RDMA/rxe: Allow registering persistent flag for pmem MR only

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Memory region could  support at most 2 flush access flags:
IB_ACCESS_FLUSH_PERSISTENT and IB_ACCESS_FLUSH_GLOBAL

But we only allow user to register persistent flush flags to the pmem MR
where it has the ability of persisting data across power cycles.

So registering a persistent access flag to a non-pmem MR will be rejected.

Link: https://lore.kernel.org/r/20221206130201.30986-5-lizhijian@fujitsu.com
CC: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

...

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Li Zhijian 2022-12-06 21:01:55 +08:00 • committed by Jason Gunthorpe

parent 668ce52d5e

commit 02ea0a5115

1 changed files with 20 additions and 2 deletions

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drivers/infiniband/sw/rxe/rxe_mr.c

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