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| author | Paolo Bonzini <pbonzini@redhat.com> | 2022-10-27 19:44:28 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-11-09 20:31:21 +0300 |
| commit | 85672346a707d8e4d5657279dac6b356e1edf24a (patch) | |
| tree | debddbfe0587fa32c3f1ccd60a651a587a23083b /arch/x86/kvm/x86.c | |
| parent | cf7316d0361c5d3289611402b5ac0c64c918b20b (diff) | |
| download | linux-85672346a707d8e4d5657279dac6b356e1edf24a.tar.xz | |
KVM: zero output of KVM_GET_VCPU_EVENTS before filling in the struct
This allows making some fields optional, as will be the case soon
for SMM-related data.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 73c32030d514..84aa51613e4f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5057,16 +5057,15 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu, ex->pending && ex->has_payload) kvm_deliver_exception_payload(vcpu, ex); + memset(events, 0, sizeof(*events)); + /* * The API doesn't provide the instruction length for software * exceptions, so don't report them. As long as the guest RIP * isn't advanced, we should expect to encounter the exception * again. */ - if (kvm_exception_is_soft(ex->vector)) { - events->exception.injected = 0; - events->exception.pending = 0; - } else { + if (!kvm_exception_is_soft(ex->vector)) { events->exception.injected = ex->injected; events->exception.pending = ex->pending; /* @@ -5086,15 +5085,13 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu, events->interrupt.injected = vcpu->arch.interrupt.injected && !vcpu->arch.interrupt.soft; events->interrupt.nr = vcpu->arch.interrupt.nr; - events->interrupt.soft = 0; events->interrupt.shadow = static_call(kvm_x86_get_interrupt_shadow)(vcpu); events->nmi.injected = vcpu->arch.nmi_injected; events->nmi.pending = vcpu->arch.nmi_pending != 0; events->nmi.masked = static_call(kvm_x86_get_nmi_mask)(vcpu); - events->nmi.pad = 0; - events->sipi_vector = 0; /* never valid when reporting to user space */ + /* events->sipi_vector is never valid when reporting to user space */ events->smi.smm = is_smm(vcpu); events->smi.pending = vcpu->arch.smi_pending; @@ -5111,8 +5108,6 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu, events->triple_fault.pending = kvm_test_request(KVM_REQ_TRIPLE_FAULT, vcpu); events->flags |= KVM_VCPUEVENT_VALID_TRIPLE_FAULT; } - - memset(&events->reserved, 0, sizeof(events->reserved)); } static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu, |