On Tue, May 11, 2021, Marcelo Tosatti wrote: > > The KVM_REQ_UNBLOCK patch will resume execution even any such event > > even without any such event > > > occuring. So the behaviour would be different from baremetal. I agree with Marcelo, we don't want to spuriously unhalt the vCPU. It's legal, albeit risky, to do something like hlt /* #UD to triple fault if this CPU is awakened. */ ud2 when offlining a CPU, in which case the spurious wake event will crash the guest.
