[Bug 1850751] Re: kvm flag is not exposed by default

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1850751

Title:
  kvm flag is not exposed by default

Status in QEMU:
  Expired

Bug description:
  Hi I found that the kvm flags is not exposed by default, but according
  to the source code, it should be exposed by default when the CPU Model
  is a X86CPU.

  we have to specifically add "kvm=on" in QEMU custom cpu args like this to 
make VMWare Timing and KVM-Clock work:
  <qemu:arg value='host,kvm=on,+invtsc,+hypervisor'/>

  Also the libvirt can't expose kvm because of this (libvirt assumes the
  kvm flag is exposed by default in QEMU, so only "kvm hidden = 'true'"
  can be used to disable the kvm expose flag.

  I'm using QEMU 4.1.0 and libvirt 20190803.

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