From c458102192d82a3a8a5f045cd9df34c29b287ab8 Mon Sep 17 00:00:00 2001
From: Jiri Denemark <jdenemar@redhat.com>
Date: Wed, 10 Jun 2020 16:13:15 +0200
Subject: [PATCH 4/8] qemu: Avoid deprecated query-migrate-cache-size QMP
 command

The same functionality can be achieved using query-migrate-parameters
QMP command and checking the xbzrle-cache-size parameter.

https://bugzilla.redhat.com/show_bug.cgi?id=1829544

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
---
 src/qemu/qemu_driver.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3482dccc43..1ad33197e0 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -14006,7 +14006,9 @@ qemuDomainMigrateGetCompressionCache(virDomainPtr dom,
     virQEMUDriverPtr driver = dom->conn->privateData;
     virDomainObjPtr vm;
     qemuDomainObjPrivatePtr priv;
+    g_autoptr(qemuMigrationParams) migParams = NULL;
     int ret = -1;
+    int rc;
 
     virCheckFlags(0, -1);
 
@@ -14031,12 +14033,23 @@ qemuDomainMigrateGetCompressionCache(virDomainPtr dom,
         goto endjob;
     }
 
-    qemuDomainObjEnterMonitor(driver, vm);
+    if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_MIGRATION_PARAM_XBZRLE_CACHE_SIZE)) {
+        if (qemuMigrationParamsFetch(driver, vm, QEMU_ASYNC_JOB_NONE,
+                                     &migParams) < 0)
+            goto endjob;
 
-    ret = qemuMonitorGetMigrationCacheSize(priv->mon, cacheSize);
+        if (qemuMigrationParamsGetULL(migParams,
+                                      QEMU_MIGRATION_PARAM_XBZRLE_CACHE_SIZE,
+                                      cacheSize) < 0)
+            goto endjob;
+    } else {
+        qemuDomainObjEnterMonitor(driver, vm);
+        rc = qemuMonitorGetMigrationCacheSize(priv->mon, cacheSize);
+        if (qemuDomainObjExitMonitor(driver, vm) < 0 || rc < 0)
+            goto endjob;
+    }
 
-    if (qemuDomainObjExitMonitor(driver, vm) < 0)
-        ret = -1;
+    ret = 0;
 
  endjob:
     qemuDomainObjEndJob(driver, vm);
-- 
2.27.0