• Dave Airlie's avatar
    drm/radeon: fix problem with changing active VRAM size. (v2) · 53595338
    Dave Airlie authored
    So we used to use lpfn directly to restrict VRAM when we couldn't
    access the unmappable area, however this was removed in
    93225b0d as it also restricted
    the gtt placements. However it was only later noticed that this
    broke on some hw.
    
    This removes the active_vram_size, and just explicitly sets it
    when it changes, TTM/drm_mm will always use the real_vram_size,
    and the active vram size will change the TTM size used for lpfn
    setting.
    
    We should re-work the fpfn/lpfn to per-placement at some point
    I suspect, but that is too late for this kernel.
    
    Hopefully this addresses:
    https://bugs.freedesktop.org/show_bug.cgi?id=35254
    
    v2: fix reported useful VRAM size to userspace to be correct.
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    53595338
r600.c 112 KB