Avi Kivity wrote:
Rusty Russell wrote:
On Tuesday 29 January 2008 02:59:59 Anthony Liguori wrote:
As Avi pointed out, as we continue to massage the virtio PCI ABI, we
can
make things a little more friendly to users by utilizing the PCI
revision
field to indicate which version of the ABI we're using. This is a
hard ABI
version and incrementing it will cause the guest driver to break.
This is the necessary changes to virtio_pci to support this.
Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>
Applied, thanks.
But that's done at the wrong level. Anthony agreed the revision ID
should indicate the device ABI, not just the virtio ABI. If we move
to that level, bumping just one device rev id on the host will break
all devices on the guest.
That's not what I was agreeing too. I don't want to plumb an ABI
interface through virtio for each device. This is what I didn't like
about having an ABI field in the first place. I'm thinking we should
just drop both of these and instead just rely on feature bits.
Regards,
Anthony Liguori
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