linux-kernel - RE: spurious mce Hardware Error messages in next-20250912

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Message-ID: <SJ1PR11MB608353C84F69E8EC0D6744ECFC16A@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date: Thu, 18 Sep 2025 21:04:53 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: Yazen Ghannam <yazen.ghannam@....com>, Nikolay Borisov
	<nik.borisov@...e.com>
CC: Bert Karwatzki <spasswolf@....de>, Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, "x86@...nel.org"
	<x86@...nel.org>, "rafael@...nel.org" <rafael@...nel.org>, "Zhuo, Qiuxu"
	<qiuxu.zhuo@...el.com>, "Smita.KoralahalliChannabasappa@....com"
	<Smita.KoralahalliChannabasappa@....com>
Subject: RE: spurious mce Hardware Error messages in next-20250912

> For the current issue, it does seem that the registers contain junk
> values. And we are only now seeing this with the recent rework.

Do you try to clear these registers after logging? Or just rely on clearing
the MCi_STATUS register?

If you are clearing, then it isn't working (or new junk values appear quickly).

-Tony