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Description of problem:
usb device passthrough fails with hostdevice option
Version-Release number of selected component (if applicable):
Host:
4.18.0-232.el8.x86_64
qemu-kvm-5.1.0-3.module+el8.3.0+7708+740a1315.x86_64
libusbx-1.0.23-3.el8.x86_64
Guest:
4.18.0-232.el8.x86_64
How reproducible:
100%
Steps to Reproduce:
1.Check host usb devices:
# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 5: Dev 9, If 0, Class=Mass Storage, Driver=usbfs, 480M
|__ Port 14: Dev 6, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 7, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 4: Dev 8, If 0, Class=Hub, Driver=hub/4p, 480M
# /usr/libexec/qemu-kvm -device usb-host,?
usb-host options:
...
hostdevice=<str>
...
2.Boot VM with passthroughed usb device using hostdevice option:
/usr/libexec/qemu-kvm \
......
-device pcie-root-port,id=pcie-root-port-1,port=0x1,addr=0x1.0x1,bus=pcie.0,chassis=2 \
-device qemu-xhci,id=usbtest,bus=pcie-root-port-1,addr=0x0 \
-device usb-tablet,id=usb-tablet1,bus=usbtest.0,port=1 \
-device usb-host,hostdevice=/dev/bus/usb/001/009,id=usbhost,bus=usbtest.0,port=2 \
......
3.Check the usb device in guest:
# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
# fdisk -l
Actual results:
Can not find the passthroughed usb device in guest.
Expected results:
usb passthrough should succeed with hostdevice option.
Additional info:
Bulk update: Move RHEL-AV bugs to RHEL9. If necessary to resolve in RHEL8, then clone to the current RHEL8 release.
Comment 14RHEL Program Management
2022-02-21 07:27:23 UTC
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Description of problem: usb device passthrough fails with hostdevice option Version-Release number of selected component (if applicable): Host: 4.18.0-232.el8.x86_64 qemu-kvm-5.1.0-3.module+el8.3.0+7708+740a1315.x86_64 libusbx-1.0.23-3.el8.x86_64 Guest: 4.18.0-232.el8.x86_64 How reproducible: 100% Steps to Reproduce: 1.Check host usb devices: # lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M |__ Port 5: Dev 9, If 0, Class=Mass Storage, Driver=usbfs, 480M |__ Port 14: Dev 6, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 1: Dev 7, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 4: Dev 8, If 0, Class=Hub, Driver=hub/4p, 480M # /usr/libexec/qemu-kvm -device usb-host,? usb-host options: ... hostdevice=<str> ... 2.Boot VM with passthroughed usb device using hostdevice option: /usr/libexec/qemu-kvm \ ...... -device pcie-root-port,id=pcie-root-port-1,port=0x1,addr=0x1.0x1,bus=pcie.0,chassis=2 \ -device qemu-xhci,id=usbtest,bus=pcie-root-port-1,addr=0x0 \ -device usb-tablet,id=usb-tablet1,bus=usbtest.0,port=1 \ -device usb-host,hostdevice=/dev/bus/usb/001/009,id=usbhost,bus=usbtest.0,port=2 \ ...... 3.Check the usb device in guest: # lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub # fdisk -l Actual results: Can not find the passthroughed usb device in guest. Expected results: usb passthrough should succeed with hostdevice option. Additional info: