Peter Lieven <pl <at> dlh.net> writes: > > 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 <at> > 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 <at> 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 > >> > > > Hi i am also getting the same errors, When i start he kvm, i was getting the error messages related to wrmsr, from a little bit of google i found out these are harmless and the workaround suggested was to make the errors to warning. but still i can see the warnings coming every time i started the kvm is there an actual fix to remove them. or just simply mask these errors. I am calling the kvm arguments from inside a bash script so the redirecting the output is not working well. my host os is ubuntu 14-04. Thanks in Advance praveen -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
