Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout v2

[Mika Fischer]

Gabriel C schrieb:
>> Ah, so the new X will be able to use the video memory in write-combining
>> mode even if I have an MTRR saying this area is uncachable or write-back?
>>
>> If that is the case, then I agree that this patch is not really needed.

It seems not to be the case, so this is moot anyway :)

> I doubt there will be any usable Xorg release soon.
> And I doubt peoples will run Xorg , mesa , etc master HEAD to have that feature. 
> 
> I think this patch is needed for now but as Ingo said , it should not be default.
> Peoples with these sort problems could boot with some option to enables this workaround.

Well, if it is compiled but inactive by default and can be enabled with
a kernel boot option, this is fine too.

But if it's a compile-time option, I doubt that any distro-kernel would
touch it if it's really dangerous. They're probably more likely to
backport the Xorg stuff if the new Xorg does not get finished in time.

Regards,
 Mika
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