Roman Skakun 8983766903 dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}
[ Upstream commit 40ac971eab89330d6153e7721e88acd2d98833f9 ]

xen-swiotlb can use vmalloc backed addresses for dma coherent allocations
and uses the common helpers.  Properly handle them to unbreak Xen on
ARM platforms.

Fixes: 1b65c4e5a9af ("swiotlb-xen: use xen_alloc/free_coherent_pages")
Signed-off-by: Roman Skakun <roman_skakun@epam.com>
Reviewed-by: Andrii Anisov <andrii_anisov@epam.com>
[hch: split the patch, renamed the helpers]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-28 14:35:38 +02:00
..
2020-10-15 14:43:29 -07:00