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Message-ID: <957a3cdb-6091-8679-ddb0-296db2347291@quicinc.com>
Date:   Mon, 3 Jul 2023 14:05:58 -0700
From:   Trilok Soni <quic_tsoni@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mukesh Ojha <quic_mojha@...cinc.com>,
        Rob Herring <robh+dt@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>
CC:     <corbet@....net>, <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <keescook@...omium.org>,
        <tony.luck@...el.com>, <gpiccoli@...lia.com>,
        <mathieu.poirier@...aro.org>, <catalin.marinas@....com>,
        <will@...nel.org>, <linus.walleij@...aro.org>,
        <andy.shevchenko@...il.com>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-gpio@...r.kernel.org>, Alex Elder <elder@...aro.org>
Subject: Re: [PATCH v4 00/21] Add Qualcomm Minidump kernel driver related
 support

On 7/2/2023 1:29 AM, Krzysztof Kozlowski wrote:
> On 30/06/2023 18:04, Mukesh Ojha wrote:
>>>
>>>> We don't add layers when they are not needed, and never when there is no
>>>> actual user.  If you need the extra "complexity" later, then add it
>>>> later when it is needed as who knows when that will ever be.
>>>>
>>>> Please redo this series based on that, thanks.
>>>
>>> My bigger issue with this whole series is what would this all look
>>> like if every SoC vendor upstreamed their own custom dumping
>>> mechanism. That would be a mess. (I have similar opinions on the
>>> $soc-vendor hypervisors.)
> 
> Mukesh,
> 
> LPC CFP is still open. There will be also Android and Kernel Debugging
> LPC microconference tracks. Coming with a unified solution could be a
> great topic for LPC. Solutions targeting only one user are quite often
> frowned upon.

LPC is far out and in November. Can we not have others speak up if they 
have the similar solution now? We can expand this to linux-kernel and 
ask for the other SOC vendors to chime in. I am sure that we may have 
existing solutions which came in for the one user first like Intel RDT 
if I remember. I am sure ARM MPAM usecase was present at that time but 
Intel RDT based solution which was x86 specific but accepted.

---Trilok Soni

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