3:59 a.m.
Depends on whether "source path" is specified, the command line
is built like:
* 'path' is specified, with interrupts (/tmp/nahanni is the
ivshmem server socket path)
-chardev socket,path=/tmp/nahanni,id=nahanni
-device ivshmem,chardev=nahanni,size=512m,vectors=8,ioeventfd=on
* 'path' is not specified, without interrupts
-device ivshmem,shm=nahanni,size=512m,vectors=8,ioeventfd=on
* src/qemu/qemu_command.c (New helper qemuBuildMemoryDevStr to
to build args of '-device'; Assign
PCI address for the device; Build
args of '-chardev')
* tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml: (See below)
* tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args: (See below)
* tests/qemuxml2argvtest.c: (Add tests)
---
src/qemu/qemu_command.c | 85 ++++++++++++++++++++++
tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args | 7 ++
tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml | 34 +++++++++
tests/qemuxml2argvtest.c | 2 +
4 files changed, 128 insertions(+), 0 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 440fd62..ffd260f 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1705,6 +1705,16 @@ qemuAssignDevicePCISlots(virDomainDefPtr def,
qemuDomainPCIAddressSetPtr addrs)
/* Nada - none are PCI based (yet) */
}
+ for (i = 0; i < def->nmemorys; i++) {
+ virDomainMemoryDefPtr memory = def->memorys[i];
+
+ if (memory->model == VIR_DOMAIN_MEMORY_MODEL_IVSHMEM) {
+ if (qemuDomainPCIAddressSetNextAddr(addrs,
+ &memory->data.ivshmem.info) <
0)
+ goto error;
+ }
+ }
+
return 0;
error:
@@ -4410,6 +4420,48 @@ error:
return -1;
}
+static char *
+qemuBuildMemoryDevStr(const virDomainMemoryDefPtr def,
+ qemuCapsPtr caps)
+{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+
+ if (def->model == VIR_DOMAIN_MEMORY_MODEL_IVSHMEM) {
+ virBufferAddLit(&buf, "ivshmem");
+
+ if (def->data.ivshmem.path)
+ virBufferAsprintf(&buf, ",chardev=%s",
+ def->data.ivshmem.id);
+ else
+ virBufferAsprintf(&buf, ",shm=%s",
+ def->data.ivshmem.id);
+
+ virBufferAsprintf(&buf, ",size=%llum",
+ def->data.ivshmem.size / (1024 * 1024));
+
+ if (def->data.ivshmem.vectors)
+ virBufferAsprintf(&buf, ",vectors=%u",
+ def->data.ivshmem.vectors);
+
+ if (def->data.ivshmem.ioeventfd)
+ virBufferAddLit(&buf, ",ioeventfd=on");
+
+ if (qemuBuildDeviceAddressStr(&buf, &def->data.ivshmem.info, caps)
< 0)
+ goto error;
+ }
+
+ if (virBufferError(&buf)) {
+ virReportOOMError();
+ goto error;
+ }
+
+ return virBufferContentAndReset(&buf);
+
+error:
+ virBufferFreeAndReset(&buf);
+ return NULL;
+}
+
/*
* Constructs a argv suitable for launching qemu with config defined
* for a given virtual machine.
@@ -6598,6 +6650,39 @@ qemuBuildCommandLine(virConnectPtr conn,
}
}
+ if (def->nmemorys > 0) {
+ for (i = 0; i < def->nmemorys; i++) {
+ char *devstr = NULL;
+ virDomainMemoryDefPtr memory = def->memorys[i];
+
+ switch (memory->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_IVSHMEM:
+ if (!qemuCapsGet(caps, QEMU_CAPS_IVSHMEM)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("ivshmem is not supported by this
QEMU"));
+ goto error;
+ }
+
+ if (memory->data.ivshmem.path) {
+ virCommandAddArg(cmd, "-chardev");
+ virCommandAddArgFormat(cmd, "socket,path=%s,id=%s",
+ memory->data.ivshmem.path,
+ memory->data.ivshmem.id);
+ }
+
+ virCommandAddArg(cmd, "-device");
+ if (!(devstr = qemuBuildMemoryDevStr(memory, caps)))
+ goto error;
+ virCommandAddArg(cmd, devstr);
+ VIR_FREE(devstr);
+
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
if (snapshot)
virCommandAddArgList(cmd, "-loadvm", snapshot->def->name, NULL);
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args
b/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args
new file mode 100644
index 0000000..2f6a096
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.args
@@ -0,0 +1,7 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu \
+-name QEMUGuest1 -S -M pc -m 214 -smp 1 -nographic -monitor \
+unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \
+-usb -hda /dev/HostVG/QEMUGuest1 -net none -serial \
+none -parallel none \
+-chardev socket,path=/tmp/nahanni,id=nahanni \
+-device ivshmem,chardev=nahanni,size=512m,vectors=8,ioeventfd=on
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml
b/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml
new file mode 100644
index 0000000..15040e4
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-ivshmem.xml
@@ -0,0 +1,34 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <title>A description of the test machine.</title>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static' cpuset='1-4,8-20,525'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0'
target='0' unit='0'/>
+ </disk>
+ <memory>
+ <model type='ivshmem'/>
+ <source id='nahanni' path='/tmp/nahanni'/>
+ <size unit="M">512</size>
+ <vectors>8</vectors>
+ <ioeventfd/>
+ </memory>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 48e09ab..8a176d0 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -847,6 +847,8 @@ mymain(void)
QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_IDE_CD, QEMU_CAPS_BLOCKIO);
+ DO_TEST("ivshmem", QEMU_CAPS_NAME, QEMU_CAPS_IVSHMEM);
+
VIR_FREE(driver.stateDir);
virCapabilitiesFree(driver.caps);
VIR_FREE(map);
--
1.7.7.6