This is a note to let you know that I've just added the patch titled
RDMA/efa: Fix unsupported page sizes in device
to the 5.10-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-efa-fix-unsupported-page-sizes-in-device.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 83716974e2c8c62d25ba01bbe0edf001ebdface6
Author: Yonatan Nachum <ynachum@xxxxxxxxxx>
Date: Thu May 11 11:51:03 2023 +0000
RDMA/efa: Fix unsupported page sizes in device
[ Upstream commit 866422cdddcdf59d8c68e9472d49ba1be29b5fcf ]
Device uses 4KB size blocks for user pages indirect list while the
driver creates those blocks with the size of PAGE_SIZE of the kernel. On
kernels with PAGE_SIZE different than 4KB (ARM RHEL), this leads to a
failure on register MR with indirect list because of the miss
communication between driver and device.
Fixes: 40909f664d27 ("RDMA/efa: Add EFA verbs implementation")
Link: https://lore.kernel.org/r/20230511115103.13876-1-ynachum@xxxxxxxxxx
Reviewed-by: Firas Jahjah <firasj@xxxxxxxxxx>
Reviewed-by: Michael Margolin <mrgolin@xxxxxxxxxx>
Signed-off-by: Yonatan Nachum <ynachum@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
index 2ece682c7835b..9cf051818725c 100644
--- a/drivers/infiniband/hw/efa/efa_verbs.c
+++ b/drivers/infiniband/hw/efa/efa_verbs.c
@@ -1328,7 +1328,7 @@ static int pbl_continuous_initialize(struct efa_dev *dev,
*/
static int pbl_indirect_initialize(struct efa_dev *dev, struct pbl_context *pbl)
{
- u32 size_in_pages = DIV_ROUND_UP(pbl->pbl_buf_size_in_bytes, PAGE_SIZE);
+ u32 size_in_pages = DIV_ROUND_UP(pbl->pbl_buf_size_in_bytes, EFA_CHUNK_PAYLOAD_SIZE);
struct scatterlist *sgl;
int sg_dma_cnt, err;
