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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2023-03-15 14:31:32 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-04-05 19:42:46 -0700
commit61883d3c32418f16e35e030ca0cfd5d2de95a649 (patch)
tree6c53d37051e0158aba6a03e1f6a7fc8f1fa299a8 /mm/memory_hotplug.c
parent7a16d7c7619b26e5e9bfc1360de0d02a94f7d9eb (diff)
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 'mm/memory_hotplug.c')
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