Re: [RFC PATCH v3 0/6] Direct Map Removal for guest_memfd

[Dave Hansen]

On 11/1/24 12:29, Manwaring, Derek wrote:
> As far as performance, are you talking about just the fracturing or
> something beyond that? The data Mike brought to LSFMMBPF 2023 showed the
> perf impact from direct map fragmentation for memfd_secret isn't "that
> bad" [1].

Just the fracturing.

Mike's data are interesting, but I still think we're pretty far away
from saying that the kernel doesn't need large mappings.