Panic on cpu0

Panic on cpu0

[ZhouPeng]

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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) BUG at domain_page.c

5 seconds later, the machine reboot.

How to deal with this problem.

Thanks,

-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Panic on cpu0

[ZhouPeng]

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(XEN) Panic on CPU 0:
(XEN) Xen BUG at domain_page.c:102

Any solutions?

2010/12/16 ZhouPeng <zpengxen@gmail.com>

> 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: ailvpeng25@gmail.com
>



-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Re: Panic on cpu0

[Pasi Kärkkäinen]

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@gmail.com>
> 
>      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@gmail.com
> 
>    --
>    Zhou Peng
>    My daily E-Mail: [3]ailvpeng25@gmail.com
> 
> References
> 
>    Visible links
>    1. mailto:zpengxen@gmail.com
>    2. mailto:ailvpeng25@gmail.com
>    3. mailto:ailvpeng25@gmail.com

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: Re: Panic on cpu0

[ZhouPeng]

[-- Attachment #1.1: Type: text/plain, Size: 2155 bytes --]

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@iki.fi>

> 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@gmail.com>
> >
> >      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@gmail.com
> >
> >    --
> >    Zhou Peng
> >    My daily E-Mail: [3]ailvpeng25@gmail.com
> >
> > References
> >
> >    Visible links
> >    1. mailto:zpengxen@gmail.com
> >    2. mailto:ailvpeng25@gmail.com
> >    3. mailto:ailvpeng25@gmail.com
>
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xensource.com
> > http://lists.xensource.com/xen-devel
>
>


-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Re: Panic on cpu0

[ZhouPeng]

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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@gmail.com>

> 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@iki.fi>
>
> 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@gmail.com>
>> >
>> >      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@gmail.com
>> >
>> >    --
>> >    Zhou Peng
>> >    My daily E-Mail: [3]ailvpeng25@gmail.com
>> >
>> > References
>> >
>> >    Visible links
>> >    1. mailto:zpengxen@gmail.com
>> >    2. mailto:ailvpeng25@gmail.com
>> >    3. mailto:ailvpeng25@gmail.com
>>
>> > _______________________________________________
>> > Xen-devel mailing list
>> > Xen-devel@lists.xensource.com
>> > http://lists.xensource.com/xen-devel
>>
>>
>
>
> --
> Zhou Peng
> My daily E-Mail: ailvpeng25@gmail.com
>



-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Re: Panic on cpu0

[Keir Fraser]

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@gmail.com> 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@gmail.com>
>> 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@iki.fi>
>> 
>>> 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@gmail.com>
>>>> 
>>>>      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@gmail.com
>>>> 
>>>>    --
>>>>    Zhou Peng
>>>>    My daily E-Mail: [3]ailvpeng25@gmail.com
>>>> 
>>>> References
>>>> 
>>>>    Visible links
>>>>    1. mailto:zpengxen@gmail.com
>>>>    2. mailto:ailvpeng25@gmail.com
>>>>    3. mailto:ailvpeng25@gmail.com
>>> 
>>>> _______________________________________________
>>>> Xen-devel mailing list
>>>> Xen-devel@lists.xensource.com
>>>> http://lists.xensource.com/xen-devel
>>> 
>> 
>> 

Re: Re: Panic on cpu0

[ZhouPeng]

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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@xen.org>

> 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@gmail.com> 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@gmail.com>
> >> 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@iki.fi>
> >>
> >>> 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@gmail.com>
> >>>>
> >>>>      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@gmail.com
> >>>>
> >>>>    --
> >>>>    Zhou Peng
> >>>>    My daily E-Mail: [3]ailvpeng25@gmail.com
> >>>>
> >>>> References
> >>>>
> >>>>    Visible links
> >>>>    1. mailto:zpengxen@gmail.com
> >>>>    2. mailto:ailvpeng25@gmail.com
> >>>>    3. mailto:ailvpeng25@gmail.com
> >>>
> >>>> _______________________________________________
> >>>> Xen-devel mailing list
> >>>> Xen-devel@lists.xensource.com
> >>>> http://lists.xensource.com/xen-devel
> >>>
> >>
> >>
>
>
>


