Ошибки dmesg kvm

[yaroslavukr]

Здравствуйте,
Увидел много ошибок в dmesg
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0xffffffffff1b1e41
__ratelimit: 929 callbacks suppressed
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0xffffffffff1b1e41
kvm: 2091: cpu0 disabled perfctr wrmsr: 0x186 data 0x5100c0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0x0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0x0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0x186 data 0x5100c0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0x0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0xffffffffff1b1e41
kvm: 2091: cpu0 disabled perfctr wrmsr: 0x186 data 0x5100c0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0x0
kvm: 2091: cpu0 disabled perfctr wrmsr: 0xc1 data 0x0
__ratelimit: 869 callbacks suppressed
kvm: 2091: cpu2 disabled perfctr wrmsr: 0xc1 data 0xffffffffff1b1e41
kvm: 2091: cpu2 disabled perfctr wrmsr: 0x186 data 0x5100c0
kvm: 2091: cpu2 disabled perfctr wrmsr: 0xc1 data 0x0
.....

[root@mirror3 ~]# /sbin/lsmod | grep kvm
kvm_intel 52570 13
kvm 314739 1 kvm_intel

ОС CentOS 6.3 x64
Виртуализация KVM

[Naymen]

На CentOS 7.2 точно такая же ошибка.
В https://bugzilla.redhat.com/show_bug.cgi?id=507085
решения не нашел.

Выделение_039.jpg

[Lazek]

Здравствуйте,

Увидел на одном из серверов подобное, решил посмотреть подробности, это не ошибка, больше деталей доступно по ссылке:
https://bugzilla.redhat.com/show_bug.cgi?id=609032

Jes Sorensen 2010-06-30 08:41:38 EDT Ok, did a bit more checking of this.

From the adds above:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 6

All the instances of writes to MSR 0xc1 and 0x186 as the ones you report
are done in the guest kernel via native_write_msr_safe() which is a safe
function for probing. Note that with cpu_family 6 which is P6, PMU support
is not specified via CPUID leaf 0xa, so the kernel has to probe for it,
which is what you are seeing.

This is harmless and expected behaviour.

Closing

Jes