Re: [RFC Patch] use MTRR for write combining if PAT is notavailable

[Ingo Molnar]

* Jan Beulich <JBeulich@xxxxxxxxxx> 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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