[PATCH] new radeon memory map fixes (#3)

[Donnie Berkholz]

Tilman Sauerbeck wrote:
> Tilman Sauerbeck [2006-02-12 13:39]:
>> Benjamin Herrenschmidt [2006-02-10 18:12]:
>>> Here's a 3rd set of patches. Please report regressions ASAP as I intend
>>> to merge those in the various CVS trees real soon now.
>>>
>>> [...]
>>>  
>>> Also, I fixed a potential issue in the DRM with machines where AGP
>>> writeback doesn't work (we would still rely on AGP writeback for the
>>> ring read ptr instead of reading it from a register).
>> I believe these 2 patches introduce a hardware lockup problem in 3D
>> mode for me. It's not reliably reproduced though, so I'm not sure
> 
> n/m, I just reproduced it with patch set #2, so it's not a regression.

I've been having the same problem since at least #2, but haven't had a
lockup yet with #3.

Donnie

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