diff options
| author | Anton Nefedov <anton.nefedov@virtuozzo.com> | 2017-07-06 15:08:58 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-07-14 11:04:34 +0200 |
| commit | af50855c251bd08e90fd915a2d58c870df0a78e5 (patch) | |
| tree | 85aa48f8185759ccd86fb4e68a5243f0e94b13c2 | |
| parent | 75b601602be0462acb4e0298e738df86b1de61a1 (diff) | |
virtio-console: chardev hotswap support
In case of a backend change, the handler functions and the watch have
to be reset.
Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1499342940-56739-12-git-send-email-anton.nefedov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/char/virtio-console.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/hw/char/virtio-console.c b/hw/char/virtio-console.c index 4d3967c3bf..198b2a89c0 100644 --- a/hw/char/virtio-console.c +++ b/hw/char/virtio-console.c @@ -163,6 +163,30 @@ static void chr_event(void *opaque, int event) } } +static int chr_be_change(void *opaque) +{ + VirtConsole *vcon = opaque; + VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(vcon); + VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(port); + + if (k->is_console) { + qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read, + NULL, chr_be_change, vcon, NULL, true); + } else { + qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read, + chr_event, chr_be_change, vcon, NULL, false); + } + + if (vcon->watch) { + g_source_remove(vcon->watch); + vcon->watch = qemu_chr_fe_add_watch(&vcon->chr, + G_IO_OUT | G_IO_HUP, + chr_write_unblocked, vcon); + } + + return 0; +} + static void virtconsole_realize(DeviceState *dev, Error **errp) { VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev); @@ -187,11 +211,13 @@ static void virtconsole_realize(DeviceState *dev, Error **errp) */ if (k->is_console) { qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read, - NULL, NULL, vcon, NULL, true); + NULL, chr_be_change, + vcon, NULL, true); virtio_serial_open(port); } else { qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read, - chr_event, NULL, vcon, NULL, false); + chr_event, chr_be_change, + vcon, NULL, false); } } } |