From owner-svn-src-all@FreeBSD.ORG Fri Mar 19 17:19:13 2010 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CAB85106567B; Fri, 19 Mar 2010 17:19:13 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 9BBD18FC1C; Fri, 19 Mar 2010 17:19:13 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 5815D46B64; Fri, 19 Mar 2010 13:19:13 -0400 (EDT) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPA id 72F0E8A025; Fri, 19 Mar 2010 13:19:12 -0400 (EDT) From: John Baldwin To: Ivan Voras Date: Fri, 19 Mar 2010 13:16:04 -0400 User-Agent: KMail/1.12.1 (FreeBSD/7.3-CBSD-20100217; KDE/4.3.1; amd64; ; ) References: <7d6fde3d1003182333m336d52fbh987035a21568250d@mail.gmail.com> <9bbcef731003190913k4f3afbd8mb4e767c40433be8e@mail.gmail.com> In-Reply-To: <9bbcef731003190913k4f3afbd8mb4e767c40433be8e@mail.gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201003191316.04620.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Fri, 19 Mar 2010 13:19:12 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.7 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: svn-src-head@freebsd.org, Garrett Cooper , svn-src-all@freebsd.org, src-committers@freebsd.org, Xin LI Subject: Re: I486_CPU and I586_CPU removed from GENERIC kernel [was Re: svn commit: r205307 - head/sys/i386/conf] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Mar 2010 17:19:13 -0000 On Friday 19 March 2010 12:13:00 pm Ivan Voras wrote: > On 19 March 2010 07:33, Garrett Cooper wrote: > > On Thu, Mar 18, 2010 at 6:16 PM, Xin LI wrote: > >> Author: delphij > >> Date: Fri Mar 19 01:16:53 2010 > >> New Revision: 205307 > >> URL: http://svn.freebsd.org/changeset/base/205307 > >> > >> Log: > >> SSE is enabled by default about 5 years ago so there is no point pretending > >> that we support I486 and I586 CPUs in the GENERIC kernel, users wants these > >> support would have to build a custom kernel to explicitly disable SSE > >> anyways. > > SSE in the userland you mean? Regardless, I don't think there is now > reason for compiling everything as for i386. E.g. why not add at least > -mtune=generic or even also -march=i686 to default gcc options? > > http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html I actually suggested using -mtune=i686 several years ago for i386. Using -mtune=generic probably would be a good thing to use when CPUTYPE is not specified for i386 and amd64 now. -- John Baldwin