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Date:   Wed, 1 May 2019 21:41:32 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Jiri Kosina <jikos@kernel.org>
Cc:     Steven Rostedt <rostedt@goodmis.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Nicolai Stange <nstange@suse.de>,
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        "H. Peter Anvin" <hpa@zytor.com>,
        the arch/x86 maintainers <x86@kernel.org>,
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        Tim Chen <tim.c.chen@linux.intel.com>,
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        Mimi Zohar <zohar@linux.ibm.com>,
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        Masahiro Yamada <yamada.masahiro@socionext.com>,
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Subject: Re: [RFC][PATCH] ftrace/x86: Emulate call function while updating in
 breakpoint handler
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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.