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Date: Thu, 18 Jun 2009 19:44:44 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCHv5 08/13] qemu: add support for resizing
	regions
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	<20090618131438.GI19092@redhat.com>
	<200906181735.10458.paul@codesourcery.com>
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To: Paul Brook <paul@codesourcery.com>
Cc: Carsten Otte <cotte@de.ibm.com>, kvm@vger.kernel.org, Glauber Costa <glommer@redhat.com>, Rusty Russell <rusty@rustcorp.com.au>, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, Blue Swirl <blauwirbel@gmail.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Avi Kivity <avi@redhat.com>

On Thu, Jun 18, 2009 at 05:32:11PM +0100, Paul Brook wrote:
> On Thursday 18 June 2009, Michael S. Tsirkin wrote:
> > Make it possible to resize PCI regions.  This will be used by virtio
> > with MSI-X, where the region size depends on whether MSI-X is enabled,
> > and can change across load/save.
> 
> I thought we'd agreed we shouldn't be doing this.
> i.e. if the user tries to load the wrong device, just bail out.
> 
> Paul

We need a way to generally prevent load from changing registers in a way
that can not be done by a guest.  I haven't implemented this feature yet
though.

-- 
MST