linux-kernel - RE: [PATCH v8 0/3] Handle corrected machine check interrupt storms

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Date:   Mon, 2 Oct 2023 17:57:35 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     Yazen Ghannam <yazen.ghannam@....com>,
        "Smita.KoralahalliChannabasappa@....com" 
        <Smita.KoralahalliChannabasappa@....com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH v8 0/3] Handle corrected machine check interrupt storms

> Including placing most of the storm tracking code into threshold.c
> instead of bloating core.c.

The lkp test robot complains on a randconfig build with:

# CONFIG_X86_MCE_INTEL is not set
# CONFIG_X86_MCE_AMD is not set

about some undefined symbols. 

>> core.c:(.text+0x1130): undefined reference to `storm_desc'
>> core.c:(.text+0x1634): undefined reference to `mce_track_storm'

Simple fix would be to move definition of storm_desc into core.c
and provide a stub:

static inline void mce_track_storm(struct mce *mce) { }

for the case where neither INTEL nor AMD is configured.

in internal.h

-Tony