Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964812AbVLMKQE (ORCPT ); Tue, 13 Dec 2005 05:16:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964801AbVLMKQE (ORCPT ); Tue, 13 Dec 2005 05:16:04 -0500 Received: from mx1.redhat.com ([66.187.233.31]:44970 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S932601AbVLMKQB (ORCPT ); Tue, 13 Dec 2005 05:16:01 -0500 Date: Tue, 13 Dec 2005 05:15:42 -0500 From: Jakub Jelinek To: Andi Kleen Cc: Andrew Morton , mingo@elte.hu, dhowells@redhat.com, torvalds@osdl.org, hch@infradead.org, arjan@infradead.org, matthew@wil.cx, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation Message-ID: <20051213101542.GJ31785@devserv.devel.redhat.com> Reply-To: Jakub Jelinek References: <20051212161944.3185a3f9.akpm@osdl.org> <20051213075441.GB6765@elte.hu> <20051213075835.GZ15804@wotan.suse.de> <20051213004257.0f87d814.akpm@osdl.org> <20051213084926.GN23384@wotan.suse.de> <20051213010126.0832356d.akpm@osdl.org> <20051213010233.50fce969.akpm@osdl.org> <20051213100715.GH31785@devserv.devel.redhat.com> <20051213101152.GU23384@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051213101152.GU23384@wotan.suse.de> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1165 Lines: 30 On Tue, Dec 13, 2005 at 11:11:53AM +0100, Andi Kleen wrote: > > Guess > > > > #if __GNUC__ == 3 && __GNUC_MINOR__ < 3 > > #error Your compiler is too buggy; it is known to miscompile kernels. > > #error Known good compilers: 3.3, 3.4, 4.0 > > #endif > > > > would be better. __GNUC__ < 2 will certainly be errored about in other > > places and it is bad to suggest compilers that are no longer supported > > as known good ones. > > Are there really any known serious miscompilation with 3.1/3.2? > (I knew it used to miscompile some loops on x86-64, but I think I worked > around all that) > > Preventing SLES9 and RHEL3 users from easily compiling new kernels > isn't good. The above is ARM solely, the comment there mentions some ARM postreload bug that was only fixed in 3.3+. I'd say 3.2 should be generally supported for the time being on arches where there weren't significant problems with it. Jakub - 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/