diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index fe80beebe0..4af0b82569 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -2000,6 +2000,7 @@ Hypervisors may allow certain CPU / machine features to be toggled on/off.
128
+
...
@@ -2230,6 +2231,11 @@ are:
tb-cache The size of translation block cache size an integer (a multiple of MiB) :since:`8.0.0`
=========== ============================================== =================================================== ==============
+``async-teardown``
+ Depending on the ``enabled`` attribute (values ``yes``, ``no``) enable or
+ disable QEMU asynchronous teardown to improve memory reclaiming on a guest.
+ :since:`Since 9.6.0` (QEMU only)
+
Time keeping
------------
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 4121b6a054..5ac5c0b771 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -181,6 +181,7 @@ VIR_ENUM_IMPL(virDomainFeature,
"sbbc",
"ibs",
"tcg",
+ "async-teardown",
);
VIR_ENUM_IMPL(virDomainCapabilitiesPolicy,
@@ -16689,6 +16690,20 @@ virDomainFeaturesDefParse(virDomainDef *def,
return -1;
break;
+ case VIR_DOMAIN_FEATURE_ASYNC_TEARDOWN: {
+ virTristateBool enabled;
+
+ if (virXMLPropTristateBool(nodes[i], "enabled",
+ VIR_XML_PROP_NONE, &enabled) < 0)
+ return -1;
+
+ if (enabled == VIR_TRISTATE_BOOL_ABSENT)
+ enabled = VIR_TRISTATE_BOOL_YES;
+
+ def->features[val] = enabled;
+ break;
+ }
+
case VIR_DOMAIN_FEATURE_LAST:
break;
}
@@ -20628,6 +20643,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDef *src,
case VIR_DOMAIN_FEATURE_MSRS:
case VIR_DOMAIN_FEATURE_TCG:
+ case VIR_DOMAIN_FEATURE_ASYNC_TEARDOWN:
case VIR_DOMAIN_FEATURE_LAST:
break;
}
@@ -27340,6 +27356,12 @@ virDomainDefFormatFeatures(virBuffer *buf,
virDomainFeatureTCGFormat(&childBuf, def);
break;
+ case VIR_DOMAIN_FEATURE_ASYNC_TEARDOWN:
+ if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT)
+ virBufferAsprintf(&childBuf, "\n",
+ virTristateBoolTypeToString(def->features[i]));
+ break;
+
case VIR_DOMAIN_FEATURE_LAST:
break;
}
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index cddaa3824d..c857ba556f 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2170,6 +2170,7 @@ typedef enum {
VIR_DOMAIN_FEATURE_SBBC,
VIR_DOMAIN_FEATURE_IBS,
VIR_DOMAIN_FEATURE_TCG,
+ VIR_DOMAIN_FEATURE_ASYNC_TEARDOWN,
VIR_DOMAIN_FEATURE_LAST
} virDomainFeature;
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index fcf9e00600..c2f56b0490 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -6660,6 +6660,15 @@