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Re: [Xen-devel] Re: [Fedora-xen] Xorg on JF 2.6.31-rc8 with xen 3.5 unst

To: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Fedora-xen] Xorg on JF 2.6.31-rc8 with xen 3.5 unstable, stacktrace with >4096M of dom0_mem
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Tue, 8 Sep 2009 22:22:46 +0300
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, fedora-xen@xxxxxxxxxx
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On Tue, Sep 08, 2009 at 12:14:54PM -0700, Boris Derzhavets wrote:
> Console drops into the same stack trace in  both cases.
> 

Jeremy: Any ideas could some recent change in pv_ops dom0 kernel cause
usb stuff to stop working with >4096M of dom0 memory? 

dom0_mem=4096M works
dom0_mem=4097M fails with stacktrace

Boris: What was the last kernel that worked without backtraces? 
Also, does that same kernel work as baremetal (without Xen) ?

-- Pasi

> 
> --- On Tue, 9/8/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> 
> From: Pasi Kärkkäinen <pasik@xxxxxx>
> Subject: Re: [Xen-devel] Re: [Fedora-xen] Xorg on JF 2.6.31-rc8 with xen 3.5 
> unstable
> To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> Cc: "Mark Schloesser" <mark.schloesser@xxxxxxxxxxxxxx>, 
> xen-devel@xxxxxxxxxxxxxxxxxxx, fedora-xen@xxxxxxxxxx
> Date: Tuesday, September 8, 2009, 2:49 PM
> 
> On Tue, Sep 08, 2009 at 11:46:05AM -0700, Boris Derzhavets wrote:
> > System boots up with dom0_mem=4096M.
> >
> 
> Does it boot up with dom0_mem=4097M ?
> 
> How about dom0_mem=6144M ?
> 
> -- Pasi
> 
> > Boris.
> > 
> > --- On Tue, 9/8/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > 
> > From: Pasi Kärkkäinen <pasik@xxxxxx>
> > Subject: Re: [Xen-devel] Re: [Fedora-xen] Xorg on JF 2.6.31-rc8 with xen 
> > 3.5 unstable
> > To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, fedora-xen@xxxxxxxxxx, "Mark Schloesser" 
> > <mark.schloesser@xxxxxxxxxxxxxx>
> > Date: Tuesday, September 8, 2009, 1:47 PM
> > 
> > On Tue, Sep 08, 2009 at 10:38:08AM -0700, Boris Derzhavets wrote:
> > > Call trace:
> > 
> > 
> > OK. How much memory you have? 
> > 
> > Does it happen with dom0_mem=2048M? Does it happen with dom0_mem=4096M? 
> > 
> > -- Pasi
> > 
> > > > > >
> > > > > >    usb_hc_died + .....
> > > > > >    usb_add_hcd +.....
> > > > > >    usb_hcd_pci_probe + ....
> > > > > >    do_work_for_cpu + .....
> > > > > >    local_pci_probe + ...
> > > > > >    do_work_for_cpu +.....
> > > > > >    kthread +.....
> > > > > >    child_rip+....
> > > > > >    restore_args + .....
> > > > > >    child_rip + .....
> > > > > >    Code :
> > >  .   .   .   .
> > > > > >    .  .  .   .
> > > > > >
> > > > > >    RIP [<ffff...c7>] usb_kick_khubd + 0x10/0x25
> > > > > >    RSP < ffff ... e0>
> > > > > >    CR2: 00000...098
> > > > > >
> > > > > >    ---[ end trace 8219......]----
> > > > > >
> > > > > >    uhci_hcd 0000:00:1a:0 host controller process error, something 
> > > > > >bad
> > > > > >    happened !
> > > > > >    uhci_hcd 0000:00:1a:0 host controller halted , very bad
> > > > > >    uhci_hcd 0000:00:1a:0  HC died, cleaning up
> > > 
> > > 
> > > --- On Tue, 9/8/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > > 
> > > From: Pasi Kärkkäinen <pasik@xxxxxx>
> > > Subject: Re: [Xen-devel] Re: [Fedora-xen] Xorg on JF 2.6.31-rc8 with xen 
> > > 3.5 unstable
> > > To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> > > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, fedora-xen@xxxxxxxxxx, "Mark 
> > > Schloesser" <mark.schloesser@xxxxxxxxxxxxxx>
> > > Date: Tuesday, September 8, 2009, 12:17 PM
> > > 
> > > On Tue, Sep 08, 2009 at 08:45:29AM -0700, Boris Derzhavets wrote:
> > > > Finally,
> > > > 
> > > > title Xen 3.4.1  Fedora 12  (2.6.31-rc8 ) (/dev/sdb1)
> > > > 
> > > >   root (hd1,0)
> > > > 
> > > >   kernel /xen-3.4.1.gz dom0_mem=1024M
> > > > 
> > > >   module /vmlinuz-2.6.31-rc8 ro root=/dev/mapper/vg_fdr12-lv_root 
> > > >console=tty0
> > > > 
> > > >   module /initrd-2.6.31-rc8.img
> > > > 
> > > > I have to specify dom0_mem, otherwise stack trace.
> > > >
> > > 
> > > Hmm... what kind of stack trace you get without dom0_mem specified?
> > > 
> > > -- Pasi
> 
> 
> 
> 
>       

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