From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933761AbaE3PNA (ORCPT ); Fri, 30 May 2014 11:13:00 -0400 Received: from terminus.zytor.com ([198.137.202.10]:44172 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933738AbaE3PM6 (ORCPT ); Fri, 30 May 2014 11:12:58 -0400 Date: Fri, 30 May 2014 08:12:47 -0700 From: tip-bot for Fenghua Yu Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, fenghua.yu@intel.com, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, fenghua.yu@intel.com, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <1401387164-43416-12-git-send-email-fenghua.yu@intel.com> References: <1401387164-43416-12-git-send-email-fenghua.yu@intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/xsave] x86/xsaves: Clear reserved bits in xsave header Git-Commit-ID: 21e726c4a3625a1038e97795b7aad97109ba7e19 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 21e726c4a3625a1038e97795b7aad97109ba7e19 Gitweb: http://git.kernel.org/tip/21e726c4a3625a1038e97795b7aad97109ba7e19 Author: Fenghua Yu AuthorDate: Thu, 29 May 2014 11:12:39 -0700 Committer: H. Peter Anvin CommitDate: Thu, 29 May 2014 14:33:00 -0700 x86/xsaves: Clear reserved bits in xsave header The reserved bits (128~511) in the xsave header must be zero according to X86 SDM. Clear the bits in this patch. Signed-off-by: Fenghua Yu Link: http://lkml.kernel.org/r/1401387164-43416-12-git-send-email-fenghua.yu@intel.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/i387.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index d5dd808..a9a4229 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -375,7 +375,7 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset, /* * These bits must be zero. */ - xsave_hdr->reserved1[0] = xsave_hdr->reserved1[1] = 0; + memset(xsave_hdr->reserved, 0, 48); return ret; }