On Tue, Dec 13, 2016 at 12:29 PM, Paolo Bonzini <pbonzini@redhat.com> wrote:

On 12/12/2016 15:06, Sandro Bonazzola wrote:
>
> Hello,
> where to find details about this info?
> I ask because on my tests in a nested environment with 4.1 beta on
> CentOS 7.2 + CR (that should match upcoming 7.3) I was not able to
> power on the SHE VM using qemu-kvm-ev-2.6.0-27.1.el7.x86_64.rpm
> manually downloaded
> by http://buildlogs.centos.org/centos/7/virt/x86_64/kvm-common
> <http://buildlogs.centos.org/centos/7/virt/x86_64/kvm-common>
>
> Got error
> warning: host doesn't support requested feature: CPUID.07H:EBX.erms
> [bit 9]
>
>
> Michal, Paolo, what about above error?

It's harmless. I would first of all check if L0 has the bit (you can do
it with cat /proc/cpuinfo on a live Linux CD). If it does, tell VMWare
to fix it. If it bugs you, you can force the bit to 1 in ESX, even if
L0 doesn't have it.

Paolo

Hello,

thanks for answering.

On an identical nuc where I have instead oVirt 4.0.5 directly installed on L0 host with CentOS 7.2 I get:

[g.cecchi@ovirt01 ~]$ cat /proc/cpuinfo

processor : 0

vendor_id : GenuineIntel

cpu family : 6

model : 78

model name : Intel(R) Core(TM) i5-6260U CPU @ 1.80GHz

stepping : 3

microcode : 0x8a

cpu MHz : 2740.570

cache size : 4096 KB

physical id : 0

siblings : 4

core id : 0

cpu cores : 2

apicid : 0

initial apicid : 0

fpu : yes

fpu_exception : yes

cpuid level : 22

wp : yes

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 nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves

bogomips : 3600.06

clflush size : 64

cache_alignment : 64

address sizes : 39 bits physical, 48 bits virtual

power management:

. . .

What is the flag to check?

Even if harmless, it seems that qemu-2.6 doesn't boot the self hosted engine VM, because it remains somehow inside a sort of bios window, while qemu-2.3 boots it without any problem and able to configure hosted engine...

Gianluca