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

* Jan Beulich <JBeulich@novell.com> wrote:

> > So if it's OK for Jan, I'll reduce the functionality again and use
> > mtrr_add() instead. Btw. this simply means to drop
> > mtrr_add_unaligned(), all the other parts are still required for
> > reference counting and a proper mtrr_del() on file close.
>
> I'm perfectly fine with just handling the aligned case, as long as the
> code checks that the alignment constraints are met.

It could even emit a debug warning if they are not met - that way we'll
see how important the unaligned case is.

Ingo


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