Messages in this thread | | | Date | Tue, 26 Jan 2010 14:38:03 -0700 | From | Alex Chiang <> | Subject | Re: infiniband limit of 32 cards per system? |
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* Roland Dreier <rdreier@cisco.com>: > > > I'm guessing that it's not just a simple kernel fix though since > > OFED has to change too, right? > > Dunno about OFED. Nothing sane is hard-coding major/minor numbers > though -- so I think OFED should be OK, asuming there are no crazy > scripts that bypass udev creating device nodes etc.
Ok.
> I don't think that it's _totally_ trivial in the kernel -- we > do need to add some code in several places to allocate dynamic > device numbers when we run out of the static allocation > (probably best to keep the legacy device numbers for "small" < > 32 adapter systems, since there may be really small systems > with static hard-coded /dev etc).
I take it this concern is what prevents us from simply increasing IB_UVERBS_MAX_DEVICES to 64 or something?
thanks, /ac
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