-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Re: Panic on cpu0

[Pasi Kärkkäinen]

On Thu, Dec 16, 2010 at 07:24:51PM +0800, ZhouPeng wrote:
>    Thank you for your reply.
> 
>    We want to  work in 32-bit system.
>

You know you can have a 32bit dom0 kernel running on 64bit Xen hypervisor?

-- Pasi

>    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 <[1]keir@xen.org>
> 
>      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" <[2]zpengxen@gmail.com> 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 <[3]zpengxen@gmail.com>
>      >> 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 <[4]pasik@iki.fi>
>      >>
>      >>> 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: [5]http://wiki.xen.org/xenwiki/XenSerialConsole
>      >>>
>      >>> -- Pasi
>      >>>
>      >>>>    2010/12/16 ZhouPeng <[1][6]zpengxen@gmail.com>
>      >>>>
>      >>>>      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][7]ailvpeng25@gmail.com
>      >>>>
>      >>>>    --
>      >>>>    Zhou Peng
>      >>>>    My daily E-Mail: [3][8]ailvpeng25@gmail.com
>      >>>>
>      >>>> References
>      >>>>
>      >>>>    Visible links
>      >>>>    1. mailto:[9]zpengxen@gmail.com
>      >>>>    2. mailto:[10]ailvpeng25@gmail.com
>      >>>>    3. mailto:[11]ailvpeng25@gmail.com
>      >>>
>      >>>> _______________________________________________
>      >>>> Xen-devel mailing list
>      >>>> [12]Xen-devel@lists.xensource.com
>      >>>> [13]http://lists.xensource.com/xen-devel
>      >>>
>      >>
>      >>
> 
>    --
>    Zhou Peng
>    My daily E-Mail: [14]ailvpeng25@gmail.com
> 
> References
> 
>    Visible links
>    1. mailto:keir@xen.org
>    2. mailto:zpengxen@gmail.com
>    3. mailto:zpengxen@gmail.com
>    4. mailto:pasik@iki.fi
>    5. http://wiki.xen.org/xenwiki/XenSerialConsole
>    6. mailto:zpengxen@gmail.com
>    7. mailto:ailvpeng25@gmail.com
>    8. mailto:ailvpeng25@gmail.com
>    9. mailto:zpengxen@gmail.com
>   10. mailto:ailvpeng25@gmail.com
>   11. mailto:ailvpeng25@gmail.com
>   12. mailto:Xen-devel@lists.xensource.com
>   13. http://lists.xensource.com/xen-devel
>   14. mailto:ailvpeng25@gmail.com

Re: Re: Panic on cpu0

[ZhouPeng]

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Hi Pasi,

How to build and load 32bit dom0 in 64bit Xen hypervisor?

How to build 64 bit Xen hypervisor on my Linux 32 bits fc8 pls?

