linux-kernel - Re: [PATCH RESEND v2 4/5] iommu/tegra-smmu: Rework tegra_smmu_probe

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Date:   Wed, 10 Feb 2021 00:20:53 -0800
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Guillaume Tucker <guillaume.tucker@...labora.com>
Cc:     will@...nel.org, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-tegra@...r.kernel.org,
        jonathanh@...dia.com, vdumpa@...dia.com, thierry.reding@...il.com,
        joro@...tes.org, kernel@...labora.com,
        Dmitry Osipenko <digetx@...il.com>,
        "kernelci-results@...ups.io" <kernelci-results@...ups.io>
Subject: Re: [PATCH RESEND v2 4/5] iommu/tegra-smmu: Rework
 tegra_smmu_probe_device()

Hi Guillaume,

On Sat, Feb 06, 2021 at 01:40:13PM +0000, Guillaume Tucker wrote:
> > It'd be nicer if I can get both logs of the vanilla kernel (failing)
> > and the commit-reverted version (passing), each applying this patch.
> 
> Sure, I've run 3 jobs:
> 
> * v5.11-rc6 as a reference, to see the original issue:
>   https://lava.collabora.co.uk/scheduler/job/3187848
> 
> * + your debug patch:
>   https://lava.collabora.co.uk/scheduler/job/3187849
> 
> * + the "breaking" commit reverted, passing the tests:
>   https://lava.collabora.co.uk/scheduler/job/3187851

Thanks for the help!

I am able to figure out what's probably wrong, yet not so sure
about the best solution at this point.

Would it be possible for you to run one more time with another
debugging patch? I'd like to see the same logs as previous:
1. Vanilla kernel + debug patch
2. Vanilla kernel + Reverted + debug patch

Thank you
Nicolin

View attachment "0001-iommu-debug-tegra-smmu-v2.patch" of type "text/x-diff" (12406 bytes)