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

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>
This commit is contained in:
Long Li 2024-08-30 08:16:33 -07:00 committed by Greg Kroah-Hartman
parent 4ac6371229
commit 83b39493cd
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/mana/main.c
View File

@ -460,13 +460,13 @@ 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;
}