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Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER
From: |
Mark McLoughlin |
Subject: |
Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER |
Date: |
Wed, 27 May 2009 18:42:33 +0100 |
On Wed, 2009-05-27 at 09:21 -0500, Anthony Liguori wrote:
> We need a mechanism to toggle this for both this and virtio-blk. The
> reason a toggle is needed is so that 0.11 can create the same device
> model as 0.10.
Okay, so the scenario is:
- 0.10 guest running on source machine
- migrate to dest machine running 0.11
- the device model cannot change or the guest OS will get confused
How about running qemu on the dest machine with -model-version=0.10 ?
At least that way it's something the management system can easily figure
out (i.e. source is running in qemu 0.10, rather than source qemu is
using class=XXX).
Nasty thing about it is that the distributions couldn't cherry-pick
changes like this because they'd deviate from the device model contract
for a given upstream version.
Could we not put this stuff in savevm and change the device model
post-init?
Cheers,
Mark.
- [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Mark McLoughlin, 2009/05/22
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Avi Kivity, 2009/05/24
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Anthony Liguori, 2009/05/27
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER,
Mark McLoughlin <=
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Paul Brook, 2009/05/28
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Anthony Liguori, 2009/05/28
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Paul Brook, 2009/05/28
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Anthony Liguori, 2009/05/28
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Dor Laor, 2009/05/28
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Mark McLoughlin, 2009/05/29
- Re: [Qemu-devel] [PATCH] Change virtio-console to PCI_CLASS_SERIAL_OTHER, Anthony Liguori, 2009/05/29