linux-kernel - Re: [linux-pm] [RFC][PATCH 0/2 -mm] kexec based hibernation -v3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 21 Sep 2007 16:47:11 +0800
From:	"Huang, Ying" <ying.huang@...el.com>
To:	Stefan Rompf <stefan@...lof.de>
Cc:	linux-pm@...ts.linux-foundation.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Pavel Machek <pavel@....cz>, nigel@...el.suspend2.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeremy Maitin-Shepard <jbms@....edu>,
	Kexec Mailing List <kexec@...ts.infradead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [linux-pm] [RFC][PATCH 0/2 -mm] kexec based hibernation -v3

On Fri, 2007-09-21 at 10:43 +0200, Stefan Rompf wrote:
> Am Donnerstag, 20. September 2007 07:34 schrieb Huang, Ying:
> 
> > The hibernation procedure with the patch set is as follow:
> >
> > 1. Boot a kernel A
> >
> > 2. Work under kernel A
> >
> > 3. Kexec another kernel B (crash dump enabled) in kernel A.
> 
> From a short glance over current Linus' arch/i386/kernel/machine_kexec.c, 
> memory for the crash dump kernel B still needs to be reserved statically when 
> booting A.
> 
> This is one of the biggest issues with kexec based hibernation. For the 
> typical notebook user, it is totally unacceptable to reserve 16 megabytes of 
> memory just to be able to suspend to disk. And given the fact that current 
> distribution kernels are quite modular and require early module loading, even 
> more memory might be needed.
> 
> IMHO, a plan how to fix this must exist or the concept of kexec based 
> hibernation is a waste of time.

This issue has been resolved. The implementation method details in
another mail with title as follow:

[RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump

Best Regards,
Huang Ying
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/