KVM: VMX: Do not perform emulation for INVD intercept

The INVD instruction is emulated as a NOP, just skip the instruction
instead.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <addd41be2fbf50f5f4059e990a2a0cff182d2136.1600972918.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 1eeafec..dc74bb6 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5127,7 +5127,8 @@ static int handle_vmcall(struct kvm_vcpu *vcpu)
 
 static int handle_invd(struct kvm_vcpu *vcpu)
 {
-       return kvm_emulate_instruction(vcpu, 0);
+       /* Treat an INVD instruction as a NOP and just skip it. */
+       return kvm_skip_emulated_instruction(vcpu);
 }
 
 static int handle_invlpg(struct kvm_vcpu *vcpu)