Roland,
libmlx4 has this comments:
/* FIXME flush wc buffers */
and since it does *not* currently actually flush the buffers, if we
enable WC for blueflame, WRs gets mixed in the WC buffer, and QP gets
corrupted/stuck.
It seems we should we have arch.h under mthca and stick
some macro like wc_wmb() in there.
Or, would infiniband/arch.h under libibverbs be a better place?
If WC is not enabled, userspace can avoid the flush - so, should we
return such a bit as part of kernel abi?
--
MST
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