Commit 4a3b99bc authored by Long Li's avatar Long Li Committed by Leon Romanovsky
Browse files

RDMA/mana_ib: use the correct page size for mapping user-mode doorbell page 



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: 0266a177 ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: default avatarLong Li <longli@microsoft.com>
Link: https://patch.msgid.link/1725030993-16213-2-git-send-email-longli@linuxonhyperv.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 9e517a8e

drivers/infiniband/hw/mana/main.c

+3 −3
Original line number Diff line number Diff line
@@ -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;

}