[Spice-devel] [PATCH v4] qemu: Use heads parameter for QXL driver

[Frediano Ziglio]

Allows to specify maximum number of head to QXL driver.

Actually can be a compatiblity problem as heads in the XML configuration
was set by default to '1'.

Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
---
 src/qemu/qemu_capabilities.c                       |  2 ++
 src/qemu/qemu_capabilities.h                       |  1 +
 src/qemu/qemu_command.c                            |  5 ++++
 .../qemuxml2argv-video-qxl-device-max-outputs.args |  7 ++++++
 .../qemuxml2argv-video-qxl-device-max-outputs.xml  | 29 ++++++++++++++++++++++
 tests/qemuxml2argvtest.c                           |  3 +++
 6 files changed, 47 insertions(+)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.xml

Changes from v4:
- rebased on new master;
- add test case to qemuxml2argvtest.

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index d8cb32d..0769316 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -288,6 +288,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
 
               "vhost-user-multiqueue", /* 190 */
               "migration-event",
+              "qxl-vga.max_outputs",
     );
 
 
@@ -1651,6 +1652,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxl[] = {
 
 static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxlVga[] = {
     { "vgamem_mb", QEMU_CAPS_QXL_VGA_VGAMEM },
+    { "max_outputs", QEMU_CAPS_QXL_VGA_MAX_OUTPUTS },
 };
 
 struct virQEMUCapsObjectTypeProps {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index f77bd06..88116af 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -231,6 +231,7 @@ typedef enum {
     QEMU_CAPS_CPU_AARCH64_OFF    = 189, /* -cpu ...,aarch64=off */
     QEMU_CAPS_VHOSTUSER_MULTIQUEUE = 190, /* vhost-user with -netdev queues= */
     QEMU_CAPS_MIGRATION_EVENT    = 191, /* MIGRATION event */
+    QEMU_CAPS_QXL_VGA_MAX_OUTPUTS = 192, /* qxl-vga.max_outputs */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 } virQEMUCapsFlags;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 42906a8..34a0574 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -5684,6 +5684,11 @@ qemuBuildDeviceVideoStr(virDomainDefPtr def,
             /* QEMU accepts mebibytes for vgamem_mb. */
             virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vgamem / 1024);
         }
+
+        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_QXL_VGA_MAX_OUTPUTS) &&
+            video->heads > 0) {
+            virBufferAsprintf(&buf, ",max_outputs=%u", video->heads);
+        }
     } else if (video->vram &&
         ((video->type == VIR_DOMAIN_VIDEO_TYPE_VGA &&
           virQEMUCapsGet(qemuCaps, QEMU_CAPS_VGA_VGAMEM)) ||
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.args b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.args
new file mode 100644
index 0000000..bb477a9
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.args
@@ -0,0 +1,7 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
+/usr/bin/qemu -S -M pc -m 1024 -smp 1 -nographic -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \
+-hda /var/lib/libvirt/images/QEMUGuest1 \
+-device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16\
+,max_outputs=3,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0\
+,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.xml b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.xml
new file mode 100644
index 0000000..9426efc
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.xml
@@ -0,0 +1,29 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu>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='file' device='disk'>
+      <driver name='qemu' type='qcow2' cache='none'/>
+      <source file='/var/lib/libvirt/images/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='ide' index='0'/>
+    <video>
+      <model type='qxl' heads='3'/>
+    </video>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index f9b30d9..4cd6892 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1441,6 +1441,9 @@ mymain(void)
     DO_TEST("video-qxl-device-vgamem", QEMU_CAPS_DEVICE,
             QEMU_CAPS_DEVICE_QXL_VGA, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
             QEMU_CAPS_QXL_VGA_VGAMEM);
+    DO_TEST("video-qxl-device-max-outputs", QEMU_CAPS_DEVICE,
+            QEMU_CAPS_DEVICE_QXL_VGA, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
+            QEMU_CAPS_QXL_VGA_VGAMEM, QEMU_CAPS_QXL_VGA_MAX_OUTPUTS);
     DO_TEST_FAILURE("video-qxl-sec-nodevice", QEMU_CAPS_VGA, QEMU_CAPS_VGA_QXL);
     DO_TEST("video-qxl-sec-device", QEMU_CAPS_DEVICE, QEMU_CAPS_DEVICE_QXL_VGA,
             QEMU_CAPS_DEVICE_QXL, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
-- 
2.1.0