linux-kernel - Re: [PATCH v3] ACPI / tables: Add IORT to injectable table list

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Date:   Mon, 19 Feb 2018 14:13:38 -0500
From:   Jon Masters <jcm@...masters.org>
To:     "Wang, Dongsheng" <dongsheng.wang@...-semitech.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        "Yang, Shunyong" <shunyong.yang@...-semitech.com>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>
Cc:     "lenb@...nel.org" <lenb@...nel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Zheng, Joey" <yu.zheng@...-semitech.com>,
        "Jiang, Yutang2" <yutang2.jiang@...-semitech.com>
Subject: Re: [PATCH v3] ACPI / tables: Add IORT to injectable table list

On 02/02/2018 07:12 AM, Wang, Dongsheng wrote:
> Hey, Hanjun,
> 
> On 2018/2/2 19:54:24, "Hanjun Guo" <guohanjun@...wei.com> wrote:
> 
>> On 2018/2/2 18:25, Yang Shunyong wrote:
>>> Loading IORT table from initrd is used to fix firmware IORT defects.
>>
>> I don't think this fix "firmware defects", it just for debug purpose,
>> we will not use that for production purpose, right? I think above line
>> can be removed.
>>
> I thinks the upgrade feature not only for debug. Here's an important
> way to fix bugs that come from the firmware.
> 
> Documentation/acpi/initrd_table_override.txt

I think we should message that this is for debug/development use.
Ultimately, it's not the way to address firmware problems. Firmware
needs to address that by shipping the correct(ed) tables :)

-- 
Computer Architect