diff mbox series

[SRU,oracular:linux-azure,2/2] RDMA/mana_ib: use the correct page size for mapping user-mode doorbell page

Message ID 20241009151527.671047-3-john.cabaj@canonical.com
State New
Headers show
Series None | expand

Commit Message

John Cabaj Oct. 9, 2024, 3:15 p.m. UTC 
From: Long Li <longli@microsoft.com>

BugLink: https://bugs.launchpad.net/bugs/2084052

When mapping doorbell page from user-mode, the driver should use the system
page size as this memory is allocated via mmap() from user-mode.

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>
Link: https://patch.msgid.link/1725030993-16213-2-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
(cherry picked from commit 4a3b99bc04e501b816db78f70064e26a01257910)
Signed-off-by: John Cabaj <john.cabaj@canonical.com>
---
 drivers/infiniband/hw/mana/main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index f68f54aea820..67c2d43135a8 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -511,13 +511,13 @@  int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
 	      PAGE_SHIFT;
 	prot = pgprot_writecombine(vma->vm_page_prot);
 
-	ret = rdma_user_mmap_io(ibcontext, vma, pfn, gc->db_page_size, prot,
+	ret = rdma_user_mmap_io(ibcontext, vma, pfn, PAGE_SIZE, prot,
 				NULL);
 	if (ret)
 		ibdev_dbg(ibdev, "can't rdma_user_mmap_io ret %d\n", ret);
 	else
-		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %u, ret %d\n",
-			  pfn, gc->db_page_size, ret);
+		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %lu, ret %d\n",
+			  pfn, PAGE_SIZE, ret);
 
 	return ret;
 }