mirror of https://gitee.com/openkylin/linux.git
608d8268be
In mthca_arbel_fmr_unmap(), the high bits of the key are masked off. This gets rid of the effect of adjust_key(), which makes sure that bits 3 and 23 of the key are equal when the Sinai throughput optimization is enabled, and so it may happen that an FMR will end up with bits 3 and 23 in the key being different. This causes data corruption, because when enabling the throughput optimization, the driver promises the HCA firmware that bits 3 and 23 of all memory keys will always be equal. Fix by re-applying adjust_key() after masking the key. Thanks to Or Gerlitz for reproducing the problem, and Ariel Shahar for help in debug. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com> |
||
|---|---|---|
| .. | ||
| core | ||
| hw | ||
| ulp | ||
| Kconfig | ||
| Makefile | ||