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KVM: VMX: Use accessor to read vmcs.INTR_INFO when handling exception

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Use vmx_get_intr_info() when grabbing the cached vmcs.INTR_INFO in
handle_exception_nmi() to ensure the cache isn't stale.  Bypassing the
caching accessor doesn't cause any known issues as the cache is always
refreshed by handle_exception_nmi_irqoff(), but the whole point of
adding the proper caching mechanism was to avoid such dependencies.

Fixes: 8791585837 ("KVM: VMX: Cache vmcs.EXIT_INTR_INFO using arch avail_reg flags")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200427171837.22613-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2020-04-27 10:18:37 -07:00 committed by Paolo Bonzini
parent fede8076aa
commit f27ad73a6e
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/vmx/vmx.c
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@ -4705,7 +4705,7 @@ static int handle_exception_nmi(struct kvm_vcpu *vcpu)
u32 vect_info;
vect_info = vmx->idt_vectoring_info;
intr_info = vmx->exit_intr_info;
intr_info = vmx_get_intr_info(vcpu);
if (is_machine_check(intr_info) || is_nmi(intr_info))
return 1; /* handled by handle_exception_nmi_irqoff() */