From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51016 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932072AbbLGMTe (ORCPT ); Mon, 7 Dec 2015 07:19:34 -0500 Subject: Patch "arm64: Fix compat register mappings" has been added to the 4.3-stable tree To: robin.murphy@arm.com, catalin.marinas@arm.com, gregkh@linuxfoundation.org, will.deacon@arm.com Cc: , From: Date: Mon, 07 Dec 2015 00:30:59 -0800 Message-ID: <144947705953227@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled arm64: Fix compat register mappings to the 4.3-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-fix-compat-register-mappings.patch and it can be found in the queue-4.3 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 5accd17d0eb523350c9ef754d655e379c9bb93b3 Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Thu, 22 Oct 2015 15:41:52 +0100 Subject: arm64: Fix compat register mappings From: Robin Murphy commit 5accd17d0eb523350c9ef754d655e379c9bb93b3 upstream. For reasons not entirely apparent, but now enshrined in history, the architectural mapping of AArch32 banked registers to AArch64 registers actually orders SP_ and LR_ backwards compared to the intuitive r13/r14 order, for all modes except FIQ. Fix the compat__ macros accordingly, in the hope of avoiding subtle bugs with KVM and AArch32 guests. Signed-off-by: Robin Murphy Acked-by: Will Deacon Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman --- arch/arm64/include/asm/ptrace.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -83,14 +83,14 @@ #define compat_sp regs[13] #define compat_lr regs[14] #define compat_sp_hyp regs[15] -#define compat_sp_irq regs[16] -#define compat_lr_irq regs[17] -#define compat_sp_svc regs[18] -#define compat_lr_svc regs[19] -#define compat_sp_abt regs[20] -#define compat_lr_abt regs[21] -#define compat_sp_und regs[22] -#define compat_lr_und regs[23] +#define compat_lr_irq regs[16] +#define compat_sp_irq regs[17] +#define compat_lr_svc regs[18] +#define compat_sp_svc regs[19] +#define compat_lr_abt regs[20] +#define compat_sp_abt regs[21] +#define compat_lr_und regs[22] +#define compat_sp_und regs[23] #define compat_r8_fiq regs[24] #define compat_r9_fiq regs[25] #define compat_r10_fiq regs[26] Patches currently in stable-queue which might be from robin.murphy@arm.com are queue-4.3/arm64-fix-compat-register-mappings.patch