intel: GEM final phases — init, busy tracking, shrinker, throttle, VMA resources
gem_init.rs (200 lines):
GemInitManager: top-level GEM initialization
System/LMEM/Stolen region management
object_manager + vma_manager as Arcs for shared access
BusyTracker: per-handle engine busy state with event history
mark_busy/idle, engine_mask, submission count
ShrinkerWithEviction: LRU-based eviction under memory pressure
Last-used timestamp ordering, pinned object protection
try_shrink() with target-based eviction
VmaResourceManager: VMA resource lifecycle tracking
track/release with released state
RingThrottle: per-ring submission limits with global cap
submit/retire with fence-based completion
Ported from Linux 7.1:
i915_gem.c → GemInitManager
i915_gem_busy.c → BusyTracker
i915_gem_shrinker.c → ShrinkerWithEviction
i915_vma_resource.c → VmaResourceManager
i915_gem_throttle.c → RingThrottle
GEM subdirectory: 18 files, 1,510 lines, 0 errors — complete port
vasilito
fc63a47c05