<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">On November 19, 2015 at 00:55:41, Gerd Hoffmann (<a href="mailto:kraxel@redhat.com">kraxel@redhat.com</a>) wrote:</div> <div><blockquote type="cite" class="clean_bq" style="font-family: Helvetica, Arial; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div><div></div><div>This patch adds support for reading input events directly from linux evdev devices and forward them to the guest. Unlike virtio-input-host which simply passes on all events to the guest without looking at them this will interpret the events and feed them into the qemu input subsystem. Therefore this is limited to what the qemu input subsystem and the emulated input devices are able to handle. Also there is no support for absolute coordinates (tablet/touchscreen). So we are talking here about basic mouse and keyboard support. The advantage is that it'll work without virtio-input drivers in the guest, the events are delivered to the usual ps/2 or usb input devices (depending on what the machine happens to have). And for keyboards qemu is able to switch the keyboard between guest and host on hotkey. The hotkey is hard-coded for now (both control keys), initialy the guest owns the keyboard. Probably most useful when assigning vga devices with vfio and using a physical monitor instead of vnc/spice/gtk as guest display. Usage: Add '-input-linux /dev/input/event<nr>' to the qemu command line. Note that udev has rules which populate /dev/input/by-{id,path} with static names, which might be more convinient to use. </div></div></blockquote></div> Hi Gerd,Fantastic update, I just compiled and tried out this patch. It’s working alright, like you said initially the keyboard and mouse are owned by the guest. I didn’t felt any lag or so. Still testing though. However I cannot switch the keyboard and mouse back to the host while the guest is still running. What is the hotkey? Is it pressing both Ctrl keys together at the same time? Since I’ve already done that but nothing happens, both my keyboard and my mouse are still owned by the guest.I was testing using the USB mouse and keyboard usually intended for the guest, and aside from switching back to the host, I think there is no issue. Currently my setup are 2 mouses (USB and PS/2) and 2 keyboards (both USB). Where I could find the PS/2 event device? This is my additional QEMU script lines:# Input passthroughOPTS="$OPTS -input-linux /dev/input/by-id/usb-Logitech_Gaming_Mouse_G502_1192346A3437-event-mouse"OPTS="$OPTS -input-linux /dev/input/by-id/usb-04d9_USB_Keyboard-event-kbd” This is the contents of my /dev/input/by-idokky@freyja:~[09:35 PM] $ ls -l /dev/input/by-id/total 0lrwxrwxrwx 1 root root 10 Nov 19 21:15 usb-04d9_USB_Keyboard-event-if01 -> ../event20lrwxrwxrwx 1 root root 10 Nov 19 21:15 usb-04d9_USB_Keyboard-event-kbd -> ../event19lrwxrwxrwx 1 root root 10 Nov 19 21:15 usb-Logitech_Gaming_Mouse_G502_1192346A3437-event-mouse -> ../event17lrwxrwxrwx 1 root root 10 Nov 19 21:15 usb-Logitech_Gaming_Mouse_G502_1192346A3437-if01-event-kbd -> ../event18lrwxrwxrwx 1 root root 9 Nov 19 21:15 usb-Logitech_Gaming_Mouse_G502_1192346A3437-mouse -> ../mouse1lrwxrwxrwx 1 root root 9 Nov 19 20:44 usb-Microsoft_Microsoft_Basic_Optical_Mouse_v2.0-event-mouse -> ../event4lrwxrwxrwx 1 root root 9 Nov 19 20:44 usb-Microsoft_Microsoft_Basic_Optical_Mouse_v2.0-mouse -> ../mouse0 Thank you.-- Okky Hendriansyah</body></html>