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SubjectRe: [PATCH v3 6/9] radeon: Switch to arch_phys_wc_add and add a missing ..._del
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On Wed, May 15, 2013 at 2:22 PM, Andy Lutomirski <luto@amacapital.net> wrote:
> On Wed, May 15, 2013 at 7:49 AM, Jerome Glisse <j.glisse@gmail.com> wrote:
>> On Tue, May 14, 2013 at 5:35 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>>> On Tue, May 14, 2013 at 6:37 AM, Jerome Glisse <j.glisse@gmail.com> wrote:
>>>> On Tue, May 14, 2013 at 8:58 AM, Alex Deucher <alexdeucher@gmail.com> wrote:
>>>>> On Mon, May 13, 2013 at 7:58 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>>>>>> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>>>>>> Signed-off-by: Andy Lutomirski <luto@amacapital.net>
>>>>>
>>>>> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
>>>>
>>>> I believe it will break something but we could deal with the fallout
>>>> once it happens.
>>>
>>> FWIW, I'm running with this code on my machine right now using the
>>> radeon driver. Everything seems fine. If I build without MTRRs and
>>> without PAT, though, graphics are slow (as expected). So I think
>>> everything's okay.
>>>
>>> --Andy
>>
>> I am worried on p4 where i last see issue with that notably with agp.
>
> Do you remember any details? It looks like PAT is enabled on Pentium
> 4 (i.e. famliy 0xF).
>
> --Andy

No i don't, i think it was some pat errata on those about non real ram
address and with agp. Memory is fuzzy. I might have time in couple of
week to plug back my p4 and see how it behave.

Cheers,
Jerome


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