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| /linux/drivers/iommu/iommufd/ |
| H A D | iova_bitmap.c | diff 4bbcbc6ea2fa379632a24c14cfb47aa603816ac6 Fri Feb 02 14:34:15 CET 2024 Joao Martins <joao.m.martins@oracle.com> iommufd/iova_bitmap: Consider page offset for the pages to be pinned
For small bitmaps that aren't PAGE_SIZE aligned *and* that are less than
512 pages in bitmap length, use an extra page to be able to cover the
entire range e.g. [1M..3G] which would be iterated more efficiently in a
single iteration, rather than two.
Fixes: b058ea3ab5af ("vfio/iova_bitmap: refactor iova_bitmap_set() to better handle page boundaries")
Link: https://lore.kernel.org/r/20240202133415.23819-10-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Tested-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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