[libvirt] [PATCH] qemu: use target.port for isa-serial

[Thilo Cestonaro]

A configured target.port is currently totaly ignored, while contsructing
qemu commandline, for all types of serial devices. This patch adds a -device
parameter "index" for the target model isa-serial.
This enables the user to specify which serial device will end in which ttySX
device.
---
 src/qemu/qemu_command.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index bbd3cd0a7..a685abec0 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -10290,6 +10290,22 @@ qemuBuildSerialChrDeviceStr(char **deviceStr,
                       virDomainChrSerialTargetModelTypeToString(serial->targetModel),
                       serial->info.alias, serial->info.alias);
 
+    switch ((virDomainChrSerialTargetModel) serial->targetModel) {
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_ISA_SERIAL:
+        if (serial->target.port != -1)
+            virBufferAsprintf(&cmd, ",index=%d", serial->target.port);
+        break;
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_NONE:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_USB_SERIAL:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_PCI_SERIAL:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_SPAPR_VTY:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_PL011:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_SCLPCONSOLE:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_SCLPLMCONSOLE:
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_MODEL_LAST:
+        break;
+    }
+
     if (qemuBuildDeviceAddressStr(&cmd, def, &serial->info, qemuCaps) < 0)
         goto error;
 
-- 
2.15.1