From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: [PATCH] KVM: nVMX: Clear segment cache after switching between L1 and L2 Date: Sat, 23 Feb 2013 22:35:37 +0100 Message-ID: <51293629.7050605@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: kvm , Nadav Har'El , "Nakajima, Jun" To: Marcelo Tosatti , Gleb Natapov Return-path: Received: from mout.web.de ([212.227.17.12]:54423 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759351Ab3BWVfn (ORCPT ); Sat, 23 Feb 2013 16:35:43 -0500 Sender: kvm-owner@vger.kernel.org List-ID: From: Jan Kiszka Switching the VMCS obviously invalidates what may have been cached about the guest segments. Signed-off-by: Jan Kiszka --- Probably, the missing invalidations are harmless ATM, but you never know. arch/x86/kvm/vmx.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 94f3b66..d45f0e0 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -7236,6 +7236,8 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch) vcpu->cpu = cpu; put_cpu(); + vmx_segment_cache_clear(vmx); + vmcs12->launch_state = 1; prepare_vmcs02(vcpu, vmcs12); @@ -7504,6 +7506,8 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu) vcpu->cpu = cpu; put_cpu(); + vmx_segment_cache_clear(vmx); + /* if no vmcs02 cache requested, remove the one we used */ if (VMCS02_POOL_SIZE == 0) nested_free_vmcs02(vmx, vmx->nested.current_vmptr); -- 1.7.3.4