Andre Przywara wrote:
Dave Young wrote:
Hi,
With today's git version (qemu-kvm), I got following message in
kernel dmesg
[168344.215605] kvm: 27289: cpu0 unhandled wrmsr: 0x198 data 0
Are you sure about that? 0x198 is an Intel architectural perfmon MSR
and it is read-only. The Linux kernel source I grep'ed obeys this and
does only rdmsr.
You can work around this by changing the error to a warning with:
# modprobe kvm ignore_msrs=1
I'd like to see more details about the guest Linux kernel, at least
the version you used to see why there is a wrmsr on this address. Best
is you provide the kernel (just the vmlinuz file) somewhere so that we
can reproduce this. Also the qemu-kvm command line would be interesting.
I see the same with Ubuntu 10.04 64-bit (2.6.32-21-server)
cmdline:
/usr/bin/qemu-kvm-devel -net
tap,vlan=141,script=no,downscript=no,ifname=tap0 -net
nic,vlan=141,model=e1000,macaddr=52:54:00:ff:00:73 -drive
format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-c0c61b105-db8000e7e954bf65-migration-test-2,if=ide,boot=on,cache=none,aio=native
-m 1024 -cpu qemu64,model_id='Intel(R) Xeon(R) CPU E5520 @
2.27GHz',-kvmclock -monitor tcp:0:4001,server,nowait -vnc :1 -name
'migration-test-10-04' -boot order=dc,menu=on -k de -pidfile
/var/run/qemu/vm-156.pid -mem-path /hugepages -mem-prealloc -rtc
base=utc,clock=host -usb -usbdevice tablet
Regards,
Andre.
bash-3.1$ /home/dave/tmp/qemu-system-x86_64 --version
QEMU emulator version 0.12.50 (qemu-kvm-devel), Copyright (c)
2003-2008 Fabrice Bellard
bash-3.1$ uname -a
Linux darkstar 2.6.35-rc1 #35 SMP Mon May 31 16:50:15 CST 2010 x86_64
Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz GenuineIntel GNU/Linux
host distribution is slackware64-13.0
0.12.3 works well
BTW the guest is a tiny core linux image
--
Mit freundlichen Grüßen/Kind Regards
Peter Lieven
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KAMP Netzwerkdienste GmbH
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