conf: audit: Audit physical memory size rather than balloon request

Since the balloon driver does not guarantee that it returns memory to
the host, using the value in the audit message is not a good idea.

This patch removes auditing from updating the balloon size and reports
the total physical size at startup.

src/conf/domain_audit.c

@@ -883,7 +883,8 @@ virDomainAuditStart(virDomainObjPtr vm, const char *reason, bool success)
     if (vm->def->tpm)
         virDomainAuditTPM(vm, vm->def->tpm, "start", true);
 
-    virDomainAuditMemory(vm, 0, vm->def->mem.cur_balloon, "start", true);
+    virDomainAuditMemory(vm, 0, virDomainDefGetMemoryActual(vm->def),
+                         "start", true);
     virDomainAuditVcpu(vm, 0, vm->def->vcpus, "start", true);
     if (vm->def->iothreads)
         virDomainAuditIOThread(vm, 0, vm->def->iothreads, "start", true);

src/qemu/qemu_driver.c

@@ -2386,11 +2386,7 @@ static int qemuDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
             priv = vm->privateData;
             qemuDomainObjEnterMonitor(driver, vm);
             r = qemuMonitorSetBalloon(priv->mon, newmem);
-            if (qemuDomainObjExitMonitor(driver, vm) < 0)
-                goto endjob;
-            virDomainAuditMemory(vm, def->mem.cur_balloon, newmem, "update",
-                                 r == 1);
-            if (r < 0)
+            if (qemuDomainObjExitMonitor(driver, vm) < 0 || r < 0)
                 goto endjob;
 
             /* Lack of balloon support is a fatal error */