Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754264AbXIOHjh (ORCPT ); Sat, 15 Sep 2007 03:39:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751558AbXIOHja (ORCPT ); Sat, 15 Sep 2007 03:39:30 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:54993 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751525AbXIOHj3 (ORCPT ); Sat, 15 Sep 2007 03:39:29 -0400 Date: Sat, 15 Sep 2007 00:39:06 -0700 From: Andrew Morton To: Andi Kleen Cc: Chuck Ebbert , linux-kernel Subject: Re: Why do so many machines need "noapic"? Message-Id: <20070915003906.5fa6dc0f.akpm@linux-foundation.org> In-Reply-To: References: <46DF3BFF.9000809@redhat.com> X-Mailer: Sylpheed 2.4.1 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1436 Lines: 25 On 06 Sep 2007 13:31:50 +0200 Andi Kleen wrote: > Chuck Ebbert writes: > > > Some systems lock up without the noapic option. > > Please find patterns: cpu type, chipsets, mainboard vendors etc. There are 48 bugs in bugzilla which mention "noapic" http://bugzilla.kernel.org/buglist.cgi?query_format=advanced&short_desc_type=allwordssubstr&short_desc=&long_desc_type=substring&long_desc=noapic&kernel_version_type=allwordssubstr&kernel_version=&bug_status=NEW&bug_status=REOPENED&bug_status=ASSIGNED&emailassigned_to1=1&emailtype1=substring&email1=&emailassigned_to2=1&emailreporter2=1&emailcc2=1&emailtype2=substring&email2=&bugidtype=include&bug_id=&chfieldfrom=&chfieldto=Now&chfieldvalue=®ression=both&cmdtype=doit&order=Reuse+same+sort+as+last+time&field0-0-0=noop&type0-0-0=noop&value0-0-0= And there are 173,000 on the internet ;) http://www.google.com/search?hl=en&q=linux+noapic&btnG=Google+Search We screwed this pooch a long time ago - years. Perhaps if some of the many noapic users could run a bisection search to work out when it broke we could start fixing things. But they all have a workaround so there's no motivation. - 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/