linux-kernel - Re: [PATCH 2/2] x86/CPU/AMD: Print the reason for the last reset

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Message-ID: <Z_TNprjEqcivEkPd@gmail.com>
Date: Tue, 8 Apr 2025 09:17:58 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Mario Limonciello <superm1@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
	"H . Peter Anvin" <hpa@...or.com>,
	"open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	Yazen Ghannam <yazen.ghannam@....com>,
	Mario Limonciello <mario.limonciello@....com>
Subject: Re: [PATCH 2/2] x86/CPU/AMD: Print the reason for the last reset


* Ingo Molnar <mingo@...nel.org> wrote:

> 
> * Borislav Petkov <bp@...en8.de> wrote:
> 
> > On Mon, Apr 07, 2025 at 01:56:57PM -0500, Mario Limonciello wrote:
> > > Boris, your thoughts please?
> > 
> > Right, how hard would it be to decode those as much as possible without
> > having users go look somewhere first?
> > 
> > I mean, we can always go look somewhere for more info but for starters we
> > should display as much useful information as possible.
> 
> Yeah, and I also have an admittedly selfish reason to ask for this: I 
> have a Zen 15h system that is at times unreliable and will 
> spontaneously reboot, and I'd *love* to see whether this reboot-reason 
> register gives me any further insight as to the root cause. :-) 15h 
> appears to be the family when this feature was introduced?

Correction: it's a 17h system, and that also appears to be the version 
cutoff.

Thanks,

	Ingo