* CPU microcode update under xen
@ 2012-10-16 17:27 Stephan Seitz
2012-10-16 17:54 ` Ben Guthro
0 siblings, 1 reply; 6+ messages in thread
From: Stephan Seitz @ 2012-10-16 17:27 UTC (permalink / raw)
To: xen-devel
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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@aivazian.fsnet.co.uk>, 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@fsing.rootsland.net |
| Public Keys: http://fsing.rootsland.net/~stse/keys.html |
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CPU microcode update under xen
2012-10-16 17:27 CPU microcode update under xen Stephan Seitz
@ 2012-10-16 17:54 ` Ben Guthro
2012-10-16 18:42 ` Ian Campbell
2012-10-17 20:06 ` Stephan Seitz
0 siblings, 2 replies; 6+ messages in thread
From: Ben Guthro @ 2012-10-16 17:54 UTC (permalink / raw)
To: Stephan Seitz; +Cc: Konrad Rzeszutek Wilk, xen-devel
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@fsing.rootsland.net> 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@aivazian.fsnet.co.uk>, 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@fsing.rootsland.net |
> | Public Keys: http://fsing.rootsland.net/~stse/keys.html |
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CPU microcode update under xen
2012-10-16 17:54 ` Ben Guthro
@ 2012-10-16 18:42 ` Ian Campbell
2012-10-17 7:04 ` Jan Beulich
2012-10-17 20:06 ` Stephan Seitz
1 sibling, 1 reply; 6+ messages in thread
From: Ian Campbell @ 2012-10-16 18:42 UTC (permalink / raw)
To: Ben Guthro; +Cc: Stephan Seitz, xen-devel, Konrad Rzeszutek Wilk
On Tue, 2012-10-16 at 18:54 +0100, Ben Guthro wrote:
> This is not yet merged.
Please try and avoid top posting...
> On Tue, Oct 16, 2012 at 1:27 PM, Stephan Seitz
> <stse+xen@fsing.rootsland.net> wrote:
[...]
> > Do I need another driver for microcode updates under XEN, or is it impossible for now?
There is also the option for Xen itself to load the microcode.
See the ucode option in
http://xenbits.xen.org/docs/4.2-testing/misc/xen-command-line.html
I think this is probably 4.2+ only though (not sure when it was added).
Ian.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CPU microcode update under xen
2012-10-16 18:42 ` Ian Campbell
@ 2012-10-17 7:04 ` Jan Beulich
0 siblings, 0 replies; 6+ messages in thread
From: Jan Beulich @ 2012-10-17 7:04 UTC (permalink / raw)
To: Ian Campbell, Ben Guthro; +Cc: Stephan Seitz, Konrad Rzeszutek Wilk, xen-devel
>>> On 16.10.12 at 20:42, Ian Campbell <Ian.Campbell@citrix.com> wrote:
>> On Tue, Oct 16, 2012 at 1:27 PM, Stephan Seitz
>> <stse+xen@fsing.rootsland.net> wrote:
> [...]
>> > Do I need another driver for microcode updates under XEN, or is it
> impossible for now?
>
> There is also the option for Xen itself to load the microcode.
>
> See the ucode option in
> http://xenbits.xen.org/docs/4.2-testing/misc/xen-command-line.html
>
> I think this is probably 4.2+ only though (not sure when it was added).
Yes, this is 4.2+ only.
Jan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CPU microcode update under xen
2012-10-16 17:54 ` Ben Guthro
2012-10-16 18:42 ` Ian Campbell
@ 2012-10-17 20:06 ` Stephan Seitz
2012-10-17 20:57 ` Konrad Rzeszutek Wilk
1 sibling, 1 reply; 6+ messages in thread
From: Stephan Seitz @ 2012-10-17 20:06 UTC (permalink / raw)
To: xen-devel; +Cc: Konrad Rzeszutek Wilk
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On Tue, Oct 16, 2012 at 01:54:59PM -0400, Ben Guthro wrote:
>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
Thanks for your answer.
>primarily, the following changesets:
>23757fb5d6781bf945d21d1f5373aa71122cbea9
>f6c958ff0d00ffbf1cdc8fcf2f2a82f06fbbb5f4
Those patches are about one year old. Any reasons why they are not merged
yet?
Stephan
--
| Stephan Seitz E-Mail: stse@fsing.rootsland.net |
| Public Keys: http://fsing.rootsland.net/~stse/keys.html |
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^ permalink raw reply [flat|nested] 6+ messages in thread
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2012-10-16 17:27 CPU microcode update under xen Stephan Seitz
2012-10-16 17:54 ` Ben Guthro
2012-10-16 18:42 ` Ian Campbell
2012-10-17 7:04 ` Jan Beulich
2012-10-17 20:06 ` Stephan Seitz
2012-10-17 20:57 ` Konrad Rzeszutek Wilk
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