diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2019-12-12 12:09:28 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-01-13 00:49:13 +0100 |
| commit | 3f59b6c3e600f9665dcf5b8e566cd7b778f03045 (patch) | |
| tree | 0d1a1d17c8c4155313f06df129df758da1b04d0f | |
| parent | IB/mlx5: Introduce VAR object and its alloc/destroy methods (diff) | |
| download | linux-3f59b6c3e600f9665dcf5b8e566cd7b778f03045.tar.xz linux-3f59b6c3e600f9665dcf5b8e566cd7b778f03045.zip | |
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.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 433ed48425ad..97bcf01960ae 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2253,7 +2253,10 @@ static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev, mentry = to_mmmap(entry); pfn = (mentry->address >> PAGE_SHIFT); - prot = pgprot_writecombine(vma->vm_page_prot); + 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, prot, |