refactor(mm): wrap FrameTracker in Arc for COW preparation (!8) · Merge requests · StellaOS / OSKernel2026-StellaOS · GitLab

StellaOS requested to merge feat/mm-cow into main May 21, 2026

frame_alloc/frame_alloc_more now return Arc
data_frames type changed to BTreeMap<VirtPageNum, Arc>
add frame_copy() helper for COW page fault
remove SV39-specific assertion in Linear map_one
adapt virtio QUEUE_FRAMES type