From mboxrd@z Thu Jan  1 00:00:00 1970
From: xrg.dev-8HG2SOrYmURWk0Htik3J/w@public.gmane.org
Subject: (unknown)
Date: Wed, 24 Jul 2013 20:12:17 -0400
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Hi list,

I am moving my work environment on P/Linux, and I am having trouble register large amount of memories. The device I have are ConnectX-3 EN (RoCE). i am trying to register 16GB of memory, mmap and mlock succeeded, but ibv_reg_mr returns ENOMEM.

Concurrently, the kernel log reports the following while trying to ibb_reg_mr :

kernel: iommu_alloc failed, tbl c000001f33e4a680 vaddr c000001ebd7b0000 npages 10

I set log_num_mtt = 20 and log_mtts_per_seg=7, and the page size on that architecture is 64KB.

Any clue at what might be wrong ?

Thanks,


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