linux-kernel - Re: [PATCH 0/2] Allwinner A64 timer workaround

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Message-ID: <alpine.DEB.2.21.1807041151530.1816@nanos.tec.linutronix.de>
Date:   Wed, 4 Jul 2018 12:00:11 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Marc Zyngier <marc.zyngier@....com>
cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Samuel Holland <samuel@...lland.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, Mark Rutland <Mark.Rutland@....com>
Subject: Re: [PATCH 0/2] Allwinner A64 timer workaround

On Wed, 4 Jul 2018, Marc Zyngier wrote:
> On 04/07/18 09:23, Daniel Lezcano wrote:
> > 
> > If the patches fix a bug which already exist, it makes sense to
> > propagated the fix back to the stable versions.
>
> That's your call, but I'm not supportive of that decision, specially as
> we have information from the person developing the workaround that this
> doesn't fully address the issue.

The patches should not be applied at all. Simply because they don't fix the
issue completely.

>From a quick glance at various links and information about this, this very
much smells like the FSL_ERRATUM_A008585.

Has that been tried? It looks way more robust than the magic 11 bit
crystal ball logic.

Thanks,

	tglx