[libvirt] [BUG] Hyper-V Enlightenments are broken in 5.5.0+
Hi, when some Hyper-V enlightenments are added to the domain configuration, e.g. <features> ... <hyperv> .. <vpindex state='on'/> </hyperv> ... I'm observing the following: # virsh create /etc/libvirt/qemu/win2k16.xml error: Failed to create domain from /etc/libvirt/qemu/win2k16.xml error: unsupported configuration: host doesn't support hyperv 'vpindex' feature the feature is, of course, supported in KVM/QEMU. I've bisected the problem to the particular commit: commit 63acb7bfd56f117309e4fcaf438639d4d7bc7dcb Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jun 17 23:38:46 2019 +0200 qemu_process: Prefer generic qemuMonitorGetGuestCPU Any ideas? -- Vitaly
On Wed, Jul 24, 2019 at 18:48:38 +0200, Vitaly Kuznetsov wrote:
Hi,
when some Hyper-V enlightenments are added to the domain configuration, e.g.
<features> ... <hyperv> .. <vpindex state='on'/> </hyperv> ...
I'm observing the following:
# virsh create /etc/libvirt/qemu/win2k16.xml error: Failed to create domain from /etc/libvirt/qemu/win2k16.xml error: unsupported configuration: host doesn't support hyperv 'vpindex' feature
the feature is, of course, supported in KVM/QEMU.
I've bisected the problem to the particular commit:
commit 63acb7bfd56f117309e4fcaf438639d4d7bc7dcb Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jun 17 23:38:46 2019 +0200
qemu_process: Prefer generic qemuMonitorGetGuestCPU
Any ideas?
Is this with QEMU 4.0 (or older) or a current git, i.e., almost 4.1? Jirka
Jiri Denemark <jdenemar@redhat.com> writes:
On Wed, Jul 24, 2019 at 18:48:38 +0200, Vitaly Kuznetsov wrote:
Hi,
when some Hyper-V enlightenments are added to the domain configuration, e.g.
<features> ... <hyperv> .. <vpindex state='on'/> </hyperv> ...
I'm observing the following:
# virsh create /etc/libvirt/qemu/win2k16.xml error: Failed to create domain from /etc/libvirt/qemu/win2k16.xml error: unsupported configuration: host doesn't support hyperv 'vpindex' feature
the feature is, of course, supported in KVM/QEMU.
I've bisected the problem to the particular commit:
commit 63acb7bfd56f117309e4fcaf438639d4d7bc7dcb Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jun 17 23:38:46 2019 +0200
qemu_process: Prefer generic qemuMonitorGetGuestCPU
Any ideas?
Is this with QEMU 4.0 (or older) or a current git, i.e., almost 4.1?
QEMU-4.0 is definitely affected. -- Vitaly
On Thu, Jul 25, 2019 at 11:09:28 +0200, Vitaly Kuznetsov wrote:
Jiri Denemark <jdenemar@redhat.com> writes:
On Wed, Jul 24, 2019 at 18:48:38 +0200, Vitaly Kuznetsov wrote:
Hi,
when some Hyper-V enlightenments are added to the domain configuration, e.g.
<features> ... <hyperv> .. <vpindex state='on'/> </hyperv> ...
I'm observing the following:
# virsh create /etc/libvirt/qemu/win2k16.xml error: Failed to create domain from /etc/libvirt/qemu/win2k16.xml error: unsupported configuration: host doesn't support hyperv 'vpindex' feature
the feature is, of course, supported in KVM/QEMU.
I've bisected the problem to the particular commit:
commit 63acb7bfd56f117309e4fcaf438639d4d7bc7dcb Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jun 17 23:38:46 2019 +0200
qemu_process: Prefer generic qemuMonitorGetGuestCPU
Any ideas?
Is this with QEMU 4.0 (or older) or a current git, i.e., almost 4.1?
QEMU-4.0 is definitely affected.
Hmm, QEMU 4.0 does not support unavailable-features CPU property, which means the mentioned commit is a no-op. And I can't reproduce your issue in this case. However, QEMU 4.1.0-rc1 supports unavailable-features and I can reproduce the bug. Looks like something is wrong with the new way of checking for enabled CPU features. Jirka
Jiri Denemark <jdenemar@redhat.com> writes:
On Thu, Jul 25, 2019 at 11:09:28 +0200, Vitaly Kuznetsov wrote:
Jiri Denemark <jdenemar@redhat.com> writes:
On Wed, Jul 24, 2019 at 18:48:38 +0200, Vitaly Kuznetsov wrote:
Hi,
when some Hyper-V enlightenments are added to the domain configuration, e.g.
<features> ... <hyperv> .. <vpindex state='on'/> </hyperv> ...
I'm observing the following:
# virsh create /etc/libvirt/qemu/win2k16.xml error: Failed to create domain from /etc/libvirt/qemu/win2k16.xml error: unsupported configuration: host doesn't support hyperv 'vpindex' feature
the feature is, of course, supported in KVM/QEMU.
I've bisected the problem to the particular commit:
commit 63acb7bfd56f117309e4fcaf438639d4d7bc7dcb Author: Jiri Denemark <jdenemar@redhat.com> Date: Mon Jun 17 23:38:46 2019 +0200
qemu_process: Prefer generic qemuMonitorGetGuestCPU
Any ideas?
Is this with QEMU 4.0 (or older) or a current git, i.e., almost 4.1?
QEMU-4.0 is definitely affected.
Hmm, QEMU 4.0 does not support unavailable-features CPU property, which means the mentioned commit is a no-op. And I can't reproduce your issue in this case.
However, QEMU 4.1.0-rc1 supports unavailable-features and I can reproduce the bug. Looks like something is wrong with the new way of checking for enabled CPU features.
Sorry, was a bug in my testing. This was QEMU-4.1 from git indeed. -- Vitaly
participants (2)
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Jiri Denemark -
Vitaly Kuznetsov