Subject: Re: [PATCH v2 3/8] powerpc/debug: implement HAVE_USER_RETURN_NOTIFIER

From: Thomas Gleixner <[email-masked]>
Date: Wed, 13 Nov 2024 07:48:37 +0100

On Mon, Nov 11 2024 at 11:19, Luming Yu wrote:
> enable the common entry of user return notifier for powerpc as
> a debug feature.

What's the debug feature?

There are ZERO user return notifiers registered in PowerPC, so your
"debug feature" is just a waste of CPU cycles.

Thanks,

        tglx