linux-kernel - Re: [TuxOnIce-devel] [RFC] TuxOnIce

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]

Message-Id: <200905260058.54482.rjw@sisk.pl>
Date:	Tue, 26 May 2009 00:58:53 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	nigel@...onice.net, linux-pm@...ts.linux-foundation.org,
	tuxonice-devel@...ts.tuxonice.net, linux-kernel@...r.kernel.org,
	Pavel Machek <pavel@....cz>
Subject: Re: [TuxOnIce-devel] [RFC] TuxOnIce

On Tuesday 26 May 2009, Oliver Neukum wrote:
> Am Montag, 25. Mai 2009 23:43:23 schrieb Rafael J. Wysocki:
> > > Oh, before I forget to mention and you ask - how to know what allowance
> > > for the drivers? I use a sysfs entry - the user then just needs to see
> > > what's needed on their first attempt, set up a means of putting that
> > > value in the sysfs file in future (eg /etc/hibernate/tuxonice.conf) and
> > > then forget about it.
> >
> > OK, this is reasonable.
> 
> No, I am afraid it is not. The average user has no clue. Even if that
> is not the problem, the user never knows for sure he has encountered
> the worst case.

OK there, but surely it's better to have a sysfs attribute than a fixed value?

> If you really have drivers that have exceptionally large memory requirements
> (eg. you need to copy video ram), you should tell the system through struct
> driver and do accounting at probe and removal of devices.

Or perhaps the drivers should allocate memory from a PM notifier (which is
called before the freezing of tasks) to avoid the problem?

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/