vringh: add 'iotlb_lock' to synchronize iotlb accesses

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Usually iotlb accesses are synchronized with a spinlock.
Let's request it as a new parameter in vringh_set_iotlb() and
hold it when we navigate the iotlb in iotlb_translate() to avoid
race conditions with any new additions/deletions of ranges from
the ioltb.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210315163450.254396-3-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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Stefano Garzarella 2021-03-15 17:34:38 +01:00 • committed by Michael S. Tsirkin

parent 4080fc1067

commit f53d9910d0

3 changed files with 15 additions and 3 deletions

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include/linux/vringh.h

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