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Re: [Xen-merge] write_cr{0,4}

from [Kurt Garloff]

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Subject:	Re: [Xen-merge] write_cr{0,4}
From:	Kurt Garloff <garloff@xxxxxxx>
Date:	Tue, 27 Dec 2005 19:48:50 +0100
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Best,

On Fri, Dec 23, 2005 at 11:39:45AM +0000, Keir Fraser wrote:
> Writes to cr0 already are emulated -- the TS bit is virtualised and all 
> other modified bits are ignored. We could also emulate (ignore) writes 
> to cr4, if that avoids xen-specific changes in the guest. The change to 
> do this is utterly trivial. Reads of cr4 are already emulated.

Hmm, the nVidia folks use CR4 to enable PAT ...
Is this something we want to support in dom0 ?

On the long term, I hope we'll have PAT replace MTRR in dom0 
even without nVidia ...

Best,
-- 
Kurt Garloff, Head Architect, Director SUSE Labs (act.), Novell Inc.

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