* Re: KVM on Via Nano (Isaiah) CPUs?
@ 2009-04-01 20:04 Jesse Ahrens
2009-04-02 9:08 ` Oliver Rath
0 siblings, 1 reply; 6+ messages in thread
From: Jesse Ahrens @ 2009-04-01 20:04 UTC (permalink / raw)
To: kvm
> Via engineers have contacted me and confirmed that this is a problem in
> the processor.
I'd like to clarify. Stepping 2 Nano processors do not support VMX. This
should have been disabled by the BIOS. Support for VMX was not finished
until stepping 3. If you have a stepping 2 processor with this enabled
please let me know which platform it is on so we can have the
manufacturer release a new BIOS.
Jesse Ahrens
Systems Engineer
Centaur Technology
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: KVM on Via Nano (Isaiah) CPUs?
2009-04-01 20:04 KVM on Via Nano (Isaiah) CPUs? Jesse Ahrens
@ 2009-04-02 9:08 ` Oliver Rath
0 siblings, 0 replies; 6+ messages in thread
From: Oliver Rath @ 2009-04-02 9:08 UTC (permalink / raw)
To: jahrens; +Cc: kvm
Hi Jesse!
Jesse Ahrens schrieb:
> > Via engineers have contacted me and confirmed that this is a problem in
> > the processor.
>
> I'd like to clarify. Stepping 2 Nano processors do not support VMX.
> This should have been disabled by the BIOS. Support for VMX was not
> finished until stepping 3. If you have a stepping 2 processor with
> this enabled please let me know which platform it is on so we can have
> the manufacturer release a new BIOS.
What is the actual Stepping for Via Nano Processors? Is VT running fine
since stepping 3?
Regards
Oliver
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: KVM on Via Nano (Isaiah) CPUs?
2009-05-08 19:16 ` Craig Metz
@ 2009-05-09 9:32 ` Avi Kivity
0 siblings, 0 replies; 6+ messages in thread
From: Avi Kivity @ 2009-05-09 9:32 UTC (permalink / raw)
To: Craig Metz; +Cc: kvm, andreas.tanz
Craig Metz wrote:
> In message <49D396AB.6090304@redhat.com>, you write:
>
>> Via engineers have contacted me and confirmed that this is a problem in
>> the processor.
>>
>
> Is there a known-fixed CPU revision?
>
> Is there a way to identify working vs. non-working chips, either from IC
> stamp or from /proc/cpuinfo? (Bonus: is it possible to put a check and an error
> into the kvm-intel kernel model?)
>
I have no idea. Please contact Via for this information.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: KVM on Via Nano (Isaiah) CPUs?
2009-04-01 16:30 ` Avi Kivity
@ 2009-05-08 19:16 ` Craig Metz
2009-05-09 9:32 ` Avi Kivity
0 siblings, 1 reply; 6+ messages in thread
From: Craig Metz @ 2009-05-08 19:16 UTC (permalink / raw)
To: Avi Kivity; +Cc: kvm, andreas.tanz
In message <49D396AB.6090304@redhat.com>, you write:
>Via engineers have contacted me and confirmed that this is a problem in
>the processor.
Is there a known-fixed CPU revision?
Is there a way to identify working vs. non-working chips, either from IC
stamp or from /proc/cpuinfo? (Bonus: is it possible to put a check and an error
into the kvm-intel kernel model?)
Thanks,
-Craig
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: KVM on Via Nano (Isaiah) CPUs?
2009-02-16 13:45 Craig Metz
@ 2009-04-01 16:30 ` Avi Kivity
2009-05-08 19:16 ` Craig Metz
0 siblings, 1 reply; 6+ messages in thread
From: Avi Kivity @ 2009-04-01 16:30 UTC (permalink / raw)
To: Craig Metz; +Cc: kvm, andreas.tanz
Craig Metz wrote:
> Has anyone (esp. the KVM core developers) tried to determine whether KVM
> works on the new Via Nano CPUs? They claim to support the Intel-style VT-x
> instruction set extensions and show up in cpuinfo that way. But, according to
> some Google searching, folks who have tried to use KVM (or Hyper-V) have not
> been succesful. It's not clear if this is a CPU implementation problem and/or
> something that needs more work in KVM.
>
Via engineers have contacted me and confirmed that this is a problem in
the processor.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
^ permalink raw reply [flat|nested] 6+ messages in thread
* KVM on Via Nano (Isaiah) CPUs?
@ 2009-02-16 13:45 Craig Metz
2009-04-01 16:30 ` Avi Kivity
0 siblings, 1 reply; 6+ messages in thread
From: Craig Metz @ 2009-02-16 13:45 UTC (permalink / raw)
To: kvm
Has anyone (esp. the KVM core developers) tried to determine whether KVM
works on the new Via Nano CPUs? They claim to support the Intel-style VT-x
instruction set extensions and show up in cpuinfo that way. But, according to
some Google searching, folks who have tried to use KVM (or Hyper-V) have not
been succesful. It's not clear if this is a CPU implementation problem and/or
something that needs more work in KVM.
Has anyone tried this / debugged this?
Thanks,
-Craig
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-05-09 9:32 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2009-04-01 20:04 KVM on Via Nano (Isaiah) CPUs? Jesse Ahrens
2009-04-02 9:08 ` Oliver Rath
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2009-02-16 13:45 Craig Metz
2009-04-01 16:30 ` Avi Kivity
2009-05-08 19:16 ` Craig Metz
2009-05-09 9:32 ` Avi Kivity
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