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SubjectRe: [patch 2/2] reduce tlb/cache flush times of agpgart memory allocation

* Arjan van de Ven <arjan@infradead.org> wrote:

> On Fri, 15 Aug 2008 16:31:31 +0200
> Ingo Molnar <mingo@elte.hu> wrote:
>
> >
> > * Shaohua Li <shaohua.li@intel.com> wrote:
> >
> > > To reduce tlb/cache flush, makes agp memory allocation do one flush
> > > after all pages in a region are changed to uc.
> > >
> > > All agp drivers except agp-sgi uses agp_generic_alloc_page() for
> > > .agp_alloc_page, so the patch should work for them. agp-sgi is only
> > > for ia64, so not a problem too.
> >
> > applied to tip/x86/pat - thanks!
> >
> > I've Cc:-ed more PAT folks - any objections?
> >
>
> it really needs something else instead; it needs airlied's array
> allocator otherwise you hit the second wall as well (the pat checks
> per page)
>
> in reality an array version of ioremap (or set_pages_X) is what is
> needed

ok, agreed.

Ingo


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