[openib-general] Proposed device enumeration & async event APIs

[Roland Dreier]

    Fab> Will clients be able to allocate HCA resources from the
    Fab> callback?  Will this work if there's a lock held during
    Fab> callbacks?  I'm not too familiar with the mthca code, but
    Fab> VAPI didn't let you do anything while holding a lock.

Yes.  I was a little vague about the type of lock -- it's a semaphore,
which means it's safe to sleep while holding the lock.  The only
functions you can't call would be functions that deadlock against the
same lock, ie register/deregister a client or a device.

 - R.