[libvirt] [PATCH 2/2] Add QEMU support for virtio channel
Support virtio-serial controller and virtio channel in QEMU backend. Will output
the following for virtio-serial controller:
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4
and the following for a virtio channel:
-chardev pty,id=channel0 \
-device virtserialport,chardev=channel0,name=org.linux-kvm.port.0
* src/qemu/qemu_conf.c: Add argument output for virtio
* tests/qemuxml2argvtest.c
tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
: Add test for QEMU command line generation
---
src/qemu/qemu_conf.c | 38 +++++++++++++++++++-
.../qemuxml2argv-channel-virtio.args | 1 +
tests/qemuxml2argvtest.c | 1 +
3 files changed, 39 insertions(+), 1 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 0c67334..7123827 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -1681,7 +1681,6 @@ qemuAssignDevicePCISlots(virDomainDefPtr def)
}
for (i = 0; i < def->nchannels ; i++) {
/* Nada - none are PCI based (yet) */
- /* XXX virtio-serial will need one */
}
if (def->watchdog) {
qemuAssignDevicePCISlot(&def->watchdog->info, nextslot++);
@@ -2121,6 +2120,15 @@ qemuBuildControllerDevStr(virDomainControllerDefPtr def)
virBufferVSprintf(&buf, ",id=scsi%d", def->idx);
break;
+ case VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL:
+ if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
+ virBufferAddLit(&buf, "virtio-serial-pci");
+ } else {
+ virBufferAddLit(&buf, "virtio-serial");
+ }
+ virBufferVSprintf(&buf, ",id=virtio-serial%d", def->idx);
+ break;
+
/* We always get an IDE controller, whether we want it or not. */
case VIR_DOMAIN_CONTROLLER_TYPE_IDE:
default:
@@ -3508,6 +3516,34 @@ int qemudBuildCommandLine(virConnectPtr conn,
}
ADD_ARG(virBufferContentAndReset(&buf));
+ break;
+
+ case VIR_DOMAIN_CHR_TARGET_TYPE_VIRTIO:
+ if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
+ qemudReportError(conn, NULL, NULL, VIR_ERR_NO_SUPPORT, "%s",
+ _("virtio channel requires QEMU to support -device"));
+ goto error;
+ }
+
+ qemudBuildCommandLineChrDevChardevStr(channel, &buf);
+ if (virBufferError(&buf))
+ goto error;
+
+ ADD_ARG_LIT("-chardev");
+ ADD_ARG(virBufferContentAndReset(&buf));
+
+ virBufferVSprintf(&buf, "virtserialport,chardev=%s",
+ channel->info.alias);
+ if (channel->target.name) {
+ virBufferVSprintf(&buf, ",name=%s",
channel->target.name);
+ }
+ if (virBufferError(&buf))
+ goto error;
+
+ ADD_ARG_LIT("-device");
+ ADD_ARG(virBufferContentAndReset(&buf));
+
+ break;
}
}
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
new file mode 100644
index 0000000..6cb2a8f
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
@@ -0,0 +1 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214
-smp 1 -nographic -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot
c -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -hda
/dev/HostVG/QEMUGuest1 -chardev pty,id=channel0 -device
virtserialport,chardev=channel0,name=org.linux-kvm.port.0 -usb -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index fc237c2..f6b33c2 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -297,6 +297,7 @@ mymain(int argc, char **argv)
DO_TEST("console-compat-chardev",
QEMUD_CMD_FLAG_CHARDEV|QEMUD_CMD_FLAG_DEVICE);
DO_TEST("channel-guestfwd", QEMUD_CMD_FLAG_CHARDEV|QEMUD_CMD_FLAG_DEVICE);
+ DO_TEST("channel-virtio", QEMUD_CMD_FLAG_DEVICE);
DO_TEST("watchdog", 0);
DO_TEST("watchdog-device", QEMUD_CMD_FLAG_DEVICE);
--
1.6.6