memory: streamline fork and COW teardown - #288
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Make ordinary fork publish lazy child leaves while preserving eager huge-page mappings. Batch COW references, protect only writable transitions, bulk-publish and coalesce regions, and reduce final rmap/page-table teardown work while retaining PCID/ASID invalidation guarantees. Increase aarch64 AP stacks to 64 KiB after the old 4 KiB stack was proven to underflow into a live L3 table during nested executor/IRQ work. Refresh the VT smoke for the now-implemented ioctls. Model: OpenAI Codex (GPT-5) Co-Authored-By: OpenAI Codex <noreply@openai.com>
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Make ordinary fork publish lazy child leaves while preserving eager huge-page mappings. Batch COW references, protect only writable transitions, bulk-publish and coalesce regions, and reduce final rmap/page-table teardown work while retaining PCID/ASID invalidation guarantees.
Increase aarch64 AP stacks to 64 KiB after the old 4 KiB stack was proven to underflow into a live L3 table during nested executor/IRQ work. Refresh the VT smoke for the now-implemented ioctls.
Model: OpenAI Codex (GPT-5)