From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755393AbZB0S3X (ORCPT ); Fri, 27 Feb 2009 13:29:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753738AbZB0S3N (ORCPT ); Fri, 27 Feb 2009 13:29:13 -0500 Received: from gateway-1237.mvista.com ([63.81.120.158]:64765 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754163AbZB0S3L (ORCPT ); Fri, 27 Feb 2009 13:29:11 -0500 Message-ID: <49A830F5.7090906@ct.jp.nec.com> Date: Fri, 27 Feb 2009 10:29:09 -0800 From: Hiroshi Shimamoto User-Agent: Thunderbird 2.0.0.19 (Windows/20081209) MIME-Version: 1.0 To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" Cc: linux-kernel@vger.kernel.org Subject: [PATCH 3/5] x86: signal: use 16 bytes boundary for rt_sigframe References: <49A83078.3020207@ct.jp.nec.com> In-Reply-To: <49A83078.3020207@ct.jp.nec.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hiroshi Shimamoto Impact: cleanup Supporting xsave/xrestore introduces 64 bytes boundary for save_i387_xstate(). 16 bytes boundary is OK for rt_sigframe. Signed-off-by: Hiroshi Shimamoto --- arch/x86/kernel/signal.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 5ed4533..951aa60 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -409,15 +409,13 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size, if (used_math()) { sp -= sig_xstate_size; *fpstate = (void __user *)round_down(sp, 64); + if (save_i387_xstate(*fpstate) < 0) return (void __user *) -1L; - - sp -= frame_size; - return (void __user *)round_down(sp, 16) - 8; } sp -= frame_size; - return (void __user *)round_down(sp, 64) - 8; + return (void __user *)round_down(sp, 16) - 8; } static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, -- 1.6.1.2