); free_nested(vcpu); vcpu_put(vcpu); @@ -3438,13 +3438,10 @@ static void sync_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) else vmcs12->guest_activity_state = GUEST_ACTIVITY_ACTIVE; - if (nested_cpu_has_preemption_timer(vmcs12)) { - if (vmcs12->vm_exit_controls & - VM_EXIT_SAVE_VMX_PREEMPTION_TIMER) + if (nested_cpu_has_preemption_timer(vmcs12) && + vmcs12->vm_exit_controls & VM_EXIT_SAVE_VMX_PREEMPTION_TIMER) vmcs12->vmx_preemption_timer_value = vmx_get_preemption_timer_value(vcpu); - hrtimer_cancel(&to_vmx(vcpu)->nested.preemption_timer); - } /* * In some cases (usually, nested EPT), L2 is allowed to change its @@ -3852,6 +3849,9 @@ void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, leave_guest_mode(vcpu); + if (nested_cpu_has_preemption_timer(vmcs12)) + hrtimer_cancel(&to_vmx(vcpu)->nested.preemption_timer); + if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING) vcpu->arch.tsc_offset -= vmcs12->tsc_offset; diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index c81dc632464a6..de6a9e7c64719 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6546,7 +6546,6 @@ static void vmx_free_vcpu(struct kvm_vcpu *vcpu) if (enable_pml) vmx_destroy_pml_buffer(vmx); free_vpid(vmx->vpid); - leave_guest_mode(vcpu); nested_vmx_free_vcpu(vcpu); free_loaded_vmcs(vmx->loaded_vmcs); kfree(vmx->guest_msrs); |