linux-kernel - Re: [PATCH 20/20] x86_64: Move CPU verification code to common file

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Message-ID: <455EAF54.5090500@zytor.com>
Date:	Fri, 17 Nov 2006 22:59:32 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Oleg Verych <olecom@...wer.upol.cz>
CC:	Andi Kleen <ak@...e.de>, LKML <linux-kernel@...r.kernel.org>,
	vgoyal@...ibm.com, akpm@...l.org, rjw@...k.pl,
	ebiederm@...ssion.com, Reloc Kernel List <fastboot@...ts.osdl.org>,
	pavel@...e.cz, magnus.damm@...il.com
Subject: Re: [PATCH 20/20] x86_64: Move CPU verification code to common file

Oleg Verych wrote:
> 
> It will burn CPU, until power cycle will be done (my AMD64 laptop and
> Intel's amd64 destop PC require that). In case of reboot timeout (or
> just reboot with jump to BIOS), i will just choose another image to boot
> or will press F8 to have another boot device.
> 

That's a fairly stupid argument, since it assumes operator intervention, 
at which point you have access to the machine anyway.

A stronger argument is, again, that some bootloaders can do unattended 
fallback.

However, this test should probably be pushed earlier, into setup.S, 
where executing a BIOS-clean reboot is much easier.

	-hpa
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