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.
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
--
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 448-3567-12
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