From: longli@linuxonhyperv.com
To: Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,
Ajay Sharma <sharmaajay@microsoft.com>,
Konstantin Taranov <kotaranov@microsoft.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Long Li <longli@microsoft.com>,
stable@vger.kernel.org
Subject: [PATCH net] RDMA/mana_ib: fix a bug in calculating the wrong page table index when 64kb page table is used
Date: Wed, 28 Aug 2024 13:06:08 -0700 [thread overview]
Message-ID: <1724875569-12912-1-git-send-email-longli@linuxonhyperv.com> (raw)
From: Long Li <longli@microsoft.com>
MANA hardware uses 4k page size. When calculating the page table index,
it should use the hardware page size, not the system page size.
Cc: stable@vger.kernel.org
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-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 d13abc954d2a..f68f54aea820 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -383,7 +383,7 @@ static int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem
create_req->length = umem->length;
create_req->offset_in_page = ib_umem_dma_offset(umem, page_sz);
- create_req->gdma_page_type = order_base_2(page_sz) - PAGE_SHIFT;
+ create_req->gdma_page_type = order_base_2(page_sz) - MANA_PAGE_SHIFT;
create_req->page_count = num_pages_total;
ibdev_dbg(&dev->ib_dev, "size_dma_region %lu num_pages_total %lu\n",
--
2.17.1
next reply other threads:[~2024-08-28 20:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-28 20:06 longli [this message]
2024-08-28 20:06 ` [PATCH net] RDMA/mana_ib: use the correct page size for mapping user-mode doorbell page longli
2024-08-29 13:53 ` Simon Horman
2024-08-30 0:54 ` Long Li
2024-08-29 10:24 ` [PATCH net] RDMA/mana_ib: fix a bug in calculating the wrong page table index when 64kb page table is used Leon Romanovsky
2024-08-30 0:56 ` Long Li
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