linux-kernel - Re: [PATCH] arm64: cpufeature: use static_branch_enable

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Date:   Thu, 27 Apr 2017 18:17:31 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Suzuki K Poulose <Suzuki.Poulose@....com>
Cc:     Thomas Gleixner <tglx@...utronix.de>, catalin.marinas@....com,
        will.deacon@....com, Peter Zijlstra <peterz@...radead.org>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: cpufeature: use static_branch_enable_cpuslocked()

On Thu, Apr 27, 2017 at 06:03:35PM +0100, Suzuki K Poulose wrote:
> On 27/04/17 17:35, Suzuki K Poulose wrote:
> >@@ -1092,7 +1093,9 @@ void check_local_cpu_capabilities(void)
> >
> > static void __init setup_feature_capabilities(void)
> > {
> >-	update_cpu_capabilities(arm64_features, "detected feature:");
> >+	get_online_cpus();
> >+	update_cpu_capabilities(arm6_features, "detected feature:");
> 
> s/arm6_features/arm64_features
> 
> And we need the following hunk:
> 
> diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
> index 62bdab4..19c359a 100644
> --- a/arch/arm64/kernel/cpufeature.c
> +++ b/arch/arm64/kernel/cpufeature.c
> @@ -1086,7 +1086,7 @@ void check_local_cpu_capabilities(void)
>          * advertised capabilities.
>          */
>         if (!sys_caps_initialised)
> -               update_cpu_errata_workarounds();
> +               update_secondary_cpu_errata_workarounds();
>         else
>                 verify_local_cpu_capabilities();
>  }
> 
> Sorry about that.

No worries; thanks for the fixups.

With those this is working for me, so I'll send this and Sebastian's
patch (with Ccs) as a new series.

> 
> Suzuki