Re: [Xen-devel] Re: [PATCH 0/3] x86/microcode: support for microcode update in Xen dom0

Christoph Egger
2011-10-18T08:58:21Z

On 10/17/11 19:40, H. Peter Anvin wrote:
> On 10/17/2011 10:08 AM, Konrad Rzeszutek Wilk wrote:
>>
>> <scratches his head>
>> You are still using the microcode API (the existing one) to
>> program the CPUs right? It is just that you are fetching the images
>> much much earlier than it currently is done?
>>
>
> No, the goal is to ditch the existing API and load the CPUs very early
> in the start path.
>
> -hpa

I think this approach is good to get the microcode applied as
early as possible at boot time. But on servers you usually do not want
to reboot the machine unless you do a BIOS update which will apply
the new microcode anyway. So for applying the microcode update
at runtime I would like to keep the existing API.

Christoph

--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85689 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632