linux-kernel - Re: [PATCH v1 0/5] Implement livepatch on PPC32

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Message-ID: <20211213123338.65eda5a0@gandalf.local.home>
Date:   Mon, 13 Dec 2021 12:33:38 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Jiri Kosina <jikos@...nel.org>,
        Miroslav Benes <mbenes@...e.cz>,
        Petr Mladek <pmladek@...e.com>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        "Naveen N . Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "live-patching@...r.kernel.org" <live-patching@...r.kernel.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>
Subject: Re: [PATCH v1 0/5] Implement livepatch on PPC32

On Mon, 13 Dec 2021 17:30:48 +0000
Christophe Leroy <christophe.leroy@...roup.eu> wrote:

> Thanks, I will try that.
> 
> I can't find ftrace_graph_func() in s390. Does it mean that s390 doesn't 
> have a working function tracer anymore ?
> 
> I see your commit 0c0593b45c9b4 ("x86/ftrace: Make function graph use 
> ftrace directly") is dated 8 Oct 2021 while 5740a7c71ab6 ("s390/ftrace: 
> add HAVE_DYNAMIC_FTRACE_WITH_ARGS support") is 4 Oct 2021.

Hmm, maybe not. I can't test it.

This needs to be fixed if that's the case.

Thanks for bringing it up!

-- Steve