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Date: Wed, 22 Apr 2009 12:02:51 +0200
From: Gerd Hoffmann <kraxel@redhat.com>
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To: Avi Kivity <avi@redhat.com>
CC: Anthony Liguori <anthony@codemonkey.ws>, Huang Ying <ying.huang@intel.com>,
       "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
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       Andi Kleen <andi@firstfloor.org>
Subject: Re: Xenner design and kvm msr handling
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On 04/21/09 18:15, Avi Kivity wrote:

> Maybe migration is cooperative,

It is.  It has to be, for the xen pv frontend drivers migration isn't 
transparent.

> that is the host tells the guest it is
> migrated, so it can re-register the hypercall area?

Yes, the guest re-does the wrmsr after migration.

cheers,
   Gerd