Re: [PATCH 1/5] resources: add arch hook for preventing allocation in reserved areas

Rafael J. Wysocki
2010-12-12T13:20:56Z

On Sunday, December 12, 2010, Jesse Barnes wrote:
> On Sat, 11 Dec 2010 19:34:05 -0800
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
> > On Fri, Dec 10, 2010 at 5:37 PM, Jesse Barnes <jbarnes@virtuousgeek.org> wrote:
> > >
> > > Thanks, I'll add Dan and Rafael's tested-bys to the patches (they're
> > > already in my for-linus tree). Unless Linus has a problem with them
> > > I'll send them over to him this weekend or Monday.
> >
> > See my other email I just sent out.
> >
> > I really am not going to take some totally new experimental and hacky
> > major PCI resource management thing this late in the -rc game. No way,
> > no how.
> >
> > If the top-down allocator is causing regressions that cannot be fixed
> > by _simple_ patches, we're simply going to have to undo it. What's the
> > advantage of top-down? None. Not if we then need all this crap, which
> > we could as easily do on top of the bottom-up one WITHOUT any
> > regressions.
> >
> > Why isn't anybody else questioning the whole basic premise here?
>
> Questioning the whole premise is fine, but so far we've gone in (or at
> least think we're going in) a consistent direction: behave like Windows
> on platforms designed for Windows to avoid bugs that Windows doesn't
> hit and enable all the same devices Windows allows.
>
> But yes, I really don't like the nx6325 patch either; there's obviously
> something we're still missing that's preventing us from doing the right
> thing on that platform. Quirking it isn't a good long term answer.

OK, so I guess the best thing we can do for 2.6.37 is to revert
1af3c2e (x86: allocate space within a region top-down), right?

Rafael