From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933166Ab2IUUA1 (ORCPT ); Fri, 21 Sep 2012 16:00:27 -0400 Received: from terminus.zytor.com ([198.137.202.10]:50853 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756226Ab2IUUA0 (ORCPT ); Fri, 21 Sep 2012 16:00:26 -0400 Date: Fri, 21 Sep 2012 13:00:15 -0700 From: "tip-bot for H. Peter Anvin" Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <1348256595-29119-5-git-send-email-hpa@linux.intel.com> References: <1348256595-29119-5-git-send-email-hpa@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/smap] x86, alternative: Use .pushsection/.popsection Git-Commit-ID: 9cebed423c84a56b871327dd77e555d1d2186a6b 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 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6 (terminus.zytor.com [127.0.0.1]); Fri, 21 Sep 2012 13:00:20 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 9cebed423c84a56b871327dd77e555d1d2186a6b Gitweb: http://git.kernel.org/tip/9cebed423c84a56b871327dd77e555d1d2186a6b Author: H. Peter Anvin AuthorDate: Fri, 21 Sep 2012 12:43:08 -0700 Committer: H. Peter Anvin CommitDate: Fri, 21 Sep 2012 12:45:25 -0700 x86, alternative: Use .pushsection/.popsection .section/.previous doesn't nest. Use .pushsection/.popsection in so that they can be properly nested. Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/r/1348256595-29119-5-git-send-email-hpa@linux.intel.com --- arch/x86/include/asm/alternative-asm.h | 4 ++-- arch/x86/include/asm/alternative.h | 32 ++++++++++++++++---------------- 2 files changed, 18 insertions(+), 18 deletions(-) diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h index 952bd01..018d29f 100644 --- a/arch/x86/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -5,10 +5,10 @@ #ifdef CONFIG_SMP .macro LOCK_PREFIX 672: lock - .section .smp_locks,"a" + .pushsection .smp_locks,"a" .balign 4 .long 672b - . - .previous + .popsection .endm #else .macro LOCK_PREFIX diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index 7078068..87bc00d 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -29,10 +29,10 @@ #ifdef CONFIG_SMP #define LOCK_PREFIX_HERE \ - ".section .smp_locks,\"a\"\n" \ - ".balign 4\n" \ - ".long 671f - .\n" /* offset */ \ - ".previous\n" \ + ".pushsection .smp_locks,\"a\"\n" \ + ".balign 4\n" \ + ".long 671f - .\n" /* offset */ \ + ".popsection\n" \ "671:" #define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; " @@ -99,30 +99,30 @@ static inline int alternatives_text_reserved(void *start, void *end) /* alternative assembly primitive: */ #define ALTERNATIVE(oldinstr, newinstr, feature) \ OLDINSTR(oldinstr) \ - ".section .altinstructions,\"a\"\n" \ + ".pushsection .altinstructions,\"a\"\n" \ ALTINSTR_ENTRY(feature, 1) \ - ".previous\n" \ - ".section .discard,\"aw\",@progbits\n" \ + ".popsection\n" \ + ".pushsection .discard,\"aw\",@progbits\n" \ DISCARD_ENTRY(1) \ - ".previous\n" \ - ".section .altinstr_replacement, \"ax\"\n" \ + ".popsection\n" \ + ".pushsection .altinstr_replacement, \"ax\"\n" \ ALTINSTR_REPLACEMENT(newinstr, feature, 1) \ - ".previous" + ".popsection" #define ALTERNATIVE_2(oldinstr, newinstr1, feature1, newinstr2, feature2)\ OLDINSTR(oldinstr) \ - ".section .altinstructions,\"a\"\n" \ + ".pushsection .altinstructions,\"a\"\n" \ ALTINSTR_ENTRY(feature1, 1) \ ALTINSTR_ENTRY(feature2, 2) \ - ".previous\n" \ - ".section .discard,\"aw\",@progbits\n" \ + ".popsection\n" \ + ".pushsection .discard,\"aw\",@progbits\n" \ DISCARD_ENTRY(1) \ DISCARD_ENTRY(2) \ - ".previous\n" \ - ".section .altinstr_replacement, \"ax\"\n" \ + ".popsection\n" \ + ".pushsection .altinstr_replacement, \"ax\"\n" \ ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \ ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \ - ".previous" + ".popsection" /* * This must be included *after* the definition of ALTERNATIVE due to