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KVM: SVM: Analyze is_guest_mode() in svm_vcpu_run()

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Analyze is_guest_mode() in svm_vcpu_run() instead of svm_exit_handlers_fastpath()
in conformity with VMX version.

Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1600066548-4343-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wanpeng Li 2020-09-14 14:55:48 +08:00 committed by Paolo Bonzini
parent 1a5488ef0d
commit 4e810adb53
1 changed files with 6 additions and 5 deletions
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11
arch/x86/kvm/svm/svm.c
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@ -3393,8 +3393,7 @@ static void svm_cancel_injection(struct kvm_vcpu *vcpu)
static fastpath_t svm_exit_handlers_fastpath(struct kvm_vcpu *vcpu)
{
if (!is_guest_mode(vcpu) &&
to_svm(vcpu)->vmcb->control.exit_code == SVM_EXIT_MSR &&
if (to_svm(vcpu)->vmcb->control.exit_code == SVM_EXIT_MSR &&
to_svm(vcpu)->vmcb->control.exit_info_1)
return handle_fastpath_set_msr_irqoff(vcpu);
@ -3459,7 +3458,6 @@ static noinstr void svm_vcpu_enter_exit(struct kvm_vcpu *vcpu,
static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
{
fastpath_t exit_fastpath;
struct vcpu_svm *svm = to_svm(vcpu);
svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX];
@ -3580,8 +3578,11 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
svm_handle_mce(svm);
svm_complete_interrupts(svm);
exit_fastpath = svm_exit_handlers_fastpath(vcpu);
return exit_fastpath;
if (is_guest_mode(vcpu))
return EXIT_FASTPATH_NONE;
return svm_exit_handlers_fastpath(vcpu);
}
static void svm_load_mmu_pgd(struct kvm_vcpu *vcpu, unsigned long root,