vdev pl011
Emulate a PL011 serial device
Synopsis:
vdev pl011 options
Options:
- batch timeout
- Instead of writing one character at a time, batch the output until the number of microseconds specifed by timeout has passed with no new characters coming in.
- delayed seconds|forever
- Delay opening the host device until it is first referenced by the guest.
- hostdev [<|>]host_device_name
- hostdev >"|command_string"
- The first form means use the host_device_name as the source and/or
destination of characters for the vdev.
For a given hostdev option, you can use one of
<
(input) or>
(output) so the host device specified by host_device_name provides input or receives output.To specify separate input and output devices, you can use multiple hostdev options:hostdev <myhostinputdevice hostdev >myhostoutputdevice
Or, you can use neither<
nor>
to indicate the same device is used for both input and output:hostdev myhostdevice
- name device_path
- Specify a device path that you can write commands to in order to control
the size and number of log files created for storing the vdev's output.
For example, you can issue a command to reopen a log file
(i.e., truncate it to zero bytes) after you noticed it was getting too big.
For information about performing this log rotation, refer to
Logging output
in the vdev virtio-console reference. - sched priority
- Send pulses indicating available input on the host device with a priority level of priority.
For a list of options available to all vdevs, see Common vdev options
at the beginning of this
chapter.
Description:
ARM only. The pl011 vdev emulates a PL011 serial device.
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