Re: [PATCH v6 09/12] x86/mm: enable broadcast TLB invalidation for multi-threaded processes

[Dave Hansen]

On 1/21/25 01:55, Peter Zijlstra wrote:
> Can't we just start with a very simple constant test and poke at things
> if/when its found to not work?

I'd prefer something simpler for now, too.

Let's just pick a sane number, maybe 16 or 32 for now, make it pokeable
in debugfs and make sure we have a way to tell when the PCID space is
exhausted.

Then we try and design a solution for the _actual_ cases where folks are
exhausting it.