linux-kernel - Re: 2.6.38.2 breaks suspend to disk

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Message-Id: <201104020154.57136.rjw@sisk.pl>
Date:	Sat, 2 Apr 2011 01:54:56 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	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 Friday, April 01, 2011, H. Peter Anvin wrote:
> 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?

I don't seem to remember that being intentional.  I think we should do the
same on both x86s.

Thanks,
Rafael
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