Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755307AbbGQRBy (ORCPT ); Fri, 17 Jul 2015 13:01:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36965 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754215AbbGQQ5g (ORCPT ); Fri, 17 Jul 2015 12:57:36 -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 08/21] x86/paravirt: Align paravirt thunk functions at 16-byte boundaries Date: Fri, 17 Jul 2015 11:47:24 -0500 Message-Id: <549744692489efebebb40dd98809a6ab9762f5e2.1437150175.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: 1117 Lines: 30 Paravirt thunk functions aren't aligned, which can impact performance and is inconsistent with gcc-generated functions. Align them at 16-byte boundaries to be consistent with gcc functions. Signed-off-by: Josh Poimboeuf --- arch/x86/include/asm/paravirt.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 2545f3e..5dcbf17 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -778,6 +778,7 @@ static __always_inline void __ticket_unlock_kick(struct arch_spinlock *lock, extern typeof(func) __raw_callee_save_##func; \ \ asm(".pushsection .text;" \ + ".align 16;" \ ".globl " PV_THUNK_NAME(func) ";" \ ".type " PV_THUNK_NAME(func) ", @function;" \ PV_THUNK_NAME(func) ":" \ -- 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/