linux-kernel - Re: [PATCH 2/2] misc: smpro-errmon: Add dimm training failure syndrome

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Date:   Fri, 17 Feb 2023 09:36:10 +0700
From:   Quan Nguyen <quan@...amperecomputing.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Paul Menzel <pmenzel@...gen.mpg.de>, Arnd Bergmann <arnd@...db.de>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org,
        Open Source Submission <patches@...erecomputing.com>,
        Thang Nguyen <thang@...amperecomputing.com>,
        Phong Vo <phong@...amperecomputing.com>
Subject: Re: [PATCH 2/2] misc: smpro-errmon: Add dimm training failure
 syndrome



On 16/02/2023 19:30, Greg Kroah-Hartman wrote:
> On Thu, Feb 16, 2023 at 10:22:14AM +0700, Quan Nguyen wrote:
>>
>>
>> On 15/02/2023 14:33, Paul Menzel wrote:
>>> Dear Quan,
>>>
>>>
>>> Thank you for your patch.
>>>
>>
>> Thanks Paul for the review.
>>
>>> Am 14.02.23 um 07:45 schrieb Quan Nguyen:
>>>> Adds event_dimm[0-15]_syndrome sysfs to report the failure syndrome
>>>> to BMC when DIMM training failed.
>>>
>>> Where you able to verify that it works? Out of curiosity, how?
>>>
>>
>> Yes, we verified it by injecting DIMM errors and confirm that errors was
>> reported correctly via sysfs.
>> For about how to do error injection, we may  need to refer to section 3.2
>> Memory Error Group in Altra Family RAS Error Injection User Manual. It is
>> shared in our Ampere Customer Connect [1]. The latest version is
>> v1.00_20220329.
>>
>> [1] https://connect.amperecomputing.com
>>
>>>> Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
>>>> ---
>>>>    .../sysfs-bus-platform-devices-ampere-smpro   | 10 +++
>>>>    drivers/misc/smpro-errmon.c                   | 77 +++++++++++++++++++
>>>>    2 files changed, 87 insertions(+)
>>>>
>>>> diff --git
>>>> a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
>>>> b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
>>>> index d4e3f308c451..c35f1d45e656 100644
>>>> --- a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
>>>> +++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
>>>> @@ -265,6 +265,16 @@ Description:
>>>>            For more details, see section `5.7 GPI Status Registers
>>>> and 5.9 Memory Error Register Definitions,
>>>>            Altra Family Soc BMC Interface Specification`.
>>>> +What:
>>>> /sys/bus/platform/devices/smpro-errmon.*/event_dimm[0-15]_syndrome
>>>> +KernelVersion:    6.1
>>>
>>> Should it be 6.2, as it probably won’t make it into 6.1?
>>>
>>
>> Thanks for the catch. Will fix in next version.
> 
> Should be 6.3, it's missed the 6.2 merge window cycle, sorry.
> 
> thanks,
> 

Thanks Greg,
Will update to 6.3