2010/12/16 Pasi Kärkkäinen <pasik@iki.fi>

> On Thu, Dec 16, 2010 at 07:24:51PM +0800, ZhouPeng wrote:
> >    Thank you for your reply.
> >
> >    We want to  work in 32-bit system.
> >
>
> You know you can have a 32bit dom0 kernel running on 64bit Xen hypervisor?
>
> -- Pasi
>
> >    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 <[1]keir@xen.org>
> >
> >      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" <[2]zpengxen@gmail.com> 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 <[3]zpengxen@gmail.com>
> >      >> 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 <[4]pasik@iki.fi>
> >      >>
> >      >>> 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: [5]http://wiki.xen.org/xenwiki/XenSerialConsole
> >      >>>
> >      >>> -- Pasi
> >      >>>
> >      >>>>    2010/12/16 ZhouPeng <[1][6]zpengxen@gmail.com>
> >      >>>>
> >      >>>>      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][7]ailvpeng25@gmail.com
> >      >>>>
> >      >>>>    --
> >      >>>>    Zhou Peng
> >      >>>>    My daily E-Mail: [3][8]ailvpeng25@gmail.com
> >      >>>>
> >      >>>> References
> >      >>>>
> >      >>>>    Visible links
> >      >>>>    1. mailto:[9]zpengxen@gmail.com
> >      >>>>    2. mailto:[10]ailvpeng25@gmail.com
> >      >>>>    3. mailto:[11]ailvpeng25@gmail.com
> >      >>>
> >      >>>> _______________________________________________
> >      >>>> Xen-devel mailing list
> >      >>>> [12]Xen-devel@lists.xensource.com
> >      >>>> [13]http://lists.xensource.com/xen-devel
> >      >>>
> >      >>
> >      >>
> >
> >    --
> >    Zhou Peng
> >    My daily E-Mail: [14]ailvpeng25@gmail.com
> >
> > References
> >
> >    Visible links
> >    1. mailto:keir@xen.org
> >    2. mailto:zpengxen@gmail.com
> >    3. mailto:zpengxen@gmail.com
> >    4. mailto:pasik@iki.fi
> >    5. http://wiki.xen.org/xenwiki/XenSerialConsole
> >    6. mailto:zpengxen@gmail.com
> >    7. mailto:ailvpeng25@gmail.com
> >    8. mailto:ailvpeng25@gmail.com
> >    9. mailto:zpengxen@gmail.com
> >   10. mailto:ailvpeng25@gmail.com
> >   11. mailto:ailvpeng25@gmail.com
> >   12. mailto:Xen-devel@lists.xensource.com
> >   13. http://lists.xensource.com/xen-devel
> >   14. mailto:ailvpeng25@gmail.com
>



-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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_______________________________________________
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http://lists.xensource.com/xen-devel

Re: Re: Panic on cpu0

[Pasi Kärkkäinen]

On Thu, Dec 16, 2010 at 11:25:49PM +0800, ZhouPeng wrote:
>    Hi Pasi,
> 
>    How to build and load 32bit dom0 in 64bit Xen hypervisor?
> 
>    How to build 64 bit Xen hypervisor on my Linux 32 bits fc8 pls?
> 

Usually you build them separately, maybe on different servers,
or on different VMs, or on different chroot..

ie. have a 64bit environment for building the hypervisor,
and 32bit environment to build the dom0 kernel and xen tools/userland.

