Re: [PATCHv1, RFC 0/8] Boot-time switching between 4- and 5-level paging

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> Even ignoring all of above, I don't see much benefit of having per-mm
> switching. It adds complexity without much benefit -- saving few lines of
> logic during early boot doesn't look as huge win to me.

Also giving kthreads a different VM would prevent lazy VM switching
when switching from/to idle, which can be quite important for performance
when doing fast IO.

-Andi

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