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Re: [Qemu-discuss] ERROR unsupported configuration: guest and host CPU a

From: akhilesh rawat
Subject: Re: [Qemu-discuss] ERROR unsupported configuration: guest and host CPU are not
Date: Mon, 23 Jan 2017 14:36:21 +0530


To update this thread ,it looks the issue was with Virt-install not with KVM for supporting Cpu model.
As invoking the KVM commands directly there is no complain of CPU model.   Thanks for initial comment.


On Thu, Jan 12, 2017 at 4:39 PM, akhilesh rawat <address@hidden> wrote:
Hi ,

thanks for checking .

We i use below command
address@hidden qemu]# virt-install --virt-type kvm --name compute-2 --cpu Haswell-noTSX --ram=61440 --vcpus=20 --os-type=linux --os-variant=generic --disk compute2-disk0.qcow2,device=disk,bus=ide,size=300,sparse=true,format=qcow2 --pxe --network bridge=virbr0,model=e1000 --network bridge=virbr0,model=e1000 --network bridge=virbr0,model=virtio --network bridge=virbr0,model=virtio --graphics vnc,port=5906 --noautoconsole

So then point 1 is not relevant to my case .
point 3 is exactly i got and so i am using -noTsX  which have the error i raised .

Let me check on point 4 and see .

On Wed, Jan 11, 2017 at 10:25 PM, Jakob Bohm <address@hidden> wrote:
(top posting to keep thread consistent)

1. It looks like you are not invoking qemu directly (I don't think
  qemu uses the term 'domain' for a virtual machine).  Maybe your
  wrapper tool is refusing the request without even trying to pass
  it to qemu.  If that is the issue, you need to upgrade/fix that

2. kvm works by putting your hardware CPU into a mode which can
  execute a virtual machine directly.  Thus the ability of kvm to
  emulate instruction behaviors different from the hardware CPU is
  limited to cases where the hardware CPU can be told to call back to
  kvm whenever a virtual machine tries to execute that instruction
  and/or query the CPUID instruction for its availability.  In
  contrast the (slower) basic qemu emulator may be able to emulate
  almost anything you can describe to it, although not every desired
  combination of host and guest instruction may have been included in
  the qemu source tree.

3. The suggestion to use a "-noTSX" variant of Haswell may indicate
  that the hardware CPU is deliberately refusing to let emulators such
  as kvm fake some of Intel's "secure execution/measured execution"
  features.  But maybe the error message is just including an
  irrelevant suggestion for your situation.

4. Large parts of kvm resides in the Linux kernel, not in the
  qemu-kvm package.  Maybe the kernel part of kvm is too old.


lscpu provides less information than cat /proc/cpuinfo, but I think
there was enough information in this case.  For example, someone
who cares may be able to figure out if a Xeon(R) E5-2620 is a Haswell
or compatible chip.

On 11/01/2017 06:16, akhilesh rawat wrote:
ERROR    unsupported configuration: guest and host CPU are not compatible: Host CPU does not provide required features: fma, movbe, fsgsbase, bmi1, hle, avx2, smep, bmi2, erms, invpcid, rtm; try using 'Haswell-noTSX' CPU model
Domain installation does not appear to have been successful

On Wed, Jan 11, 2017 at 10:44 AM, akhilesh rawat <address@hidden <mailto:address@hidden.com>> wrote:

    Hi ,

     I want to create VM with CPU type HAswell however unable to do so
    due to this error

    I manged to update my KVM  emulator to 2.6 from 1.5 but still I
    see face same error. Can i get help if i QEMU support same on my
    host CPU Arch .

    address@hidden ~]# rpm -qa|grep qemu








    address@hidden ~]# /usr/libexec/qemu-kvm -cpu ?

