From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
"Xen-Devel (E-mail)" <xen-devel@lists.xensource.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: pv 2.6.31 (kernel.org) and save/migrate fails, domU BUG
Date: Wed, 25 Nov 2009 12:32:24 -0800 [thread overview]
Message-ID: <4B0D9458.5090500@goop.org> (raw)
In-Reply-To: <1259179385.30589.0.camel@localhost.localdomain>
On 11/25/09 12:03, Ian Campbell wrote:
>> Yep. I wonder how it ever worked? There's been a fair amount of change
>> in the PM code, so that could have changed things. I don't know if
>> there's a deep reason for not calling tick_resume() on all processors.
>>
>> Rafael, tglx: suspend/resume under Xen doesn't need to hot unplug all
>> the CPUs, so we don't; the hypervisor can manage the context
>> save/restore for all CPUs. Is there a deep reason why
>> timekeeping_resume() can't call the CLOCK_EVT_NOTIFY_RESUME notifier on
>> all online CPUs?
>>
> Interrupts are disabled at that point where it currently calls the
> notifier, so none of the SMP function call primitives work.
>
That does make it pretty awkward.
J
next prev parent reply other threads:[~2009-11-25 20:32 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-06 18:37 pv 2.6.31 (kernel.org) and save/migrate Dan Magenheimer
2009-11-06 20:37 ` Pasi Kärkkäinen
2009-11-06 22:27 ` Dan Magenheimer
2009-11-06 22:30 ` Pasi Kärkkäinen
2009-11-07 0:08 ` Dan Magenheimer
2009-11-07 11:09 ` Pasi Kärkkäinen
2009-11-07 15:32 ` Dan Magenheimer
2009-11-08 14:17 ` pv 2.6.31 (kernel.org) and save/migrate, domU BUG() Pasi Kärkkäinen
2009-11-08 14:20 ` pv 2.6.31 (kernel.org) and save/migrate, domU BUG Pasi Kärkkäinen
2009-11-08 15:29 ` pv 2.6.31 (kernel.org) and save/migrate, domU BUG() Dan Magenheimer
2009-11-08 15:41 ` Pasi Kärkkäinen
2009-11-08 16:48 ` Pasi Kärkkäinen
2009-11-12 23:16 ` Jeremy Fitzhardinge
2009-11-12 23:22 ` Brendan Cully
2009-11-08 16:54 ` Dan Magenheimer
2009-11-08 17:27 ` pv 2.6.31 (kernel.org) and save/migrate, domU BUG Pasi Kärkkäinen
2009-11-10 10:08 ` pv 2.6.31 (kernel.org) and save/migrate fails, " Pasi Kärkkäinen
2009-11-12 23:36 ` Jeremy Fitzhardinge
2009-11-24 14:27 ` Ian Campbell
2009-11-25 14:12 ` Ian Campbell
2009-11-25 19:28 ` Jeremy Fitzhardinge
2009-11-25 20:03 ` Ian Campbell
2009-11-25 20:32 ` Jeremy Fitzhardinge [this message]
2009-12-01 11:47 ` [PATCH] xen: improve error handling in do_suspend Ian Campbell
2009-12-01 11:47 ` [PATCH] xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region Ian Campbell
2009-12-01 22:50 ` Jeremy Fitzhardinge
2009-11-23 16:44 ` pv 2.6.31 (kernel.org) and save/migrate fails, domU BUG Ian Campbell
2009-11-24 10:27 ` Ian Campbell
2009-11-12 23:21 ` pv 2.6.31 (kernel.org) and save/migrate, domU BUG() Jeremy Fitzhardinge
2009-11-07 0:19 ` pv 2.6.31 (kernel.org) and save/migrate Jeremy Fitzhardinge
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