Hi, Thanks for the "HA-IOV: Applying Hardware-assisted Techniques to IO Virtualization Framework" KVM Forum presentation about RISC-V UER for trapless doorbell register writes. I'm trying to understand the motivation for HA-IOV. Is the key point that UER is faster than IPI at waking up a target thread that is currently descheduled? If not, then I missed something and maybe you could explain the advantages of using UER? Thanks, Stefan
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