From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754419AbYGIQxm (ORCPT ); Wed, 9 Jul 2008 12:53:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752383AbYGIQvg (ORCPT ); Wed, 9 Jul 2008 12:51:36 -0400 Received: from relay1.sgi.com ([192.48.171.29]:53206 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751959AbYGIQvb (ORCPT ); Wed, 9 Jul 2008 12:51:31 -0400 Message-Id: <20080709165130.815485000@polaris-admin.engr.sgi.com> References: <20080709165129.292635000@polaris-admin.engr.sgi.com> User-Agent: quilt/0.46-1 Date: Wed, 09 Jul 2008 09:51:40 -0700 From: Mike Travis To: Jeremy Fitzhardinge Cc: Ingo Molnar , Andrew Morton , "Eric W. Biederman" , "H. Peter Anvin" , Christoph Lameter , Jack Steiner , linux-kernel@vger.kernel.org Subject: [RFC 11/15] x86_64: Replace xxx_pda() operations in include_asm-x86_stackprotector_h Content-Disposition: inline; filename=incl_pda_ops_include_asm-x86_stackprotector_h Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * It is now possible to use percpu operations for pda access since the pda is in the percpu area. Drop the pda operations. Thus: read_pda --> x86_read_percpu write_pda --> x86_write_percpu add_pda (+1) --> x86_inc_percpu or_pda --> x86_or_percpu Based on linux-2.6.tip/master Signed-off-by: Christoph Lameter Signed-off-by: Mike Travis --- include/asm-x86/stackprotector.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- linux-2.6.tip.orig/include/asm-x86/stackprotector.h 2008-07-01 10:41:33.000000000 -0700 +++ linux-2.6.tip/include/asm-x86/stackprotector.h 2008-07-01 10:49:14.920355480 -0700 @@ -32,7 +32,7 @@ static __always_inline void boot_init_st canary += tsc + (tsc << 32UL); current->stack_canary = canary; - write_pda(stack_canary, canary); + x86_write_percpu(pda.stack_canary, canary); } #endif --