Re: [PATCH] x86/alternatives: remove false sharing in poke_int3_handler()

From: Ingo Molnar
Date: Thu Mar 27 2025 - 17:06:45 EST



* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Tue, Mar 25, 2025 at 12:26:36PM +0100, Ingo Molnar wrote:
>
> > Yeah, so I do know what #BP is, but what the heck disambiguates the two
> > meanings of _bp and why do we have the above jungle of an inconsistent
> > namespace? :-)
> >
> > Picking _int3 would neatly solve all of that.
>
> Sure; the most obvious case where BP would make sense, the trap entry
> point, we already use int3 so yeah, make it int3 throughout.

Okay - I just sent out a series to do this. Found a few other things to
fix/improve along the way:

https://lore.kernel.org/r/20250327205355.378659-1-mingo@xxxxxxxxxx

Thanks,

Ingo