Roland Dreier wrote:
> I know it's a long shot, but has anyone tried using OFED on
> a kernel with 64Kbyte pages?
>
> SGI would like to support that, but I've gotten reports that
> something is not working (e.g., "ib_rdma_bw" doesn't work on
> an ia64 kernel with 64Kb pages). This is with the mthca driver,
> fwiw.
>
> Unfortunately a conspiracy of h/w prevents me from reproducing
> this right now, so I don't have more details. But I'd be very
> curious to know if anyone can verify that OFED does/doesn't
> work with 64Kbyte pages.
I don't know about OFED, but I've tried various things on 64KB PAGE_SIZE
systems and it seems to work. It wouldn't surprise me if there are
issues since the drivers and firmware gets a lot less testing in such
situations but it "should work" -- I'd be happy to help debug if anyone
has concrete problems.
OFED was tested on PPC64 with RHEL5.1 which works with 64K pages as a
default.
This was tested with our ConnectX cards (mlx4 driver)
I think IBM are using the same OS for their ehca cards too
Tziporet
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