forked from Minki/linux
0fd7e1d855
The current work request posting code writes the LSO segment before writing any data segments. This leaves a window where the LSO segment overwrites the stamping in one cacheline that the HCA prefetches before the rest of the cacheline is filled with the correct data segments. When the HCA processes this work request, a local protection error may result. Fix this by saving the LSO header size field off and writing it only after all data segments are written. This fix is a cleaned-up version of a patch from Jack Morgenstein <jackm@dev.mellanox.co.il>. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1383>. Reported-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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