[libvirt] [PATCH v3 3/4] qemu_capabilities: Introduce QEMU_CAPS_PM_WAKEUP_SUPPORT

[Michal Privoznik]

This capability tells whether qemu is capable of waking up the
guest from PM suspend.

Based-on-work-of: Daniel Henrique Barboza <danielhb413 at gmail.com>
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/qemu/qemu_capabilities.c                  | 24 +++++++++++++++++++
 src/qemu/qemu_capabilities.h                  |  3 +++
 .../caps_4.0.0.riscv32.replies                | 11 +++++++++
 .../caps_4.0.0.riscv32.xml                    |  1 +
 .../caps_4.0.0.riscv64.replies                | 11 +++++++++
 .../caps_4.0.0.riscv64.xml                    |  1 +
 .../caps_4.0.0.x86_64.replies                 | 11 +++++++++
 .../caps_4.0.0.x86_64.xml                     |  1 +
 8 files changed, 63 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 5b3a2d0c33..389986d924 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -525,6 +525,9 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "scsi-disk.device_id",
               "virtio-pci-non-transitional",
               "query-current-machine",
+
+              /* 330 */
+              "wakeup-suspend-support",
     );
 
 
@@ -2769,6 +2772,25 @@ virQEMUCapsProbeQMPSEVCapabilities(virQEMUCapsPtr qemuCaps,
 }
 
 
+static int
+virQEMUCapsProbeQMPCurrentMachine(virQEMUCapsPtr qemuCaps,
+                                  qemuMonitorPtr mon)
+{
+    qemuMonitorCurrentMachineInfo info = { 0 };
+
+    if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CURRENT_MACHINE))
+        return 0;
+
+    if (qemuMonitorGetCurrentMachineInfo(mon, &info) < 0)
+        return -1;
+
+    if (info.wakeupSuspendSupport)
+        virQEMUCapsSet(qemuCaps, QEMU_CAPS_PM_WAKEUP_SUPPORT);
+
+    return 0;
+}
+
+
 bool
 virQEMUCapsCPUFilterFeatures(const char *name,
                              void *opaque)
@@ -4373,6 +4395,8 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
         return -1;
     if (virQEMUCapsProbeQMPSEVCapabilities(qemuCaps, mon) < 0)
         return -1;
+    if (virQEMUCapsProbeQMPCurrentMachine(qemuCaps, mon) < 0)
+        return -1;
 
     virQEMUCapsInitProcessCaps(qemuCaps);
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index d3f90e82a8..721092b91b 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -509,6 +509,9 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL, /* virtio *-pci-{non-}transitional devices */
     QEMU_CAPS_QUERY_CURRENT_MACHINE, /* query-current-machine command */
 
+    /* 330 */
+    QEMU_CAPS_PM_WAKEUP_SUPPORT, /* domain has wake-up from suspend support */
+
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
 
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.replies b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.replies
index c7dac44289..a4d5786301 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.replies
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.replies
@@ -17756,3 +17756,14 @@
   ],
   "id": "libvirt-39"
 }
+
+{
+  "execute": "query-current-machine",
+  "id": "libvirt-40"
+}
+
+{
+  "return": {
+    "wakeup-suspend-support": true
+  }
+}
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
index 9d20be128a..c82b0d5e74 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -164,6 +164,7 @@
   <flag name='scsi-disk.device_id'/>
   <flag name='virtio-pci-non-transitional'/>
   <flag name='query-current-machine'/>
+  <flag name='wakeup-suspend-support'/>
   <version>3001091</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.replies b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.replies
index 6fda8ad2d2..f2d209cd91 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.replies
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.replies
@@ -17756,3 +17756,14 @@
   ],
   "id": "libvirt-39"
 }
+
+{
+  "execute": "query-current-machine",
+  "id": "libvirt-40"
+}
+
+{
+  "return": {
+    "wakeup-suspend-support": true
+  }
+}
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
index a1a59e14cb..bf7f95e3b1 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -164,6 +164,7 @@
   <flag name='scsi-disk.device_id'/>
   <flag name='virtio-pci-non-transitional'/>
   <flag name='query-current-machine'/>
+  <flag name='wakeup-suspend-support'/>
   <version>3001091</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.replies b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.replies
index aa9ee38c80..47ed75d359 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.replies
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.replies
@@ -21052,6 +21052,17 @@
   }
 }
 
+{
+  "execute": "query-current-machine",
+  "id": "libvirt-50"
+}
+
+{
+  "return": {
+    "wakeup-suspend-support": true
+  }
+}
+
 {
   "execute": "qmp_capabilities",
   "id": "libvirt-1"
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
index 899c0cf7c8..df1b0da731 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -202,6 +202,7 @@
   <flag name='scsi-disk.device_id'/>
   <flag name='virtio-pci-non-transitional'/>
   <flag name='query-current-machine'/>
+  <flag name='wakeup-suspend-support'/>
   <version>3001050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100758</microcodeVersion>
-- 
2.21.0