virtio_vdpa: setup correct vq size with callbacks get_vq_num_{max,min}
For the devices which implement the get_vq_num_min callback, the driver should not negotiate with virtqueue size with the backend vdpa device if the value returned by get_vq_num_min equals to the value returned by get_vq_num_max. This is useful for vdpa devices based on legacy virtio specfication. Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com> Link: https://lore.kernel.org/r/bc0551cec6c3f3dd9424b678b7c22d882aebab3a.1635493219.git.wuzongyong@linux.alibaba.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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