From: Adalbert Lazar <alazar@xxxxxxxxxxxxxxx>
Notify the guest introspection tool that the extended control register
has been changed.
Signed-off-by: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8f5cc81c8760..284bb4c740fa 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -765,6 +765,9 @@ static int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
{
+ if (xcr != vcpu->arch.xcr0)
+ kvmi_xsetbv_event(vcpu);
+
if (kvm_x86_ops->get_cpl(vcpu) != 0 ||
__kvm_set_xcr(vcpu, index, xcr)) {
kvm_inject_gp(vcpu, 0);
--
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