VMWare host shows microcode messages for RHEL guests

Solution Unverified - Updated -


  • The following message is logged by VMware:
The guest OS tried to update the microcode from patch
level 9 (9h) to patch level 17 (17h), but VMware ESX
does not allow microcode patches to be applied from
within a virtual machine
  • Is there some mechanism other than updating Kernel-Firmware which can attempt to update microcode?


  • Red Hat Enterprise Linux 6.4

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