[openib-general] questions about gen2 srp driver

chas williams - CONTRACTOR chas at cmf.nrl.navy.mil
Fri Feb 10 06:57:34 PST 2006


In message <adak6c8hs9v.fsf at cisco.com>,Roland Dreier writes:
>Yes, it's exactly because we know that work queues run in process
>context with interrupts enabled which lets us use spin_lock_irq.

thanks for the reply.  you are quite right.  i dont know what i was
thinking.

>There's no limitation on number of outstanding RDMAs targeting a
>single R_Key.

after looking at it further i finally see what the srp driver is
doing.  i didnt know that the rkey/lkey it gets during init applies
to entire host memory.  now, things make a little more sense.  part
of my confusion is that ->va really seems to mean physical address
not virtual address.



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