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    SubjectRe: GEM-related desktop sluggishness due to linear-time arch_get_unmapped_area_topdown()
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    在 2011-03-29二的 10:22 -0400,Jerome Glisse写道:

    > Killer solution would be to have no mapping and a decent
    > upload/download ioctl that can take userpage.

    Doesn't this sound like GEM's read/write interface implemented by e.g.
    the i915 driver? But if I understand correctly, a mmap-like interface
    should still be necessary if we want to implement e.g. glMapBuffer()
    without extra copying.

    r6144

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