Jason Gunthorpe dd574d9b72 vfio/gvt: Fix open/close when multiple device FDs are open ...

The user can open multiple device FDs if it likes, however the open
function calls vfio_register_notifier() on device global state. Calling
vfio_register_notifier() twice will trigger a WARN_ON from
notifier_chain_register() and the first close will wrongly delete the
notifier and more.

Since these really want the new open/close_device() semantics just change
the function over.

Reviewed-by: Zhenyu Wang <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alex Williamson <[email protected]>

2021-08-11 09:50:11 -06:00

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drm

vfio/gvt: Fix open/close when multiple device FDs are open

2021-08-11 09:50:11 -06:00

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