• Keir Fraser's avatar
    [PATCH] AGP fix for Xen VMM · 07eee78e
    Keir Fraser authored
    When Linux is running on the Xen virtual machine monitor, physical
    addresses are virtualised and cannot be directly referenced by the AGP
    GART.  This patch fixes the GART driver for Xen by adding a layer of
    abstraction between physical addresses and 'GART addresses'.
    
    Architecture-specific functions are also defined for allocating and freeing
    the GATT.  Xen requires this to ensure that table really is contiguous from
    the point of view of the GART.
    
    These extra interface functions are defined as 'no-ops' for all existing
    architectures that use the GART driver.
    Signed-off-by: default avatarKeir Fraser <keir@xensource.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarDave Jones <davej@redhat.com>
    07eee78e
agp.h 575 Bytes