Re: regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y

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On 05/07/13 18:55, Jun'ichi Nomura wrote:
> With v3.9 kernel and Nehalem CPU (i.e. unrestricted_guest=N),
> a guest stuck during boot (seemingly in BIOS).
> When setting emulate_invalid_guest_state=0, it does boot.
> (With v3.8 kernel and older, the guest used to boot fine by default.)
> 
> The userspace is qemu-kvm of RHEL6.
> It seems the guest boots up fine with upstream qemu 1.4.1.
> 
> Is this a kernel bug? Or is the userspace just too old to run on v3.9?

With the following patches on top of v3.9, the problem goes away.
Thank you!

  Gleb Natapov (1):
      KVM: VMX: fix halt emulation while emulating invalid guest sate

  Paolo Bonzini (3):
      KVM: emulator: emulate AAM
      KVM: emulator: emulate XLAT
      KVM: emulator: emulate SALC

-- 
Jun'ichi Nomura, NEC Corporation

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