Re: [Xen-devel] Re: [PATCH] xen: register timer interrupt with IRQF_TIMER

[Valtteri Kiviniemi <valtteri.kiviniemi@xxxxxxxxxxxx>]

Hi,

Ok, sorry didn not notice that. my domU kernels are quite small, they 
dont contain anything that is not necessary and since power management 
options were not necessary on Xen 3.4 I did not enable them on unstable 
either. Gonna now compile new domU kernels and test again.
Thanks.

- Valtteri Kiviniemi

Ian Campbell kirjoitti:
> On Tue, 2009-11-24 at 12:51 +0000, Valtteri Kiviniemi wrote:
> > Hi,
> >
> > This is not still working, when I try to save a domain:
> >
> > file:
> >
> > root@xen:/# du -h db.save
> > 64K     db.save
> >
> > domU console.
> >
> > Ignoring shutdown request: suspend
> As I said before - enable CONFIG_PM_SLEEP, you won't get anywhere
> without it.
>
> Ian.
>
> > xend.log:
> >
> > [2009-11-24 14:47:57 2131] DEBUG (XendCheckpoint:124) [xc_save]: 
> > /usr/lib/xen/bin/xc_save 54 1 0 0 0
> > [2009-11-24 14:47:57 2131] INFO (XendCheckpoint:424) xc_save: failed to 
> > get the suspend evtchn port
> > domU config:
> >
> > kernel = "/boot/bzImage-domU"
> > builder = "linux"
> > memory = "1024"
> > name = "db"
> > vcpus = "8"
> > cpus = [ "0", "1", "2", "3", "4", "5", "6", "7" ]
> > tsc_native="1"
> > vif = [ "mac=00:50:56:13:27:d9, bridge=eth0" ]
> > disk = [ "phy:/dev/virtuals/db,xvda1,w" ]
> > root = "/dev/xvda1 ro"
> > extra = "console=hvc0"
> > on_poweroff = "destroy"
> > on_reboot = "restart"
> > on_crash = "restart"
> >
> > Latest xen-unstable (compiled 1 hour ago) latest 2.6.31.6 kernel with 
> > this patch applied.
> > - Valtteri Kiviniemi
> >
> > Ian Campbell kirjoitti:
> > > On Tue, 2009-11-24 at 10:16 +0000, Ian Campbell wrote:
> > > > Otherwise the timer is disabled by dpm_suspend_noirq() which in turn prevents
> > > > correct operation of stop_machine on multi-processor systems and breaks
> > > > suspend.
> > > This appears to have been broken since after 2.6.29 sometime (I see
> > > failures with 2.6.30). I suspect this commit, or one related to it, made
> > > IRQF_TIMER a hard requirement:
> > >
> > >         commit 0a0c5168df270a50e3518e4f12bddb31f8f5f38f
> > >         Author: Rafael J. Wysocki <rjw@xxxxxxx>
> > >         Date:   Mon Mar 16 22:33:49 2009 +0100
> > >         
> > >             PM: Introduce functions for suspending and resuming device interrupts
> > >             
> > >             Introduce helper functions allowing us to prevent device drivers from
> > >             getting any interrupts (without disabling interrupts on the CPU)
> > >             during suspend (or hibernation) and to make them start to receive
> > >             interrupts again during the subsequent resume.  These functions 
> > > make it
> > >             possible to keep timer interrupts enabled while the "late" suspend 
> > > and
> > >             "early" resume callbacks provided by device drivers are being
> > >             executed.  In turn, this allows device drivers' "late" suspend and
> > >             "early" resume callbacks to sleep, execute ACPI callbacks etc.
> > >             
> > >             The functions introduced here will be used to rework the handling of
> > >             interrupts during suspend (hibernation) and resume.  Namely,
> > >             interrupts will only be disabled on the CPU right before suspending
> > >             sysdevs, while device drivers will be prevented from receiving
> > >             interrupts, with the help of the new helper function, before their
> > >             "late" suspend callbacks run (and analogously during resume).
> > >
> > > Ian.
> > >
> > >
> > >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-devel
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel