Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760147AbZAHOVw (ORCPT ); Thu, 8 Jan 2009 09:21:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752491AbZAHOVo (ORCPT ); Thu, 8 Jan 2009 09:21:44 -0500 Received: from styx.suse.cz ([82.119.242.94]:36912 "EHLO mail.suse.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751031AbZAHOVn (ORCPT ); Thu, 8 Jan 2009 09:21:43 -0500 Date: Thu, 8 Jan 2009 15:21:41 +0100 (CET) From: Jiri Kosina To: Peter Zijlstra cc: Adam Osuchowski , linux-kernel@vger.kernel.org, Ingo Molnar , Nick Piggin Subject: Re: Is 386 processor still supported? In-Reply-To: <1231424025.11687.447.camel@twins> Message-ID: References: <20090108120338.6b8b4567@zonk.pl> <1231424025.11687.447.camel@twins> User-Agent: Alpine 1.10 (LNX 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 795 Lines: 21 On Thu, 8 Jan 2009, Peter Zijlstra wrote: > > Subject: x86: make spinlocks available on machines without xadd insn > > Current kernel wouldn't compile on ancient x86 machines that don't support > > xadd instruction, as ticket spinlocks implementation unconditionally uses > > it. > > On machines without CONFIG_X86_XADD, use old-style byte spinlock > > implementation instead. > afaik we don't support i386-smp and up spinlocks are trivial > preempt_disable() calls. Hmm. Where in Kconfig is SMP for M386 not allowed? -- Jiri Kosina SUSE Labs -- 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/