Re: [Xen-devel] CPU microcode update under xen

[Ben Guthro <ben@xxxxxxxxxx>]

This is not yet merged.

You'll need to look at the following branch from Konrad:
http://git.kernel.org/?p=linux/kernel/git/konrad/xen.git;a=shortlog;h=refs/heads/stable/misc

primarily, the following changesets:
23757fb5d6781bf945d21d1f5373aa71122cbea9
f6c958ff0d00ffbf1cdc8fcf2f2a82f06fbbb5f4



On Tue, Oct 16, 2012 at 1:27 PM, Stephan Seitz
<stse+xen@xxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi!
>
> System: Debian/testing with selfcompiled kernel 3.5.5 (same error with 3.4 or 
> 3.6)
> XEN: 4.1.3
>
> After booting the Dom0 I notice the following errors:
> [    2.939078] microcode: CPU0 sig=0x1067a, pf=0x1, revision=0xa07
> [    2.991998] microcode: CPU0 update to revision 0xa0b failed
> [    2.992035] microcode: CPU1 sig=0x1067a, pf=0x1, revision=0xa07
> [    2.995882] microcode: CPU1 update to revision 0xa0b failed
> [    2.995942] microcode: Microcode Update Driver: v2.00 
> <tigran@xxxxxxxxxxxxxxxxxxxx>, Peter Oruba
>
> If I boot the same kernel without the hypervisor the microcode update is 
> successful.
>
> stse@osgiliath:~$ zcat /proc/config.gz |grep MICROCODE
> CONFIG_MICROCODE=m
> CONFIG_MICROCODE_INTEL=y
> # CONFIG_MICROCODE_AMD is not set
> CONFIG_MICROCODE_OLD_INTERFACE=y
>
> From /proc/cpuinfo:
> Intel(R) Core(TM)2 Duo CPU     E8500  @ 3.16GHz
>
> Do I need another driver for microcode updates under XEN, or is it impossible 
> for now?
>
>         Stephan
>
> --
> | Stephan Seitz          E-Mail: stse@xxxxxxxxxxxxxxxxxxx |
> | Public Keys: http://fsing.rootsland.net/~stse/keys.html |
>
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>

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