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| author | Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> | 2024-01-07 12:34:26 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2024-01-10 07:32:40 +0100 |
| commit | 2d2db7d40254d5fb53b11ebd703cd1ed0c5de7a1 (patch) | |
| tree | 5a150a56d66073cc7a291e7e772ae92c6a972353 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | f1479f0a4f53ef4fc12108a59caee61c39bc6843 (diff) | |
xen/gntdev: Fix the abuse of underlying struct page in DMA-buf import
DO NOT access the underlying struct page of an sg table exported
by DMA-buf in dmabuf_imp_to_refs(), this is not allowed.
Please see drivers/dma-buf/dma-buf.c:mangle_sg_table() for details.
Fortunately, here (for special Xen device) we can avoid using
pages and calculate gfns directly from dma addresses provided by
the sg table.
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://lore.kernel.org/r/20240107103426.2038075-1-olekstysh@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions