RE: [Xen-devel] Unable to bring up x86_64 UP DomU on processor #32

["Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx>]

This crude fix, will also require domain_pincpu to take the long
argument.

Thanks & Regards,
Nitin
------------------------------------------------------------------------
-----------
Open Source Technology Center, Intel Corp

>-----Original Message-----
>From: Kamble, Nitin A
>Sent: Saturday, October 22, 2005 1:04 PM
>To: Puthiyaparambil, Aravindh; xen-devel
>Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on processor
#32
>
>A crude way to achieve it can be:
>
>xc.domain_pincpu(self.domid, 0, (0 - (0x80000000 >> (31 - cpu))))
>
>
>It gives this warning while starting xend.
>/usr/lib/python/xen/xend/XendDomainInfo.py:1093: FutureWarning: hex/oct
>constants > sys.maxint will return positive values in Python 2.4 and up
>  xc.domain_pincpu(self.domid, 0, (0 - (0x80000000 >> (31 - cpu))))
>
>
>But it is harmless, and achives the purpose. From the warning seems
like
>python 2.4 onwards should not have this issue. This code is running on
>python version 2.3.4-11.
>
>
>[root@lvt3 ~]# xm create cpu=0 -n
>Using config file "/etc/xen/xmdefconfig".
>(vm
>    (name ExampleVMXDomain)
>    (memory 128)
>    (ssidref 0)
>    (cpu 0)
>    (image
>        (vmx
>            (kernel /usr/lib/xen/boot/vmxloader)
>            (vcpus 1)
>            (device_model /usr/lib/xen/bin/qemu-dm)
>            (vcpus 1)
>            (boot c)
>            (vnc 1)
>            (vncviewer 1)
>        )
>    )
>    (device
>        (vbd (uname file:/var/images/min-el3-i386.img) (dev ioemu:hda)
>(mode w))
>    )
>    (device (vif (mac aa:00:00:2e:97:73)))
>)
>[root@lvt3 ~]# xm create cpu=31 -n
>Using config file "/etc/xen/xmdefconfig".
>(vm
>    (name ExampleVMXDomain)
>    (memory 128)
>    (ssidref 0)
>    (cpu 31)
>    (image
>        (vmx
>            (kernel /usr/lib/xen/boot/vmxloader)
>            (vcpus 1)
>            (device_model /usr/lib/xen/bin/qemu-dm)
>            (vcpus 1)
>            (boot c)
>            (vnc 1)
>            (vncviewer 1)
>        )
>    )
>    (device
>        (vbd (uname file:/var/images/min-el3-i386.img) (dev ioemu:hda)
>(mode w))
>    )
>    (device (vif (mac aa:00:00:6b:f3:ec)))
>)
>
>Thanks & Regards,
>Nitin
>-----------------------------------------------------------------------
----
>--------
>Open Source Technology Center, Intel Corp
>>-----Original Message-----
>>From: Puthiyaparambil, Aravindh
>>[mailto:aravindh.puthiyaparambil@xxxxxxxxxx]
>>Sent: Saturday, October 22, 2005 12:39 PM
>>To: xen-devel
>>Cc: Kamble, Nitin A
>>Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
processor
>#32
>>
>>The reason why this is happening is that on line 1093 in
>>XendDomainInfo.py, "1" is being treated as an int. My python skills
are
>>weak. How can I cast it as a long or unsigned long? I tried using
long()
>>and "0x1L". Both don't seem to be working.
>>
>>XendDomainInfo.py: 1093     xc.domain_pincpu(self.domid, 0, 1 << cpu)
>>
>>Thanks,
>>Aravindh
>>
>>> -----Original Message-----
>>> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
>>> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Puthiyaparambil, Aravindh
>>> Sent: Friday, October 21, 2005 5:49 PM
>>> To: Kamble, Nitin A; xen-devel
>>> Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>>processor
>>> #32
>>>
>>> Nitin,
>>>
>>> Thanks for the lead. This is what /var/log/xend-debug.log says:
>>>
>>> OverflowError: signed integer is greater than maximum
>>> mainInfo.create(config)
>>>   File
>>>
>>"/root/xen/xen-unstable.hg/dist/install/usr/lib64/python/xen/xend/Xend
Do
>>> mainInfo.py", line 147, in create
>>>     vm.initDomain()
>>>   File
>>>
>>"/root/xen/xen-unstable.hg/dist/install/usr/lib64/python/xen/xend/Xend
