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| author | Feng Liu <[email protected]> | 2023-03-15 20:54:56 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <[email protected]> | 2023-04-21 03:02:31 -0400 |
| commit | a084983dcd4e75616fe4102c690d2fc922ac32b5 (patch) | |
| tree | 0c0aa11f34f9a85384a6a623a2fe077d20b61d13 /lib/test_fortify/write_overflow-strscpy.c | |
| parent | bea273c7a8712a055cd504a2bb7d76d8d713ba6e (diff) | |
virtio_ring: Allow non power of 2 sizes for packed virtqueue
According to the Virtio Specification, the Queue Size parameter of a
virtqueue corresponds to the maximum number of descriptors in that
queue, and it does not have to be a power of 2 for packed virtqueues.
However, the virtio_pci_modern driver enforced a power of 2 check for
virtqueue sizes, which is unnecessary and restrictive for packed
virtuqueue.
Split virtqueue still needs to check the virtqueue size is power_of_2
which has been done in vring_alloc_queue_split of the virtio_ring layer.
To validate this change, we tested various virtqueue sizes for packed
rings, including 128, 256, 512, 100, 200, 500, and 1000, with
CONFIG_PAGE_POISONING enabled, and all tests passed successfully.
Signed-off-by: Feng Liu <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strscpy.c')
0 files changed, 0 insertions, 0 deletions