linux-kernel - Re: [Xen-devel] [PATCH] PM / Hibernate: Introduce CONFIG_HIBERNATE

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] [day] [month] [year] [list]

Message-Id: <201103302310.24717.rjw@sisk.pl>
Date:	Wed, 30 Mar 2011 23:10:24 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ian Campbell <Ian.Campbell@...rix.com>
Cc:	"linux-pm@...ts.linux-foundation.org" 
	<linux-pm@...ts.linux-foundation.org>,
	Shriram Rajagopalan <rshriram@...ubc.ca>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH] PM / Hibernate: Introduce CONFIG_HIBERNATE_INTERFACE

On Tuesday, March 29, 2011, Rafael J. Wysocki wrote:
> On Tuesday, March 29, 2011, Ian Campbell wrote:
> > Hi Rafael,
> > 
> > On Sat, 2011-03-26 at 11:29 +0000, Rafael J. Wysocki wrote:
> > > From: Rafael J. Wysocki <rjw@...k.pl>
> > > 
> > > Xen save/restore is going to use hibernate device callbacks for
> > > quiescing devices and putting them back to normal operations and it
> > > would need to select CONFIG_HIBERNATION for this purpose.  However,
> > > that also would cause the hibernate interfaces for user space to be
> > > enabled, which might confuse user space, because the Xen kernels
> > > don't support hibernation.  Moreover, it would be wasteful, as it
> > > would make the Xen kernels include a substantial amount of code that
> > > they would never use.
> > > 
> > > To address this issue introduce new power management Kconfig option
> > > CONFIG_HIBERNATE_INTERFACE, such that the hibernate interfaces for
> > > user space and the image-handling code will depend on it and it will
> > > select CONFIG_HIBERNATION.  Then, Xen save/restore will be able to
> > > select CONFIG_HIBERNATION without dragging the entire hibernate code
> > > along with it.
> > > 
> > > Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> > 
> > Were you planning to put this forward for 2.6.39 or are you waiting for
> > 2.6.40?
> 
> I'm goint to push it for 2.6.39.  In fact, I'm going to send the pull request
> shortly.

Unfortunately Linus didn't like it, so I need to rework it to make him happy.

As a result the patch is not going to go into 2.6.39.

Thanks,
Rafael
--
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/