[PATCHv2] drm/ttm: restructure to allow driver to plug in alternate memory manager

From: Ben Skeggs Nouveau will need this on GeForce 8 and up to account for the GPU reordering physical VRAM for some memory types. v2: rebase to include nvc0_instmem.c changes Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bo.c | 12 ++- drivers/gpu/drm/nouveau/nouveau_

[PATCHv2] drm/ttm: restructure to allow driver to plug in alternate memory manager

From: Ben Skeggs Nouveau will need this on GeForce 8 and up to account for the GPU reordering physical VRAM for some memory types. v2: rebase to include nvc0_instmem.c changes Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bo.c | 12 ++- drivers/gpu/drm/nouveau/nouveau_