[ofa-general][PATCH v2 1/2]mlx4: Multiple completion vectors support

[Or Gerlitz]

Roland Dreier wrote:
> Also any thoughts on how an app/ULP can sanely choose which vector to use?
For apps that use verbs directly this might be somehow simple, for 
example a file/block I/O target that has a receiver process/thread per 
core/cpu and this process is shielded (eg through CPU affinity 
mechanisms) to a specific cpu.

This process gives the index of the CPU it runs on as an input to the CQ 
creation verb, done.

Or.