[openib-general] [mthca] Creation of a SRQ with many WR (> 16K) in kernel level fails

[Roland Dreier]

 > anyway, the solution that comes into my mind is to disable creating a
 > QP/SRQ for which > 128KB allocations are needed. So
 > mthca_query_device() will set the max_qp_wr and max_srq_wr attributes
 > to values whose derived size still allows to use kmalloc.

But that will limit the size of the queues that userspace can create
too.  I guess we could allocate kernel wrid arrays with vmalloc(), but
I wonder if anyone actually cares about this limit...

 - R.