virtio_ring: introduce packed ring support

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Introduce the packed ring support. Packed ring can only be
created by vring_create_virtqueue() and each chunk of packed
ring will be allocated individually. Packed ring can not be
created on preallocated memory by vring_new_virtqueue() or
the likes currently.

Signed-off-by: Tiwei Bie <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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Tiwei Bie authored and David S. Miller committed 2018-11-26 22:17:39 -08:00

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commit 1ce9e6055f

1 file changed

+870 -30

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drivers/virtio/virtio_ring.c

+870 -30

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