linux-kernel - Re: [RFC PATCH 0/7] Unify SMP stop generic logic to common code

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Message-ID: <2b4a744c-ea20-00e6-828f-7be125326792@arm.com>
Date:   Mon, 26 Aug 2019 20:33:23 +0100
From:   Cristian Marussi <cristian.marussi@....com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        mark.rutland@....com, peterz@...radead.org,
        catalin.marinas@....com, takahiro.akashi@...aro.org,
        james.morse@....com, hidehiro.kawai.ez@...achi.com,
        tglx@...utronix.de, will@...nel.org, dave.martin@....com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH 0/7] Unify SMP stop generic logic to common code

Hi Christoph

thanks for the review.

On 8/26/19 4:34 PM, Christoph Hellwig wrote:
> On Fri, Aug 23, 2019 at 12:57:13PM +0100, Cristian Marussi wrote:
>> An architecture willing to rely on this SMP common logic has to define its
>> own helpers and set CONFIG_ARCH_USE_COMMON_SMP_STOP=y.
>> The series wire this up for arm64.
>>
>> Behaviour is not changed for architectures not adopting this new common
>> logic.
> 
> Seens like this common code only covers arm64.  I think we should
> generally have at least two users for common code.
> 

Yes absolutely, but this RFC was an attempt at first to explore if this
approach was deemed sensible upstream or not, so I wired up only arm64 for now.

Thanks

Cristian