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由 Amit Shah 提交于
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 'name' property is used. Example: -device virtserialport,name=org.qemu.port.0 This invocation will get us a char device in the guest at: /dev/virtio-ports/org.qemu.port.0 which can be a symlink to /dev/vport0p3 This 'name' property is exposed by the guest kernel in a sysfs attribute: /sys/kernel/virtio-ports/vport0p3/name A simple udev script can pick up this name and create the symlink mentioned above. Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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