[Xen-devel] CPU microcode update under xen

[Stephan Seitz <stse+xen@xxxxxxxxxxxxxxxxxxx>]

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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