-- Pasi

>    2010/12/16 Pasi Kärkkäinen <[1]pasik@iki.fi>
> 
>      On Thu, Dec 16, 2010 at 07:24:51PM +0800, ZhouPeng wrote:
>      >    Thank you for your reply.
>      >
>      >    We want to  work in 32-bit system.
>      >
> 
>      You know you can have a 32bit dom0 kernel running on 64bit Xen
>      hypervisor?
> 
>      -- Pasi
>      >    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 <[1][2]keir@xen.org>
>      >
>      >      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" <[2][3]zpengxen@gmail.com> 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 <[3][4]zpengxen@gmail.com>
>      >      >> 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 <[4][5]pasik@iki.fi>
>      >      >>
>      >      >>> 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: [5][6]http://wiki.xen.org/xenwiki/XenSerialConsole
>      >      >>>
>      >      >>> -- Pasi
>      >      >>>
>      >      >>>>    2010/12/16 ZhouPeng <[1][6][7]zpengxen@gmail.com>
>      >      >>>>
>      >      >>>>      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][7][8]ailvpeng25@gmail.com
>      >      >>>>
>      >      >>>>    --
>      >      >>>>    Zhou Peng
>      >      >>>>    My daily E-Mail: [3][8][9]ailvpeng25@gmail.com
>      >      >>>>
>      >      >>>> References
>      >      >>>>
>      >      >>>>    Visible links
>      >      >>>>    1. mailto:[9][10]zpengxen@gmail.com
>      >      >>>>    2. mailto:[10][11]ailvpeng25@gmail.com
>      >      >>>>    3. mailto:[11][12]ailvpeng25@gmail.com
>      >      >>>
>      >      >>>> _______________________________________________
>      >      >>>> Xen-devel mailing list
>      >      >>>> [12][13]Xen-devel@lists.xensource.com
>      >      >>>> [13][14]http://lists.xensource.com/xen-devel
>      >      >>>
>      >      >>
>      >      >>
>      >
>      >    --
>      >    Zhou Peng
>      >    My daily E-Mail: [14][15]ailvpeng25@gmail.com
>      >
>      > References
>      >
>      >    Visible links
>      >    1. mailto:[16]keir@xen.org
>      >    2. mailto:[17]zpengxen@gmail.com
>      >    3. mailto:[18]zpengxen@gmail.com
>      >    4. mailto:[19]pasik@iki.fi
>      >    5. [20]http://wiki.xen.org/xenwiki/XenSerialConsole
>      >    6. mailto:[21]zpengxen@gmail.com
>      >    7. mailto:[22]ailvpeng25@gmail.com
>      >    8. mailto:[23]ailvpeng25@gmail.com
>      >    9. mailto:[24]zpengxen@gmail.com
>      >   10. mailto:[25]ailvpeng25@gmail.com
>      >   11. mailto:[26]ailvpeng25@gmail.com
>      >   12. mailto:[27]Xen-devel@lists.xensource.com
>      >   13. [28]http://lists.xensource.com/xen-devel
>      >   14. mailto:[29]ailvpeng25@gmail.com
> 
>    --
>    Zhou Peng
>    My daily E-Mail: [30]ailvpeng25@gmail.com
> 
> References
> 
>    Visible links
>    1. mailto:pasik@iki.fi
>    2. mailto:keir@xen.org
>    3. mailto:zpengxen@gmail.com
>    4. mailto:zpengxen@gmail.com
>    5. mailto:pasik@iki.fi
>    6. http://wiki.xen.org/xenwiki/XenSerialConsole
>    7. mailto:zpengxen@gmail.com
>    8. mailto:ailvpeng25@gmail.com
>    9. mailto:ailvpeng25@gmail.com
>   10. mailto:zpengxen@gmail.com
>   11. mailto:ailvpeng25@gmail.com
>   12. mailto:ailvpeng25@gmail.com
>   13. mailto:Xen-devel@lists.xensource.com
>   14. http://lists.xensource.com/xen-devel
>   15. mailto:ailvpeng25@gmail.com
>   16. mailto:keir@xen.org
>   17. mailto:zpengxen@gmail.com
>   18. mailto:zpengxen@gmail.com
>   19. mailto:pasik@iki.fi
>   20. http://wiki.xen.org/xenwiki/XenSerialConsole
>   21. mailto:zpengxen@gmail.com
>   22. mailto:ailvpeng25@gmail.com
>   23. mailto:ailvpeng25@gmail.com
>   24. mailto:zpengxen@gmail.com
>   25. mailto:ailvpeng25@gmail.com
>   26. mailto:ailvpeng25@gmail.com
>   27. mailto:Xen-devel@lists.xensource.com
>   28. http://lists.xensource.com/xen-devel
>   29. mailto:ailvpeng25@gmail.com
>   30. mailto:ailvpeng25@gmail.com

Re: Re: Panic on cpu0

[Jan Beulich]

>>> On 16.12.10 at 16:34, Pasi Kärkkäinen<pasik@iki.fi> wrote:
> On Thu, Dec 16, 2010 at 11:25:49PM +0800, ZhouPeng wrote:
>>    Hi Pasi,
>> 
>>    How to build and load 32bit dom0 in 64bit Xen hypervisor?
>> 
>>    How to build 64 bit Xen hypervisor on my Linux 32 bits fc8 pls?
>> 
> 
> Usually you build them separately, maybe on different servers,
> or on different VMs, or on different chroot..
> 
> ie. have a 64bit environment for building the hypervisor,
> and 32bit environment to build the dom0 kernel and xen tools/userland.

