linux_dsm_epyc7002/drivers/infiniband
Artemy Kovalyov d623dfd283 IB/mlx5: Compare only index part of a memory window rkey
The InfiniBand Architecture Specification section 10.6.7.2.4 TYPE 2 MEMORY
WINDOWS says that if the CI supports the Base Memory Management Extensions
defined in this specification, the R_Key format for a Type 2 Memory Window
must consist of:

* 24 bit index in the most significant bits of the R_Key, which is owned
  by the CI, and
* 8 bit key in the least significant bits of the R_Key, which is owned by
  the Consumer.

This means that the kernel should compare only the index part of a R_Key
to determine equality with another R_Key.

Fixes: db570d7dea ("IB/mlx5: Add ODP support to MW")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:27:56 -03:00
..
core IB/core: Ensure an invalidate_range callback on ODP MR 2019-03-26 16:39:40 -03:00
hw IB/mlx5: Compare only index part of a memory window rkey 2019-03-27 15:27:56 -03:00
sw RDMA/rxe: Fix slab-out-bounds access which lead to kernel crash later 2019-03-26 12:51:10 -03:00
ulp IB/iser: remove uninitialized variable len 2019-03-27 10:20:33 -03:00
Kconfig IB/{core,uverbs}: Move ib_umem_xxx functions from ib_core to ib_uverbs 2019-01-10 17:06:44 -07:00
Makefile IB/rdmavt: Create module framework and handle driver registration 2016-03-10 20:37:04 -05:00