Re: [PATCH v2 0/9] s390: Improve this_cpu operations

[Peter Zijlstra]

On Thu, Mar 19, 2026 at 01:04:54PM +0100, Heiko Carstens wrote:
> v2:
> 
> - Add proper PERCPU_PTR cast to most patches to avoid tons of sparse
>   warnings
> 
> - Add missing __packed attribute to insn structure [Sashiko [2]]
> 
> - Fix inverted if condition [Sashiko [2]]
> 
> - Add missing user_mode() check [Sashiko [2]]
> 
> - Move percpu_entry() call in front of irqentry_enter() call in all
>   entry paths to avoid that potential this_cpu() operations overwrite
>   the not-yet saved percpu code section indicator  [Sashiko [2]]

Would it make sense to add arch hooks to irqentry_{enter,exit}() ?