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Date: Tue, 19 May 2009 14:37:28 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Gerd Hoffmann <kraxel@redhat.com>, Jeremy Fitzhardinge <jeremy@goop.org>,
       Xen-devel <xen-devel@lists.xensource.com>,
       the arch/x86 maintainers <x86@kernel.org>,
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       Thomas Gleixner <tglx@linutronix.de>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [Xen-devel] Re: [GIT PULL] xen /proc/mtrr implementation
Message-ID: <20090519123728.GA2377@elte.hu>
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* Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> > - or introduce its own hypercall API based administration API,
> >   without bothering the guest kernel with crap. Trivially patch Xorg
> >   to make use of it and that's it.
> 
> PCI pass through mixed with that isn't going to be fun and PCI 
> pass through is one area where a lot of the MTRR manipulation is 
> meaningful and valid (and can be handled for the guest).

virtualizing that aspect of the CPU properly is certainly the 
highest grade approach.

> I really don't see why rd/wrmsr processing isn't sufficient for 
> this

/me neither.

	Ingo