[CentOS-virt] how to update ucode with xen

On 09/18/2018 11:55 PM, Christoph wrote:
> 
> Hi
> 
> can someone say me how to update the µcode of the cpu with xen?
> 
> I have added the ucode=scan parameter to xen but it does not seem to work...
> 
> the µcode version of my xeon is really old :/
> 
> model name    : Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
> microcode    : 0x10
> 

We use ucode=-1 and provide it as a module for grub.