linux-kernel - Re: [PATCH v3 2/3] genirq: Always limit the affinity to online CPUs

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Date:   Wed, 20 Apr 2022 11:47:22 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Marc Zyngier <maz@...nel.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        'Linux Samsung SOC' <linux-samsung-soc@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        John Garry <john.garry@...wei.com>,
        Xiongfeng Wang <wangxiongfeng2@...wei.com>,
        David Decotigny <ddecotig@...gle.com>
Subject: Re: [PATCH v3 2/3] genirq: Always limit the affinity to online CPUs

Hi Krzysztof,

On 20.04.2022 11:13, Krzysztof Kozlowski wrote:
> On 14/04/2022 13:08, Marek Szyprowski wrote:
>>> Thanks for all of the debug, super helpful. The issue is that we don't
>>> handle the 'force' case, which a handful of drivers are using when
>>> bringing up CPUs (and doing so before the CPUs are marked online).
>>>
>>> Can you please give the below hack a go?
>> This patch fixed the issue. Thanks! Feel free to add my:
>>
>> Reported-by: Marek Szyprowski <m.szyprowski@...sung.com>
>>
>> Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Hi Marc,
>
> Linux-next still fails to boot on Exynos5422 boards, so I wonder if you
> applied the fix?
>
> Instead of silent fail there is now "Unable to handle kernel paging
> request at virtual address f0836644", so it is slightly different.

This is yet another issue (related to all ARM 32bit boards) introduced 
in next-20220413, see:

https://lore.kernel.org/all/20220405014836.14077-1-peterx@redhat.com/T/#m6137721ae1323fdf424cee0f8ea1a6af5a3af396

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland