[libvirt] [PATCH 10/11] conf: Improve HPT feature handling

[Andrea Bolognani]

Instead of storing separately whether the feature is enabled
or not and what resizing policy should be used, store both of
them in a single place.

Signed-off-by: Andrea Bolognani <abologna at redhat.com>
---
 src/conf/domain_conf.c  | 26 ++++++++++++--------------
 src/conf/domain_conf.h  |  4 ++--
 src/qemu/qemu_command.c |  4 ++--
 src/qemu/qemu_domain.c  |  2 +-
 4 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 19884ec13..c1d549594 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -906,6 +906,7 @@ VIR_ENUM_IMPL(virDomainIOAPIC,
 
 VIR_ENUM_IMPL(virDomainHPTResizing,
               VIR_DOMAIN_HPT_RESIZING_LAST,
+              "none",
               "enabled",
               "disabled",
               "required",
@@ -19239,14 +19240,13 @@ virDomainDefParseXML(xmlDocPtr xml,
             tmp = virXMLPropString(nodes[i], "resizing");
             if (tmp) {
                 int value = virDomainHPTResizingTypeFromString(tmp);
-                if (value < 0) {
+                if (value < 0 || value == VIR_DOMAIN_HPT_RESIZING_NONE) {
                     virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                                    _("Unknown HPT resizing setting: %s"),
                                    tmp);
                     goto error;
                 }
-                def->hpt_resizing = value;
-                def->features[val] = VIR_TRISTATE_SWITCH_ON;
+                def->features[val] = value;
                 VIR_FREE(tmp);
             }
             break;
@@ -21377,16 +21377,13 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
             break;
 
         case VIR_DOMAIN_FEATURE_HPT:
-            if (src->features[i] != dst->features[i] ||
-                src->hpt_resizing != dst->hpt_resizing) {
+            if (src->features[i] != dst->features[i]) {
                 virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                                _("State of feature '%s:%s' differs: "
-                                 "source: '%s:%s', destination: '%s:%s'"),
+                                 "source: '%s', destination: '%s'"),
                                featureName, "resizing",
-                               virTristateSwitchTypeToString(src->features[i]),
-                               virDomainHPTResizingTypeToString(src->hpt_resizing),
-                               virTristateSwitchTypeToString(dst->features[i]),
-                               virDomainHPTResizingTypeToString(dst->hpt_resizing));
+                               virDomainHPTResizingTypeToString(src->features[i]),
+                               virDomainHPTResizingTypeToString(dst->features[i]));
                 return false;
             }
             break;
@@ -26947,10 +26944,11 @@ virDomainDefFormatInternal(virDomainDefPtr def,
                 break;
 
             case VIR_DOMAIN_FEATURE_HPT:
-                if (def->features[i] == VIR_TRISTATE_SWITCH_ON) {
-                    virBufferAsprintf(buf, "<hpt resizing='%s'/>\n",
-                                      virDomainHPTResizingTypeToString(def->hpt_resizing));
-                }
+                if (def->features[i] == VIR_DOMAIN_HPT_RESIZING_NONE)
+                    break;
+
+                virBufferAsprintf(buf, "<hpt resizing='%s'/>\n",
+                                  virDomainHPTResizingTypeToString(def->features[i]));
                 break;
 
             /* coverity[dead_error_begin] */
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 20f0efc36..4e9044ae6 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1871,7 +1871,8 @@ typedef enum {
 VIR_ENUM_DECL(virDomainIOAPIC);
 
 typedef enum {
-    VIR_DOMAIN_HPT_RESIZING_ENABLED = 0,
+    VIR_DOMAIN_HPT_RESIZING_NONE = 0,
+    VIR_DOMAIN_HPT_RESIZING_ENABLED,
     VIR_DOMAIN_HPT_RESIZING_DISABLED,
     VIR_DOMAIN_HPT_RESIZING_REQUIRED,
 
@@ -2364,7 +2365,6 @@ struct _virDomainDef {
     unsigned int hyperv_spinlocks;
     virGICVersion gic_version;
     char *hyperv_vendor_id;
-    virDomainHPTResizing hpt_resizing;
 
     /* These options are of type virTristateSwitch: ON = keep, OFF = drop */
     int caps_features[VIR_DOMAIN_CAPS_FEATURE_LAST];
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 3aabdf7a2..faf09a599 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7266,7 +7266,7 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
             }
         }
 
-        if (def->features[VIR_DOMAIN_FEATURE_HPT] == VIR_TRISTATE_SWITCH_ON) {
+        if (def->features[VIR_DOMAIN_FEATURE_HPT] != VIR_DOMAIN_HPT_RESIZING_NONE) {
             const char *str;
 
             if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT)) {
@@ -7276,7 +7276,7 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
                 goto cleanup;
             }
 
-            str = virDomainHPTResizingTypeToString(def->hpt_resizing);
+            str = virDomainHPTResizingTypeToString(def->features[VIR_DOMAIN_FEATURE_HPT]);
             if (!str) {
                 virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                _("Invalid setting for HPT resizing"));
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index cfea1f500..5d21d3703 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3244,7 +3244,7 @@ qemuDomainDefValidateFeatures(const virDomainDef *def)
             break;
 
         case VIR_DOMAIN_FEATURE_HPT:
-            if (def->features[i] == VIR_TRISTATE_SWITCH_ON &&
+            if (def->features[i] != VIR_DOMAIN_HPT_RESIZING_NONE &&
                 !qemuDomainIsPSeries(def)) {
                 virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                                _("The '%s' feature is only supported for %s guests"),
-- 
2.14.3