[Qemu-devel] q35: usb keyboard trouble

[Gabriel L. Somlo]

Jason,

Commit d8b0dbdba325773469733222a167b54aca74de55 in the q35 tree breaks
'-usbdevice keyboard' for me. Instead of being able to type at the VM,
none of the keypresses make it through, and qemu stderr soon starts
logging this error: "usb-kbd: warning: key event queue full".

Specifically, it's the introduction of ich9-usb-ehci1 that causes the
issue (in hw/pc_q35.c, line 197):

+        pci_create_simple_multifunction(
+            host_bus, PCI_DEVFN(ICH9_USB_DEV, ICH9_USB_EHCI1_FUNC),
+            true, "ich9-usb-ehci1");

Commenting out the above makes the problem go away.

Thanks much,
--Gabriel