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Old 04-16-07, 01:07 PM   #7
zander
NVIDIA Corporation
 
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Join Date: Aug 2002
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Default Re: Nvidia Linux Driver + 8800GTX + 4gigs of ram = No write combining

To help clarify: only 256MB of the 768MB are mapped through BAR1, so what you're seeing is expected; also, like chunkey said, the NVIDIA Linux graphics driver relies on the PAT and per-page PAT indices to specify memory types, if possible. It prints an error messages when PAT support is unavailable for some reason.
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