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    SubjectRe: [PATCHv8 00/12] Contiguous Memory Allocator
    Russell King - ARM Linux <> writes:
    > Has anyone addressed my issue with it that this is wide-open for
    > abuse by allocating large chunks of memory, and then remapping
    > them in some way with different attributes, thereby violating the
    > ARM architecture specification?
    > In other words, do we _actually_ have a use for this which doesn't
    > involve doing something like allocating 32MB of memory from it,
    > remapping it so that it's DMA coherent, and then performing DMA
    > on the resulting buffer?

    Huge pages.

    Also, don't treat it as coherent memory and just flush/clear/invalidate
    cache before and after each DMA transaction. I never understood what's
    wrong with that approach.

    Best regards, _ _
    .o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o
    ..o | Computer Science, Michal "mina86" Nazarewicz (o o)
    ooo +--<>--<>--ooO--(_)--Ooo--

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