On 16/01/2018 00:24, Tsu-Hsiang K Cheng wrote: > > > Currently, I am using the Linux kernel 4.10.1. I was able to set up the > PCI device passthrough with VFIO. In my guest, I ran iperf to perform > the TCP stream test using my host network interface card. I did get the > posted interrupt notification events (PIN) but not the posted interrupt > wake up events (PIW), which are shown below. On my machine, I had 12 > cores of Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz and VT-d was enabled > through the BIOS. I am starting to wondering if my hardware does not > support the posted interrupt? It doesn't. Only Broadwell and newer machines (Xeon v4) support VT-d posted interrupts. Paolo Is there a way check such setting besides > from the BIOS. Thanks for helping. > > > PIN: 19 0 197 390 288 1525 > 0 0 0 0 0 16 > Posted-interrupt notification event > > PIW: 0 0 0 0 0 0 > 0 0 0 0 0 0 > Posted-interrupt wakeup event > >
