From 5692399f0af2b48b164b3c0b5c4c532b186b33ae Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 11 Jul 2014 09:44:26 +0200 Subject: backends: Introduce chr-testdev From: Paolo Bonzini chr-testdev enables a virtio serial channel to be used for guest initiated qemu exits. hw/misc/debugexit already enables guest initiated qemu exits, but only for PC targets. chr-testdev supports any virtio-capable target. kvm-unit-tests/arm is already making use of this backend. Currently there is a single command implemented, "q". It takes a (prefix) argument for the exit code, thus an exit is implemented by writing, e.g. "1q", to the virtio-serial port. It can be used as: $QEMU ... \ -device virtio-serial-device \ -device virtserialport,chardev=ctd -chardev testdev,id=ctd or, use: $QEMU ... \ -device virtio-serial-device \ -device virtconsole,chardev=ctd -chardev testdev,id=ctd to bind it to virtio-serial port0. Signed-off-by: Paolo Bonzini Signed-off-by: Andrew Jones Signed-off-by: Paolo Bonzini --- qapi-schema.json | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'qapi-schema.json') diff --git a/qapi-schema.json b/qapi-schema.json index b11aad2068..341f417a5f 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -2749,7 +2749,7 @@ # # Configuration info for the new chardev backend. # -# Since: 1.4 +# Since: 1.4 (testdev since 2.2) ## { 'type': 'ChardevDummy', 'data': { } } @@ -2764,6 +2764,7 @@ 'mux' : 'ChardevMux', 'msmouse': 'ChardevDummy', 'braille': 'ChardevDummy', + 'testdev': 'ChardevDummy', 'stdio' : 'ChardevStdio', 'console': 'ChardevDummy', 'spicevmc' : 'ChardevSpiceChannel', -- cgit v1.2.3-55-g7522