cpu0 unhandled rdmsr: 0x345


New Member
Feb 6, 2014

we are comparing different products for our new servers. We really like Proxmox, but there is one problem that we are not even sure what does it mean.
Every time we try to run Debian graphical installation on VM, we get an error saying "cpu0 unhandled rdmsr: 0x345". It's happening only when CPU type is set to "host", which is supposed to be the fastest method.
What does this error message mean? Because everything is working correctly.
Our lab server is Dell PowerEdge T110 II. Proxmox is installed based on Debian Wheezy 7.3.0 according to this manual: http://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_Wheezy



Renowned Member
Mar 1, 2012
This has been addressed many times. From the KVM mailing list. Its harmless. KVM included MSR_IA32_PERF_STATUS (0x198) in the msrsave/restore list, but there is no write emulation for it, which generates the warning.


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