Re: [PATCH v5 00/12] x86/microcode: Early load microcode

From: H. Peter Anvin
Date: Thu Jan 03 2013 - 12:49:18 EST

On 01/03/2013 09:44 AM, Konrad Rzeszutek Wilk wrote:

A couple of questions - why the usage of native_[read|write]_msr? I get the
__native_cpuid variant, but I am not sure I understand why you are using
the native_* variants. Especially as this code ends up being called on
Xen and lguest (at least on 64-bit) and probably should go through the
paravirt interfaces.

For Xen, the early microcode update should be done in the hypervisor launch.

However, if you have a more specific flow in mind please clarify. Keep in mind Xen is largely a black box to non-Xen developers
(#include <stdrant.h>).


P.S. Since when is lguest 64-bit? Did I miss something?

H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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