Since 
0d0b3e7443bed6b49cb90fe7ddc4b5578a83a88d
drm/radeon: use cached memory when evicting for vram on non agp
evicting from TTM would try and evict to TTM instead of system,
not so good.
This should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=58272
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
        }
        if (domain & RADEON_GEM_DOMAIN_CPU) {
                if (rbo->rdev->flags & RADEON_IS_AGP) {
-                       rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT;
+                       rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_SYSTEM;
                } else {
-                       rbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
+                       rbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
                }
        }
        if (!c)