[Qemu-devel] [Bug 1387881] Re: qemu fails to recognize full virtualization

[Iggy]

Nested on Intel should be much improved in newer kernel versions
(especially with regard to nested ept as the original report seems to
indicate is in use.

So if the original emulation failure is reproducible, I'd suggest
testing on a newer kernel.

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https://bugs.launchpad.net/bugs/1387881

Title:
  qemu fails to recognize full virtualization

Status in QEMU:
  New
Status in “linux” package in Ubuntu:
  Invalid
Status in “qemu” package in Ubuntu:
  New
Status in “virtinst” package in Ubuntu:
  New

Bug description:
  System:

  14.04
  qemu - 2.0.0+dfsg-2ubuntu1.6
  virtinst 0.600.4-3ubuntu2

  Command:

  virt-install --name juju-bootstrap --ram=2048 --vcpus=1  --hvm \
  --virt-type=kvm --pxe --boot network,hd --os-variant=ubuntutrusty \
  --graphics vnc --noautoconsole --os-type=linux --accelerate \
  
--disk=/var/lib/libvirt/images/juju-bootstrap.qcow2,bus=virtio,format=qcow2,cache=none,sparse=true,size=20
 \
  --network=bridge=br0,model=virtio

  Error:

  ERROR Host does not support virtualization type 'hvm'

  Diagnostics:

  $ sudo kvm -vnc :1 -monitor stdio
  [sudo] password for cscloud: 
  QEMU 2.0.0 monitor - type 'help' for more information
  (qemu) KVM internal error. Suberror: 1
  emulation failure
  EAX=00000000 EBX=40010000 ECX=00000030 EDX=00000cfd
  ESI=00000000 EDI=00000000 EBP=00000000 ESP=00006fcc
  EIP=0fedb30c EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
  ES =0010 00000000 ffffffff 00409300 DPL=0 DS   [-WA]
  CS =0008 00000000 ffffffff 00c09a00 DPL=0 CS32 [-R-]
  SS =0010 00000000 ffffffff 00409200 DPL=0 DS   [-W-]
  DS =0010 00000000 ffffffff 00409300 DPL=0 DS   [-WA]
  FS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
  GS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
  LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
  TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
  GDT=     000f6688 00000037
  IDT=     000f66c6 00000000
  CR0=60000011 CR2=00000000 CR3=00000000 CR4=00000000
  DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 
DR3=0000000000000000 
  DR6=00000000ffff0ff0 DR7=0000000000000400
  EFER=0000000000000000
  Code=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  info kvm
  kvm support: enabled
  (qemu) 

  
  > lsmod|grep kvm
  kvm_intel             143109  0 
  kvm                   451552  1 kvm_intel

  
  $ dmesg|grep -i kvm
  [    5.722167] kvm: Nested Virtualization enabled
  [    5.722190] kvm: Nested Paging enabled

  ---

  I haven't been able to get much out of libvirt as the kvm instance
  never starts.

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