UHCI Host Controller no longer present with -usb

[Jamie Strandboge]

If on an up to date 12.04 install and I start a VM with:
$ qemu -m 192 -serial none -chardev null,id=chardevmon -pidfile /tmp/pid -daemonize -nographic -monitor tcp:127.0.0.1:4444,server,nowait -net user,hostfwd=tcp:127.0.0.1:4422-:22 -usb -rtc base=utc -name qatest-vm -uuid ded3a46b-bb60-43f4-8113-d041aeb93cdf -hda libvirt/qatest/qatest.qcow2

Then use the 'info usbhost' in the monitor, I get:
$ echo 'info usbhost' | nc -q 1 127.0.0.1 4444
(qemu) info usbhost
husb: using sys file-system with /dev/bus/usb
$

In Oneiric and eariler, 'info usbhost' would show a UHCI Host Controller. Eg:
$ qemu -m 192 -serial none -chardev null,id=chardevmon -pidfile /tmp/pid -daemonize -nographic -monitor tcp:127.0.0.1:4444,server,nowait -net user,hostfwd=tcp:127.0.0.1:4422-:22 -usb -rtc base=utc -name qatest-vm -uuid ded3a46b-bb60-43f4-8113-d041aeb93cdf -hda libvirt/qatest/qatest.qcow2
$ echo 'info usbhost' | nc -q 1 127.0.0.1 4444
QEMU 0.14.1 monitor - type 'help' for more information
(qemu) info usbhost
husb: using sys file-system with /dev/bus/usb
  Device 1.1, speed 12 Mb/s
    Hub: USB device 1d6b:0001, UHCI Host Controller

This breaks QRT/scripts/test-qemu.py and appears to be a regression, but I am not sure if it is a 3.2 kernel issue or a 0.14.1 vs 0.15 issue. I should mention this is happening with qemu without /dev/kvm available (ie, I am running test-qemu.py in an up to date precise VM).

[Serge Hallyn (serge-hallyn)]

hm, i couldn't reproduce this with 0.15.0+noroms-0ubuntu2 on top of 3.2.0-1-generic

[Serge Hallyn (serge-hallyn)]

also couldn't reproduce it after an upgrade just now.

[Jamie Strandboge (jdstrand)]

I did a dist-upgrade and this is still reproducible:
$ uname -a
Linux sec-precise-i386 3.2.0-2-generic #5-Ubuntu SMP Mon Nov 28 18:09:32 UTC 2011 i686 i686 i386 GNU/Linux
$ dpkg -l | grep qemu
ii qemu-common 0.15.0+noroms-0ubuntu6 qemu common functionality (bios, documentation, etc)
ii qemu-kvm 0.15.0+noroms-0ubuntu6 Full virtualization on i386 and amd64 hardware
ii qemu-utils 0.15.0+noroms-0ubuntu6 qemu utilities

My testing is: my amd64 Oneiric kvm laptop boots an i386 12.04 non-kvm guest which boots a minimal install i386 6.06 image. All of this is verified to work when booting an i386 11.10 non-kvm guest (which boots the same 6.06 image).

[Serge Hallyn (serge-hallyn)]

oh, sorry, i'll try without kvm.

[Serge Hallyn (serge-hallyn)]

Ok, I see now - other usb devices are there, but not the EHCI or UHCI controller.

[Serge Hallyn (serge-hallyn)]

there have been quite a few changes upstream to the usb code. I'm building latest qemu-kvm to test with.

[Serge Hallyn (serge-hallyn)]

Latest qemu-kvm from upstream has the same problem.

[Serge Hallyn (serge-hallyn)]

Reproduced with today's qemu git head as well.

[Thomas Huth (th-huth)]

Looking through old bug tickets... is this still an issue with the latest version of QEMU, or could we close this ticket nowadays?

[Launchpad Janitor (janitor)]

[Expired for qemu-kvm (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for qemu-kvm (Ubuntu Precise) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for QEMU because there has been no activity for 60 days.]