In message: <3bbf2fe11002260557y484cf13bq76f7507c07ed3...@mail.gmail.com>
Attilio Rao <atti...@freebsd.org> writes:
: 2010/2/26 Ed Maste <ema...@freebsd.org>:
: > [ About the i386/amd64/pc98 -> x86 merge ]
: >
: >> > : 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.
: >>
: >> 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.
: >
: > For headers on older branches we can just leave backwards compatibility
: > stubs in the i386, amd64 and pc98 directories that include the header
: > from the new x86 directory.
:
: Yes, I thought something along those lines, if we think it is worthy
: (I'm not very concerned about it right now).
: For the future, however, probabilly we would need to do something like
: pc98 already does wrt i386 (i386/include/ pc98/include/ amd64/include/
: just have files wrappers to the generic one under x86/include/ when
: necessary).
Yes. If you're going to merge this to old branches, it is critical
that you do this so you don't break the compilation of modules on
those branches.
Warner
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