From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762795AbXFQKEP (ORCPT ); Sun, 17 Jun 2007 06:04:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759829AbXFQJpz (ORCPT ); Sun, 17 Jun 2007 05:45:55 -0400 Received: from il.qumranet.com ([82.166.9.18]:55167 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758736AbXFQJop (ORCPT ); Sun, 17 Jun 2007 05:44:45 -0400 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Nitin A Kamble , Avi Kivity Subject: [PATCH 24/58] KVM: VMX: Handle #SS faults from real mode Date: Sun, 17 Jun 2007 12:44:05 +0300 Message-Id: <11820734803179-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.0.6 In-Reply-To: <1182073479890-git-send-email-avi@qumranet.com> References: <1182073479890-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Nitin A Kamble Instructions with address size override prefix opcode 0x67 Cause the #SS fault with 0 error code in VM86 mode. Forward them to the emulator. Signed-Off-By: Nitin A Kamble Signed-off-by: Avi Kivity --- drivers/kvm/vmx.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index c4c5535..a05bfa0 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1488,7 +1488,11 @@ static int handle_rmode_exception(struct kvm_vcpu *vcpu, if (!vcpu->rmode.active) return 0; - if (vec == GP_VECTOR && err_code == 0) + /* + * Instruction with address size override prefix opcode 0x67 + * Cause the #SS fault with 0 error code in VM86 mode. + */ + if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) if (emulate_instruction(vcpu, NULL, 0, 0) == EMULATE_DONE) return 1; return 0; -- 1.5.0.6