This is a note to let you know that I've just added the patch titled
RDMA/mlx5: Adding remote atomic access flag to updatable flags
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-mlx5-adding-remote-atomic-access-flag-to-updata.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cebe62bf220c76fc27707f28ff90d8e9f053a8ef
Author: Or Har-Toov <ohartoov@xxxxxxxxxx>
Date: Wed Apr 3 13:36:01 2024 +0300
RDMA/mlx5: Adding remote atomic access flag to updatable flags
[ Upstream commit 2ca7e93bc963d9ec2f5c24d117176851454967af ]
Currently IB_ACCESS_REMOTE_ATOMIC is blocked from being updated via UMR
although in some cases it should be possible. These cases are checked in
mlx5r_umr_can_reconfig function.
Fixes: ef3642c4f54d ("RDMA/mlx5: Fix error unwinds for rereg_mr")
Signed-off-by: Or Har-Toov <ohartoov@xxxxxxxxxx>
Link: https://lore.kernel.org/r/24dac73e2fa48cb806f33a932d97f3e402a5ea2c.1712140377.git.leon@xxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 7f7b1f59b5f05..ecc111ed5d86e 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1572,7 +1572,8 @@ static bool can_use_umr_rereg_access(struct mlx5_ib_dev *dev,
unsigned int diffs = current_access_flags ^ target_access_flags;
if (diffs & ~(IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ | IB_ACCESS_RELAXED_ORDERING))
+ IB_ACCESS_REMOTE_READ | IB_ACCESS_RELAXED_ORDERING |
+ IB_ACCESS_REMOTE_ATOMIC))
return false;
return mlx5r_umr_can_reconfig(dev, current_access_flags,
target_access_flags);
