Re: cpu vmx migration issue
Hi,
So it seems we have a bug regarding the new vmx features when computing
baseline CPU model. But it seems it's not the only thing...
On Fri, May 24, 2024 at 01:20:32 +0800, d tbsky wrote:
Next test I add "vmx" feature to vm config(so it will look
lik RHEL
9.3 config). the xml are the same at both cpu. live migration failed
at both direction and error message are the same: "guest CPU doesn't
match specification: missing features:
vmx-apicv-register,vmx-apicv-vid,vmx-posted-intr". we can see these
features were disabled at running xml.
running xml below:
<cpu mode="custom" match="exact" check="full">
<model fallback="forbid">Haswell-noTSX-IBRS</model>
<vendor>Intel</vendor>
<topology sockets="1" dies="1" clusters="1"
cores="1" threads="1"/>
<maxphysaddr mode="passthrough" limit="39"/>
...
<feature policy="disable"
name="vmx-apicv-register"/>
<feature policy="disable" name="vmx-apicv-vid"/>
...
<feature policy="disable"
name="vmx-posted-intr"/>
...
</cpu>
Oh, are you saying that a domain with such active XML cannot be migrated
and you see these three features reported as missing? Could you please
provide debug logs from virtqemud (or libvirtd if you're running
monolithic daemon) from both sides of migration covering the failed
attempt? See https://libvirt.org/kbase/debuglogs.html for steps required
to enable debug logs.
Thanks,
Jirka