Revert "qemu: Use heads parameter for QXL driver"

This reverts commit 7b401c3b.

Until libvirt is able to differentiate whether heads='1' is just a
leftover from previous libvirt or whether that's added by user on
purpose and also whether the domain was started with the support for
qxl's max_outputs, we cannot incorporate this patch into the tree
due to compatibility reasons.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

src/qemu/qemu_capabilities.c

@@ -288,7 +288,6 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
 
               "vhost-user-multiqueue", /* 190 */
               "migration-event",
-              "qxl-vga.max_outputs",
     );
 
 
@@ -1652,7 +1651,6 @@ 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 {

src/qemu/qemu_capabilities.h

@@ -231,7 +231,6 @@ 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;

src/qemu/qemu_command.c

@@ -5684,11 +5684,6 @@ 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)) ||

tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.args

-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

tests/qemuxml2argvdata/qemuxml2argv-video-qxl-device-max-outputs.xml

-<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>

tests/qemuxml2argvtest.c

@@ -1441,9 +1441,6 @@ 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);