From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756040AbaEGMdI (ORCPT ); Wed, 7 May 2014 08:33:08 -0400 Received: from mailgw12.technion.ac.il ([132.68.225.12]:24967 "EHLO mailgw12.technion.ac.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750810AbaEGMdD (ORCPT ); Wed, 7 May 2014 08:33:03 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AisCAKsmalOERCABjGdsb2JhbABayUUBgRoWDgEBASc8giYBBSdSEFFXBxKIQclKhXEXjWYIZAeEPwSKApo1izKBagkX X-IPAS-Result: AisCAKsmalOERCABjGdsb2JhbABayUUBgRoWDgEBASc8giYBBSdSEFFXBxKIQclKhXEXjWYIZAeEPwSKApo1izKBagkX X-IronPort-AV: E=Sophos;i="4.97,1003,1389736800"; d="scan'208";a="105236353" From: Nadav Amit To: mtosatti@redhat.com, pbonzini@redhat.com, hpa@zytor.com Cc: gleb@kernel.org, tglx@linutronix.de, mingo@redhat.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Nadav Amit Subject: [PATCH 2/5] KVM: vmx: handle_dr does not handle RSP correctly Date: Wed, 7 May 2014 15:32:49 +0300 Message-Id: <1399465972-4026-3-git-send-email-namit@cs.technion.ac.il> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1399465972-4026-1-git-send-email-namit@cs.technion.ac.il> References: <1399465972-4026-1-git-send-email-namit@cs.technion.ac.il> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The RSP register is not automatically cached, causing mov DR instruction with RSP to fail. Instead the regular register accessing interface should be used. Signed-off-by: Nadav Amit --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 72b8012..0e2793f 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5142,7 +5142,7 @@ static int handle_dr(struct kvm_vcpu *vcpu) return 1; kvm_register_write(vcpu, reg, val); } else - if (kvm_set_dr(vcpu, dr, vcpu->arch.regs[reg])) + if (kvm_set_dr(vcpu, dr, kvm_register_read(vcpu, reg))) return 1; skip_emulated_instruction(vcpu); -- 1.9.1