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| author |   Haiwei Li <lihaiwei.kernel@gmail.com> | 2020-03-02 20:19:28 +0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-03-02 17:06:52 +0100 |
| commit | aaca21007ba14005feca74a079888c49a9b6f6ac (patch) | |
| tree | 2dfe0c5017266eba723fce760f8fa37cbee3c623 /arch/x86 | |
| parent | KVM: X86: Fix dereference null cpufreq policy (diff) | |
| download | linux-dev-aaca21007ba14005feca74a079888c49a9b6f6ac.tar.xz linux-dev-aaca21007ba14005feca74a079888c49a9b6f6ac.zip | |
KVM: SVM: Fix the svm vmexit code for WRMSR
In svm, exit_code for MSR writes is not EXIT_REASON_MSR_WRITE which
belongs to vmx.
According to amd manual, SVM_EXIT_MSR(7ch) is the exit_code of VMEXIT_MSR
due to RDMSR or WRMSR access to protected MSR. Additionally, the processor
indicates in the VMCB's EXITINFO1 whether a RDMSR(EXITINFO1=0) or
WRMSR(EXITINFO1=1) was intercepted.
Signed-off-by: Haiwei Li <lihaiwei@tencent.com>
Fixes: 1e9e2622a149 ("KVM: VMX: FIXED+PHYSICAL mode single target IPI fastpath", 2019-11-21)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/svm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 24c0b2ba8fb9..91000501756e 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -6312,7 +6312,8 @@ static void svm_handle_exit_irqoff(struct kvm_vcpu *vcpu, enum exit_fastpath_completion *exit_fastpath) { if (!is_guest_mode(vcpu) && - to_svm(vcpu)->vmcb->control.exit_code == EXIT_REASON_MSR_WRITE) + to_svm(vcpu)->vmcb->control.exit_code == SVM_EXIT_MSR && + to_svm(vcpu)->vmcb->control.exit_info_1) *exit_fastpath = handle_fastpath_set_msr_irqoff(vcpu); } |