• Russell King's avatar
    ARM: DMA coherent allocator: align remapped addresses · 5bc23d32
    Russell King authored
    The DMA coherent remap area is used to provide an uncached mapping
    of memory for coherency with DMA engines.  Currently, we look for
    any free hole which our allocation will fit in with page alignment.
    However, this can lead to fragmentation of the area, and allows small
    allocations to cross L1 entry boundaries.  This is undesirable as we
    want to move towards allocating sections of memory.
    Align allocations according to the size, limiting the alignment between
    the page and section sizes.
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>