On Tue, 11 Feb 2025 at 22:09, Rik van Riel <riel@xxxxxxxxxxx> wrote: > @@ -798,6 +829,8 @@ void switch_mm_irqs_off(struct mm_struct *unused, struct mm_struct *next, > if (IS_ENABLED(CONFIG_PROVE_LOCKING)) > WARN_ON_ONCE(!irqs_disabled()); > > + tlbsync(); > + Reminder to add comments or move this: https://lore.kernel.org/linux-kernel/e8a156d4c8f5db07cf03b55fb81c75d523cac680.camel@xxxxxxxxxxx/ I actually sent another reply which is not yet visible in Lore continuing to advocate for doing this in arch_start_context_switch() - I won't die on that hill but I do think we need either that or the commentary.