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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-03-15 14:31:32 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 19:42:46 -0700 |
| commit | 61883d3c32418f16e35e030ca0cfd5d2de95a649 (patch) | |
| tree | 6c53d37051e0158aba6a03e1f6a7fc8f1fa299a8 /kernel/kallsyms_selftest.h | |
| parent | 7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb (diff) | |
| download | lwn-61883d3c32418f16e35e030ca0cfd5d2de95a649.tar.gz lwn-61883d3c32418f16e35e030ca0cfd5d2de95a649.zip | |
iommu: fix MAX_ORDER usage in __iommu_dma_alloc_pages()
MAX_ORDER is not inclusive: the maximum allocation order buddy allocator
can deliver is MAX_ORDER-1.
Fix MAX_ORDER usage in __iommu_dma_alloc_pages().
Also use GENMASK() instead of hard to read "(2U << order) - 1" magic.
Link: https://lkml.kernel.org/r/20230315113133.11326-10-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/kallsyms_selftest.h')
0 files changed, 0 insertions, 0 deletions