linux-kernel - Re: [linux-pm] Re: [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump

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Message-Id: <200709211410.45248.rjw@sisk.pl>
Date:	Fri, 21 Sep 2007 14:10:44 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	linux-pm@...ts.linux-foundation.org
Cc:	Pavel Machek <pavel@....cz>, nigel@...pend2.net,
	Kexec Mailing List <kexec@...ts.infradead.org>,
	linux-kernel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeremy Maitin-Shepard <jbms@....edu>
Subject: Re: [linux-pm] Re: [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump

On Friday, 21 September 2007 11:49, Pavel Machek wrote:
> Hi!
> 
> > > Seems like good enough for -mm to me.
> 
> (For the record, I do not think this is going to be
> hibernation-replacement any time soon. But it is functionality useful
> for other stuff -- dump memory and continue -- and yes it may be able
> to do hibernation in the long term.
> 
> It really comes from the other side of reliability:
> 
> * swsusp is "if your kernel is perfectly healthy, it will work"
> 
> while this, coming from kdump is
> 
> * "if your kernel is not completely trashed, it should work"
> 
> ...which is why can't use swsusp to do dump memory and continue -- you
> want to do dumps on "slightly broken" systems. And yes, as a
> sideeffect it may be able to do hibernation... why not, lets see how
> it works out).

I generally agree. :-)

Greetings,
Rafael
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