linux-kernel - Re: [PATCH v13 7/7] arm64: smp: Mark IPI globals as __ro_after

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Message-ID: <CAE-0n52v7kcfiX3=4PKUPJpiCm4rmSr8xpKnaD+Q4-BS9t_prg@mail.gmail.com>
Date:   Wed, 6 Sep 2023 16:45:55 -0500
From:   Stephen Boyd <swboyd@...omium.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sumit Garg <sumit.garg@...aro.org>,
        Will Deacon <will@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Lecopzer Chen <lecopzer.chen@...iatek.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Tomohiro Misono <misono.tomohiro@...itsu.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Masayoshi Mizuma <msys.mizuma@...il.com>,
        Stephane Eranian <eranian@...gle.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        kgdb-bugreport@...ts.sourceforge.net,
        linux-perf-users@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>, ito-yuichi@...itsu.com,
        Chen-Yu Tsai <wenst@...omium.org>, jpoimboe@...nel.org,
        linux-kernel@...r.kernel.org, scott@...amperecomputing.com,
        vschneid@...hat.com
Subject: Re: [PATCH v13 7/7] arm64: smp: Mark IPI globals as __ro_after_init

Quoting Douglas Anderson (2023-09-06 09:03:02)
> Mark the three IPI-related globals in smp.c as "__ro_after_init" since
> they are only ever set in set_smp_ipi_range(), which is marked
> "__init". This is a better and more secure marking than the old
> "__read_mostly".
>
> Suggested-by: Stephen Boyd <swboyd@...omium.org>
> Acked-by: Mark Rutland <mark.rutland@....com>
> Tested-by: Chen-Yu Tsai <wenst@...omium.org>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>