• Jerome Glisse's avatar
    agp: use scratch page on memory remove and at GATT creation V4 · 61cf0593
    Jerome Glisse authored
    Convert most AGP chipset to use scratch page as default entries.
    This help avoiding GPU querying 0 address and trigger computer
    fault. With KMS and memory manager we bind/unbind AGP memory
    constantly and it seems that some GPU are still doing AGP
    traffic even after GPU report being idle with the memory segment.
    
    Tested (radeon GPU KMS + Xorg + compiz + glxgears + quake3) on :
    - SIS 1039:0001 & 1039:0003
    - Intel 865 8086:2571
    
    Compile tested for other bridges
    
    V2 enable scratch page on uninorth
    V3 fix unbound check in uninorth insert memory (Michel Dänzer)
    V4 rebase on top of drm-next branch with the lastest intel AGP
       changeset (stable should use version V3 of the patch)
    Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
    Signed-off-by: default avatarMichel Dänzer <michel@daenzer.net>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    61cf0593
ati-agp.c 14.6 KB