virtio: power management

Anyone looked at power management with virtio?
virtio-pci has callbacks to save/restore pci config
on suspend/resume, but it seems that more action,
such as restoring queue state, would be needed
for e.g. suspend to disk to work.

Rusty, any hints on the code in virtio-pci
that deals with suspend? Is it incomplete?

Thanks,

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MST