Commit 3f59b6c3 authored by Yishai Hadas's avatar Yishai Hadas Committed by Jason Gunthorpe

IB/mlx5: Add mmap support for VAR

Add mmap support for VAR, it uses the 'offset' command mode with
involvement of IB core APIs to find the previously allocated mmap entry.

Link: https://lore.kernel.org/r/20191212110928.334995-6-leon@kernel.orgSigned-off-by: default avatarYishai Hadas <yishaih@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 7be76bef
......@@ -2253,6 +2253,9 @@ static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev,
mentry = to_mmmap(entry);
pfn = (mentry->address >> PAGE_SHIFT);
if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR)
prot = pgprot_noncached(vma->vm_page_prot);
else
prot = pgprot_writecombine(vma->vm_page_prot);
ret = rdma_user_mmap_io(ucontext, vma, pfn,
entry->npages * PAGE_SIZE,
......
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