[Hypervisor Live Update] Notes from May 5, 2025

[Pasha Tatashin]

> Topics for the next meeting:
>
>  - 20 min: presentation of LUO v2 design
Slides:
https://docs.google.com/presentation/d/17uYuw_KkD-gOiA6a6vDgHGzj-gDbmj7mjAb7ENlkZ5o/edit?slide=id.p#slide=id.p

>  - check back on latest status of KHO series in mm staging trees and any
>    pending concerns
>    + including possible refcount issues for compound folios across KHO
>  - possibility of a Live Update Microconference for LPC this year
>  - discuss support for sharding of dax devices into arbitrary lengths
>  - discuss support for defaulting to fsdax and with optional devdax as
>    needed, provisioned by the kernel, on the command line without
>    additional tooling (ndctl)
>  - update on physical pool allocator that can be used to provide pages
>    for hugetlb, guest_memfd, and memfds
>  - SEV-SNP support for preserving guest memory and what foundational
>    components AMD can depend on, building on top of KHO v6 or KSTATE
>  - later: testing methodology to allow downstream consumers to qualify
>    that live update works from one version to another
>  - later: reducing blackout window during live update
>
> Please let me know if you'd like to propose additional topics for
> discussion, thank you!
>
> [1] https://marc.info/?l=linux-doc&m=174645437711873&q=mbox
>