[Qemu-devel] [Bug 688085] Re: Guest kernel hang during boot when KVM is active on i386 host

[Adolfo Jayme]

(Untargetting end-of-life release)

** No longer affects: kvm (Ubuntu Maverick)

** No longer affects: linux (Ubuntu Maverick)

** No longer affects: qemu (Ubuntu Maverick)

** No longer affects: qemu-kvm (Ubuntu Maverick)

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https://bugs.launchpad.net/bugs/688085

Title:
  Guest kernel hang during boot when KVM is active on i386 host

Status in meego project:
  Fix Released
Status in QEMU:
  Fix Released
Status in qemu-kvm:
  Fix Released
Status in “kvm” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released
Status in “qemu” package in Ubuntu:
  Invalid
Status in “qemu-kvm” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: qemu

  Guest kernel hang during boot when KVM is active on i386 host

  See the patch.
  http://www.spinics.net/lists/kvm/msg40800.html

  How to reproduce:
  1. install Maversick x86 (not amd64)
  2. ensure you have  kvm support in processor
  3. kvm -kernel /boot/initrd.img-2.6.35-24-generic-pae
  4. kvm -no-kvm -kernel /boot/initrd.img-2.6.35-24-generic-pae works OK.

  SRU Justification:
  Impact: Users cannot boot KVM guests on i386 hosts
  2. How bug addressed:  The upstream commit at 
http://www.spinics.net/lists/kvm/msg40800.html fixed it
  3. Patch:  A kernel patch is attached to this bug.
  4. Reproduce: boot an i386 kernel on a kvm-capable host.  Try to boot a kvm 
guest.
  5. Regression potential: since this is cherrypicking a commit from a future 
upstream which had already been changed, regression is possible.  However if 
there is a regression, it should only affect users of KVM on i386 hosts, which 
currently fail anyway.

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