From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030755AbWKORvY (ORCPT ); Wed, 15 Nov 2006 12:51:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030766AbWKORvY (ORCPT ); Wed, 15 Nov 2006 12:51:24 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:43728 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1030755AbWKORvX (ORCPT ); Wed, 15 Nov 2006 12:51:23 -0500 Date: Wed, 15 Nov 2006 18:49:57 +0100 From: Ingo Molnar To: Eric Dumazet Cc: Andi Kleen , akpm@osdl.org, Arjan van de Ven , Jeremy Fitzhardinge , linux-kernel@vger.kernel.org Subject: Re: [PATCH] i386-pda UP optimization Message-ID: <20061115174957.GA27827@elte.hu> References: <1158046540.2992.5.camel@laptopd505.fenrus.org> <20061115172003.GA20403@elte.hu> <200611151824.36198.ak@suse.de> <200611151846.31109.dada1@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200611151846.31109.dada1@cosmosbay.com> User-Agent: Mutt/1.4.2.2i X-ELTE-SpamScore: -4.4 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-4.4 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 1.5 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Eric Dumazet wrote: > Machine boots but freeze when init starts. Any idea ? probably caused by this: > +# define GET_CPU_NUM(reg) > #define FIXUP_ESPFIX_STACK \ > /* since we are on a wrong stack, we cant make it a C code :( */ \ > - movl %gs:PDA_cpu, %ebx; \ > + GET_CPU_NUM(%ebx) \ > PER_CPU(cpu_gdt_descr, %ebx); \ > movl GDS_address(%ebx), %ebx; \ %ebx very definitely wants to have a current CPU number loaded ;) Pick it up from the task struct. Ingo