Re: kvm-hint-dedicated requires host CPU passthrough?
On 20/05/20 19:13, Stefan Hajnoczi wrote:
Hi,
libvirt refuses to set KVM_HINTS_DEDICATED when the CPU model is not
host-passthrough.
Is there a reason for this limitation?
My understanding is that KVM_HINTS_DEDICATED means the vCPU is pinned to
a host CPU that is not shared with other tasks. Any KVM vCPU should be
able to support this feature, regardless of whether host-passthrough is
used or not.
Perhaps it's because KVM_HINTS_DEDICATED enables mwait passthrough, and
the details of mwait vary per CPU model?
Paolo
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