Xen devel - Oct 2005 - RE: Fix for SMP xen dom0/domU for x86_64

The Patch I made for SMP dom0 is also applicable to SMP domU. The issue
is same for dom0 & domu as they both are compiled from the same code.
The dom0 fix I sent earlier also fixes the domU SMP issue.

Thanks & Regards,
Nitin
------------------------------------------------------------------------
-----------
Open Source Technology Center, Intel Corp
>-----Original Message-----
>From: xen-devel-bounces@lists.xensource.com [mailto:xen-devel-
>bounces@lists.xensource.com] On Behalf Of David F Barrera
>Sent: Tuesday, October 18, 2005 2:20 PM
>To: Puthiyaparambil, Aravindh
>Cc: xen-devel
>Subject: RE: [Xen-devel] Unable to bring up SMP DomUs on x86_64 Xen
>
>On the SLES 9 SP2 system, I do see the stop_this_cpu.. message (my
>original response was from an FC4 based system):
>
>(XEN) (file=traps.c, line=968) Non-priv domain attempted
>RDMSR(00000000c0000100,00000045,ffffffffff5fd000).
>(XEN) (file=traps.c, line=968) Non-priv domain attempted
>RDMSR(00000000c0000101,00000000,00000000).
>(XEN) (file=traps.c, line=968) Non-priv domain attempted
>RDMSR(00000000c0000102,803c7b80,ffffffff).
>stop_this_cpu disable_local_APIC
>
>On Tue, 2005-10-18 at 17:15 -0400, Puthiyaparambil, Aravindh wrote:
>> Dave,
>>
>> Thanks for confirming it. I have opened a Bugzilla report.
>>
>> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=342
>>
>> Aravindh
>>
>> > On Tue, 2005-10-18 at 16:45 -0400, Puthiyaparambil, Aravindh
wrote:
>> > > I was trying to bring up a SMP DomU on Xen x86_64. The DomU
dies
>> while
>> > > booting processor 1/1. This is in spite of the fact that I
have
set
>> > > vcpus to 4 in the DomU configuration file. I confirmed that
the
DomU
>> > > kernel was compiled with SMP turned on. I am seeing this on
the
Dell
>> and
>> > > ES7000 x86_64 boxes. Is anyone else seeing this issue or am I
doing
>> > > something wrong?
>> >
>> > I am seeing it, too:
>> > [root@bl2-10 ~]# xm create -c /tmp/xen/test.cfg
>> > Using config file "/tmp/xen/test.cfg".
>> > Started domain vm1
>> > Linux version 2.6.12-xenU (root@bl2-10) (gcc version 4.0.0
20050405
>> (Red
>> > Hat 4.0
>> > .0-0.40)) #1 SMP Tue Oct 18 07:05:25 CDT 2005
>> > kernel direct mapping tables upto 20000000 @ 50e000-610000
>> > Built 1 zonelists
>> > Kernel command line:  root=/dev/sdb2 ro
>> > Initializing CPU#0
>> > PID hash table entries: 4096 (order: 12, 131072 bytes)
>> > Xen reported: 3600.124 MHz processor.
>> > Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
>> > Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
>> > Memory: 509440k/524288k available (1921k kernel code, 14336k
reserved,
>> > 639k data
>> > , 136k init)
>> > Mount-cache hash table entries: 256
>> > CPU: Trace cache: 12K uops, L1 D cache: 16K
>> > CPU: L2 cache: 1024K
>> > CPU: Physical Processor ID: 3
>> > Booting processor 1/1 rip ffffffff80100008 rsp ffff880000655f58
>> > Initializing CPU#1
>> > CPU: Trace cache: 12K uops, L1 D cache: 16K
>> > CPU: L2 cache: 1024K
>> > CPU: Physical Processor ID: 0
>> >                   Intel(R) Xeon(TM) CPU 3.60GHz stepping 01
>> > Booting processor 2/2 rip ffffffff80100008 rsp ffff88000069ff58
>> > Initializing CPU#2
>> > CPU: Trace cache: 12K uops, L1 D cache: 16K
>> > CPU: L2 cache: 1024K
>> > CPU: Physical Processor ID: 0
>> >                   Intel(R) Xeon(TM) CPU 3.60GHz stepping 01
>> > Booting processor 3/3 rip ffffffff80100008 rsp ffff880000089f58
>> > Initializing CPU#3
>> > CPU: Trace cache: 12K uops, L1 D cache: 16K
>> > CPU: L2 cache: 1024K
>> > CPU: Physical Processor ID: 3
>> >                   Intel(R) Xeon(TM) CPU 3.60GHz stepping 01
>> > Brought up 4 CPUs
>> >
>> > ------------------------------------------------
>> >
>> > I am not seeing the stop_this_cpu... message, however. You may
want
to
>> > write a defect on the Xen bugzilla, or, if you''d like, I
can do it.
>> >
>> > David
>> >
>> > >
>> > > Aravindh
>> > >
>> > > DomU BOOT OUTPUT
>> > > ----------------
>> > > xenbox:~/xen/vm # xm create dom64_2 -c
>> > > Using config file "dom64_2".
>> > > Started domain dom64_2
>> > > Linux version 2.6.12-xenU (root@xenbox) (gcc version 3.3.3
(SuSE
>> Linux))
>> > > #1 SMP Tue Oct 18 16:17:52 EDT 2005
>> > > kernel direct mapping tables upto 18000000 @ 474000-536000
>> > > Built 1 zonelists
>> > > Kernel command line:  root=/dev/sda1 ro 3
>> > > Initializing CPU#0
>> > > PID hash table entries: 2048 (order: 11, 65536 bytes)
>> > > Xen reported: 2992.694 MHz processor.
>> > > Dentry cache hash table entries: 65536 (order: 7, 524288
bytes)
>> > > Inode-cache hash table entries: 32768 (order: 6, 262144
bytes)
>> > > Memory: 381952k/393216k available (1669k kernel code, 10836k
>> reserved,
>> > > 560k data, 136k init)
>> > > Mount-cache hash table entries: 256
>> > > CPU: Trace cache: 12K uops, L1 D cache: 16K
>> > > CPU: L2 cache: 1024K
>> > > CPU: Physical Processor ID: 0
>> > > Booting processor 1/1 rip ffffffff80100008 rsp
ffff880000575f58
>> > >
>> > > SERIAL OUTPUT
>> > > -------------
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000080,00018000,00018000).
>> > > (XEN) (file=traps.c, line=960) Non-priv domain attempted
>> > > WRMSR(00000000c0000100,00000000,00000000).
>> > > (XEN) (file=traps.c, line=960) Non-priv domain attempted
>> > > WRMSR(00000000c0000102,00000000,00000000).
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000080,00000000,00000000).
>> > > (XEN) (file=traps.c, line=960) Non-priv domain attempted
>> > > WRMSR(00000000c0000100,00000000,00000000).
>> > > (XEN) (file=traps.c, line=960) Non-priv domain attempted
>> > > WRMSR(00000000c0000102,00000000,00000000).
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000080,00000000,00000000).
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000100,00000045,ffffffffff5fd000).
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000101,00000000,00000000).
>> > > (XEN) (file=traps.c, line=968) Non-priv domain attempted
>> > > RDMSR(00000000c0000102,80372b00,ffffffff).
>> > > stop_this_cpu disable_local_APIC
>> > >
>> > > _______________________________________________
>> > > Xen-devel mailing list
>> > > Xen-devel@lists.xensource.com
>> > > http://lists.xensource.com/xen-devel
>> > >
>> > --
>> > Regards,
>> >
>> > David F Barrera
>> > Linux Technology Center
>> > Systems and Technology Group, IBM
>> >
>> > "The wisest men follow their own direction. "
>> >                                                         Euripides
>>
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
>>
>
>
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