• Robin Murphy's avatar
    iommu/iova: Extend cached node lookup condition · 62280cf2
    Robin Murphy authored
    When searching for a free IOVA range, we optimise the tree traversal
    by starting from the cached32_node, instead of the last node, when
    limit_pfn is equal to dma_32bit_pfn. However, if limit_pfn happens to
    be smaller, then we'll go ahead and start from the top even though
    dma_32bit_pfn is still a more suitable upper bound. Since this is
    clearly a silly thing to do, adjust the lookup condition appropriately.
    Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
    Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
    62280cf2
iova.c 23.5 KB