linux-kernel - Re: [PATCH 1/1] x86/mce/amd: Add PPIN support for AMD MCE

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Date:   Thu, 19 Mar 2020 21:44:48 +0000
From:   "Huang2, Wei" <Wei.Huang2@....com>
To:     Borislav Petkov <bp@...en8.de>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "Ghannam, Yazen" <Yazen.Ghannam@....com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "Koralahalli Channabasappa, Smita" 
        <Smita.KoralahalliChannabasappa@....com>
Subject: Re: [PATCH 1/1] x86/mce/amd: Add PPIN support for AMD MCE

[AMD Official Use Only - Internal Distribution Only]

>> However, there is a small problem: during boot, mce_setup() is called
>> once before mce_amd_ppin_init() is invoked.
>Which call site is that exactly?

It was from machine_check_poll() ==> mce_gather_info(), right around the invoke of identify_cpu() inside arch/x86/kernel/cpu/common.c file.

-Wei

> --
> Regards/Gruss,
>
> Boris.