[PATCH v4 RESEND] powerpc: Replace kretprobe code with rethook on powerpc

[Andrii Nakryiko]

On Sun, Sep 8, 2024 at 6:11 AM Masami Hiramatsu <mhiramat at kernel.org> wrote:
>
> On Fri, 06 Sep 2024 21:52:52 +1000
> Michael Ellerman <patch-notifications at ellerman.id.au> wrote:
>
> > On Fri, 30 Aug 2024 07:31:31 -0400, Abhishek Dubey wrote:
> > > This is an adaptation of commit f3a112c0c40d ("x86,rethook,kprobes:
> > > Replace kretprobe with rethook on x86") to powerpc.
> > >
> > > Rethook follows the existing kretprobe implementation, but separates
> > > it from kprobes so that it can be used by fprobe (ftrace-based
> > > function entry/exit probes). As such, this patch also enables fprobe
> > > to work on powerpc. The only other change compared to the existing
> > > kretprobe implementation is doing the return address fixup in
> > > arch_rethook_fixup_return().
> > >
> > > [...]
> >
> > Applied to powerpc/next.
> >
> > [1/1] powerpc: Replace kretprobe code with rethook on powerpc
> >       https://git.kernel.org/powerpc/c/19f1bc3fb55452739dd3d56cfd06c29ecdbe3e9f
>
> Thanks, and sorry for late reply, but I don't have any objection.
>

It's weird that powerpc and a bunch of other arguably less popular
architectures have rethook implementation, but ARM64 doesn. Any reason
why that is the case, Masami?

> >
> > cheers
>
>
> --
> Masami Hiramatsu (Google) <mhiramat at kernel.org>
>