Nethserver 7
KVM Gast is Linux Mint
After starting the server, I see the following screen:
Why is the message displayed on the login screen. Anyway - I found a workaround on the internet. I’m not sure, should I do that?
Question: Is there a log file for KVM on the Nethserver?
I hope you can help me.
Best regards Mario
@Hunv says so:
Hi Mario,
I myself have nothing to do with KVM, but I found this post:
https://bugzilla.redhat.com/show_bug.cgi?id=874627
That sounds to me as if it were e.g. could be that the VM is emulating a newer CPU generation than the physical CPU. As a result, of course, some CPU commands are not available, but the guest tries to use.
Times so easy my first thoughts about it freely shot: slight_smile:
Are NethServer host and Mint guest working? Then the warning may be ignored. The workaround only disables the warning.
Looks like the problem is in host linux kernel kvm code, not in qemu.
Until kvm code is fixed, this works as temporary workaround:
echo 1 >/sys/module/kvm/parameters/ignore_msrs
Yes Nethserver and Guest ist allready working.
sure the message is gone but is it fixed?
You know, if I ignore this message, the system may work with a bug. What is the result of it. Is the system still safe?
And I ask again, why is this message shown on the login screen? Before I logged in.
I read mostly that it’s a warning to ignore but some people report about freezing systems too. Did you try to change the guest CPU as described in the link of @Hunv?
This is not an issue, see for example: Bug #1208540 “RDMSR of register 0x345 (IA32_PERF_CAPABILITIES) f...” : Bugs : QEMU
This is quite usual behaviour with kernel messages.