Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755502AbYH0K7h (ORCPT ); Wed, 27 Aug 2008 06:59:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754513AbYH0K72 (ORCPT ); Wed, 27 Aug 2008 06:59:28 -0400 Received: from mga05.intel.com ([192.55.52.89]:15351 "EHLO fmsmga101.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754059AbYH0K71 (ORCPT ); Wed, 27 Aug 2008 06:59:27 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.32,278,1217833200"; d="scan'208";a="374039165" Message-ID: <48B53372.5060308@linux.intel.com> Date: Wed, 27 Aug 2008 03:58:58 -0700 From: Arjan van de Ven User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: Paul Mackerras CC: Linus Torvalds , Parag Warudkar , Adrian Bunk , Rusty Russell , "Alan D. Brunelle" , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Andrew Morton , Ingo Molnar , linux-embedded@vger.kernel.org Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected References: <200808261111.19205.rusty@rustcorp.com.au> <20080826183051.GB10925@cs181140183.pp.htv.fi> <20080826205916.GB11734@cs181140183.pp.htv.fi> <18612.60878.887716.452936@drongo.ozlabs.ibm.com> In-Reply-To: <18612.60878.887716.452936@drongo.ozlabs.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 810 Lines: 19 Paul Mackerras wrote: > Linus Torvalds writes: > >> 4kB used to be the _only_ choice. And no, there weren't even irq stacks. >> So that 4kB was not just the whole kernel call-chain, it was also all the >> irq nesting above it. > > I think your memory is failing you. In 2.4 and earlier, the kernel > stack was 8kB minus the size of the task_struct, which sat at the > start of the 8kB. For instance, from include/asm-i386/processor.h for > 2.4.29: but was shared with interrupts; so out of the 6Kb left, you had still really only 4Kb for user context stack -- 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/