"hpet" support - High Precision Event Timer spec

asked 2019-09-13 18:27:06 -0500

jamesopst gravatar image

hi all, i have a few questions regarding the hpet spec here:
https://specs.openstack.org/openstack...

from what I gather from that page the hpet can now be enabled for hypervisor_type=qemu instances. but I can't tell if before this that it could already be enabled for the hypervisor_type=kvm instances. or if it is not supported for kvm instances yet

Also, is this HPET a pci passthrough device or emulated? It reads that it is emulated. Is there a pci passthrough HPET available on openstack?

I have this extra spec set on a Stein environment and I have been trying it out, and I don't see "timer name='hpet' present='yes'" in the libvirt XML unless the hypervisor_type=kvm is set! i am confused.

I am assuming hypervisor_type=kvm/qemu is determined from /etc/nova/nova.conf:
virt_type=kvm

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Comments

in the hpet spec linked to in the question what config setting is it referring to when it says "would only be guaranteed to be valid in combination with hypervisor_type=qemu"?

jamesopst gravatar imagejamesopst ( 2019-09-19 16:51:13 -0500 )edit