dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}

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[ Upstream commit 40ac971eab ]

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: 1b65c4e5a9 ("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>

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Roman Skakun 2021-07-16 11:39:34 +03:00 • committed by Greg Kroah-Hartman

parent 115e4f5b64

commit 8983766903

1 changed files with 10 additions and 2 deletions

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kernel/dma/ops_helpers.c

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