Nested Virtualization Under KVM Hypervisor

[Pete Wright]

On 9/12/20 11:30 PM, Peter Grehan wrote:
> Hi Pete,
>
>> Ah I see - once I realized we had a newer kernel I didn't focus too 
>> much on the first bug - here's the MSR's
>>
>>
>> MSR 0x480: 0x00981000 0x11e57ed0
>> MSR 0x482: 0xfff9fffe 0x0401e172
>> MSR 0x48b: 0x000003fb 0x00000000
>> MSR 0x48c: 0x00000f01 0x04114040
>
>  This looks very similar to comment 14 in the bug report
>      https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203994#c14
>
>  INS/OUTS isn't marked as supported, and single-context INVEPT is 
> missing. As mentioned in comment 17, these are simple to work around 
> but other issues started to show up, indicating that other problems 
> are at play.
>
>  Given kernel 4.15 looks like it could be from Ubuntu 16-LTS, I'd 
> recommend moving to 18-LTS if that is possible, since that kernel 
> version is known to work.
>
Thanks Peter for this feedback!  I'll relay this info back to my hosting 
provider.

Cheers,
-pete

-- 
Pete Wright
pete at nomadlogic.org
@nomadlogicLA