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

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Message-ID: <87r1b5p4hf.fsf@mpe.ellerman.id.au>
Date:   Thu, 25 Nov 2021 09:34:52 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        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>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        "Naveen N . Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:     live-patching@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/5] Implement livepatch on PPC32

Christophe Leroy <christophe.leroy@...roup.eu> writes:
> This series implements livepatch on PPC32.
>
> This is largely copied from what's done on PPC64.
>
> Christophe Leroy (5):
>   livepatch: Fix build failure on 32 bits processors
>   powerpc/ftrace: No need to read LR from stack in _mcount()
>   powerpc/ftrace: Add module_trampoline_target() for PPC32
>   powerpc/ftrace: Activate HAVE_DYNAMIC_FTRACE_WITH_REGS on PPC32
>   powerpc/ftrace: Add support for livepatch to PPC32

I think we know patch 5 will need a respin because of the STRICT RWX vs
livepatching issue (https://github.com/linuxppc/issues/issues/375).

So should I take patches 2,3,4 for now?

cheers