diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 4fc3176ad3cef58e9e8e6391207a7c8206a14da0..70acbde80aa19828e1df988a4ad930e3373b3af8 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7298,6 +7298,26 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
         }
     }
 
+    if (def->features[VIR_DOMAIN_FEATURE_HTM] != VIR_TRISTATE_SWITCH_ABSENT) {
+        const char *str;
+
+        if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_CAP_HTM)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                           _("HTM configuration is not supported by this "
+                             "QEMU binary"));
+            goto cleanup;
+        }
+
+        str = virTristateSwitchTypeToString(def->features[VIR_DOMAIN_FEATURE_HTM]);
+        if (!str) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                           _("Invalid setting for HTM state"));
+            goto cleanup;
+        }
+
+        virBufferAsprintf(&buf, ",cap-htm=%s", str);
+    }
+
     if (cpu && cpu->model &&
         cpu->mode == VIR_CPU_MODE_HOST_MODEL &&
         qemuDomainIsPSeries(def) &&
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index e57fc0b4f4f2c7369b48d325c8887d2cdb6a975b..e67165612180f1d9f9a9e26daf6bbadbf48db491 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3852,6 +3852,19 @@ qemuDomainDefValidateFeatures(const virDomainDef *def,
             }
             break;
 
+        case VIR_DOMAIN_FEATURE_HTM:
+            if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT &&
+                !qemuDomainIsPSeries(def)) {
+                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                               _("The '%s' feature is not supported for "
+                                 "architecture '%s' or machine type '%s'"),
+                               featureName,
+                               virArchToString(def->os.arch),
+                               def->os.machine);
+                return -1;
+            }
+            break;
+
         case VIR_DOMAIN_FEATURE_ACPI:
         case VIR_DOMAIN_FEATURE_APIC:
         case VIR_DOMAIN_FEATURE_PAE:
@@ -3865,7 +3878,6 @@ qemuDomainDefValidateFeatures(const virDomainDef *def,
         case VIR_DOMAIN_FEATURE_PMU:
         case VIR_DOMAIN_FEATURE_VMPORT:
         case VIR_DOMAIN_FEATURE_VMCOREINFO:
-        case VIR_DOMAIN_FEATURE_HTM:
         case VIR_DOMAIN_FEATURE_LAST:
             break;
         }
diff --git a/tests/qemuxml2argvdata/pseries-features.args b/tests/qemuxml2argvdata/pseries-features.args
index 12c14715c676b2890cc30a3f57e6cfca9c2459f6..226d43df440053c9721695b8917bef0d637fe229 100644
--- a/tests/qemuxml2argvdata/pseries-features.args
+++ b/tests/qemuxml2argvdata/pseries-features.args
@@ -8,7 +8,7 @@ QEMU_AUDIO_DRV=none \
 -name guest \
 -S \
 -machine pseries,accel=tcg,usb=off,dump-guest-core=off,resize-hpt=required,\
-cap-hpt-max-page-size=1048576k \
+cap-hpt-max-page-size=1048576k,cap-htm=on \
 -m 512 \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \