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    SubjectRe: [ofa-general] InfiniBand/RDMA merge plans for 2.6.24
    On Thursday 13 September 2007 20:57, Roland Dreier wrote:
    > HW specific:
    >  - I already merged patches to enable MSI-X by default for mthca and
    >    mlx4.  I hope there aren't too many systems that get hosed if a
    >    MSI-X interrupt is generated.
    >  - Jack and Michael's mlx4 FMR support.  Will merge I guess, although
    >    I do hope to have time to address the DMA API abuse that is being
    >    copied from mthca, so that mlx4 and mthca work in Xen domU.
    >  - ehca patch queue.  Will merge, pending fixes for the few minor
    >    issues I commented on.
    >  - Steve's mthca router mode support.  Would be nice to see a review
    >    from someone at Mellanox.
    >  - Arthur's mthca doorbell alignment fixes.  I will experiment with a
    >    few different approaches and post what I like (and fix mlx4 as
    >    well).  I hope Arthur can review.
    >  - Michael's mlx4 WQE shrinking patch.  Not sure yet; I'll reply to
    >    the latest patch directly.
    Missing from this list (IMPORTANT patch!):
    [ofa-general] [PATCH 2 of 2] IB/mlx4: Handle new FW requirement for send request prefetching, for WQE sg lists
    (Posted by me to list on Sept 4)
    {patch header:
    This is an addendum to Roland's commit 0e6e74162164d908edf7889ac66dca09e7505745
    (June 18). This addendum adds prefetch headroom marking processing for s/g segments.

    We write s/g segments in reverse order into the WQE, in order to guarantee
    that the first dword of all cachelines containing s/g segments is written last
    (overwriting the headroom invalidation pattern). The entire cacheline will thus
    contain valid data when the invalidation pattern is overwritten.
    This patch series (1 of 2 is for libmlx4, the same issue).

    Also, I'm now posting (in a separate post) the following patch to mlx4, which is important:
    display the following device information via sysfs:
    board_id, fw_ver, hw_rev, hca_type.

    The info is displayed under directory /sys/class/infiniband/mlx4_x, where x is
    the pci bus sequence number (starting from zero).

    This patch makes information available to ibstat and ibv_devinfo under the
    same directory as is used for tavor/arbel/sinai -- thus requiring no userspace

    - Jack

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