Re: [PATCH] EFI: Only set regions uncacheable if they support it

[H. Peter Anvin]

On 03/15/2012 07:42 AM, Matthew Garrett wrote:
> On Thu, Mar 15, 2012 at 07:36:46AM -0700, H. Peter Anvin wrote:
> 
>> I would still really like to understand why we're seeing #MCs... that's
>> bothersome all by itself.
> 
> The region is the legacy video RAM, so I can imagine there being 
> something magic about it.
> 

WTF?!  That should be UC at all times... it isn't even WC-capable.
Furthermore, we may need this region (assuming there is actually a video
card there.)

What do the fixed MTRRs look like?

	-hpa

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