> On Tuesday, 27 March 2007 03:59, Adrian Bunk wrote:
> > This email lists some known regressions in Linus' tree compared to 2.6.20.
> >
> > If you find your name in the Cc header, you are either submitter of one
> > of the bugs, maintainer of an affectected subsystem or driver, a patch
> > of you caused a breakage or I'm considering you in any other way
> > possibly involved with one or more of these issues.
> >
> > Due to the huge amount of recipients, please trim the Cc when answering.
>
> I think the following two:
>
> > Subject : suspend to disk: keypress required for power down
> > References :
http://lkml.org/lkml/2007/3/25/78
> > Submitter : Thomas Meyer <thomas@m3y3r.de>
> > Status : unknown
>
> > Subject : suspend to disk: non-boot cpus are disabled again
> > References :
http://lkml.org/lkml/2007/3/25/78
> > Submitter : Thomas Meyer <thomas@m3y3r.de>
> > Handled-By : Rafael J. Wysocki <rjw@sisk.pl>
> > Eric W. Biederman <ebiederm@xmission.com>
> > Status : problem is being debugged
>
> are related to the same issue.
>
> The problem is that we call disable_nonboot_cpus() in swsusp before
> powering down the system in order to avoid triggering the WARN_ON()
> in arch/x86_64/kernel/acpi/sleep.c:init_low_mapping() and this doesn't
> work well on Thomas' system.
>
> Since the problem has been introduced by commit
> 94985134b7b46848267ed6b734320db01c974e72
> (swsusp: disable nonboot CPUs before entering platform suspend), I think it's
> better to revert this commit and remove the the WARN_ON() in
> arch/x86_64/kernel/acpi/sleep.c:init_low_mapping() (appended is a patch that
> removes the WARN_ON()).
