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Commit cc5a673d authored by Yonatan Nachum's avatar Yonatan Nachum Committed by Greg Kroah-Hartman
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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: 40909f66 ("RDMA/efa: Add EFA verbs implementation")
Link: https://lore.kernel.org/r/20230511115103.13876-1-ynachum@amazon.com


Reviewed-by: default avatarFiras Jahjah <firasj@amazon.com>
Reviewed-by: default avatarMichael Margolin <mrgolin@amazon.com>
Signed-off-by: default avatarYonatan Nachum <ynachum@amazon.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent cf0b1e54

drivers/infiniband/hw/efa/efa_verbs.c

+1 −1
Original line number Diff line number Diff line
@@ -1231,7 +1231,7 @@ 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;