[PATCHv3 8/8] KVM: SVM: Enable VNMI feature

From: Santosh Shukla
Date: Wed Aug 10 2022 - 02:18:10 EST


Enable the NMI virtualization (V_NMI_ENABLE) in the VMCB interrupt
control when the vnmi module parameter is set.

Signed-off-by: Santosh Shukla <santosh.shukla@xxxxxxx>
---
arch/x86/kvm/svm/svm.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index c9636e033782..eefb4d5428c4 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1309,6 +1309,9 @@ static void init_vmcb(struct kvm_vcpu *vcpu)
if (kvm_vcpu_apicv_active(vcpu))
avic_init_vmcb(svm, vmcb);

+ if (vnmi)
+ svm->vmcb->control.int_ctl |= V_NMI_ENABLE;
+
if (vgif) {
svm_clr_intercept(svm, INTERCEPT_STGI);
svm_clr_intercept(svm, INTERCEPT_CLGI);
--
2.25.1