From patchwork Fri Oct 1 07:06:09 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ian Munsie X-Patchwork-Id: 66329 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from bilbo.ozlabs.org (localhost [127.0.0.1]) by ozlabs.org (Postfix) with ESMTP id 9DEC9B870A for ; Fri, 1 Oct 2010 17:11:25 +1000 (EST) Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp03.au.ibm.com", Issuer "GeoTrust SSL CA" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 4D529B719A for ; Fri, 1 Oct 2010 17:06:31 +1000 (EST) Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [202.81.31.245]) by e23smtp03.au.ibm.com (8.14.4/8.13.1) with ESMTP id o9172YNF001720 for ; Fri, 1 Oct 2010 17:02:34 +1000 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o9176UAa1421390 for ; Fri, 1 Oct 2010 17:06:30 +1000 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o9176U5K024855 for ; Fri, 1 Oct 2010 17:06:30 +1000 Received: from ozlabs.au.ibm.com (ozlabs.au.ibm.com [9.190.163.12]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o9176Uj5024852; Fri, 1 Oct 2010 17:06:30 +1000 Received: from delenn.ozlabs.ibm.com (haven.au.ibm.com [9.190.164.82]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id CD57473A40; Fri, 1 Oct 2010 17:06:29 +1000 (EST) From: "Ian Munsie" To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org Subject: [PATCH 16/18] powerpc: Fix endianness issues in alignment handler Date: Fri, 1 Oct 2010 17:06:09 +1000 Message-Id: <1285916771-18033-17-git-send-email-imunsie@au1.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1285916771-18033-1-git-send-email-imunsie@au1.ibm.com> References: <1285916771-18033-1-git-send-email-imunsie@au1.ibm.com> Cc: Andreas Schwab , Michael Neuling , paulus@samba.org, Ian Munsie , Anton Blanchard X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org From: Ian Munsie This patch reverses the order of the high and low bits in the alignment handler on little endian, which should be enough to fix any alignment exceptions. Please note that this patch is largely untested. Signed-off-by: Ian Munsie --- arch/powerpc/kernel/align.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index 8184ee9..fc357c6 100644 --- a/arch/powerpc/kernel/align.c +++ b/arch/powerpc/kernel/align.c @@ -712,12 +712,22 @@ int fix_alignment(struct pt_regs *regs) double dd; unsigned char v[8]; struct { +#ifdef __LITTLE_ENDIAN__ + int low32; + unsigned hi32; +#else unsigned hi32; int low32; +#endif } x32; struct { +#ifdef __LITTLE_ENDIAN__ + short low16; + unsigned char hi48[6]; +#else unsigned char hi48[6]; short low16; +#endif } x16; } data;