Re: [RFC][PATCH] ftrace/x86: Emulate call function while updating in breakpoint handler

From: Peter Zijlstra
Date: Wed May 01 2019 - 15:42:22 EST

On Wed, May 01, 2019 at 09:33:28PM +0200, Jiri Kosina wrote:
> On Wed, 1 May 2019, Steven Rostedt wrote:
> > I never tested the 32 bit version of this. And we could just not
> > implement it (I don't think there's live kernel patching for it
> > either).
> That's correct, there is no livepatching on x86_32 (and no plans for
> it). CONFIG_LIVEPATCH is not available for 32bit builds at all.

We still want this for static_call(), even on 32bit.