• Rusty Russell's avatar
    Lguest support for Virtio · 19f1537b
    Rusty Russell authored
    This makes lguest able to use the virtio devices.
    
    We change the device descriptor page from a simple array to a variable
    length "type, config_len, status, config data..." format, and
    implement virtio_config_ops to read from that config data.
    
    We use the virtio ring implementation for an efficient Guest <-> Host
    virtqueue mechanism, and the new LHCALL_NOTIFY hypercall to kick the
    host when it changes.
    
    We also use LHCALL_NOTIFY on kernel addresses for very very early
    console output.  We could have another hypercall, but this hack works
    quite well.
    Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
    19f1537b
Makefile 786 Bytes