Question: block device, legacy interface, why 8-type descriptor ...... #231
Description
In "5.2.6.4 Legacy Interface: Framing Requirements", for all version of virtio specifiction.
MUST use a single 8-byte descriptor containing type, reserved and sector, followed by descriptors for data, then finally a separate 1-byte descriptor for status.
However, when checking struct virtio_blk_req, type, reserved and sector, these three fields require 16 bytes. Why here says 8-byte?
Thanks,
Chen