    x86 qemu64  QEMU Virtual CPU version 2.5+

    x86 phenom  AMD Phenom(tm) 9550 Quad-Core Processor

    x86    core2duo  Intel(R) Core(TM)2 Duo CPU     T7700  @ 2.40GHz

    x86 kvm64  Common KVM processor

    x86 qemu32  QEMU Virtual CPU version 2.5+

    x86 kvm32  Common 32-bit KVM processor

    x86 coreduo  Genuine Intel(R) CPU           T2600  @ 2.16GHz

    x86 486

    x86 pentium

    x86 pentium2

    x86 pentium3

    x86 athlon  QEMU Virtual CPU version 2.5+

    x86 n270  Intel(R) Atom(TM) CPU N270   @ 1.60GHz

    x86 cpu64-rhel6  QEMU Virtual CPU version (cpu64-rhel6)

    x86 Conroe  Intel Celeron_4x0 (Conroe/Merom Class Core 2)

    x86 Penryn  Intel Core 2 Duo P9xxx (Penryn Class Core 2)

    x86 Nehalem  Intel Core i7 9xx (Nehalem Class Core i7)

    x86 Westmere  Westmere E56xx/L56xx/X56xx (Nehalem-C)

    x86 SandyBridge  Intel Xeon E312xx (Sandy Bridge)

    x86 IvyBridge  Intel Xeon E3-12xx v2 (Ivy Bridge)

    x86 Haswell-noTSX  Intel Core Processor (Haswell, no TSX)

    x86 Haswell  Intel Core Processor (Haswell)

    x86 Broadwell-noTSX  Intel Core Processor (Broadwell, no TSX)

    x86 Broadwell  Intel Core Processor (Broadwell)

    x86 Skylake-Client  Intel Core Processor (Skylake)

    x86 Opteron_G1 AMD Opteron 240 (Gen 1 Class Opteron)

    x86 Opteron_G2 AMD Opteron 22xx (Gen 2 Class Opteron)

    x86 Opteron_G3 AMD Opteron 23xx (Gen 3 Class Opteron)

    x86 Opteron_G4 AMD Opteron 62xx class CPU

    x86 Opteron_G5 AMD Opteron 63xx class CPU

    x86 host  KVM processor with all supported host features (only
    available in KVM mode)

    Recognized CPUID flags:

      fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
    pat pse36 pn clflush ds acpi mmx fxsr sse sse2 ss ht tm ia64 pbe

    pni|sse3 pclmulqdq|pclmuldq dtes64 monitor ds_cpl vmx smx est tm2
    ssse3 cid fma cx16 xtpr pdcm pcid dca sse4.1|sse4_1 sse4.2|sse4_2
    x2apic movbe popcnt tsc-deadline aes xsave osxsave avx f16c rdrand

    fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx
    avx512f avx512dq rdseed adx smap avx512ifma pcommit clflushopt
    clwb avx512pf avx512er avx512cd avx512bw avx512vl

    avx512vbmi pku ospke

    syscall nx|xd mmxext fxsr_opt|ffxsr pdpe1gb rdtscp lm|i64 3dnowext

    lahf_lm cmp_legacy svm extapic cr8legacy abm sse4a misalignsse
    3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm
    topoext perfctr_core perfctr_nb


    xstore xstore-en xcrypt xcrypt-en ace2 ace2-en phe phe-en pmm pmm-en

    kvmclock kvm_nopiodelay kvm_mmu kvmclock kvm_asyncpf
    kvm_steal_time kvm_pv_eoi kvm_pv_unhalt kvmclock-stable-bit

      npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
    decodeassists pause_filter pfthreshold

    xsaveopt xsavec xgetbv1 xsaves


    Br Aki

    HOST CPU Arch

    address@hidden ~]#

    address@hidden ~]# lscpu

    Architecture: x86_64

    CPU op-mode(s):        32-bit, 64-bit

    Byte Order:            Little Endian

    CPU(s): 24

    On-line CPU(s) list: 0-23

    Thread(s) per core:    2

    Core(s) per socket:    6

    Socket(s): 2

    NUMA node(s):          2

    Vendor ID: GenuineIntel

    CPU family:            6

    Model: 45

    Model name: Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz

    Stepping: 7

    CPU MHz: 1200.000

    BogoMIPS: 3995.05

    Virtualization: VT-x

    L1d cache: 32K

    L1i cache: 32K

    L2 cache: 256K

    L3 cache: 15360K

    NUMA node0 CPU(s):     0-5,12-17

    NUMA node1 CPU(s):     6-11,18-23


Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
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