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    SubjectRe: How to map high memory for block io
    Pierre Ossman wrote:
    >
    > Doesn't seem like a generic solution is easily implemented. I'll start
    > hacking together some way of specifying that highmem isn't supported so
    > that mmc_block can indicate this to the block layer.
    >

    If I set the limit to BLK_BOUNCE_HIGH then (page_address(sg->page) +
    sg->offset) is guaranteed to be directly accessible for the entire
    sg->length on all architectures, right? This seems to be the assumption
    in the USB ub driver at least.

    Rgds
    Pierre
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