linux-kernel - Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting

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Date:   Mon, 3 Aug 2020 14:38:41 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Kurt Kanzenbach <kurt.kanzenbach@...utronix.de>,
        paulmck@...nel.org, Anna-Maria Gleixner <anna-maria@...utronix.de>,
        catalin.marinas@....com, Alison Wang <alison.wang@....com>,
        linux-kernel@...r.kernel.org, leoyang.li@....com,
        vladimir.oltean@....com, Thomas Gleixner <tglx@...utronix.de>,
        mw@...ihalf.com, will@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        Marc Zyngier <maz@...nel.org>,
        Valentin Schneider <valentin.schneider@....com>
Subject: Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level
 IRQ time accounting

On Mon, Aug 03, 2020 at 10:51:32AM +0100, Robin Murphy wrote:
> 
> Having glanced across another thread that mentions IRQ accounting
> recently[1], I wonder if the underlying bug here might have something do to
> with the stuff that Marc's trying to clean up.
> 
> Robin.
> 
> [1] https://lore.kernel.org/linux-arm-kernel/20200624195811.435857-16-maz@kernel.org/

Thanks Robin. I've applied Marc's "[PATCH v2 00/17] arm/arm64: Turning
IPIs into normal interrupts" series and the LS1028A I'm debugging hangs
in absolutely the same way.

-Vladimir