linux-kernel - Re: [PATCH v3] ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr

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Message-ID: <7689b8a7-105c-d8a4-4ba0-10aafdfd75e8@huawei.com>
Date:   Wed, 26 Jul 2023 17:07:30 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Guanghui Feng <guanghuifeng@...ux.alibaba.com>
CC:     "sudeep.holla@....com" <sudeep.holla@....com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "baolin.wang@...ux.alibaba.com" <baolin.wang@...ux.alibaba.com>,
        "alikernel-developer@...ux.alibaba.com" 
        <alikernel-developer@...ux.alibaba.com>,
        "will@...nel.org" <will@...nel.org>,
        "catalin.marinas@....com" <catalin.marinas@....com>
Subject: Re: [PATCH v3] ACPI/IORT: Remove erroneous id_count check in
 iort_node_get_rmr_info()

On 2023/7/19 17:13, Hanjun Guo wrote:
> On 2023/7/18 16:56, Shameerali Kolothum Thodi wrote:
>>> [+Catalin, Will, Shameer]
[...]
>>> Shameer, I know this may look like overkill since the hunk we are
>>> removing is buggy but can you please test this patch on platforms
>>> with RMR to make sure we are not triggering regressions by removing
>>> it (by the specs that's what should be done but current firmware
>>> is always something to reckon with) ?
>> Yes, that is a valid fix. Unlikely it will be a problem. Anyway, I 
>> have requested
>> Hanjun to help with the testing as I don't have a test setup with me now.
> 
> Valid fix for me as well, we had a firmware bug which reported the
> numbers of ID as 1 when we only have one ID mapping, so remove the
> check is fine for the old firmware, but to make it sure, we need some
> test before give it a pass.
> 
>>
>> Hanjun, please help.
> 
> I need some time to get it properly tested on two versions of firmware,
> and get the test machine properly setup, please allow me give the
> feedback next week.

No regressions were found,

Tested-by: Hanjun Guo <guohanjun@...wei.com>

Thanks
Hanjun