On 04/15/2011 12:18 PM, Yinghai Lu wrote:
> On 04/15/2011 12:06 PM, Ingo Molnar wrote:
>
>>
>> Joerg, mind submitting it with a changelog that includes everything we
>> learned
>> about this bug and all the Tested-by's in place?
>>
>> Is anyone of the opinion that we should try to revert the allocation
>> order/alignment changes in addition to this fix?
>
> We should figure out what is written to 0xa0001000 (main memory) by GPU
> before internal GART is setup.
>
> Joerg,
> can you insert some dump code in the drm/radon code to find out which
> function cause the problem?
>
Yes, I would like to make sure we don't just paper over a real bug
(again). I think we still should talk Joerg's patch since it seems to
be the right thing to do anyway, but I do want to make sure we don't
have a memory-overwrite bug in the kernel that we're papering over.
-hpa
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