linux-kernel - Re: 2.6.38.2 breaks suspend to disk

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Message-ID: <4D961FBC.2030105@zytor.com>
Date:	Fri, 01 Apr 2011 11:55:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	Yinghai Lu <yinghai@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Michael Leun <lkml20101129@...ton.leun.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Mike Pagano <mpagano@...too.org>
Subject: Re: 2.6.38.2 breaks suspend to disk

On 04/01/2011 11:14 AM, Stefano Stabellini wrote:
>> Why the heck should we save and restore CR4 only for x86-64?
> 
> AFAICT it has always been the case since the beginning of time (Initial
> git repository build).

Doesn't change the fact that at least conceptually it's wrong; consider
bits like NX.  Rafael, do you have any thoughts on this?

	-hpa
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