• Olaf Hering's avatar
    Input: xen-kbdfront - advertise either absolute or relative coordinates · 5ea5254a
    Olaf Hering authored
    commit 8c3c283e upstream.
    
    A virtualized display device is usually viewed with the vncviewer
    application, either by 'xm vnc domU' or with vncviewer localhost:port.
    vncviewer and the RFB protocol provides absolute coordinates to the
    virtual display. These coordinates are either passed through to a PV
    guest or converted to relative coordinates for a HVM guest.
    
    A PV guest receives these coordinates and passes them to the kernels
    evdev driver. There it can be picked up by applications such as the
    xorg-input drivers. Using absolute coordinates avoids issues such as
    guest mouse pointer not tracking host mouse pointer due to wrong mouse
    acceleration settings in the guests X display.
    
    Advertise either absolute or relative coordinates to the input system
    and the evdev driver, depending on what dom0 provides. The xorg-input
    driver prefers relative coordinates even if a devices provides both.
    Signed-off-by: default avatarOlaf Hering <olaf@aepfle.de>
    Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
    Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    5ea5254a
xen-kbdfront.c 8.71 KB