qemu: add memory-backend-memfd capability check

Check availability of "-object memory-backend-memfd".
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_capabilities.c

@@ -510,6 +510,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "blockdev",
               "vfio-ap",
               "zpci",
+              "memory-backend-memfd",
     );
 
 
@@ -1096,6 +1097,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "sev-guest", QEMU_CAPS_SEV_GUEST },
     { "vfio-ap", QEMU_CAPS_DEVICE_VFIO_AP },
     { "zpci", QEMU_CAPS_DEVICE_ZPCI },
+    { "memory-backend-memfd", QEMU_CAPS_OBJECT_MEMORY_MEMFD },
 };
 
 static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBalloon[] = {

src/qemu/qemu_capabilities.h

@@ -494,6 +494,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_BLOCKDEV, /* -blockdev and blockdev-add are supported */
     QEMU_CAPS_DEVICE_VFIO_AP, /* -device vfio-ap */
     QEMU_CAPS_DEVICE_ZPCI, /* -device zpci */
+    QEMU_CAPS_OBJECT_MEMORY_MEMFD, /* -object memory-backend-memfd */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;

tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml

@@ -162,6 +162,7 @@
   <flag name='tpm-emulator'/>
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
+  <flag name='memory-backend-memfd'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>344910</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml

@@ -160,6 +160,7 @@
   <flag name='machine.pseries.cap-htm'/>
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
+  <flag name='memory-backend-memfd'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>425694</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml

@@ -129,6 +129,7 @@
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
   <flag name='zpci'/>
+  <flag name='memory-backend-memfd'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>374287</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml

@@ -203,6 +203,7 @@
   <flag name='sev-guest'/>
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
+  <flag name='memory-backend-memfd'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>413556</microcodeVersion>

tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml

@@ -160,6 +160,7 @@
   <flag name='machine.pseries.cap-htm'/>
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
+  <flag name='memory-backend-memfd'/>
   <version>2012050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>444131</microcodeVersion>

tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml

@@ -100,6 +100,7 @@
   <flag name='chardev-fd-pass'/>
   <flag name='tpm-emulator'/>
   <flag name='egl-headless'/>
+  <flag name='memory-backend-memfd'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>

tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml

@@ -100,6 +100,7 @@
   <flag name='chardev-fd-pass'/>
   <flag name='tpm-emulator'/>
   <flag name='egl-headless'/>
+  <flag name='memory-backend-memfd'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>

tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml

@@ -131,6 +131,7 @@
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
   <flag name='zpci'/>
+  <flag name='memory-backend-memfd'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>387601</microcodeVersion>

tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml

@@ -205,6 +205,7 @@
   <flag name='usb-storage.werror'/>
   <flag name='egl-headless'/>
   <flag name='vfio-pci.display'/>
+  <flag name='memory-backend-memfd'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>425157</microcodeVersion>