xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: nSVM: Move SMI vmexit handling to svm_check_nested_events()

Browse Source 
Unlike VMX, SVM allows a hypervisor to take a SMI vmexit without having
any special SMM-monitor enablement sequence.  Therefore, it has to be
handled like interrupts and NMIs.  Check for an unblocked SMI in
svm_check_nested_events() so that pending SMIs are correctly prioritized
over IRQs and NMIs when the latter events will trigger VM-Exit.

Note that there is no need to test explicitly for SMI vmexits, because
guests always runs outside SMM and therefore can never get an SMI while
they are blocked.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2020-04-23 08:17:28 -04:00
parent bbdad0b5a7
commit 55714cddbf
3 changed files with 21 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kvm/svm/svm.h
View File

@@ -378,6 +378,11 @@ static inline bool svm_nested_virtualize_tpr(struct kvm_vcpu *vcpu)
return is_guest_mode(vcpu) && (vcpu->arch.hflags & HF_VINTR_MASK);
}
static inline bool nested_exit_on_smi(struct vcpu_svm *svm)
{
return (svm->nested.intercept & (1ULL << INTERCEPT_SMI));
}
static inline bool nested_exit_on_nmi(struct vcpu_svm *svm)
{
return (svm->nested.intercept & (1ULL << INTERCEPT_NMI));