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Subject: Re: [PATCH v4 4/5] arm64: Verify CPU errata work arounds on
 hotplugged CPU
To: Catalin Marinas <catalin.marinas@arm.com>
References: <1461324335-5081-1-git-send-email-suzuki.poulose@arm.com>
 <1461324335-5081-5-git-send-email-suzuki.poulose@arm.com>
 <20160422134053.GL2998@e104818-lin.cambridge.arm.com>
Cc: linux-arm-kernel@lists.infradead.org, mark.rutland@arm.com,
        marc.zyngier@arm.com, will.deacon@arm.com,
        linux-kernel@vger.kernel.org, Andre Przywara <andre.przywara@arm.com>,
        Vadim.Lomovtsev@caviumnetworks.com
From: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Message-ID: <571A2A9D.7070702@arm.com>
Date: Fri, 22 Apr 2016 14:43:57 +0100
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On 22/04/16 14:40, Catalin Marinas wrote:
> On Fri, Apr 22, 2016 at 12:25:34PM +0100, Suzuki K. Poulose wrote:
>> CPU Errata work arounds are detected and applied to the
>> kernel code at boot time and the data is then freed up.
>> If a new hotplugged CPU requires a work around which
>> was not applied at boot time, there is nothing we can
>> do but simply fail the booting.
>>
>> Cc: Will Deacon <will.deacon@arm.com>
>> Cc: Mark Rutland <mark.rutland@arm.com>
>> Cc: Andre Przywara <andre.przywara@arm.com>
>> Cc: Catalin Marinas <catalin.marinas@arm.com>
>> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
>
> I think Will commented on this previously. Was a decision made to leave
> this patch as it is and subsequently add support for enabling local
> workarounds for hot-plugged CPUs? I'm fine with this given that most

Yes. Applying work arounds for a hot-plugged CPU will be addressed in a
new series. I updated the cover letter, but missed to update the same here.

>
> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>

Thanks
Suzuki