linux-kernel - Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: arch_timer: Workaround for Allwinner A64 timer instability

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Message-ID: <CA+E=qVc-BA_W8O1qpkKgg5pDax-Jbvmpc-TB7gWB7CfYAxXCXQ@mail.gmail.com>
Date:   Wed, 4 Dec 2019 07:37:13 -0800
From:   Vasily Khoruzhick <anarsoul@...il.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Samuel Holland <samuel@...lland.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        devicetree <devicetree@...r.kernel.org>,
        arm-linux <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        Maxime Ripard <mripard@...nel.org>
Subject: Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: arch_timer: Workaround
 for Allwinner A64 timer instability

On Wed, Dec 4, 2019 at 4:21 AM Marc Zyngier <maz@...nel.org> wrote:
>
> [please note that my email address has changed]
>
> On 2019-12-04 04:18, Vasily Khoruzhick wrote:
>
> [...]
>
> > Unfortunately this patch doesn't completely eliminate the jumps.
> > There
> > have been reports from users who still saw 95y jump even with the
> > patch applied.
> >
> > Personally I've seen it once or twice on my Pine64-LTS.
> >
> > Looks like we need bigger hammer. Does anyone have any idea what it
> > could be?
>
> Which kernel version did you see this happening on?

I've seen it on 5.3

>          M.
> --
> Jazz is not dead. It just smells funny...