Actually, all you need is a cross tool chain.

Jan

Re: Re: Panic on cpu0

[Stefano Stabellini]

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On Thu, 16 Dec 2010, Jan Beulich wrote:
> >>> On 16.12.10 at 16:34, Pasi Kärkkäinen<pasik@iki.fi> wrote:
> > On Thu, Dec 16, 2010 at 11:25:49PM +0800, ZhouPeng wrote:
> >>    Hi Pasi,
> >> 
> >>    How to build and load 32bit dom0 in 64bit Xen hypervisor?
> >> 
> >>    How to build 64 bit Xen hypervisor on my Linux 32 bits fc8 pls?
> >> 
> > 
> > Usually you build them separately, maybe on different servers,
> > or on different VMs, or on different chroot..
> > 
> > ie. have a 64bit environment for building the hypervisor,
> > and 32bit environment to build the dom0 kernel and xen tools/userland.
> 
> Actually, all you need is a cross tool chain.
> 

That's right. On a Debian Lenny it works out of the box, you just need
to export XEN_TARGET_ARCH=x86_64 before calling 'make xen' from.

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Re: Re: Panic on cpu0

[Ian Campbell]

On Wed, 2011-01-05 at 13:37 +0000, Stefano Stabellini wrote:
> On a Debian Lenny it works out of the box,

Or more generally any modern distro.  Not sure if FC8 (2007?) quite
qualifies as that though.

Ian.

Re: Re: Panic on cpu0

[ZhouPeng]

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Which linux distro do you use to build xen?
We succeed to build on fc8(32 and 64 bits), Cent OS(32 and 64 bits), 32 bit
ubuntu(it's boring to find and install many packages by manual).
We tried on fc9~fc12 but failed and we don't know the exact reason. So we
have been using fc8.

2011/1/5 Ian Campbell <Ian.Campbell@citrix.com>

> On Wed, 2011-01-05 at 13:37 +0000, Stefano Stabellini wrote:
> > On a Debian Lenny it works out of the box,
>
> Or more generally any modern distro.  Not sure if FC8 (2007?) quite
> qualifies as that though.
>
> Ian.
>
>


-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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Re: Re: Panic on cpu0

[Ian Campbell]

On Fri, 2011-01-07 at 07:24 +0000, ZhouPeng wrote:
> Which linux distro do you use to build xen?

I use Debian. Mainly Lenny for development work but also some Squeeze
and Sid.

> We succeed to build on fc8(32 and 64 bits), Cent OS(32 and 64 bits),
> 32 bit ubuntu(it's boring to find and install many packages by
> manual).

Ubuntu has a huge number of packages available via APT (using apt-get,
aptitude, synaptic, PackageKit or whatever tool is preferred/recommended
under Ubuntu these days). I'd be surprised if you needed to find and
install _many_ packages manually. Under Debian you don't, AFAIR, need
anything which isn't packaged and available via APT in the main Debian
repositories to build Xen -- I'd be surprised if Ubuntu wasn't in
broadly the same position (since it inherits large parts of Debian's
package pool).

> We tried on fc9~fc12 but failed and we don't know the exact reason. So
> we have been using fc8.

I'm sure plenty of people on the list use Fedora and they are certainly
using things newer than fc8. For example there is an FC13 howto at
http://wiki.xen.org/xenwiki/Fedora13Xen4Tutorial

Ian.


