linux-kernel - Re: [PATCH 4/8] unify paravirt parts of system.h

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Date:	Sat, 15 Dec 2007 14:26:38 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Andi Kleen <ak@...e.de>, Avi Kivity <avi@...ranet.com>,
	Glauber de Oliveira Costa <gcosta@...hat.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	glommer@...il.com, tglx@...utronix.de, mingo@...e.hu,
	ehabkost@...hat.com, jeremy@...p.org, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, rusty@...tcorp.com.au,
	chrisw@...s-sol.org, rostedt@...dmis.org, hpa@...or.com,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [PATCH 4/8] unify paravirt parts of system.h

> It probably is safe to remove... but we currently support '2.8.95
> kernel loads/resumes 2.6.24 image'... which would break if 2.8 uses
> cr8.

No it won't. 2.8 would just restore some random useless value.
If 2.8 wants to use CR8 it would have to re-initialize it

-Andi
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