Avi Kivity wrote: > Dong, Eddie wrote: >> Jan Kiszka wrote: >> >>> So if you want the higher performance of PCIe you need >>> performance-killing wbindv (not to speak of latency)? That sounds a >>> bit contradictory to me. So this is also true for native PCIe usage? >>> >>> >> >> Mmm, I won't say so. When you want to get RT performance, you >> won't use unknown OS such as Windows. If you use your RT >> linux, the OS (guest) itself should not use wbinvd. >> >> > > Well, virtualization lets you use an unknown OS without fear of > compromising host security, so a real-time capable hypervisor (which > kvm is, or very nearly) should be able to let you use an unknown > OS without > fear of compromising real-time response times. Right now the only > unresolvable issue I see is wbinvd. > Got it, I was mis-understood the problem! Eddie
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