Re: [RFC Patch] use MTRR for write combining if PAT is not available

From: Thomas Schlichter
Date: Mon Oct 19 2009 - 11:10:30 EST


Ingo Molnar wrote:
> * Suresh Siddha <suresh.b.siddha@xxxxxxxxx> wrote:
> > Can't we just force PAT option always and we probably don't care about
> > ioremap_wc() on processors were PAT doesn't get enabled because of
> > known errata.
>
> We can make PAT configurability dependent on EMBEDDED-y - mind sending a
> patch for that?

I think there already is such a patch in -tip:
http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=commitdiff;h=c03cb3149daed3e411657e3212d05ae27cf1a874

Kind regards,
Thomas
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