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| author |   Jason Gunthorpe <jgg@nvidia.com> | 2026-06-04 15:03:13 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-06-08 13:39:20 -0300 |
| commit | badad6fad60def1b9805559dd81dbab3d97b82aa (patch) | |
| tree | a2741f7f3cce228316e7801ef5e996a78da8862a /tools/lib/python/kdoc/python_version.py | |
| parent | RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc (diff) | |
RDMA: During rereg_mr ensure that REREG_ACCESS is compatible
If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be
re-evaluated to ensure it is properly pinned as RW. Since the umem is
hidden inside each driver's mr struct add a ib_umem_check_rereg() function
that each driver has to call before processing IB_MR_REREG_ACCESS.
mlx4 has to retain its duplicate ib_access_writable check because it
implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items
in place sequentially while the MR is live, so it will continue to not
support this combination.
Cc: stable@vger.kernel.org
Fixes: b40656aa7d55 ("RDMA/umem: remove FOLL_FORCE usage")
Link: https://patch.msgid.link/r/0-v1-06fb1a2d6cf5+107-rereg_access_jgg@nvidia.com
Reported-by: Philip Tsukerman <philiptsukerman@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'tools/lib/python/kdoc/python_version.py')
0 files changed, 0 insertions, 0 deletions