[CentOS-virt] how to update ucode with xen

Can you write a howto for this?

Am 2018-09-19 19:50, schrieb Sarah Newman:
> 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.

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Greetz