Add an operation to populate a part of a drm_mm with device
private memory. Clarify how migration using it is intended
to work.
v3:
- Kerneldoc fixes and updates (Matt Brost).
v4:
- More kerneldoc fixes. Rebase.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250619134035.170086-3-thomas.hellstrom@linux.intel.com
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