> 
> 2011/1/5 Ian Campbell <Ian.Campbell@citrix.com>
>         On Wed, 2011-01-05 at 13:37 +0000, Stefano Stabellini wrote:
>         > On a Debian Lenny it works out of the box,
>         
>         
>         Or more generally any modern distro.  Not sure if FC8 (2007?)
>         quite
>         qualifies as that though.
>         
>         Ian.
>         
> 
> 
> 
> -- 
> Zhou Peng
> My daily E-Mail: ailvpeng25@gmail.com

Re: Re: Panic on cpu0

[Pasi Kärkkäinen]

On Fri, Jan 07, 2011 at 09:00:56AM +0000, Ian Campbell wrote:
> On Fri, 2011-01-07 at 07:24 +0000, ZhouPeng wrote:
> > Which linux distro do you use to build xen?
> 
> I use Debian. Mainly Lenny for development work but also some Squeeze
> and Sid.
> 
> > We succeed to build on fc8(32 and 64 bits), Cent OS(32 and 64 bits),
> > 32 bit ubuntu(it's boring to find and install many packages by
> > manual).
> 
> Ubuntu has a huge number of packages available via APT (using apt-get,
> aptitude, synaptic, PackageKit or whatever tool is preferred/recommended
> under Ubuntu these days). I'd be surprised if you needed to find and
> install _many_ packages manually. Under Debian you don't, AFAIR, need
> anything which isn't packaged and available via APT in the main Debian
> repositories to build Xen -- I'd be surprised if Ubuntu wasn't in
> broadly the same position (since it inherits large parts of Debian's
> package pool).
> 
> > We tried on fc9~fc12 but failed and we don't know the exact reason. So
> > we have been using fc8.
> 
> I'm sure plenty of people on the list use Fedora and they are certainly
> using things newer than fc8. For example there is an FC13 howto at
> http://wiki.xen.org/xenwiki/Fedora13Xen4Tutorial
> 

Fedora 14 works aswell. I just installed F14 testbox yesterday.
F14 also contains xen-4.0.1-6 rpms out-of-the-box. 

-- Pasi

Re: Re: Panic on cpu0

[Keir Fraser]

You might need a line like the following in /etc/fstab in dom0:
none /proc/xen xenfs defaults 0 0

 -- Keir

On 16/12/2010 11:24, "ZhouPeng" <zpengxen@gmail.com> 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@xen.org>
>> 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@gmail.com> 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@gmail.com>
>>>> 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@iki.fi>
>>>> 
>>>>> 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@gmail.com>
>>>>>> 
>>>>>>      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@gmail.com
>>>>>> 
>>>>>>    --
>>>>>>    Zhou Peng
>>>>>>    My daily E-Mail: [3]ailvpeng25@gmail.com
>>>>>> 
>>>>>> References
>>>>>> 
>>>>>>    Visible links
>>>>>>    1. mailto:zpengxen@gmail.com
>>>>>>    2. mailto:ailvpeng25@gmail.com
>>>>>>    3. mailto:ailvpeng25@gmail.com
>>>>> 
>>>>>> _______________________________________________
>>>>>> Xen-devel mailing list
>>>>>> Xen-devel@lists.xensource.com
>>>>>> http://lists.xensource.com/xen-devel
>>>>> 
>>>> 
>>>> 
>> 
>> 
> 
> 

Re: Re: Panic on cpu0

[Pasi Kärkkäinen]

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@gmail.com> 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@xen.org>
> >> 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@gmail.com> 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@gmail.com>
> >>>> 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@iki.fi>
> >>>> 
> >>>>> 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@gmail.com>
> >>>>>> 
> >>>>>>      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@gmail.com
> >>>>>> 
> >>>>>>    --
> >>>>>>    Zhou Peng
> >>>>>>    My daily E-Mail: [3]ailvpeng25@gmail.com
> >>>>>> 
> >>>>>> References
> >>>>>> 
> >>>>>>    Visible links
> >>>>>>    1. mailto:zpengxen@gmail.com
> >>>>>>    2. mailto:ailvpeng25@gmail.com
> >>>>>>    3. mailto:ailvpeng25@gmail.com
> >>>>> 
> >>>>>> _______________________________________________
> >>>>>> Xen-devel mailing list
> >>>>>> Xen-devel@lists.xensource.com
> >>>>>> http://lists.xensource.com/xen-devel
> >>>>> 
> >>>> 
> >>>> 
> >> 
> >> 
> > 
> > 
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: Re: Panic on cpu0

[ZhouPeng]

[-- Attachment #1.1: Type: text/plain, Size: 3857 bytes --]

Hi Kerr, It works.
Thanks.

