In message: <3bbf2fe11002251732t35179d9ar3c3f39aafe75d...@mail.gmail.com>
Attilio Rao <atti...@freebsd.org> writes:
: 2010/2/26 Xin LI <delp...@gmail.com>:
: > On Thu, Feb 25, 2010 at 3:48 PM, Attilio Rao <atti...@freebsd.org> wrote:
: >> 2010/2/26 M. Warner Losh <i...@bsdimp.com>:
: >>> In message: <201002251413.o1peddkv033...@svn.freebsd.org>
: >>> Attilio Rao <atti...@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:
: >>> : Introduce the new kernel sub-tree x86 which should contain all the
code
: >>> : shared and generalized between our current amd64, i386 and pc98.
: >>> :
: >>> : This is just an initial step that should lead to a more complete
effort.
: >>> : For the moment, a very simple porting of cpufreq modules, BIOS calls
and
: >>> : the whole MD specific ISA bus part is added to the sub-tree but
ideally
: >>> : a lot of code might be added and more shared support should grow.
: >>>
: >>> Cool!
: >>>
: >>> : Sponsored by: Sandvine Incorporated
: >>> : Reviewed by: emaste, kib, jhb, imp
: >>> : Discussed on: arch
: >>> : MFC: 3 weeks
: >>>
: >>> Is this really wise? Are 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).
:
: 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
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