From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757689AbZELQQ7 (ORCPT ); Tue, 12 May 2009 12:16:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754993AbZELQQq (ORCPT ); Tue, 12 May 2009 12:16:46 -0400 Received: from vpn.id2.novell.com ([195.33.99.129]:8605 "EHLO vpn.id2.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757161AbZELQQp convert rfc822-to-8bit (ORCPT ); Tue, 12 May 2009 12:16:45 -0400 Message-Id: <4A09BD0E020000780000081C@vpn.id2.novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.0 Date: Tue, 12 May 2009 17:16:46 +0100 From: "Jan Beulich" To: "Nick Piggin" , "H. Peter Anvin" Cc: "Ingo Molnar" , "Thomas Gleixner" , Subject: Re: uses of cmpxchg/xadd in spinlock.h and rwsem.h vs. CONFIG_M386 References: <4A09AF8402000078000007DC@vpn.id2.novell.com> <4A099AF0.8020001@zytor.com> <20090512155702.GB31131@wotan.suse.de> <4A099DFC.7040905@zytor.com> In-Reply-To: <4A099DFC.7040905@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> "H. Peter Anvin" 12.05.09 18:04 >>> >Nick Piggin wrote: >> >> Is it time to get rid of attempts to support SMP kernels that run on 386, then? >> Considering we don't actually support SMP 386, and if there is any 386 systems >> then they're going to be running custom kernels anyway. >> > >Makes sense to me. We have never supported SMP 386 to the best of my >knowledge, and a patch to rip that out would be appreciated. But why shouldn't a distro be allowed to configure a kernel that runs (UP) on i386 and also MP on modern systems? Jan