* [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index
@ 2025-02-05 10:30 Konstantin Taranov
2025-02-05 19:02 ` Long Li
2025-02-06 9:03 ` Leon Romanovsky
0 siblings, 2 replies; 3+ messages in thread
From: Konstantin Taranov @ 2025-02-05 10:30 UTC (permalink / raw)
To: kotaranov, shirazsaleem, sharmaajay, longli, jgg, leon
Cc: linux-rdma, linux-kernel
From: Konstantin Taranov <kotaranov@microsoft.com>
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@microsoft.com>
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
---
drivers/infiniband/hw/mana/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index ae1fb69..0b89fa0 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -177,7 +177,7 @@ 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;
--
2.43.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index
2025-02-05 10:30 [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index Konstantin Taranov
@ 2025-02-05 19:02 ` Long Li
2025-02-06 9:03 ` Leon Romanovsky
1 sibling, 0 replies; 3+ messages in thread
From: Long Li @ 2025-02-05 19:02 UTC (permalink / raw)
To: Konstantin Taranov, Konstantin Taranov, Shiraz Saleem,
sharmaajay@microsoft.com, jgg@ziepe.ca, leon@kernel.org
Cc: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
> Subject: [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell
> index
>
> From: Konstantin Taranov <kotaranov@microsoft.com>
>
> 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@microsoft.com>
> Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
> ---
> drivers/infiniband/hw/mana/main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/mana/main.c
> b/drivers/infiniband/hw/mana/main.c
> index ae1fb69..0b89fa0 100644
> --- a/drivers/infiniband/hw/mana/main.c
> +++ b/drivers/infiniband/hw/mana/main.c
> @@ -177,7 +177,7 @@ 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;
> --
> 2.43.0
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index
2025-02-05 10:30 [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index Konstantin Taranov
2025-02-05 19:02 ` Long Li
@ 2025-02-06 9:03 ` Leon Romanovsky
1 sibling, 0 replies; 3+ messages in thread
From: Leon Romanovsky @ 2025-02-06 9:03 UTC (permalink / raw)
To: kotaranov, shirazsaleem, sharmaajay, longli, jgg,
Konstantin Taranov
Cc: linux-rdma, linux-kernel
On Wed, 05 Feb 2025 02:30:05 -0800, Konstantin Taranov wrote:
> 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
>
>
Applied, thanks!
[1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index
https://git.kernel.org/rdma/rdma/c/29b7bb98234cc2
Best regards,
--
Leon Romanovsky <leon@kernel.org>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2025-02-05 10:30 [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index Konstantin Taranov
2025-02-05 19:02 ` Long Li
2025-02-06 9:03 ` Leon Romanovsky
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