[rhos-list] RHEL6: Nested virtualization support for kvm_intel?

[Andrew Cathrow]

----- Original Message -----
> From: "Gilles Dubreuil" <gilles at redhat.com>
> To: rhos-list at redhat.com
> Sent: Monday, November 25, 2013 9:59:58 PM
> Subject: [rhos-list] RHEL6: Nested virtualization support for kvm_intel?
> 
> Hi,
> 
> Maybe I'm dreaming but I thought soon we'll able to go Inception level
> 3, well at least that's how I explain to my partner what we're doing.
> 
> I'm not sure if any previous OpenStack kernels did have the feature.
> But latest RHEL6.5 kernel seems not to support nested virtualization on
> kvm_intel kernel module.
> 
> I'm not 100% sure if CPU support is required besides normal vmx flag.
> But I can't see any flag advertising such feature or not while comparing
> Intel specs as well with my laptop where it works with Fedora.
> 
> If there is no specific CPU support needed then the blocker will be the
> module. In such case, do there is any road map for the feature?
> Didn't find much rhel6 support for it (google/BZ) either.

Not until RHEL 7, however it does work (but not supported) on AMD hardware.


> 
> Thanks
> Gilles
> 
> 
> # uname -a
> Linux host10.oslab.priv 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54
> EST 2013 x86_64 x86_64 x86_64 GNU/Linux
> # modinfo kvm_intel | grep -i nested
> # cat /proc/cpuinfo | grep name | uniq
> model name      : Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz
> # cat /proc/cpuinfo | grep flags | uniq
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
> syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good
> xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx
> smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt
> tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts
> dts tpr_shadow vnmi flexpriority ept vpid
> 
> 
> _______________________________________________
> rhos-list mailing list
> rhos-list at redhat.com
> https://www.redhat.com/mailman/listinfo/rhos-list
> 
> 
>