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由 Jerome Glisse 提交于
This add the support for the new fault callback, does change anything from driver point of view, thought it should allow nouveau to add support for unmappable VRAM. Improvement: store the aperture base in a variable so that we don't call a function to get it on each fault. Patch hasn't been tested on any hw. V2 don't derefence bo->mem.mm_node as it's not NULL only for VRAM or GTT V3 update after io_mem_reserve/io_mem_free callback balancing V4 callback has to ioremap V5 ioremap is done by ttm Signed-off-by: NJerome Glisse <jglisse@redhat.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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