Date: Fri, 26 Feb 2010 12:49:36 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: "M. Warner Losh" <imp@bsdimp.com> Cc: attilio@freebsd.org, 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/... Message-ID: <20100226104936.GD2489@deviant.kiev.zoral.com.ua> In-Reply-To: <20100225.185653.364718154403387259.imp@bsdimp.com> References: <3bbf2fe11002251548y773c661gd4946f371bcbbd6f@mail.gmail.com> <a78074951002251708x52435f63g8d22b371f54cd2f7@mail.gmail.com> <3bbf2fe11002251732t35179d9ar3c3f39aafe75d5c2@mail.gmail.com> <20100225.185653.364718154403387259.imp@bsdimp.com>
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--llIrKcgUOe3dCx0c Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Feb 25, 2010 at 06:56:53PM -0700, M. Warner Losh wrote: > In message: <3bbf2fe11002251732t35179d9ar3c3f39aafe75d5c2@mail.gmail.com> > Attilio Rao <attilio@FreeBSD.org> writes: > : 2010/2/26 Xin LI <delphij@gmail.com>: > : > On Thu, Feb 25, 2010 at 3:48 PM, Attilio Rao <attilio@freebsd.org> wr= ote: > : >> 2010/2/26 M. Warner Losh <imp@bsdimp.com>: > : >>> In message: <201002251413.o1PEDdKV033584@svn.freebsd.org> > : >>> =9A =9A =9A =9A =9A =9AAttilio Rao <attilio@FreeBSD.org> writes: > : >>> : Author: attilio > : >>> : Date: Thu Feb 25 14:13:39 2010 > : >>> : New Revision: 204309 > : >>> : URL: http://svn.freebsd.org/changeset/base/204309 > : >>> : > : >>> : Log: > : >>> : =9A Introduce the new kernel sub-tree x86 which should contain al= l the code > : >>> : =9A shared and generalized between our current amd64, i386 and pc= 98. > : >>> : > : >>> : =9A This is just an initial step that should lead to a more compl= ete effort. > : >>> : =9A For the moment, a very simple porting of cpufreq modules, BIO= S calls and > : >>> : =9A the whole MD specific ISA bus part is added to the sub-tree b= ut ideally > : >>> : =9A a lot of code might be added and more shared support should g= row. > : >>> > : >>> Cool! > : >>> > : >>> : =9A Sponsored by: =9A =9A =9A Sandvine Incorporated > : >>> : =9A Reviewed by: =9A =9A =9A =9Aemaste, kib, jhb, imp > : >>> : =9A Discussed on: =9A =9A =9A arch > : >>> : =9A MFC: =9A =9A =9A =9A =9A =9A =9A =9A3 weeks > : >>> > : >>> Is this really wise? =9AAre 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 case) > : > kernel modules maintained by third party to break (technically these > : > are not part of KPI but something that _could_ make third party > : > developers unhappy I guess). > :=20 > : Yes but what is already compiled (thirdy-part modules included) will > : keep working without a glance. >=20 > Yes, but modules can't be recompiled. That's why I said KPI rather > than KBI. >=20 > : I think there have been already MFCed patches doing headers movements > : in the past. >=20 > We've tried to keep the KPI upwardly compatible. If files move, then > old code will potentially break. Yes, but there is very non-trivial cost of not merging this. It makes testing in HEAD of other patches less valuable for merges, and merges itself becomes more time-consuming and risking. Fortunately, I do not no dri, but I know that maintaining patches both for 7 and 8/HEAD of dri is a hell. --llIrKcgUOe3dCx0c Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkuHpz8ACgkQC3+MBN1Mb4iMdgCfSe3/wXzvoX9VqxfiXJLun2z0 SJAAni//AXtedV6dY7ZvcvBFIvYDLL4c =cDZb -----END PGP SIGNATURE----- --llIrKcgUOe3dCx0c--
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