[Bug 1545760] [NEW] libmlx4: add s390x support (from upstream repository)

Mon Feb 15 15:22:20 UTC 2016

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== Comment: #0 - Hendrik Brueckner <brueckner at de.ibm.com> - 2016-02-15 03:33:42 ==
Please include s390x support for the libmlx4 library.  The s390 specific change is accepted upstream but not yet released in an libmlx4 version:

git://git.openfabrics.org/~yishaih/libmlx4.git

commit f5c26f8762135f629c8cbe73d808e3029f07b176
Author: Alexey Ishchuk <aishchuk at linux.vnet.ibm.com>
Date:   Wed Nov 19 11:17:19 2014 +0100

    Add support for the s390x platform

    Since, s390x platform requires execution of privileged CPU instructions
    to work with PCI I/O memory, the PCI I/O memory cannot be directly accessed
    from the userspace programs via the mapped memory areas. The current
    implementation of the Inifiniband verbs uses mapped memory areas to
    write data to device UAR and Blueflame page to initiate the I/O
    operations, these verbs currently cannot be used on the s390x platfrom
    without modification.
    This patch contains the changes to the libmlx4 userspace Mellanox device
    driver library required to provide support for the DAPL API on the s390x
    platform. The original code that directly used mapped memory areas to access
    the PCI I/O memory of the Mellanox networking device is replaced with the
    new system call invocation for writing the data to mapped memory areas.

    Signed-off-by: Alexey Ishchuk <aishchuk at linux.vnet.ibm.com>
    Signed-off-by: Yishai Hadas <yishaih at mellanox.com>

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New

** Tags: architecture-s39064 bugnameltc-137122 severity-critical targetmilestone-inin1604
-- 
libmlx4: add s390x support (from upstream repository)
https://bugs.launchpad.net/bugs/1545760
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