Bit 12 is undefined in any of the following cases: - If the "NMI exiting" VM-execution control is 1 and the "virtual NMIs" VM-execution control is 0. - If the VM exit sets the valid bit in the IDT-vectoring information field
Signed-off-by: Gleb Natapov <[email protected]> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a1216de..0e06c1c4 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5345,7 +5345,9 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) * There are errata that may cause this bit to not be set: * AAK134, BY25. */ - if (exit_qualification & INTR_INFO_UNBLOCK_NMI) + if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) && + cpu_has_virtual_nmis() && + exit_qualification & INTR_INFO_UNBLOCK_NMI) vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI); gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
