linux-kernel - Re: [PATCH v3 08/16] irqchip/gic: Configure SGIs as standard interrupts

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Message-ID: <9d3c8d2de29618797568e3d4e325b10b@kernel.org>
Date:   Wed, 16 Sep 2020 15:14:52 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Russell King <linux@....linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Sumit Garg <sumit.garg@...aro.org>,
        Valentin Schneider <Valentin.Schneider@....com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com
Subject: Re: [PATCH v3 08/16] irqchip/gic: Configure SGIs as standard
 interrupts

Hi Linus,

On 2020-09-16 15:03, Linus Walleij wrote:
> On Tue, Sep 1, 2020 at 4:44 PM Marc Zyngier <maz@...nel.org> wrote:
> 
>> Change the way we deal with GIC SGIs by turning them into proper
>> IRQs, and calling into the arch code to register the interrupt range
>> instead of a callback.
>> 
>> Reviewed-by: Valentin Schneider <valentin.schneider@....com>
>> Signed-off-by: Marc Zyngier <maz@...nel.org>
> 
> Hmmm apart from Exynos this crashes the Ux500 too... I don't
> even get the crash dumpon a LL UART, it hard hangs.

No output whatsoever? That's really odd... Or do you see the kernel
booting and locking up when starting secondaries? If the latter, it
would indicate that we haven't properly deactivated the SGI...

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