From: Yishai Hadas <yishaih@xxxxxxxxxxxx> Add mmap support for VAR, it uses the 'offset' command mode with involvement of IB core APIs to find the previously allocated mmap entry. Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx> --- drivers/infiniband/hw/mlx5/main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 873480b07686..52bc86ab9490 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, -- 2.20.1
