linux-kernel - [PATCH 1/2] x86/MCE: Extend size of the MCE Records pool

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Date: Thu, 8 Feb 2024 11:47:01 -0600
From: "Naik, Avadhut" <avadnaik@....com>
To: "Luck, Tony" <tony.luck@...el.com>, "x86@...nel.org" <x86@...nel.org>,
 "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>
Cc: "bp@...en8.de" <bp@...en8.de>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "yazen.ghannam@....com" <yazen.ghannam@....com>,
 Avadhut Naik <avadhut.naik@....com>
Subject: [PATCH 1/2] x86/MCE: Extend size of the MCE Records pool



On 2/8/2024 11:41, Naik, Avadhut wrote:
> Hi
> 
> On 2/7/2024 18:02, Luck, Tony wrote:
>>> +#define CPU_GEN_MEMSZ	256
>>  
>> What is this define?
>>
>> Why isn't this "sizeof(struct mce)"?
>>
>> Or 2* that if you are trying to reserve enough space for two records per CPU.
>>
> That's the memory in bytes reserved for each logical CPU in the
> extended MCE Records pool. By current size of struct mce that
> equates to around 2 records.
This memory will be reserved for each logical CPU only when the
command line parameter being introduced through the second patch
"mce-genpool-extend" is not set.

> 
> Will change it to (2 * sizeof(struct mce)) though. Feels more
> accurate. Thanks for the suggestion!
> 
> Do you have any additional concerns/comments on this patchset?
> 
>> -Tony
> 

-- 
Thanks,
Avadhut Naik