Re: [libvirt-users] Way to detect virtual machine cpu features
Hi,
Am 2017-07-04 03:08, schrieb Lei Zhang:
Hi, any comment or suggestion
On Thu, Jun 29, 2017 at 10:55 AM, Lei Zhang <lei12zhang12(a)gmail.com>
wrote:
> Hello everyone
>
> I want to know how can I use libvirt to detect what cpu features a
> virtual machine will see.
>
> I guess I could do it in following way:
>
> 1. if cpu mode is 'custom', use 'virsh cpu-baseline --features' on
> the cpu model to get model features.
> 2. if cpu mode is 'host-passthrough' or 'host-model', do a
'virsh
> capabilities' to list cpu features of physical host, they are
> identical to features of virtual machine.
>
> Is this right way to do things? Look forward to your valuable
> comments.
>
> Best regards,
> Lei
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why dont u fire up on 'host' & 'vm' lscpu?
lscpu in vm on our server:
# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 2
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 60
Model name: Intel Core Processor (Haswell)
Stepping: 4
CPU MHz: 3595.608
BogoMIPS: 7191.21
Hypervisor vendor: KVM
<========================================================================================
Inside a VM !!!
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
L3 cache: 16384K
NUMA node0 CPU(s): 0,1
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm
constant_tsc rep_good nopl xtopology pni pclmulqdq ssse3 fma cx16 pcid
sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c
rdrand hypervisor lahf_lm abm fsgsbase bmi1 hle avx2 smep bmi2 erms
invpcid rtm xsaveopt arat
and there u see the cpu features.......
is this what u you want to see?
marko