Do
>>> mainInfo.py", line 1093, in initDomain
>>>     xc.domain_pincpu(self.domid, 0, 1 << cpu)
>>> OverflowError: signed integer is greater than maximum
>>> cpus          = self.vm.getVCpuCount())
>>> error: (0, 'Error')
>>> Failed allocation for dom 19: 893952 pages order 0 addr_bits 0
>>>
>>> Aravindh
>>>
>>> > -----Original Message-----
>>> > From: Kamble, Nitin A [mailto:nitin.a.kamble@xxxxxxxxx]
>>> > Sent: Friday, October 21, 2005 5:38 PM
>>> > To: Puthiyaparambil, Aravindh; xen-devel
>>> > Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>>> processor
>>> > #32
>>> >
>>> > That's Good to know. Then this should be easy to fix. Probably the
>>> > python code (xm, xend) has some issue.
>>> >   You can look at /var/log/xen* files to see what is the reason of
>>the
>>> > error.
>>> >
>>> > Thanks & Regards,
>>> > Nitin
>>> >
>>>
>>----------------------------------------------------------------------
--
>>> > -----------
>>> > Open Source Technology Center, Intel Corp
>>> >
>>> > >-----Original Message-----
>>> > >From: Puthiyaparambil, Aravindh
>>> > >[mailto:aravindh.puthiyaparambil@xxxxxxxxxx]
>>> > >Sent: Friday, October 21, 2005 2:35 PM
>>> > >To: Kamble, Nitin A; xen-devel
>>> > >Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>>> processor
>>> > #32
>>> > >
>>> > >Nitin,
>>> > >
>>> > >When I don't specify "cpu=n", the domain does come up on CPU #32.
>>> > >
>>> > >Name                              ID  VCPU  CPU  State  Time(s)
>>CPU
>>> > Map
>>> > >Domain-0                           0     0    0   r--      80.1
>>> > >0xffffffffffffffff
>>> > >vm1                                1     0   31   r--       7.6
>>> > >0xffffffffffffffff
>>> > >
>>> > >
>>> > >But shouldn't I be able to specify "cpu=31"?
>>> > >
>>> > >Thanks,
>>> > >Aravindh
>>> > >
>>> > >> -----Original Message-----
>>> > >> From: Kamble, Nitin A [mailto:nitin.a.kamble@xxxxxxxxx]
>>> > >> Sent: Friday, October 21, 2005 5:16 PM
>>> > >> To: Puthiyaparambil, Aravindh; xen-devel
>>> > >> Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>>> > >processor
>>> > >> #32
>>> > >>
>>> > >> Aravindh,
>>> > >>    By default Domains are assigned highest least loaded cpu. So
>>> domU
>>> > >> should get the CPU 31 as a default if you don't specify cpu=n
>>> option.
>>> > >>
>>> > >>   What do you see if you don't specify the "cpu=n"?
>>> > >>
>>> > >> Thanks & Regards,
>>> > >> Nitin
>>> > >>
>>> >
>>>
>>>---------------------------------------------------------------------
--
>>> > -
>>> > >> -----------
>>> > >> Open Source Technology Center, Intel Corp
>>> > >>
>>> > >> >-----Original Message-----
>>> > >> >From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
>>> > >> >bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Puthiyaparambil,
>>> Aravindh
>>> > >> >Sent: Friday, October 21, 2005 2:11 PM
>>> > >> >To: xen-devel
>>> > >> >Subject: [Xen-devel] Unable to bring up x86_64 UP DomU on
>>> processor
>>> > >#32
>>> > >> >
>>> > >> >I am running x86_64 Xen on an ES7000 with 32 logical
processors.
>>I
>>> > am
>>> > >> >trying to force a DomU to come up on CPU #32 by specifying
>>> "cpu=31"
>>> > >in
>>> > >> >the DomU configuration file. "xm" gives me the following error
>>> > >message:
>>> > >> >
>>> > >> >"Error: Error creating domain: signed integer is greater than
>>> > >maximum"
>>> > >> >
>>> > >> >I am able to do "cpu=30" successfully.
>>> > >> >
>>> > >> >Is this a bug? Should I be opening up a bug report?
>>> > >> >
>>> > >> >BTW, this does NOT happen on x86_32 PAE.
>>> > >> >
>>> > >> >Aravindh
>>> > >> >
>>> > >> >_______________________________________________
>>> > >> >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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