linux-kernel - Re: [linux-pm] [PATCH -mm] kexec jump -v9

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Message-ID: <Pine.LNX.4.44L0.0803191057270.4958-100000@netrider.rowland.org>
Date:	Wed, 19 Mar 2008 11:01:00 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Huang, Ying" <ying.huang@...el.com>, <nigel@...el.suspend2.net>,
	Kexec Mailing List <kexec@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	<linux-pm@...ts.linux-foundation.org>,
	Vivek Goyal <vgoyal@...hat.com>, Len Brown <lenb@...nel.org>
Subject: Re: [linux-pm] [PATCH -mm] kexec jump -v9

On Tue, 18 Mar 2008, Eric W. Biederman wrote:

> Alan Stern <stern@...land.harvard.edu> writes:

> > Could it be connected with the way the boot kernel hands control over
> > to the image kernel?  Presumably ACPI isn't prepared to deal with that
> > sort of thing during a boot from S5.  It would have to be fooled into
> > thinking the two kernels were one and the same.
> 
> It should be easy to test if it is a hand over problem, by turning off
> the laptop by placing it in S5 (shutdown -h now) and then booting same
> kernel again.

?  Doesn't this happen every time Rafael turns the computer off and 
then turns it back on?

Do you mean that Rafael should do an S5-type hibernate, but then reboot 
in such a way that the image isn't loaded and resumed?

Alan Stern

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