Re: [patch V2 1/8] signal: Prevent exec() race

[Peter Zijlstra]

On Wed, Sep 09, 2026 at 11:55:19AM +0200, Peter Zijlstra wrote:
> D-E is a UNLOCK+LOCK hand-over, which is not quite the same as
> RELEASE+ACQUIRE. Specifically, we have:
> 
>   RELEASE+ACQUIRE: RCpc,  only the CPUs involved agree on the ordering
>   UNLOCK+LOCK:     RCtso, the hand-over is store-ordering
> 

For those that case: UNLOCK+LOCK is RCsc on all architectures except
Power.