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

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BugLink: https://bugs.launchpad.net/bugs/2089884

commit 4a3b99bc04e501b816db78f70064e26a01257910 upstream.

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: 0266a17763 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Long Li
2024-08-30 08:16:33 -07:00
committed by Mehmet Basaran
parent ce7266d5cd
commit 1c6f36e4b6
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/infiniband/hw/mana/main.c
+3 -3
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@@ -513,13 +513,13 @@ 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;
}