Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753996AbbGQQ5a (ORCPT ); Fri, 17 Jul 2015 12:57:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46096 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753334AbbGQQ52 (ORCPT ); Fri, 17 Jul 2015 12:57:28 -0400 From: Josh Poimboeuf To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: Michal Marek , Peter Zijlstra , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Andi Kleen , Pedro Alves , x86@kernel.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 02/21] stackvalidate: Add C version of STACKVALIDATE_IGNORE_INSN Date: Fri, 17 Jul 2015 11:47:18 -0500 Message-Id: <3696c19542f8a29d66735b894d5414f6a9860c98.1437150175.git.jpoimboe@redhat.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1105 Lines: 36 Add a C inline asm string version of the STACKVALIDATE_IGNORE_INSN macro which tells stackvalidate to ignore the subsequent instruction. Signed-off-by: Josh Poimboeuf --- arch/x86/include/asm/stackvalidate.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/include/asm/stackvalidate.h b/arch/x86/include/asm/stackvalidate.h index 2d23c23..dac935c 100644 --- a/arch/x86/include/asm/stackvalidate.h +++ b/arch/x86/include/asm/stackvalidate.h @@ -23,6 +23,15 @@ .endif .endm +#else /* !__ASSEMBLY__ */ + +#define STACKVALIDATE_IGNORE_INSN \ + ".Ltemp" __stringify(__LINE__) ":;" \ + ".pushsection __stackvalidate_ignore_insn, \"a\";" \ + _ASM_ALIGN ";" \ + ".long .Ltemp" __stringify(__LINE__) " - .;" \ + ".popsection;" + #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_STACKVALIDATE_H */ -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/