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# Date Author Comment
e245795b 04/28/2010 04:58 pm Amit Shah

virtio-serial: save/load: Ensure target has enough ports

The target could be started with max_nr_ports for a virtio-serial device
lesser than what was available on the source machine. Fail the migration
in such a case.

Signed-off-by: Amit Shah <>...
295587f7 04/28/2010 04:58 pm Amit Shah

virtio-serial: save/load: Ensure nr_ports on src and dest are same.

The number of ports on the source as well as the destination machines
should match. If they don't, it means some ports that got hotplugged on
the source aren't instantiated on the destination. Or that ports that...
1ecda02b 03/16/2010 05:58 pm Markus Armbruster

error: Replace qemu_error() by error_report()

error_report() terminates the message with a newline. Strip it it
from its arguments.

This fixes a few error messages lacking a newline:
net_handle_fd_param()'s "No file descriptor named %s found", and
tap_open()'s "vnet_hdr=1 requested, but no kernel support for...
ee4d45be 02/19/2010 11:32 pm Michael S. Tsirkin

virtio-serial: don't set MULTIPORT for 1 port dev

Since commit 98b19252cf1bd97c54bc4613f3537c5ec0aae263, all
serial devices declare MULTIPORT feature.
To allow 0.12 compatibility, we should clear this when
max_nr_ports is 1.

Signed-off-by: Michael S. Tsirkin <>...
9ae84f0a 01/29/2010 05:53 pm Amit Shah

virtio-serial-bus: Fix bus initialisation and allow for bus identification

This commit enables one to use multiple virtio-serial devices and to
assign ports to arbitrary devices like this:

-device virtio-serial,id=foo -device virtio-serial,id=bar \
  -device virtserialport,bus=foo.0,name=foo \...
98b19252 01/20/2010 04:25 pm Amit Shah

virtio-console: qdev conversion, new virtio-serial-bus

This commit converts the virtio-console device to create a new
virtio-serial bus that can host console and generic serial ports. The
file hosting this code is now called virtio-serial-bus.c.

The virtio console is now a very simple qdev device that sits on the...
6663a195 01/20/2010 04:25 pm Amit Shah

virtio-serial-bus: Maintain guest and host port open/close state

Via control channel messages, the guest can tell us whether a port got
opened or closed. Similarly, we can also indicate to the guest of host
port open/close events.

Signed-off-by: Amit Shah <>...
160600fd 01/20/2010 04:25 pm Amit Shah

virtio-serial-bus: Add a port 'name' property for port discovery in guests

The port 'id' or number is internal state between the guest kernel and
our bus implementation. This is invocation-dependent and isn't part of
the guest-host ABI.

To correcly enumerate and map ports between the host and the guest, the...
f146ec9a 01/20/2010 04:25 pm Amit Shah

virtio-serial-bus: Add ability to hot-unplug ports

Signed-off-by: Amit Shah <>
Signed-off-by: Anthony Liguori <>