netdev - [PATCH net] RDMA/mana_ib: fix a bug in calculating the wrong page table index when 64kb page table is used

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Message-Id: <1724875569-12912-1-git-send-email-longli@linuxonhyperv.com>
Date: Wed, 28 Aug 2024 13:06:08 -0700
From: longli@...uxonhyperv.com
To: Jason Gunthorpe <jgg@...pe.ca>,
	Leon Romanovsky <leon@...nel.org>,
	Ajay Sharma <sharmaajay@...rosoft.com>,
	Konstantin Taranov <kotaranov@...rosoft.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: linux-rdma@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Long Li <longli@...rosoft.com>,
	stable@...r.kernel.org
Subject: [PATCH net] RDMA/mana_ib: fix a bug in calculating the wrong page table index when 64kb page table is used

From: Long Li <longli@...rosoft.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@...r.kernel.org
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Long Li <longli@...rosoft.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