From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 1/6] KVM: SVM: Advance instruction pointer in dr_intercept Date: Wed, 9 Feb 2011 18:29:39 +0100 Message-ID: <1297272584-22689-2-git-send-email-joerg.roedel@amd.com> References: <1297272584-22689-1-git-send-email-joerg.roedel@amd.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , Zachary Amsden , Joerg Roedel To: Avi Kivity , Marcelo Tosatti Return-path: In-Reply-To: <1297272584-22689-1-git-send-email-joerg.roedel@amd.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org In the dr_intercept function a new cpu-feature called decode-assists is implemented and used when available. This code-path does not advance the guest-rip causing the guest to dead-loop over mov-dr instructions. This is fixed by this patch. Signed-off-by: Joerg Roedel --- arch/x86/kvm/svm.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 73a8f1d..bfb4948 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2777,6 +2777,8 @@ static int dr_interception(struct vcpu_svm *svm) kvm_register_write(&svm->vcpu, reg, val); } + skip_emulated_instruction(&svm->vcpu); + return 1; } -- 1.7.1