Red Hat Bugzilla – Bug 1270146
can't input character into guest without usb-kbd device
Last modified: 2015-10-12 03:43:37 EDT
Description of problem: can't input in guest without usb-kbd device Version-Release number of selected component (if applicable): Host: kernel-3.10.0-320.el7.ppc64le qemu-kvm-rhev-2.3.0-28.el7.ppc64le SLOF-20150313-5.gitc89b0df.el7.noarch Guest: RHEL7.2 BE RHEL-7.2-20151001.0 How reproducible: 100% Steps to Reproduce: 1.Start qemu-kvm with following command line: /usr/libexec/qemu-kvm -name RHEL-7.2_BE -machine pseries,accel=kvm,usb=off -m 8192 -realtime mlock=off -smp 8,sockets=2,cores=2,threads=2 \ -rtc base=localtime,clock=host,driftfix=slew \ -monitor stdio \ -boot menu=on \ -device usb-ehci,id=usb,bus=pci.0,addr=0x1 \ -drive file=/home/mazhang/rhel7.2-ppc.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=none,rerror=stop,werror=stop,aio=native \ -device virtio-blk-pci,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bus=pci.0,addr=0x3,bootindex=1 \ -vnc :0 -device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x5 \ -msg timestamp=on \ -netdev tap,id=hostnet0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:c4:e7:93,bus=pci.0,addr=0x6 \ -qmp tcp:0:4448,server,nowait \ -serial unix:/tmp/console0,server,nowait \ -S \ -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=0,bus=pci.0 \ -chardev socket,id=channel1,path=/tmp/helloworld1,server,nowait \ -device virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm0,bus=virtio-serial0.0,id=port1 \ -chardev socket,id=channel2,path=/tmp/helloworld2,server,nowait \ -device virtserialport,chardev=channel2,name=com.redhat.rhevm.vdsm1,bus=virtio-serial0.0,id=port2 \ Actual results: After guest boot up, can't input character into guest. Expected results: Can input characters. Additional info: 1. Append "-device usb-kbd" in command line, qemu-kvm works well. 2. Use the same command line on x86 platform(without usb-kbd) did not hit this problem.
> can't input in guest without usb-kbd device Well, you need a keyboard device to send key events to the guest ... We have usb-kbd and virtio-keyboard-pci, pick one. The virtio keyboard requires 7.2+ for both guest and host. > 2. Use the same command line on x86 platform(without usb-kbd) did not hit > this problem. x86 machines always have a ps/2 keyboard (and mouse too), so they have a keyboard device even if you don't explicitly add one. That isn't the case for ppc64(le) and aarch64.