Re: [PATCH] trim memory not covered by WB MTRRs

[Jesse Barnes]

On Monday, June 25, 2007 8:29:35 pm Jesse Barnes wrote:
> Is there an is_cpu() check to differentiate between those?  Anyway I'd
> rather not enable it unless we see reports though...  So far I've only seen
> reports of this problem on some recent Intel based systems.

Oh, and FYI I've seen new systems with a default mapping type of WB, with a 
few uncached holes for MMIO.  That means PAT will be absolutely required on 
those systems if we want to use WC for the framebuffer or other memory.  I 
hope it's ready for mainline soon...

Jesse
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