linux-kernel - Re: [linux-pm] Re: [PATH 1/1] Kexec jump - v2

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Message-Id: <1187765471.20920.62.camel@caritas-dev.intel.com>
Date:	Wed, 22 Aug 2007 14:51:11 +0800
From:	"Huang, Ying" <ying.huang@...el.com>
To:	Pavel Machek <pavel@....cz>
Cc:	david@...g.hm, nigel@...el.suspend2.net,
	Kexec Mailing List <kexec@...ts.infradead.org>,
	linux-kernel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-pm@...ts.linux-foundation.org,
	Jeremy Maitin-Shepard <jbms@....edu>
Subject: Re: [linux-pm] Re: [PATH 1/1] Kexec jump - v2 - kexec jump

On Tue, 2007-08-21 at 12:14 +0200, Pavel Machek wrote:
> Ok, I got it to work -- thanks a lot.
> 
> Yes, acpi=off is mandatory. Unfortunately, thinkpad x60 does not boot
> with acpi=off (should we add another test to linux firmware kit?
> Machines should still boot in acpi=off mode...). acpi=off noapic
> nolapic nosmp makes it boot, and that in turn makes kjump work.
> 
> Screen is not refreshed on kjump back to original kernel, but I guess
> that's to be expected. I did not play with framebuffer, yet.
> 
> Maybe it is time to move kjump functionality into -mm and
> kexec-testing?

Now I have worked out a full kexec based hibernation prototype,
including kexec, write out the image, reboot, restore the memory and
jump back. I will release it recently. :)

Best Regards,
Huang Ying
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