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xen-devel
Re: [Xen-devel] Re: Panic on cpu0
On Thu, Dec 16, 2010 at 11:47:19AM +0000, Keir Fraser wrote:
> You might need a line like the following in /etc/fstab in dom0:
> none /proc/xen xenfs defaults 0 0
>
And if that doesn't help then there's this wiki page with
troubleshooting info:
http://wiki.xen.org/xenwiki/XenCommonProblems#head-26434581604cc8357d9762aaaf040e8d87b37752
-- Pasi
> -- Keir
>
> On 16/12/2010 11:24, "ZhouPeng" <zpengxen@xxxxxxxxx> wrote:
>
> > Thank you for your reply.
> >
> > We want to work in 32-bit system.
> > And fortunately we don't need IOMMU and passthr at the present.
> >
> > There is another problem:
> > xend start failed
> > err msg is:
> > xen.lowlevel.xc.Error: (1, "Internal error"), 'Could not obtain handle on
> > privileged command interface (2 = No such file or directory)'
> >
> > I find there is nothing in "/proc/xen/" but there is privcmd.o in
> > "bulid-linux-2.6-pvos_x86_32/drivers/xen/xenfs/"
> >
> > 2010/12/16 Keir Fraser <keir@xxxxxxx>
> >> Could you build a 64-bit hypervisor instead? In all honesty, the 32-bit
> >> build gets hardly any testing these days, and not much love.
> >>
> >> -- Keir
> >>
> >> On 16/12/2010 09:41, "ZhouPeng" <zpengxen@xxxxxxxxx> wrote:
> >>
> >>> The bug exist in iommu(Intel VT-d) support code.
> >>>
> >>> After I disabled the vt-d in bios, system can boot properly.
> >>>
> >>> 2010/12/16 ZhouPeng <zpengxen@xxxxxxxxx>
> >>>> The err msg appears in
> >>>> void *map_domain_page(unsigned long mfn)
> >>>> BUG_ON(idx >= MAPCACHE_ENTRIES);
> >>>>
> >>>> printk idx is 1024 and BUG_ON is called.
> >>>>
> >>>> I print Xen call trace msg:
> >>>>
> >>>> [<ffcd3c2>] map_domain_page+0x1a2/0x230
> >>>> [<ff1cd718>] unmap_domain_page+0x148/0x160
> >>>> addr_to_dma_page_maddr+0x1f6/0x250
> >>>> __find_next_zero_bit+0x80/0x90
> >>>> intel_iommu_map_page+0x14a/0x250
> >>>> domain_context_mapping+0x14a/0x250
> >>>> rmrr_identity_mapping+0xb7/0x120
> >>>> intel_iommu_dom0_init+0x143/0x1eb
> >>>> construct_dom0+0x138f/0x16b0
> >>>> __start_xen+0x109a/0x1680
> >>>> e820nf+0x0/0x4
> >>>> __high_start+0x58/0x5a
> >>>>
> >>>> 2010/12/16 Pasi Kärkkäinen <pasik@xxxxxx>
> >>>>
> >>>>> On Thu, Dec 16, 2010 at 03:41:17PM +0800, ZhouPeng wrote:
> >>>>>> (XEN) Panic on CPU 0:
> >>>>>> (XEN) Xen BUG at domain_page.c:102
> >>>>>>
> >>>>>> Any solutions?
> >>>>>>
> >>>>>
> >>>>> You need to post the full boot log, including all output from both Xen
> >>>>> and
> >>>>> dom0 Linux.
> >>>>> See: http://wiki.xen.org/xenwiki/XenSerialConsole
> >>>>>
> >>>>> -- Pasi
> >>>>>
> >>>>>> 2010/12/16 ZhouPeng <[1]zpengxen@xxxxxxxxx>
> >>>>>>
> >>>>>> Hi all,
> >>>>>>
> >>>>>> I build xen4.1 from the tarbll (with kernel 2.6.32.26 downloaded
> >>>>>> by
> >>>>>> default) on fedora8.
> >>>>>>
> >>>>>> After installing, I get the err msg on startup:
> >>>>>>
> >>>>>> (XEN) Panic on CPU 0:
> >>>>>> (XEN) Xen BUG at domain_page.c:102
> >>>>>>
> >>>>>> 5 seconds later, the machine reboot.
> >>>>>>
> >>>>>> How to deal with this problem.
> >>>>>>
> >>>>>> Thanks,
> >>>>>> --
> >>>>>> Zhou Peng
> >>>>>> My daily E-Mail: [2]ailvpeng25@xxxxxxxxx
> >>>>>>
> >>>>>> --
> >>>>>> Zhou Peng
> >>>>>> My daily E-Mail: [3]ailvpeng25@xxxxxxxxx
> >>>>>>
> >>>>>> References
> >>>>>>
> >>>>>> Visible links
> >>>>>> 1. mailto:zpengxen@xxxxxxxxx
> >>>>>> 2. mailto:ailvpeng25@xxxxxxxxx
> >>>>>> 3. mailto:ailvpeng25@xxxxxxxxx
> >>>>>
> >>>>>> _______________________________________________
> >>>>>> 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
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