linux-kernel - Re: [RFC Patch] use MTRR for write combining if PAT is not available

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Date:	Fri, 09 Oct 2009 21:24:41 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Thomas Schlichter <thomas.schlichter@....de>
CC:	linux-kernel@...r.kernel.org,
	Thomas Hellstrom <thellstrom@...are.com>
Subject: Re: [RFC Patch] use MTRR for write combining if PAT is not available

Thomas Schlichter wrote:
> Hi,
> 
> I've found a problem with X.org not setting up MTRR for the framebuffer 
> memory. After I investigated I think this is not a X.org problem, but a kernel 
> issue.

is there any CPU left that does not support PAT ?

eg in other words, should we try instead to get PAT working for you?
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