error messages when starting proxmox

[Cor]

During startup every time I see the following messages appear on the screen what to do about this?

 

[dcsapak]

do you have a guest with cpu=host?
then this is completely normal and not an error, more a warning..
you can disable them with:

echo 1 > /sys/module/kvm/parameters/ignore_msrs

 

[efeu]

I have that option set as well and cpu=Haswell, but this messages still appear.

You can stop this error message to appear by lowering your kernel log level:
echo 2 >/proc/sys/kernel/printk