Greetings,
Will QEMU using TCG instead of KVM emulate CPU features that are missing on the
host processor? Specifically, will it emulate ESA/390 architecture on a z14 or
z15 with this config:
<cpu mode='custom' match='exact' check='none'>
<model fallback='allow'>z900.3</model>
</cpu>
for example?
I've already confirmed that config doesn't provide features from newer CPU
models but we don't have a z14/z15 so I can't confirm that it will emulate
older features on newer CPUs.
I know that performance will be worse (maybe much worse) with TCG instead of
KVM but I'm investigating this as a short-term solution for a specific use case.
Thanks...
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