From: Konstantin Taranov <kotaranov@linux.microsoft.com>
To: kotaranov@microsoft.com, shirazsaleem@microsoft.com,
sharmaajay@microsoft.com, longli@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
Date: Wed, 5 Feb 2025 02:30:05 -0800 [thread overview]
Message-ID: <1738751405-15041-1-git-send-email-kotaranov@linux.microsoft.com> (raw)
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
next reply other threads:[~2025-02-05 10:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-05 10:30 Konstantin Taranov [this message]
2025-02-05 19:02 ` [PATCH rdma-next 1/1] RDMA/mana_ib: Allocate PAGE aligned doorbell index Long Li
2025-02-06 9:03 ` Leon Romanovsky
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