Re: [PATCH v4 0/5] memcg: nmi-safe kmem charging

[Michal Koutný]

Hello Shakeel.

On Sun, May 18, 2025 at 11:31:37PM -0700, Shakeel Butt <shakeel.butt@xxxxxxxxx> wrote:
> Users can attached their BPF programs at arbitrary execution points in
> the kernel and such BPF programs may run in nmi context. In addition,
> these programs can trigger memcg charged kernel allocations in the nmi
> context. However memcg charging infra for kernel memory is not equipped
> to handle nmi context for all architectures.

How much memory does this refer to? Is it unbound (in particular for
non-privileged eBPF)? Or is it rather negligible? (I assume the former
to make the series worth it.)

Thanks,
Michal

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