linux-kernel - Re: [BUG] x86 kenel won't boot under Virtual PC

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Message-Id: <48C17754.76E4.0078.0@novell.com>
Date:	Fri, 05 Sep 2008 17:15:48 +0100
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	<linux@...dersweb.net>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Andi Kleen" <andi-suse@...stfloor.org>,
	"Arjan van de Ven" <arjan@...radead.org>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [BUG] x86 kenel won't boot under Virtual PC

>--- a/include/asm-x86/nops.h
>+++ b/include/asm-x86/nops.h
>@@ -84,7 +84,7 @@
> #define ASM_NOP6 K7_NOP6
> #define ASM_NOP7 K7_NOP7
> #define ASM_NOP8 K7_NOP8
>-#elif defined(CONFIG_X86_P6_NOP)
>+/* #elif defined(CONFIG_X86_P6_NOP)
> #define ASM_NOP1 P6_NOP1
> #define ASM_NOP2 P6_NOP2
> #define ASM_NOP3 P6_NOP3
>@@ -93,6 +93,7 @@
> #define ASM_NOP6 P6_NOP6
> #define ASM_NOP7 P6_NOP7
> #define ASM_NOP8 P6_NOP8
>+*/
> #elif defined(CONFIG_X86_64)
> #define ASM_NOP1 K8_NOP1
> #define ASM_NOP2 K8_NOP2

I disagree here: If I configure a 686+ kernel, I expect these NOPs to be
that way (and to work). If you want to run on something that's not
compliant, you just shouldn't configure your kernel that way.

Jan

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