This is a note to let you know that I've just added the patch titled
RDMA/mana_ib: Allocate PAGE aligned doorbell index
to the 6.6-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-mana_ib-allocate-page-aligned-doorbell-index.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ae031e3f5557cd9ad4493fdb764b1c89f7cd549f
Author: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
Date: Wed Feb 5 02:30:05 2025 -0800
RDMA/mana_ib: Allocate PAGE aligned doorbell index
[ Upstream commit 29b7bb98234cc287cebef9bccf638c2e3f39be71 ]
Allocate a PAGE aligned doorbell index to ensure each process gets a
separate PAGE sized doorbell area space remapped to it in mana_ib_mmap
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Shiraz Saleem <shirazsaleem@xxxxxxxxxxxxx>
Signed-off-by: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
Link: https://patch.msgid.link/1738751405-15041-1-git-send-email-kotaranov@xxxxxxxxxxxxxxxxxxx
Reviewed-by: Long Li <longli@xxxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 85717482a616e..6fa9b12532997 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -180,7 +180,7 @@ static int mana_gd_allocate_doorbell_page(struct gdma_context *gc,
req.resource_type = GDMA_RESOURCE_DOORBELL_PAGE;
req.num_resources = 1;
- req.alignment = 1;
+ req.alignment = PAGE_SIZE / MANA_PAGE_SIZE;
/* Have GDMA start searching from 0 */
req.allocated_resources = 0;
