linux-kernel - Re: [PATCH v4 15/16] module: Move where we mark modules RO,X

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Message-ID: <20191021154452.GC19358@hirez.programming.kicks-ass.net>
Date:   Mon, 21 Oct 2019 17:44:52 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, rostedt@...dmis.org,
        mhiramat@...nel.org, bristot@...hat.com, jbaron@...mai.com,
        torvalds@...ux-foundation.org, tglx@...utronix.de,
        mingo@...nel.org, namit@...are.com, hpa@...or.com, luto@...nel.org,
        ard.biesheuvel@...aro.org, jeyu@...nel.org
Subject: Re: [PATCH v4 15/16] module: Move where we mark modules RO,X

On Mon, Oct 21, 2019 at 05:34:25PM +0200, Peter Zijlstra wrote:
> So On IRC Josh suggested we use text_poke() for RELA. Since KLP is only
> available on Power and x86, and Power does not have STRICT_MODULE_RWX,
> the below should be sufficient.

And... s390 also has HAVE_LIVEPATCH and STRICT_MODULE_RWX, so let me
poke at that.