From owner-svn-src-head@FreeBSD.ORG Fri Feb 26 02:02:28 2010 Return-Path: Delivered-To: svn-src-head@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 710FE106564A; Fri, 26 Feb 2010 02:02:28 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id 0B5458FC08; Fri, 26 Feb 2010 02:02:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.14.3/8.14.1) with ESMTP id o1Q1ugbg087471; Thu, 25 Feb 2010 18:56:43 -0700 (MST) (envelope-from imp@bsdimp.com) Date: Thu, 25 Feb 2010 18:56:53 -0700 (MST) Message-Id: <20100225.185653.364718154403387259.imp@bsdimp.com> To: attilio@FreeBSD.org From: "M. Warner Losh" In-Reply-To: <3bbf2fe11002251732t35179d9ar3c3f39aafe75d5c2@mail.gmail.com> References: <3bbf2fe11002251548y773c661gd4946f371bcbbd6f@mail.gmail.com> <3bbf2fe11002251732t35179d9ar3c3f39aafe75d5c2@mail.gmail.com> X-Mailer: Mew version 6.3 on Emacs 22.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org, delphij@gmail.com Subject: Re: svn commit: r204309 - in head/sys: amd64/amd64 amd64/isa conf i386/bios i386/cpufreq i386/i386 i386/isa i386/xen isa modules/bios/smbios modules/bios/vpd modules/cpufreq pc98/pc98 x86 x86/bios x86/... X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Feb 2010 02:02:28 -0000 In message: <3bbf2fe11002251732t35179d9ar3c3f39aafe75d5c2@mail.gmail.co= m> Attilio Rao writes: : 2010/2/26 Xin LI : : > On Thu, Feb 25, 2010 at 3:48 PM, Attilio Rao = wrote: : >> 2010/2/26 M. Warner Losh : : >>> In message: <201002251413.o1PEDdKV033584@svn.freebsd.org> : >>> =A0 =A0 =A0 =A0 =A0 =A0Attilio Rao writes: : >>> : Author: attilio : >>> : Date: Thu Feb 25 14:13:39 2010 : >>> : New Revision: 204309 : >>> : URL: http://svn.freebsd.org/changeset/base/204309 : >>> : : >>> : Log: : >>> : =A0 Introduce the new kernel sub-tree x86 which should contain = all the code : >>> : =A0 shared and generalized between our current amd64, i386 and = pc98. : >>> : : >>> : =A0 This is just an initial step that should lead to a more com= plete effort. : >>> : =A0 For the moment, a very simple porting of cpufreq modules, B= IOS calls and : >>> : =A0 the whole MD specific ISA bus part is added to the sub-tree= but ideally : >>> : =A0 a lot of code might be added and more shared support should= grow. : >>> : >>> Cool! : >>> : >>> : =A0 Sponsored by: =A0 =A0 =A0 Sandvine Incorporated : >>> : =A0 Reviewed by: =A0 =A0 =A0 =A0emaste, kib, jhb, imp : >>> : =A0 Discussed on: =A0 =A0 =A0 arch : >>> : =A0 MFC: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A03 weeks : >>> : >>> Is this really wise? =A0Are these changes KPI neutral? : >> : >> I don't think there are (still) KPI changes. : >> Which one are you referring to? : > : > I think Warner means that there will be some header files to change= : > their location, making certain (I doubt there is any but just in ca= se) : > kernel modules maintained by third party to break (technically thes= e : > are not part of KPI but something that _could_ make third party : > developers unhappy I guess). : = : Yes but what is already compiled (thirdy-part modules included) will : keep working without a glance. Yes, but modules can't be recompiled. That's why I said KPI rather than KBI. : I think there have been already MFCed patches doing headers movements= : in the past. We've tried to keep the KPI upwardly compatible. If files move, then old code will potentially break. Warner