[PATCH 09/51] qemu: Always assume support for QEMU_CAPS_DEVICE_VFIO_PCI

[Peter Krempa <pkrempa@xxxxxxxxxx>]

The 'display' option for the 'vfio-pci' device was added in qemu-2.12
and can't be compiled out. Assume support for the flag.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_domain.c                              | 11 ++++-------
 src/qemu/qemu_validate.c                            |  6 ------
 tests/qemuxml2argvdata/hostdev-mdev-precreated.args |  2 +-
 tests/qemuxml2argvtest.c                            |  3 +--
 4 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 9781df1355..c7d64e1b5c 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -6034,13 +6034,11 @@ qemuDomainDeviceHostdevDefPostParseRestoreBackendAlias(virDomainHostdevDef *host


 static int
-qemuDomainHostdevDefMdevPostParse(virDomainHostdevSubsysMediatedDev *mdevsrc,
-                                  virQEMUCaps *qemuCaps)
+qemuDomainHostdevDefMdevPostParse(virDomainHostdevSubsysMediatedDev *mdevsrc)
 {
     /* QEMU 2.12 added support for vfio-pci display type, we default to
      * 'display=off' to stay safe from future changes */
-    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VFIO_PCI_DISPLAY) &&
-        mdevsrc->model == VIR_MDEV_MODEL_TYPE_VFIO_PCI &&
+    if (mdevsrc->model == VIR_MDEV_MODEL_TYPE_VFIO_PCI &&
         mdevsrc->display == VIR_TRISTATE_SWITCH_ABSENT)
         mdevsrc->display = VIR_TRISTATE_SWITCH_OFF;

@@ -6050,7 +6048,6 @@ qemuDomainHostdevDefMdevPostParse(virDomainHostdevSubsysMediatedDev *mdevsrc,

 static int
 qemuDomainHostdevDefPostParse(virDomainHostdevDef *hostdev,
-                              virQEMUCaps *qemuCaps,
                               unsigned int parseFlags)
 {
     virDomainHostdevSubsys *subsys = &hostdev->source.subsys;
@@ -6063,7 +6060,7 @@ qemuDomainHostdevDefPostParse(virDomainHostdevDef *hostdev,

     if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
         hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV &&
-        qemuDomainHostdevDefMdevPostParse(&subsys->u.mdev, qemuCaps) < 0)
+        qemuDomainHostdevDefMdevPostParse(&subsys->u.mdev) < 0)
         return -1;

     return 0;
@@ -6213,7 +6210,7 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDef *dev,
         break;

     case VIR_DOMAIN_DEVICE_HOSTDEV:
-        ret = qemuDomainHostdevDefPostParse(dev->data.hostdev, qemuCaps, parseFlags);
+        ret = qemuDomainHostdevDefPostParse(dev->data.hostdev, parseFlags);
         break;

     case VIR_DOMAIN_DEVICE_TPM:
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index d5fe1cbd73..1346bbfb44 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -2341,12 +2341,6 @@ qemuValidateDomainMdevDefVFIOPCI(const virDomainHostdevDef *hostdev,
     if (dev->display == VIR_TRISTATE_SWITCH_ABSENT)
         return 0;

-    if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VFIO_PCI_DISPLAY)) {
-        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                       _("display property of device vfio-pci is not supported by this version of QEMU"));
-        return -1;
-    }
-
     if (dev->model != VIR_MDEV_MODEL_TYPE_VFIO_PCI) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("<hostdev> attribute 'display' is only supported with model='vfio-pci'"));
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-precreated.args b/tests/qemuxml2argvdata/hostdev-mdev-precreated.args
index 2e49cff0e2..7c76cd5d15 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-precreated.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-precreated.args
@@ -27,5 +27,5 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest2/.config \
 -boot strict=on \
 -usb \
 -audiodev '{"id":"audio1","driver":"none"}' \
--device vfio-pci,id=hostdev0,sysfsdev=/sys/bus/mdev/devices/53764d0e-85a0-42b4-af5c-2046b460b1dc,bus=pci.0,addr=0x2 \
+-device vfio-pci,id=hostdev0,sysfsdev=/sys/bus/mdev/devices/53764d0e-85a0-42b4-af5c-2046b460b1dc,display=off,bus=pci.0,addr=0x2 \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 8afb2bf2be..1fe2fafeab 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1714,8 +1714,7 @@ mymain(void)
     DO_TEST_CAPS_LATEST("hostdev-mdev-display-vnc");
     DO_TEST_CAPS_LATEST("hostdev-mdev-display-vnc-egl-headless");
     DO_TEST_PARSE_ERROR("hostdev-mdev-display-missing-graphics",
-            QEMU_CAPS_DEVICE_VFIO_PCI,
-            QEMU_CAPS_VFIO_PCI_DISPLAY);
+            QEMU_CAPS_DEVICE_VFIO_PCI);
     DO_TEST_CAPS_LATEST("hostdev-mdev-display-ramfb");
     DO_TEST_CAPS_LATEST_PARSE_ERROR("hostdev-mdev-display-ramfb-multiple");
     DO_TEST_PARSE_ERROR("hostdev-vfio-zpci-wrong-arch",
-- 
2.41.0