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Re: [Xen-devel] Xen's use of PAT and PV guests

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Xen's use of PAT and PV guests
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Wed, 31 Mar 2010 09:31:07 +0100
Cc: Jan, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, Beulich <JBeulich@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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On Tue, 2010-03-30 at 22:47 +0100, Jeremy Fitzhardinge wrote:
> > I'm not sure that this scheme is at all upstreamable though.
> >
> I don't see why not; it would all be hidden away in the Xen code, and 
> maintains the normal x86 illusion.   It's just a matter of hooking 
> wrmsr, make_pte and pte_val, which we do already. 

I was referring to my patch which wasn't at all hidden away in the Xen
code. Anyway I've found and attached it for your amusement, it's not
nearly as fully baked as I remembered ;-) In my defence the date stamp
on the patch file is May 2009...


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