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[Rob <1045027@xxxxxxxxxxxxxxxxxx>]

This bug still exists in 12.04.4

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Title:
  [regression] iPXE kills kvm with KVM: entry failed, hardware error
  0x80000021

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Quantal:
  Fix Released

Bug description:
  This is a regression - I was using iPXE last night just fine on the
  same hardware (an i7-860)

  I've got a guest (xml attached) with no discs that I'm trying to
  netboot, but as soon as iPXE starts I see:

  iPXE (PCI 00:03.0) starting execution...

  and it stops - the libvirt log shows:

  
  KVM: entry failed, hardware error 0x80000021

  If you're running a guest on an Intel machine without unrestricted mode
  support, the failure can be most likely due to the guest entering an invalid
  state for Intel VT. For example, the guest maybe running in big real mode
  which is not supported on less recent Intel processors.

  EAX=00000011 EBX=00000000 ECX=00000030 EDX=00007baa
  ESI=e007f50a EDI=0003b890 EBP=00000000 ESP=00007baa
  EIP=00000382 EFL=00010006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
  ES =0030 0009c6f0 ffffffff 0000f300 DPL=3 DS16 [-WA]
  CS =9be4 0009be40 0000ffff 00009b00 DPL=0 CS16 [-RA]
  SS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
  DS =0030 0009c6f0 ffffffff 0000f300 DPL=3 DS16 [-WA]
  FS =0030 0009c6f0 ffffffff 0000f300 DPL=3 DS16 [-WA]
  GS =0030 0009c6f0 ffffffff 0000f300 DPL=3 DS16 [-WA]
  LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
  TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
  GDT=     0009c730 00000037
  IDT=     00000000 0000ffff
  CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
  DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
  DR6=00000000ffff0ff0 DR7=0000000000000400
  EFER=0000000000000000
  Code=66 0f 01 16 40 00 66 0f 01 1e 78 00 0f 20 c0 0c 01 0f 22 c0 <66> ea a4 00 00 00 08 00 0f 20 c0 24 fe 0f 22 c0 ff 2e 7
  e 00 2e a1 08 08 8e d8 8e c0 8e e0

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: qemu-kvm 1.1~rc+dfsg-1ubuntu10
  ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
  Uname: Linux 3.5.0-13-generic x86_64
  ApportVersion: 2.5.1-0ubuntu4
  Architecture: amd64
  Date: Sun Sep  2 17:09:41 2012
  InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120717)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=711860b7-f028-46b1-83bb-c2be5dc8044d ro nointremap quiet splash vt.handoff=7
  SourcePackage: qemu-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/10/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.50
  dmi.board.name: P55M Pro
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd09/10/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnP55MPro:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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