Commit 3f59b6c3 authored Dec 12, 2019 by Yishai Hadas Committed by Jason Gunthorpe Jan 12, 2020

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>

parent 7be76bef

drivers/infiniband/hw/mlx5/main.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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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