Created attachment 1581259 [details] html format log Description of problem: Version-Release number of selected component (if applicable): kernel-4.18.0-80.4.1.el8_0.x86_64.rpm qemu-kvm-3.1.0-27.module+el8.0.1+3253+c5371cb3.x86_64 seabios-1.12.0-1.module+el8.0.1+2959+fecd1a40.x86_64 virtio-win-1.9.8-2.el8.iso -viostor virtio-win-prewhql-0.1-172.iso -netkvm How reproducible: 100% Steps to Reproduce: 1.boot guest with the following usb device(usb3.0),one usb controller,one usb hub and two usb storage. -device nec-usb-xhci,id=controller -device usb-hub,id=usbhub,bus=controller.0,port=1 \ -drive file=usb-disk-1.raw,if=none,id=drive-usb-1-0,media=disk,format=raw,cache=none,werror=stop,rerror=stop,aio=threads -device usb-storage,port=1.1,drive=drive-usb-1-0,id=usb-1-0,removable=on \ -drive file=usb-disk-2.raw,if=none,id=drive-usb-2-0,media=disk,format=raw,cache=none,werror=stop,rerror=stop,aio=threads -device usb-storage,port=1.2,drive=drive-usb-2-0,id=usb-2-0,removable=on \ 2.submit job "USB Exposed Port System Test" 3. Actual results: failed as the following error info. ***Failing Exposed Connector*** Failed to verify consistent USB 3.0 Port Mapping. USB 3.0 Hub must enumerate on each exposed connector. Expected results: pass. Additional info: 1 pass this job with "-device usb-ehci,id=controller,..."(usb2.0),as this job actually was skipped(and pass) when attach usb2.0 controller as this is a usb3.0 job. 2 qemu-kvm only emulate usb 1.1 hub. - PCI UHCI, OHCI, EHCI or XHCI USB controller and a virtual USB-1.1 hub
Created attachment 1581260 [details] all hlk logs
> Failed to verify consistent USB 3.0 Port Mapping. USB 3.0 Hub must enumerate > on each exposed connector. > 2 qemu-kvm only emulate usb 1.1 hub. > - PCI UHCI, OHCI, EHCI or XHCI USB controller and a virtual USB-1.1 hub USB-3 hubs are needed to pass this test, but qemu can only emulate an USB-1.1 hub. So there is no easy way to make this test pass. We could write a USB-3 hub emulation. That would be a non-trivial effort though.
Reopen this bz as now it blocks CNV SVVP certification. CNV use default USB3.0 controller and not allow to configure it. So now QE can not workaround it with USB2.0 controller. Either CNV allows configuration to USB2.0 or qemu should support a 3.0 USB hub. Otherwise this will block CNV release.
Rather than reopening some old bug, a new feature request should have been made referencing this bug. Given Gerd's feedback in Comment 3 and Comment 9, it does not seem a high priority for the upstream qemu community and there are currently no resources to work on a usb-3 hub. This would need to be planned for some future release and come thru PM channels.