Memory preservation using LUO

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" summary

LUO is extended to preserve memory via memfd by serializing file map folios and supporting both normal folios and huge TLB backing; patches already preserve 1 GB huge pages on x86. The implementation counts preserved huge pages per edge state (example: five preserved pages) so early-boot allocation subtracts that number to avoid overallocating (avoiding a 90→95 page mismatch). Patches handle early memblock/kernel-alloc ordering, add a read-only early retrieve path, and are reported working with RFCs posted.

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" chapters (6)

1. 0:00Introduction to LUO
2. 1:07Huge TLB challenges
3. 5:03KO scratch interaction
4. 8:56Early boot allocation fixes
5. 10:43Early access to LUO data
6. 13:11Q&A