From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57782 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1034163AbdD3OXt (ORCPT ); Sun, 30 Apr 2017 10:23:49 -0400 Subject: Patch "ARCv2: save r30 on kernel entry as gcc uses it for code-gen" has been added to the 4.9-stable tree To: vgupta@synopsys.com, gregkh@linuxfoundation.org Cc: , From: Date: Sun, 30 Apr 2017 16:11:43 +0200 Message-ID: <149356150318691@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 ARCv2: save r30 on kernel entry as gcc uses it for code-gen to the 4.9-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: arcv2-save-r30-on-kernel-entry-as-gcc-uses-it-for-code-gen.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From ecd43afdbe72017aefe48080631eb625e177ef4d Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Sun, 8 Jan 2017 19:45:48 -0800 Subject: ARCv2: save r30 on kernel entry as gcc uses it for code-gen From: Vineet Gupta commit ecd43afdbe72017aefe48080631eb625e177ef4d upstream. This is not exposed to userspace debugers yet, which can be done independently as a seperate patch ! Signed-off-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman --- arch/arc/include/asm/entry-arcv2.h | 2 ++ arch/arc/include/asm/ptrace.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) --- a/arch/arc/include/asm/entry-arcv2.h +++ b/arch/arc/include/asm/entry-arcv2.h @@ -16,6 +16,7 @@ ; ; Now manually save: r12, sp, fp, gp, r25 + PUSH r30 PUSH r12 ; Saving pt_regs->sp correctly requires some extra work due to the way @@ -72,6 +73,7 @@ POPAX AUX_USER_SP 1: POP r12 + POP r30 .endm --- a/arch/arc/include/asm/ptrace.h +++ b/arch/arc/include/asm/ptrace.h @@ -84,7 +84,7 @@ struct pt_regs { unsigned long fp; unsigned long sp; /* user/kernel sp depending on where we came from */ - unsigned long r12; + unsigned long r12, r30; /*------- Below list auto saved by h/w -----------*/ unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11; Patches currently in stable-queue which might be from vgupta@synopsys.com are queue-4.9/arc-fix-build-error.patch queue-4.9/arcv2-save-r30-on-kernel-entry-as-gcc-uses-it-for-code-gen.patch