Maarten Lankhorst d8b52a02cb
drm/xe: Implement stolen memory. ...
This adds support for stolen memory, with the same allocator as
vram_mgr. This allows us to skip a whole lot of copy-paste,
by re-using parts of xe_ttm_vram_mgr.
The stolen memory may be bound using VM_BIND, so it performs like any
other memory region.
We should be able to map a stolen BO directly using the physical memory
location instead of through GGTT even on old platforms, but I don't know
what the effects are on coherency.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com >
Reviewed-by: Matthew Brost <matthew.brost@intel.com >
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com >
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