在 2021/10/1 下午3:05, Eugenio Pérez 写道:
This will make qemu aware of the device used buffers, allowing it to write the guest memory with its contents if needed. Since the use of vhost_virtqueue_start can unmasks and discard call events, vhost_virtqueue_start should be modified in one of these ways: * Split in two: One of them uses all logic to start a queue with no side effects for the guest, and another one tha actually assumes that the guest has just started the device. Vdpa should use just the former. * Actually store and check if the guest notifier is masked, and do it conditionally. * Left as it is, and duplicate all the logic in vhost-vdpa.
Btw, the log looks not clear. I guess this patch goes for method 3. If yes, we need explain it and why.
Thanks
Signed-off-by: Eugenio Pérez<eperezma@xxxxxxxxxx>
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