2010/12/16 Keir Fraser <keir@xen.org>

> You might need a line like the following in /etc/fstab in dom0:
> none /proc/xen xenfs defaults 0 0
>
>  -- Keir
>
> On 16/12/2010 11:24, "ZhouPeng" <zpengxen@gmail.com> 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@xen.org>
> >> 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@gmail.com> 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@gmail.com>
> >>>> 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@iki.fi>
> >>>>
> >>>>> 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@gmail.com>
> >>>>>>
> >>>>>>      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@gmail.com
> >>>>>>
> >>>>>>    --
> >>>>>>    Zhou Peng
> >>>>>>    My daily E-Mail: [3]ailvpeng25@gmail.com
> >>>>>>
> >>>>>> References
> >>>>>>
> >>>>>>    Visible links
> >>>>>>    1. mailto:zpengxen@gmail.com
> >>>>>>    2. mailto:ailvpeng25@gmail.com
> >>>>>>    3. mailto:ailvpeng25@gmail.com
> >>>>>
> >>>>>> _______________________________________________
> >>>>>> Xen-devel mailing list
> >>>>>> Xen-devel@lists.xensource.com
> >>>>>> http://lists.xensource.com/xen-devel
> >>>>>
> >>>>
> >>>>
> >>
> >>
> >
> >
>
>
>


-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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http://lists.xensource.com/xen-devel

Re: Re: Panic on cpu0

[Jan Beulich]

>>> On 16.12.10 at 10:30, ZhouPeng <zpengxen@gmail.com> wrote:
> 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

Could you give the below patch a try?

Jan

--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1331,6 +1331,7 @@ int domain_context_mapping_one(
     if ( context_set_domain_id(context, domain, iommu) )
     {
         spin_unlock(&iommu->lock);
+        unmap_vtd_domain_page(context_entries);
         return -EFAULT;
     }
 
@@ -1672,6 +1673,7 @@ static int intel_iommu_map_page(
     if ( old.val == new.val )
     {
         spin_unlock(&hd->mapping_lock);
+        unmap_vtd_domain_page(page);
         return 0;
     }
     *pte = new;

Re: Re: Panic on cpu0

[ZhouPeng]

[-- Attachment #1.1: Type: text/plain, Size: 1630 bytes --]

The patch works.
Thanks.

2010/12/16 Jan Beulich <JBeulich@novell.com>

> >>> On 16.12.10 at 10:30, ZhouPeng <zpengxen@gmail.com> wrote:
> > 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
>
> Could you give the below patch a try?
>
> Jan
>
> --- a/xen/drivers/passthrough/vtd/iommu.c
> +++ b/xen/drivers/passthrough/vtd/iommu.c
> @@ -1331,6 +1331,7 @@ int domain_context_mapping_one(
>     if ( context_set_domain_id(context, domain, iommu) )
>     {
>         spin_unlock(&iommu->lock);
> +        unmap_vtd_domain_page(context_entries);
>         return -EFAULT;
>     }
>
> @@ -1672,6 +1673,7 @@ static int intel_iommu_map_page(
>     if ( old.val == new.val )
>     {
>         spin_unlock(&hd->mapping_lock);
> +        unmap_vtd_domain_page(page);
>         return 0;
>     }
>     *pte = new;
>
>
>


-- 
Zhou Peng
My daily E-Mail: ailvpeng25@gmail.com

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