From 3f59b6c3e600f9665dcf5b8e566cd7b778f03045 Mon Sep 17 00:00:00 2001 From: Yishai Hadas Date: Thu, 12 Dec 2019 13:09:28 +0200 Subject: 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 Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') 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, -- cgit v1.2.3