[PATCH 13/13] KVM: SVM: Enable VNMI feature

From: Maxim Levitsky
Date: Thu Nov 17 2022 - 09:36:07 EST


From: Santosh Shukla <santosh.shukla@xxxxxxx>

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>
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
---
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 c9190a8ee03273..5b61d89c644da6 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1307,6 +1307,9 @@ 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);
--
2.34.3