lkml.org 
[lkml]   [2020]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 2/2] KVM: VMX: Do not perform emulation for INVD intercept
Date
From: Tom Lendacky <thomas.lendacky@amd.com>

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

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
arch/x86/kvm/vmx/vmx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8646a797b7a8..f8075d3acf9c 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5148,7 +5148,8 @@ 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)
--
2.28.0
\
 
 \ /
  Last update: 2020-09-24 20:43    [W:0.133 / U:0.584 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site