linux-kernel - RE: [PATCH v2] x86/boot: Add a message about ignored early NMIs

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Date: Wed, 24 Jan 2024 11:44:28 +0000
From: NOMURA JUNICHI(野村　淳一)
	<junichi.nomura@....com>
To: Borislav Petkov <bp@...en8.de>
CC: "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
	"mingo@...hat.com" <mingo@...hat.com>, "tglx@...utronix.de"
	<tglx@...utronix.de>, "dave.hansen@...ux.intel.com"
	<dave.hansen@...ux.intel.com>, "x86@...nel.org" <x86@...nel.org>,
	"hpa@...or.com" <hpa@...or.com>, "ardb@...nel.org" <ardb@...nel.org>,
	"david@...hat.com" <david@...hat.com>, "nikunj@....com" <nikunj@....com>,
	"thomas.lendacky@....com" <thomas.lendacky@....com>, "debarbos@...hat.com"
	<debarbos@...hat.com>, "jlelli@...hat.com" <jlelli@...hat.com>,
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	<dzickus@...hat.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2] x86/boot: Add a message about ignored early NMIs

> From: Borislav Petkov <bp@...en8.de>
> On Mon, Jan 15, 2024 at 08:57:45AM +0000, NOMURA JUNICHI(野村 淳一) wrote:
> > +	if (spurious_nmi_count) {
> > +		error_putstr("Spurious early NMI ignored. Number of NMIs: 0x");
> > +		error_puthex(spurious_nmi_count);
> > +		error_putstr("\n");
> 
> Uff, that's just silly:
> 
> Spurious early NMIs ignored: 0x0000000000000017
> 
> Would you like to add a error_putnum() or so in a prepatch which would
> make this output
> 
> Spurious early NMIs ignored: 23.
> 
> ?
> 
> So that it is human readable and doesn't make me wonder what that hex
> value is supposed to mean?

Yes, it would be nicer to print that way.  I used the existing error_puthex() just
to keep the patch minimal.  I will try to add error_putnum().

> Btw, please use this version when sending next time:

Thank you.

--
Jun'ichi Nomura, NEC Corporation / NEC Solution Innovators, Ltd.

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