From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757466Ab0BXR7h (ORCPT ); Wed, 24 Feb 2010 12:59:37 -0500 Received: from va3ehsobe005.messaging.microsoft.com ([216.32.180.15]:19425 "EHLO VA3EHSOBE006.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757344Ab0BXR7f (ORCPT ); Wed, 24 Feb 2010 12:59:35 -0500 X-SpamScore: -4 X-BigFish: VPS-4(zz936eMab9bhzz1202hzzz32i87h6bh62h) X-Spam-TCS-SCL: 1:0 X-FB-DOMAIN-IP-MATCH: fail X-WSS-ID: 0KYCXYX-02-PJQ-02 X-M-MSG: From: Joerg Roedel To: Avi Kivity , Marcelo Tosatti CC: Alexander Graf , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 02/11] KVM: SVM: Reset MMU on nested_svm_vmrun for NPT too Date: Wed, 24 Feb 2010 18:59:11 +0100 Message-ID: <1267034360-5907-3-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.7.0 In-Reply-To: <1267034360-5907-1-git-send-email-joerg.roedel@amd.com> References: <1267034360-5907-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 24 Feb 2010 17:59:23.0449 (UTC) FILETIME=[18C29290:01CAB57B] MIME-Version: 1.0 Content-Type: text/plain X-Reverse-DNS: ausb3extmailp02.amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Without resetting the MMU the gva_to_pga function will not work reliably when the vcpu is running in nested context. Signed-off-by: Joerg Roedel --- arch/x86/kvm/svm.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 217b8b0..b821b2f 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1871,10 +1871,12 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm) if (npt_enabled) { svm->vmcb->save.cr3 = nested_vmcb->save.cr3; svm->vcpu.arch.cr3 = nested_vmcb->save.cr3; - } else { + } else kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3); - kvm_mmu_reset_context(&svm->vcpu); - } + + /* Guest paging mode is active - reset mmu */ + kvm_mmu_reset_context(&svm->vcpu); + svm->vmcb->save.cr2 = svm->vcpu.arch.cr2 = nested_vmcb->save.cr2; kvm_register_write(&svm->vcpu, VCPU_REGS_RAX, nested_vmcb->save.rax); kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, nested_vmcb->save.rsp); -- 1.7.0