[openib-general] Re: user-mode verbs on Itanium

[Michael S. Tsirkin]

Quoting r. Grant Grundler <iod00d at hp.com>:
> Subject: Re: user-mode verbs on Itanium
>
> > Couldn't post send: scnt=1
> 
> Another clue about this failure: I'm only seeing this if I specify "-s".
> 1,2,4,8,16,24,25,26,27,28 all worked.  All the values > 29 failed.
> (I tried 29, 30, 31, 32, 33, 64, 65, 4096, 8192).
> I'm pretty busy next week...not sure I'll be able to
> track it down then.
> 

Seems like a bug in mthca (kernel component):

/usr/src/linux-2.6.11/drivers/infiniband/hw/mthca # grep max_inline *c
mthca_provider.c:       init_attr->cap.max_inline_data = 0;

Roland - it seems like max_inline_data is being ignored instead of
being used for calculating send wqe size. Want a patch to fix that?

Grant - you can work around this bug for now by changing .max_send_sge
to a bigger value.


-- 
MST - Michael S. Tsirkin