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| author |   Yong Wu <yong.wu@mediatek.com> | 2021-01-07 20:29:06 +0800 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2021-01-27 12:32:27 +0000 |
| commit | 862c3715de8f3e5350489240c951d697f04bd8c9 (patch) | |
| tree | d6b5a2361e5fd76af8647003da0e9fcb18557855 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | iommu/mediatek: Add iotlb_sync_map to sync whole the iova range (diff) | |
| download | linux-dev-862c3715de8f3e5350489240c951d697f04bd8c9.tar.xz linux-dev-862c3715de8f3e5350489240c951d697f04bd8c9.zip | |
iommu: Switch gather->end to the inclusive end
Currently gather->end is "unsigned long" which may be overflow in
arch32 in the corner case: 0xfff00000 + 0x100000(iova + size).
Although it doesn't affect the size(end - start), it affects the checking
"gather->end < end"
This patch changes this "end" to the real end address
(end = start + size - 1). Correspondingly, update the length to
"end - start + 1".
Fixes: a7d20dc19d9e ("iommu: Introduce struct iommu_iotlb_gather for batching TLB flushes")
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210107122909.16317-5-yong.wu@mediatek.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions