Re: [PATCHv2 2/2] Introduce virTristateSwitch enum

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On 07/16/2014 04:34 AM, Ján Tomko wrote:
> For the values "default", "on", "off"
> 
> Replaces
> virDeviceAddressPCIMulti
> virDomainFeatureState
> virDomainIoEventFd
> virDomainVirtioEventIdx
> virDomainDiskCopyOnRead
> virDomainMemDump
> virDomainPCIRombarMode
> virDomainGraphicsSpicePlaybackCompression
> ---
>  src/conf/device_conf.c   |   8 +--
>  src/conf/device_conf.h   |  10 ----
>  src/conf/domain_conf.c   | 145 ++++++++++++++++++-----------------------------
>  src/conf/domain_conf.h   |  73 ++----------------------
>  src/libvirt_private.syms |  18 +-----
>  src/libxl/libxl_conf.c   |   6 +-
>  src/lxc/lxc_container.c  |   4 +-
>  src/lxc/lxc_native.c     |   2 +-
>  src/qemu/qemu_command.c  |  68 +++++++++++-----------
>  src/qemu/qemu_process.c  |   2 +-
>  src/util/virutil.c       |   6 ++
>  src/util/virutil.h       |  10 ++++
>  src/vbox/vbox_tmpl.c     |  22 +++----
>  src/xenxs/xen_sxpr.c     |  20 +++----
>  src/xenxs/xen_xm.c       |  20 +++----
>  15 files changed, 150 insertions(+), 264 deletions(-)
> 
> diff --git a/src/conf/device_conf.c b/src/conf/device_conf.c
> index 6412d24..b3b04e1 100644
> --- a/src/conf/device_conf.c
> +++ b/src/conf/device_conf.c
> @@ -32,12 +32,6 @@
>  
>  #define VIR_FROM_THIS VIR_FROM_DEVICE
>  
> -VIR_ENUM_IMPL(virDeviceAddressPCIMulti,
> -              VIR_DEVICE_ADDRESS_PCI_MULTI_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
>  VIR_ENUM_IMPL(virInterfaceState,
>                VIR_INTERFACE_STATE_LAST,
>                "" /* value of zero means no state */,
> @@ -98,7 +92,7 @@ virDevicePCIAddressParseXML(xmlNodePtr node,
>      }
>  
>      if (multi &&
> -        ((addr->multi = virDeviceAddressPCIMultiTypeFromString(multi)) <= 0)) {
> +        ((addr->multi = virTristateSwitchTypeFromString(multi)) <= 0)) {
>          virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                         _("Unknown value '%s' for <address> 'multifunction' attribute"),
>                         multi);
> diff --git a/src/conf/device_conf.h b/src/conf/device_conf.h
> index 0c65a5a..f067a35 100644
> --- a/src/conf/device_conf.h
> +++ b/src/conf/device_conf.h
> @@ -33,16 +33,6 @@
>  # include "virbuffer.h"
>  
>  typedef enum {
> -    VIR_DEVICE_ADDRESS_PCI_MULTI_DEFAULT = 0,
> -    VIR_DEVICE_ADDRESS_PCI_MULTI_ON,
> -    VIR_DEVICE_ADDRESS_PCI_MULTI_OFF,
> -
> -    VIR_DEVICE_ADDRESS_PCI_MULTI_LAST
> -} virDeviceAddressPCIMulti;
> -
> -VIR_ENUM_DECL(virDeviceAddressPCIMulti)
> -
> -typedef enum {
>      VIR_INTERFACE_STATE_UNKNOWN = 1,
>      VIR_INTERFACE_STATE_NOT_PRESENT,
>      VIR_INTERFACE_STATE_DOWN,
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index e374604..b1e18a4 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -144,11 +144,6 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
>                "hyperv",
>                "pvspinlock")
>  
> -VIR_ENUM_IMPL(virDomainFeatureState, VIR_DOMAIN_FEATURE_STATE_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
>  VIR_ENUM_IMPL(virDomainHyperv, VIR_DOMAIN_HYPERV_LAST,
>                "relaxed",
>                "vapic",
> @@ -257,21 +252,6 @@ VIR_ENUM_IMPL(virDomainDeviceSGIO, VIR_DOMAIN_DEVICE_SGIO_LAST,
>                "filtered",
>                "unfiltered")
>  
> -VIR_ENUM_IMPL(virDomainIoEventFd, VIR_DOMAIN_IO_EVENT_FD_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
> -VIR_ENUM_IMPL(virDomainVirtioEventIdx, VIR_DOMAIN_VIRTIO_EVENT_IDX_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
> -VIR_ENUM_IMPL(virDomainDiskCopyOnRead, VIR_DOMAIN_DISK_COPY_ON_READ_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
>  VIR_ENUM_IMPL(virDomainController, VIR_DOMAIN_CONTROLLER_TYPE_LAST,
>                "ide",
>                "fdc",
> @@ -434,11 +414,6 @@ VIR_ENUM_IMPL(virDomainSoundModel, VIR_DOMAIN_SOUND_MODEL_LAST,
>                "ich6",
>                "ich9")
>  
> -VIR_ENUM_IMPL(virDomainMemDump, VIR_DOMAIN_MEM_DUMP_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
>  VIR_ENUM_IMPL(virDomainMemballoonModel, VIR_DOMAIN_MEMBALLOON_MODEL_LAST,
>                "virtio",
>                "xen",
> @@ -547,12 +522,6 @@ VIR_ENUM_IMPL(virDomainGraphicsSpiceZlibCompression,
>                "never",
>                "always");
>  
> -VIR_ENUM_IMPL(virDomainGraphicsSpicePlaybackCompression,
> -              VIR_DOMAIN_GRAPHICS_SPICE_PLAYBACK_COMPRESSION_LAST,
> -              "default",
> -              "on",
> -              "off");
> -
>  VIR_ENUM_IMPL(virDomainGraphicsSpiceMouseMode,
>                VIR_DOMAIN_GRAPHICS_SPICE_MOUSE_MODE_LAST,
>                "default",
> @@ -587,12 +556,6 @@ VIR_ENUM_IMPL(virDomainHostdevCaps, VIR_DOMAIN_HOSTDEV_CAPS_TYPE_LAST,
>                "misc",
>                "net")
>  
> -VIR_ENUM_IMPL(virDomainPCIRombarMode,
> -              VIR_DOMAIN_PCI_ROMBAR_LAST,
> -              "default",
> -              "on",
> -              "off")
> -
>  VIR_ENUM_IMPL(virDomainHub, VIR_DOMAIN_HUB_TYPE_LAST,
>                "usb")
>  
> @@ -2537,7 +2500,7 @@ virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info, unsigned int flags)
>          return true;
>      if (info->mastertype != VIR_DOMAIN_CONTROLLER_MASTER_NONE)
>          return true;
> -    if ((info->rombar != VIR_DOMAIN_PCI_ROMBAR_DEFAULT) ||
> +    if ((info->rombar != VIR_TRISTATE_SWITCH_ABSENT) ||
>          info->romfile)
>          return true;
>      if (info->bootIndex)
> @@ -3144,7 +3107,7 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
>          virBufferAddLit(buf, "<rom");
>          if (info->rombar) {
>  
> -            const char *rombar = virDomainPCIRombarModeTypeToString(info->rombar);
> +            const char *rombar = virTristateSwitchTypeToString(info->rombar);
>  
>              if (!rombar) {
>                  virReportError(VIR_ERR_INTERNAL_ERROR,
> @@ -3176,7 +3139,7 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
>                            info->addr.pci.function);
>          if (info->addr.pci.multi) {
>             virBufferAsprintf(buf, " multifunction='%s'",
> -                             virDeviceAddressPCIMultiTypeToString(info->addr.pci.multi));
> +                             virTristateSwitchTypeToString(info->addr.pci.multi));
>          }
>          break;
>  
> @@ -3661,7 +3624,7 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
>      if (rom) {
>          char *rombar = virXMLPropString(rom, "bar");
>          if (rombar &&
> -            ((info->rombar = virDomainPCIRombarModeTypeFromString(rombar)) <= 0)) {
> +            ((info->rombar = virTristateSwitchTypeFromString(rombar)) <= 0)) {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                             _("unknown rom bar value '%s'"), rombar);
>              VIR_FREE(rombar);
> @@ -5728,7 +5691,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
>      }
>  
>      if (removable) {
> -        if ((def->removable = virDomainFeatureStateTypeFromString(removable)) < 0) {
> +        if ((def->removable = virTristateSwitchTypeFromString(removable)) < 0) {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                             _("unknown disk removable status '%s'"), removable);
>              goto error;
> @@ -5741,7 +5704,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
>          }
>      } else {
>          if (def->bus == VIR_DOMAIN_DISK_BUS_USB) {
> -            def->removable = VIR_DOMAIN_FEATURE_STATE_DEFAULT;
> +            def->removable = VIR_TRISTATE_SWITCH_ABSENT;
>          }
>      }
>  
> @@ -5801,7 +5764,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
>              goto error;
>          }
>  
> -        if ((val = virDomainIoEventFdTypeFromString(ioeventfd)) <= 0) {
> +        if ((val = virTristateSwitchTypeFromString(ioeventfd)) <= 0) {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                             _("unknown disk ioeventfd mode '%s'"),
>                             ioeventfd);
> @@ -5819,7 +5782,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
>          }
>  
>          int idx;
> -        if ((idx = virDomainVirtioEventIdxTypeFromString(event_idx)) <= 0) {
> +        if ((idx = virTristateSwitchTypeFromString(event_idx)) <= 0) {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                             _("unknown disk event_idx mode '%s'"),
>                             event_idx);
> @@ -5830,7 +5793,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
>  
>      if (copy_on_read) {
>          int cor;
> -        if ((cor = virDomainDiskCopyOnReadTypeFromString(copy_on_read)) <= 0) {
> +        if ((cor = virTristateSwitchTypeFromString(copy_on_read)) <= 0) {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                             _("unknown disk copy_on_read mode '%s'"),
>                             copy_on_read);
> @@ -6972,7 +6935,7 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt,
>          }
>          if (ioeventfd) {
>              int val;
> -            if ((val = virDomainIoEventFdTypeFromString(ioeventfd)) <= 0) {
> +            if ((val = virTristateSwitchTypeFromString(ioeventfd)) <= 0) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                 _("unknown interface ioeventfd mode '%s'"),
>                                 ioeventfd);
> @@ -6982,7 +6945,7 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt,
>          }
>          if (event_idx) {
>              int idx;
> -            if ((idx = virDomainVirtioEventIdxTypeFromString(event_idx)) <= 0) {
> +            if ((idx = virTristateSwitchTypeFromString(event_idx)) <= 0) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                 _("unknown interface event_idx mode '%s'"),
>                                 event_idx);
> @@ -8726,7 +8689,7 @@ virDomainGraphicsDefParseXML(xmlNodePtr node,
>                      }
>  
>                      if ((compressionVal =
> -                         virDomainGraphicsSpicePlaybackCompressionTypeFromString(compression)) <= 0) {
> +                         virTristateSwitchTypeFromString(compression)) <= 0) {
>                          virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                                         _("unknown spice playback compression"));
>                          VIR_FREE(compression);
> @@ -11351,7 +11314,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>  
>      /* and info about it */
>      if ((tmp = virXPathString("string(./memory[1]/@dumpCore)", ctxt)) &&
> -        (def->mem.dump_core = virDomainMemDumpTypeFromString(tmp)) <= 0) {
> +        (def->mem.dump_core = virTristateSwitchTypeFromString(tmp)) <= 0) {
>          virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                         _("Invalid memory core dump attribute value '%s'"), tmp);
>          goto error;
> @@ -11820,7 +11783,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>          case VIR_DOMAIN_FEATURE_APIC:
>              if ((tmp = virXPathString("string(./features/apic/@eoi)", ctxt))) {
>                  int eoi;
> -                if ((eoi = virDomainFeatureStateTypeFromString(tmp)) <= 0) {
> +                if ((eoi = virTristateSwitchTypeFromString(tmp)) <= 0) {
>                      virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                     _("unknown value for attribute eoi: '%s'"),
>                                     tmp);
> @@ -11836,14 +11799,14 @@ virDomainDefParseXML(xmlDocPtr xml,
>          case VIR_DOMAIN_FEATURE_VIRIDIAN:
>          case VIR_DOMAIN_FEATURE_PRIVNET:
>          case VIR_DOMAIN_FEATURE_HYPERV:
> -            def->features[val] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[val] = VIR_TRISTATE_SWITCH_ON;
>              break;
>  
>          case VIR_DOMAIN_FEATURE_PVSPINLOCK:
>              node = ctxt->node;
>              ctxt->node = nodes[i];
>              if ((tmp = virXPathString("string(./@state)", ctxt))) {
> -                if ((def->features[val] = virDomainFeatureStateTypeFromString(tmp)) == -1) {
> +                if ((def->features[val] = virTristateSwitchTypeFromString(tmp)) == -1) {
>                      virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                     _("unknown state attribute '%s' of feature '%s'"),
>                                     tmp, virDomainFeatureTypeToString(val));
> @@ -11851,7 +11814,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>                  }
>                  VIR_FREE(tmp);
>              } else {
> -                def->features[val] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                def->features[val] = VIR_TRISTATE_SWITCH_ON;
>              }
>              ctxt->node = node;
>              break;
> @@ -11862,7 +11825,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>      }
>      VIR_FREE(nodes);
>  
> -    if (def->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_DOMAIN_FEATURE_STATE_ON) {
> +    if (def->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_TRISTATE_SWITCH_ON) {
>          int feature;
>          int value;
>          node = ctxt->node;
> @@ -11891,7 +11854,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>                          goto error;
>                      }
>  
> -                    if ((value = virDomainFeatureStateTypeFromString(tmp)) < 0) {
> +                    if ((value = virTristateSwitchTypeFromString(tmp)) < 0) {
>                          virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                         _("invalid value of state argument "
>                                           "for HyperV Enlightenment feature '%s'"),
> @@ -11912,7 +11875,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>                          goto error;
>                      }
>  
> -                    if ((value = virDomainFeatureStateTypeFromString(tmp)) < 0) {
> +                    if ((value = virTristateSwitchTypeFromString(tmp)) < 0) {
>                          virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                                         _("invalid value of state argument "
>                                           "for HyperV Enlightenment feature '%s'"),
> @@ -11921,7 +11884,7 @@ virDomainDefParseXML(xmlDocPtr xml,
>                      }
>  
>                      VIR_FREE(tmp);
> -                    if (value == VIR_DOMAIN_FEATURE_STATE_ON) {
> +                    if (value == VIR_TRISTATE_SWITCH_ON) {
>                          if (virXPathUInt("string(./@retries)", ctxt,
>                                       &def->hyperv_spinlocks) < 0) {
>                              virReportError(VIR_ERR_XML_ERROR, "%s",
> @@ -13912,8 +13875,8 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
>                             _("State of feature '%s' differs: "
>                               "source: '%s', destination: '%s'"),
>                             virDomainFeatureTypeToString(i),
> -                           virDomainFeatureStateTypeToString(src->features[i]),
> -                           virDomainFeatureStateTypeToString(dst->features[i]));
> +                           virTristateSwitchTypeToString(src->features[i]),
> +                           virTristateSwitchTypeToString(dst->features[i]));
>              return false;
>          }
>      }
> @@ -13923,13 +13886,13 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
>          virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>                         _("State of APIC EOI differs: "
>                           "source: '%s', destination: '%s'"),
> -                       virDomainFeatureStateTypeToString(src->apic_eoi),
> -                       virDomainFeatureStateTypeToString(dst->apic_eoi));
> +                       virTristateSwitchTypeToString(src->apic_eoi),
> +                       virTristateSwitchTypeToString(dst->apic_eoi));
>          return false;
>      }
>  
>      /* hyperv */
> -    if (src->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_DOMAIN_FEATURE_STATE_ON) {
> +    if (src->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_TRISTATE_SWITCH_ON) {
>          for (i = 0; i < VIR_DOMAIN_HYPERV_LAST; i++) {
>              switch ((virDomainHyperv) i) {
>              case VIR_DOMAIN_HYPERV_RELAXED:
> @@ -13940,8 +13903,8 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
>                                       "feature '%s' differs: "
>                                       "source: '%s', destination: '%s'"),
>                                     virDomainHypervTypeToString(i),
> -                                   virDomainFeatureStateTypeToString(src->hyperv_features[i]),
> -                                   virDomainFeatureStateTypeToString(dst->hyperv_features[i]));
> +                                   virTristateSwitchTypeToString(src->hyperv_features[i]),
> +                                   virTristateSwitchTypeToString(dst->hyperv_features[i]));
>                      return false;
>                  }
>  
> @@ -15045,9 +15008,9 @@ virDomainDiskDefFormat(virBufferPtr buf,
>      const char *error_policy = virDomainDiskErrorPolicyTypeToString(def->error_policy);
>      const char *rerror_policy = virDomainDiskErrorPolicyTypeToString(def->rerror_policy);
>      const char *iomode = virDomainDiskIoTypeToString(def->iomode);
> -    const char *ioeventfd = virDomainIoEventFdTypeToString(def->ioeventfd);
> -    const char *event_idx = virDomainVirtioEventIdxTypeToString(def->event_idx);
> -    const char *copy_on_read = virDomainDiskCopyOnReadTypeToString(def->copy_on_read);
> +    const char *ioeventfd = virTristateSwitchTypeToString(def->ioeventfd);
> +    const char *event_idx = virTristateSwitchTypeToString(def->event_idx);
> +    const char *copy_on_read = virTristateSwitchTypeToString(def->copy_on_read);
>      const char *sgio = virDomainDeviceSGIOTypeToString(def->sgio);
>      const char *discard = virDomainDiskDiscardTypeToString(def->discard);
>  
> @@ -15188,9 +15151,9 @@ virDomainDiskDefFormat(virBufferPtr buf,
>          virBufferAsprintf(buf, " tray='%s'",
>                            virDomainDiskTrayTypeToString(def->tray_status));
>      if (def->bus == VIR_DOMAIN_DISK_BUS_USB &&
> -        def->removable != VIR_DOMAIN_FEATURE_STATE_DEFAULT) {
> +        def->removable != VIR_TRISTATE_SWITCH_ABSENT) {
>          virBufferAsprintf(buf, " removable='%s'",
> -                          virDomainFeatureStateTypeToString(def->removable));
> +                          virTristateSwitchTypeToString(def->removable));
>      }
>      virBufferAddLit(buf, "/>\n");
>  
> @@ -15872,11 +15835,11 @@ virDomainNetDefFormat(virBufferPtr buf,
>              }
>              if (def->driver.virtio.ioeventfd) {
>                  virBufferAsprintf(buf, " ioeventfd='%s'",
> -                                  virDomainIoEventFdTypeToString(def->driver.virtio.ioeventfd));
> +                                  virTristateSwitchTypeToString(def->driver.virtio.ioeventfd));
>              }
>              if (def->driver.virtio.event_idx) {
>                  virBufferAsprintf(buf, " event_idx='%s'",
> -                                  virDomainVirtioEventIdxTypeToString(def->driver.virtio.event_idx));
> +                                  virTristateSwitchTypeToString(def->driver.virtio.event_idx));
>              }
>              if (def->driver.virtio.queues)
>                  virBufferAsprintf(buf, " queues='%u'", def->driver.virtio.queues);
> @@ -16912,7 +16875,7 @@ virDomainGraphicsDefFormat(virBufferPtr buf,
>                                virDomainGraphicsSpiceZlibCompressionTypeToString(def->data.spice.zlib));
>          if (def->data.spice.playback)
>              virBufferAsprintf(buf, "<playback compression='%s'/>\n",
> -                              virDomainGraphicsSpicePlaybackCompressionTypeToString(def->data.spice.playback));
> +                              virTristateSwitchTypeToString(def->data.spice.playback));
>          if (def->data.spice.streaming)
>              virBufferAsprintf(buf, "<streaming mode='%s'/>\n",
>                                virDomainGraphicsSpiceStreamingModeTypeToString(def->data.spice.streaming));
> @@ -17232,7 +17195,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>      virBufferAddLit(buf, "<memory");
>      if (def->mem.dump_core)
>          virBufferAsprintf(buf, " dumpCore='%s'",
> -                          virDomainMemDumpTypeToString(def->mem.dump_core));
> +                          virTristateSwitchTypeToString(def->mem.dump_core));
>      virBufferAsprintf(buf, " unit='KiB'>%llu</memory>\n",
>                        def->mem.max_balloon);
>  
> @@ -17560,7 +17523,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>      }
>  
>      for (i = 0; i < VIR_DOMAIN_FEATURE_LAST; i++) {
> -        if (def->features[i] != VIR_DOMAIN_FEATURE_STATE_DEFAULT)
> +        if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT)
>              break;
>      }
>  
> @@ -17584,16 +17547,16 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>              case VIR_DOMAIN_FEATURE_HAP:
>              case VIR_DOMAIN_FEATURE_VIRIDIAN:
>              case VIR_DOMAIN_FEATURE_PRIVNET:
> -                switch ((virDomainFeatureState) def->features[i]) {
> -                case VIR_DOMAIN_FEATURE_STATE_DEFAULT:
> +                switch ((virTristateSwitch) def->features[i]) {
> +                case VIR_TRISTATE_SWITCH_ABSENT:
>                      break;
>  
> -                case VIR_DOMAIN_FEATURE_STATE_ON:
> +                case VIR_TRISTATE_SWITCH_ON:
>                     virBufferAsprintf(buf, "<%s/>\n", name);
>                     break;
>  
> -                case VIR_DOMAIN_FEATURE_STATE_LAST:
> -                case VIR_DOMAIN_FEATURE_STATE_OFF:
> +                case VIR_TRISTATE_SWITCH_LAST:
> +                case VIR_TRISTATE_SWITCH_OFF:
>                     virReportError(VIR_ERR_INTERNAL_ERROR,
>                                   _("Unexpected state of feature '%s'"), name);
>  
> @@ -17604,16 +17567,16 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>                  break;
>  
>              case VIR_DOMAIN_FEATURE_PVSPINLOCK:
> -                switch ((virDomainFeatureState) def->features[i]) {
> -                case VIR_DOMAIN_FEATURE_STATE_LAST:
> -                case VIR_DOMAIN_FEATURE_STATE_DEFAULT:
> +                switch ((virTristateSwitch) def->features[i]) {
> +                case VIR_TRISTATE_SWITCH_LAST:
> +                case VIR_TRISTATE_SWITCH_ABSENT:
>                      break;
>  
> -                case VIR_DOMAIN_FEATURE_STATE_ON:
> +                case VIR_TRISTATE_SWITCH_ON:
>                     virBufferAsprintf(buf, "<%s state='on'/>\n", name);
>                     break;
>  
> -                case VIR_DOMAIN_FEATURE_STATE_OFF:
> +                case VIR_TRISTATE_SWITCH_OFF:
>                     virBufferAsprintf(buf, "<%s state='off'/>\n", name);
>                     break;
>                  }
> @@ -17621,18 +17584,18 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>                  break;
>  
>              case VIR_DOMAIN_FEATURE_APIC:
> -                if (def->features[i] == VIR_DOMAIN_FEATURE_STATE_ON) {
> +                if (def->features[i] == VIR_TRISTATE_SWITCH_ON) {
>                      virBufferAddLit(buf, "<apic");
>                      if (def->apic_eoi) {
>                          virBufferAsprintf(buf, " eoi='%s'",
> -                                          virDomainFeatureStateTypeToString(def->apic_eoi));
> +                                          virTristateSwitchTypeToString(def->apic_eoi));
>                      }
>                      virBufferAddLit(buf, "/>\n");
>                  }
>                  break;
>  
>              case VIR_DOMAIN_FEATURE_HYPERV:
> -                if (def->features[i] != VIR_DOMAIN_FEATURE_STATE_ON)
> +                if (def->features[i] != VIR_TRISTATE_SWITCH_ON)
>                      break;
>  
>                  virBufferAddLit(buf, "<hyperv>\n");
> @@ -17644,7 +17607,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>                          if (def->hyperv_features[j])
>                              virBufferAsprintf(buf, "<%s state='%s'/>\n",
>                                                virDomainHypervTypeToString(j),
> -                                              virDomainFeatureStateTypeToString(
> +                                              virTristateSwitchTypeToString(
>                                                    def->hyperv_features[j]));
>                          break;
>  
> @@ -17653,9 +17616,9 @@ virDomainDefFormatInternal(virDomainDefPtr def,
>                              break;
>  
>                          virBufferAsprintf(buf, "<spinlocks state='%s'",
> -                                          virDomainFeatureStateTypeToString(
> +                                          virTristateSwitchTypeToString(
>                                                def->hyperv_features[j]));
> -                        if (def->hyperv_features[j] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                        if (def->hyperv_features[j] == VIR_TRISTATE_SWITCH_ON)
>                              virBufferAsprintf(buf, " retries='%d'",
>                                                def->hyperv_spinlocks);
>                          virBufferAddLit(buf, "/>\n");
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index 8d2c546..3e364d3 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h

Similar to patch 1/2 - search for various removed enum via cscope/egrep
and replace comment w/ Tristate:

struct _virDomainDiskDef {

...
    int ioeventfd; /* enum virDomainIoEventFd */
    int event_idx; /* enum virDomainVirtioEventIdx */
    int copy_on_read; /* enum virDomainDiskCopyOnRead */
...

struct _virDomainDef {
...
    struct {
...
        int dump_core; /* enum virDomainMemDump */
...
    } mem;
...

struct _virDomainDeviceInfo {
...
    int rombar;         /* enum virDomainPCIRombarMode */
...

I didn't check whether other changed fields now had the Tristate enum
comment...  May as well be thorough though.

Remainder looked good though

ACK w/ comment issues resolved.


John

> @@ -218,14 +218,6 @@ typedef enum {
>      VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST
>  } virDomainDeviceAddressType;
>  
> -typedef enum {
> -    VIR_DOMAIN_PCI_ROMBAR_DEFAULT = 0,
> -    VIR_DOMAIN_PCI_ROMBAR_ON,
> -    VIR_DOMAIN_PCI_ROMBAR_OFF,
> -
> -    VIR_DOMAIN_PCI_ROMBAR_LAST
> -} virDomainPCIRombarMode;
> -
>  typedef struct _virDomainDeviceDriveAddress virDomainDeviceDriveAddress;
>  typedef virDomainDeviceDriveAddress *virDomainDeviceDriveAddressPtr;
>  struct _virDomainDeviceDriveAddress {
> @@ -535,30 +527,6 @@ typedef enum {
>  } virDomainDiskIo;
>  
>  typedef enum {
> -    VIR_DOMAIN_IO_EVENT_FD_DEFAULT = 0,
> -    VIR_DOMAIN_IO_EVENT_FD_ON,
> -    VIR_DOMAIN_IO_EVENT_FD_OFF,
> -
> -    VIR_DOMAIN_IO_EVENT_FD_LAST
> -} virDomainIoEventFd;
> -
> -typedef enum {
> -    VIR_DOMAIN_VIRTIO_EVENT_IDX_DEFAULT = 0,
> -    VIR_DOMAIN_VIRTIO_EVENT_IDX_ON,
> -    VIR_DOMAIN_VIRTIO_EVENT_IDX_OFF,
> -
> -    VIR_DOMAIN_VIRTIO_EVENT_IDX_LAST
> -} virDomainVirtioEventIdx;
> -
> -typedef enum {
> -    VIR_DOMAIN_DISK_COPY_ON_READ_DEFAULT = 0,
> -    VIR_DOMAIN_DISK_COPY_ON_READ_ON,
> -    VIR_DOMAIN_DISK_COPY_ON_READ_OFF,
> -
> -    VIR_DOMAIN_DISK_COPY_ON_READ_LAST
> -} virDomainDiskCopyOnRead;
> -
> -typedef enum {
>      VIR_DOMAIN_STARTUP_POLICY_DEFAULT = 0,
>      VIR_DOMAIN_STARTUP_POLICY_MANDATORY,
>      VIR_DOMAIN_STARTUP_POLICY_REQUISITE,
> @@ -604,7 +572,7 @@ struct _virDomainDiskDef {
>      int bus; /* enum virDomainDiskBus */
>      char *dst;
>      int tray_status; /* enum virDomainDiskTray */
> -    int removable; /* enum virDomainFeatureState */
> +    int removable; /* enum virTristateSwitch */
>  
>      virStorageSourcePtr mirror;
>      bool mirroring;
> @@ -865,8 +833,8 @@ struct _virDomainNetDef {
>          struct {
>              virDomainNetBackendType name; /* which driver backend to use */
>              virDomainNetVirtioTxModeType txmode;
> -            virDomainIoEventFd ioeventfd;
> -            virDomainVirtioEventIdx event_idx;
> +            virTristateSwitch ioeventfd;
> +            virTristateSwitch event_idx;
>              unsigned int queues; /* Multiqueue virtio-net */
>          } virtio;
>      } driver;
> @@ -1312,14 +1280,6 @@ typedef enum {
>  } virDomainGraphicsSpiceZlibCompression;
>  
>  typedef enum {
> -    VIR_DOMAIN_GRAPHICS_SPICE_PLAYBACK_COMPRESSION_DEFAULT = 0,
> -    VIR_DOMAIN_GRAPHICS_SPICE_PLAYBACK_COMPRESSION_ON,
> -    VIR_DOMAIN_GRAPHICS_SPICE_PLAYBACK_COMPRESSION_OFF,
> -
> -    VIR_DOMAIN_GRAPHICS_SPICE_PLAYBACK_COMPRESSION_LAST
> -} virDomainGraphicsSpicePlaybackCompression;
> -
> -typedef enum {
>      VIR_DOMAIN_GRAPHICS_SPICE_MOUSE_MODE_DEFAULT = 0,
>      VIR_DOMAIN_GRAPHICS_SPICE_MOUSE_MODE_SERVER,
>      VIR_DOMAIN_GRAPHICS_SPICE_MOUSE_MODE_CLIENT,
> @@ -1448,14 +1408,6 @@ struct _virDomainRedirFilterDef {
>      virDomainRedirFilterUSBDevDefPtr *usbdevs;
>  };
>  
> -typedef enum {
> -    VIR_DOMAIN_MEM_DUMP_DEFAULT = 0,
> -    VIR_DOMAIN_MEM_DUMP_ON,
> -    VIR_DOMAIN_MEM_DUMP_OFF,
> -
> -    VIR_DOMAIN_MEM_DUMP_LAST,
> -} virDomainMemDump;
> -
>  enum {
>      VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO,
>      VIR_DOMAIN_MEMBALLOON_MODEL_XEN,
> @@ -1509,14 +1461,6 @@ typedef enum {
>  } virDomainFeature;
>  
>  typedef enum {
> -    VIR_DOMAIN_FEATURE_STATE_DEFAULT = 0,
> -    VIR_DOMAIN_FEATURE_STATE_ON,
> -    VIR_DOMAIN_FEATURE_STATE_OFF,
> -
> -    VIR_DOMAIN_FEATURE_STATE_LAST
> -} virDomainFeatureState;
> -
> -typedef enum {
>      VIR_DOMAIN_HYPERV_RELAXED = 0,
>      VIR_DOMAIN_HYPERV_VAPIC,
>      VIR_DOMAIN_HYPERV_SPINLOCKS,
> @@ -1873,9 +1817,9 @@ struct _virDomainDef {
>      virDomainOSDef os;
>      char *emulator;
>      int features[VIR_DOMAIN_FEATURE_LAST];
> -    /* enum virDomainFeatureState */
> +    /* enum virTristateSwitch */
>      int apic_eoi;
> -    /* These options are of type virDomainFeatureState */
> +    /* These options are of type virTristateSwitch */
>      int hyperv_features[VIR_DOMAIN_HYPERV_LAST];
>      unsigned int hyperv_spinlocks;
>  
> @@ -2493,7 +2437,6 @@ VIR_ENUM_DECL(virDomainTaint)
>  VIR_ENUM_DECL(virDomainVirt)
>  VIR_ENUM_DECL(virDomainBoot)
>  VIR_ENUM_DECL(virDomainFeature)
> -VIR_ENUM_DECL(virDomainFeatureState)
>  VIR_ENUM_DECL(virDomainLifecycle)
>  VIR_ENUM_DECL(virDomainLifecycleCrash)
>  VIR_ENUM_DECL(virDomainDevice)
> @@ -2507,9 +2450,6 @@ VIR_ENUM_DECL(virDomainDiskIo)
>  VIR_ENUM_DECL(virDomainDeviceSGIO)
>  VIR_ENUM_DECL(virDomainDiskTray)
>  VIR_ENUM_DECL(virDomainDiskDiscard)
> -VIR_ENUM_DECL(virDomainIoEventFd)
> -VIR_ENUM_DECL(virDomainVirtioEventIdx)
> -VIR_ENUM_DECL(virDomainDiskCopyOnRead)
>  VIR_ENUM_DECL(virDomainController)
>  VIR_ENUM_DECL(virDomainControllerModelPCI)
>  VIR_ENUM_DECL(virDomainControllerModelSCSI)
> @@ -2532,7 +2472,6 @@ VIR_ENUM_DECL(virDomainChrTcpProtocol)
>  VIR_ENUM_DECL(virDomainChrSpicevmc)
>  VIR_ENUM_DECL(virDomainSoundCodec)
>  VIR_ENUM_DECL(virDomainSoundModel)
> -VIR_ENUM_DECL(virDomainMemDump)
>  VIR_ENUM_DECL(virDomainMemballoonModel)
>  VIR_ENUM_DECL(virDomainSmbiosMode)
>  VIR_ENUM_DECL(virDomainWatchdogModel)
> @@ -2541,7 +2480,6 @@ VIR_ENUM_DECL(virDomainVideo)
>  VIR_ENUM_DECL(virDomainHostdevMode)
>  VIR_ENUM_DECL(virDomainHostdevSubsys)
>  VIR_ENUM_DECL(virDomainHostdevCaps)
> -VIR_ENUM_DECL(virDomainPCIRombarMode)
>  VIR_ENUM_DECL(virDomainHub)
>  VIR_ENUM_DECL(virDomainRedirdevBus)
>  VIR_ENUM_DECL(virDomainInput)
> @@ -2554,7 +2492,6 @@ VIR_ENUM_DECL(virDomainGraphicsSpiceChannelMode)
>  VIR_ENUM_DECL(virDomainGraphicsSpiceImageCompression)
>  VIR_ENUM_DECL(virDomainGraphicsSpiceJpegCompression)
>  VIR_ENUM_DECL(virDomainGraphicsSpiceZlibCompression)
> -VIR_ENUM_DECL(virDomainGraphicsSpicePlaybackCompression)
>  VIR_ENUM_DECL(virDomainGraphicsSpiceStreamingMode)
>  VIR_ENUM_DECL(virDomainGraphicsSpiceMouseMode)
>  VIR_ENUM_DECL(virDomainGraphicsVNCSharePolicy)
> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
> index 5e73f51..f0e54ea 100644
> --- a/src/libvirt_private.syms
> +++ b/src/libvirt_private.syms
> @@ -77,8 +77,6 @@ virCPUModeTypeToString;
>  
>  
>  # conf/device_conf.h
> -virDeviceAddressPCIMultiTypeFromString;
> -virDeviceAddressPCIMultiTypeToString;
>  virDevicePCIAddressEqual;
>  virDevicePCIAddressFormat;
>  virDevicePCIAddressIsValid;
> @@ -217,8 +215,6 @@ virDomainDeviceTypeToString;
>  virDomainDiskBusTypeToString;
>  virDomainDiskCacheTypeFromString;
>  virDomainDiskCacheTypeToString;
> -virDomainDiskCopyOnReadTypeFromString;
> -virDomainDiskCopyOnReadTypeToString;
>  virDomainDiskDefAssignAddress;
>  virDomainDiskDefForeachPath;
>  virDomainDiskDefFree;
> @@ -249,8 +245,6 @@ virDomainDiskSetType;
>  virDomainDiskSourceIsBlockType;
>  virDomainEmulatorPinAdd;
>  virDomainEmulatorPinDel;
> -virDomainFeatureStateTypeFromString;
> -virDomainFeatureStateTypeToString;
>  virDomainFSDefFree;
>  virDomainFSIndexByName;
>  virDomainFSInsert;
> @@ -279,8 +273,6 @@ virDomainGraphicsSpiceJpegCompressionTypeFromString;
>  virDomainGraphicsSpiceJpegCompressionTypeToString;
>  virDomainGraphicsSpiceMouseModeTypeFromString;
>  virDomainGraphicsSpiceMouseModeTypeToString;
> -virDomainGraphicsSpicePlaybackCompressionTypeFromString;
> -virDomainGraphicsSpicePlaybackCompressionTypeToString;
>  virDomainGraphicsSpiceStreamingModeTypeFromString;
>  virDomainGraphicsSpiceStreamingModeTypeToString;
>  virDomainGraphicsSpiceZlibCompressionTypeFromString;
> @@ -305,8 +297,6 @@ virDomainHubTypeToString;
>  virDomainHypervTypeFromString;
>  virDomainHypervTypeToString;
>  virDomainInputDefFree;
> -virDomainIoEventFdTypeFromString;
> -virDomainIoEventFdTypeToString;
>  virDomainLeaseDefFree;
>  virDomainLeaseIndex;
>  virDomainLeaseInsert;
> @@ -323,8 +313,6 @@ virDomainLockFailureTypeFromString;
>  virDomainLockFailureTypeToString;
>  virDomainMemballoonModelTypeFromString;
>  virDomainMemballoonModelTypeToString;
> -virDomainMemDumpTypeFromString;
> -virDomainMemDumpTypeToString;
>  virDomainNetDefFormat;
>  virDomainNetDefFree;
>  virDomainNetFind;
> @@ -369,8 +357,6 @@ virDomainObjSetState;
>  virDomainObjTaint;
>  virDomainPausedReasonTypeFromString;
>  virDomainPausedReasonTypeToString;
> -virDomainPCIRombarModeTypeFromString;
> -virDomainPCIRombarModeTypeToString;
>  virDomainPMSuspendedReasonTypeFromString;
>  virDomainPMSuspendedReasonTypeToString;
>  virDomainRedirdevBusTypeFromString;
> @@ -430,8 +416,6 @@ virDomainVideoDefaultType;
>  virDomainVideoDefFree;
>  virDomainVideoTypeFromString;
>  virDomainVideoTypeToString;
> -virDomainVirtioEventIdxTypeFromString;
> -virDomainVirtioEventIdxTypeToString;
>  virDomainVirtTypeFromString;
>  virDomainVirtTypeToString;
>  virDomainWatchdogActionTypeFromString;
> @@ -2132,6 +2116,8 @@ virSetUIDGIDWithCaps;
>  virStrIsPrint;
>  virTristateBoolTypeFromString;
>  virTristateBoolTypeToString;
> +virTristateSwitchTypeFromString;
> +virTristateSwitchTypeToString;
>  virUpdateSelfLastChanged;
>  virValidateWWN;
>  
> diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
> index a39dc4f..02cb79e 100644
> --- a/src/libxl/libxl_conf.c
> +++ b/src/libxl/libxl_conf.c
> @@ -612,13 +612,13 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
>  
>          libxl_defbool_set(&b_info->u.hvm.pae,
>                            def->features[VIR_DOMAIN_FEATURE_PAE] ==
> -                          VIR_DOMAIN_FEATURE_STATE_ON);
> +                          VIR_TRISTATE_SWITCH_ON);
>          libxl_defbool_set(&b_info->u.hvm.apic,
>                            def->features[VIR_DOMAIN_FEATURE_APIC] ==
> -                          VIR_DOMAIN_FEATURE_STATE_ON);
> +                          VIR_TRISTATE_SWITCH_ON);
>          libxl_defbool_set(&b_info->u.hvm.acpi,
>                            def->features[VIR_DOMAIN_FEATURE_ACPI] ==
> -                          VIR_DOMAIN_FEATURE_STATE_ON);
> +                          VIR_TRISTATE_SWITCH_ON);
>          for (i = 0; i < def->clock.ntimers; i++) {
>              if (def->clock.timers[i]->name == VIR_DOMAIN_TIMER_NAME_HPET &&
>                  def->clock.timers[i]->present == 1) {
> diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
> index 4d89677..3e01f17 100644
> --- a/src/lxc/lxc_container.c
> +++ b/src/lxc/lxc_container.c
> @@ -1867,7 +1867,7 @@ static int lxcContainerChild(void *data)
>  
>      /* rename and enable interfaces */
>      if (lxcContainerRenameAndEnableInterfaces(vmDef->features[VIR_DOMAIN_FEATURE_PRIVNET] ==
> -                                              VIR_DOMAIN_FEATURE_STATE_ON,
> +                                              VIR_TRISTATE_SWITCH_ON,
>                                                argv->nveths,
>                                                argv->veths) < 0) {
>          goto cleanup;
> @@ -1957,7 +1957,7 @@ lxcNeedNetworkNamespace(virDomainDefPtr def)
>      size_t i;
>      if (def->nets != NULL)
>          return true;
> -    if (def->features[VIR_DOMAIN_FEATURE_PRIVNET] == VIR_DOMAIN_FEATURE_STATE_ON)
> +    if (def->features[VIR_DOMAIN_FEATURE_PRIVNET] == VIR_TRISTATE_SWITCH_ON)
>          return true;
>      for (i = 0; i < def->nhostdevs; i++) {
>          if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES &&
> diff --git a/src/lxc/lxc_native.c b/src/lxc/lxc_native.c
> index f4c4556..d5c641f 100644
> --- a/src/lxc/lxc_native.c
> +++ b/src/lxc/lxc_native.c
> @@ -553,7 +553,7 @@ lxcConvertNetworkSettings(virDomainDefPtr def, virConfPtr properties)
>  
>      if (data.networks == 0 && data.privnet) {
>          /* When no network type is provided LXC only adds loopback */
> -        def->features[VIR_DOMAIN_FEATURE_PRIVNET] = VIR_DOMAIN_FEATURE_STATE_ON;
> +        def->features[VIR_DOMAIN_FEATURE_PRIVNET] = VIR_TRISTATE_SWITCH_ON;
>      }
>  
>      return 0;
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index bde3af1..352a1a2 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -1434,7 +1434,7 @@ qemuCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED,
>      }
>  
>      entireSlot = (addr->function == 0 &&
> -                  addr->multi != VIR_DEVICE_ADDRESS_PCI_MULTI_ON);
> +                  addr->multi != VIR_TRISTATE_SWITCH_ON);
>  
>      if (virDomainPCIAddressReserveAddr(addrs, addr, flags,
>                                         entireSlot, true) < 0)
> @@ -2141,7 +2141,7 @@ qemuAssignDevicePCISlots(virDomainDefPtr def,
>                  break;
>              case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI1:
>                  addr.function = 0;
> -                addr.multi = VIR_DEVICE_ADDRESS_PCI_MULTI_ON;
> +                addr.multi = VIR_TRISTATE_SWITCH_ON;
>                  break;
>              case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI2:
>                  addr.function = 1;
> @@ -2346,7 +2346,7 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
>                                   "are supported with this QEMU binary"));
>                  goto cleanup;
>              }
> -            if (info->addr.pci.multi == VIR_DEVICE_ADDRESS_PCI_MULTI_ON) {
> +            if (info->addr.pci.multi == VIR_TRISTATE_SWITCH_ON) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                                 _("'multifunction=on' is not supported with "
>                                   "this QEMU binary"));
> @@ -2378,9 +2378,9 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
>                  virBufferAddLit(buf, ",bus=pci");
>              }
>          }
> -        if (info->addr.pci.multi == VIR_DEVICE_ADDRESS_PCI_MULTI_ON)
> +        if (info->addr.pci.multi == VIR_TRISTATE_SWITCH_ON)
>              virBufferAddLit(buf, ",multifunction=on");
> -        else if (info->addr.pci.multi == VIR_DEVICE_ADDRESS_PCI_MULTI_OFF)
> +        else if (info->addr.pci.multi == VIR_TRISTATE_SWITCH_OFF)
>              virBufferAddLit(buf, ",multifunction=off");
>          virBufferAsprintf(buf, ",addr=0x%x", info->addr.pci.slot);
>          if (info->addr.pci.function != 0)
> @@ -2424,10 +2424,10 @@ qemuBuildRomStr(virBufferPtr buf,
>          }
>  
>          switch (info->rombar) {
> -        case VIR_DOMAIN_PCI_ROMBAR_OFF:
> +        case VIR_TRISTATE_SWITCH_OFF:
>              virBufferAddLit(buf, ",rombar=0");
>              break;
> -        case VIR_DOMAIN_PCI_ROMBAR_ON:
> +        case VIR_TRISTATE_SWITCH_ON:
>              virBufferAddLit(buf, ",rombar=1");
>              break;
>          default:
> @@ -2441,12 +2441,12 @@ qemuBuildRomStr(virBufferPtr buf,
>  
>  static int
>  qemuBuildIoEventFdStr(virBufferPtr buf,
> -                      virDomainIoEventFd use,
> +                      virTristateSwitch use,
>                        virQEMUCapsPtr qemuCaps)
>  {
>      if (use && virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_IOEVENTFD))
>          virBufferAsprintf(buf, ",ioeventfd=%s",
> -                          virDomainIoEventFdTypeToString(use));
> +                          virTristateSwitchTypeToString(use));
>      return 0;
>  }
>  
> @@ -3495,7 +3495,7 @@ qemuBuildDriveStr(virConnectPtr conn,
>      if (disk->copy_on_read) {
>          if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DRIVE_COPY_ON_READ)) {
>              virBufferAsprintf(&opt, ",copy-on-read=%s",
> -                              virDomainDiskCopyOnReadTypeToString(disk->copy_on_read));
> +                              virTristateSwitchTypeToString(disk->copy_on_read));
>          } else {
>              virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                             _("copy_on_read is not supported by this QEMU binary"));
> @@ -3862,7 +3862,7 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
>          if (disk->event_idx &&
>              virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_EVENT_IDX)) {
>              virBufferAsprintf(&opt, ",event_idx=%s",
> -                              virDomainVirtioEventIdxTypeToString(disk->event_idx));
> +                              virTristateSwitchTypeToString(disk->event_idx));
>          }
>          if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_SCSI)) {
>              /* if sg_io is true but the scsi option isn't supported,
> @@ -3921,12 +3921,12 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
>  
>      if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
>          if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_STORAGE_REMOVABLE)) {
> -            if (disk->removable == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (disk->removable == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&opt, ",removable=on");
>              else
>                  virBufferAddLit(&opt, ",removable=off");
>          } else {
> -            if (disk->removable != VIR_DOMAIN_FEATURE_STATE_DEFAULT) {
> +            if (disk->removable != VIR_TRISTATE_SWITCH_ABSENT) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                                 _("This QEMU doesn't support setting the "
>                                   "removable flag of USB storage devices"));
> @@ -4371,7 +4371,7 @@ qemuBuildNicDevStr(virDomainDefPtr def,
>          if (net->driver.virtio.event_idx &&
>              virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_NET_EVENT_IDX)) {
>              virBufferAsprintf(&buf, ",event_idx=%s",
> -                              virDomainVirtioEventIdxTypeToString(net->driver.virtio.event_idx));
> +                              virTristateSwitchTypeToString(net->driver.virtio.event_idx));
>          }
>      }
>      if (usingVirtio && vhostfdSize > 1) {
> @@ -6115,7 +6115,7 @@ qemuBuildCpuArgStr(virQEMUDriverPtr driver,
>  
>      if (def->apic_eoi) {
>          char sign;
> -        if (def->apic_eoi == VIR_DOMAIN_FEATURE_STATE_ON)
> +        if (def->apic_eoi == VIR_TRISTATE_SWITCH_ON)
>              sign = '+';
>          else
>              sign = '-';
> @@ -6128,7 +6128,7 @@ qemuBuildCpuArgStr(virQEMUDriverPtr driver,
>  
>      if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK]) {
>          char sign;
> -        if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK] == VIR_DOMAIN_FEATURE_STATE_ON)
> +        if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK] == VIR_TRISTATE_SWITCH_ON)
>              sign = '+';
>          else
>              sign = '-';
> @@ -6139,7 +6139,7 @@ qemuBuildCpuArgStr(virQEMUDriverPtr driver,
>          have_cpu = true;
>      }
>  
> -    if (def->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_DOMAIN_FEATURE_STATE_ON) {
> +    if (def->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_TRISTATE_SWITCH_ON) {
>          if (!have_cpu) {
>              virBufferAdd(&buf, default_model, -1);
>              have_cpu = true;
> @@ -6149,13 +6149,13 @@ qemuBuildCpuArgStr(virQEMUDriverPtr driver,
>              switch ((virDomainHyperv) i) {
>              case VIR_DOMAIN_HYPERV_RELAXED:
>              case VIR_DOMAIN_HYPERV_VAPIC:
> -                if (def->hyperv_features[i] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                if (def->hyperv_features[i] == VIR_TRISTATE_SWITCH_ON)
>                      virBufferAsprintf(&buf, ",hv_%s",
>                                        virDomainHypervTypeToString(i));
>                  break;
>  
>              case VIR_DOMAIN_HYPERV_SPINLOCKS:
> -                if (def->hyperv_features[i] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                if (def->hyperv_features[i] == VIR_TRISTATE_SWITCH_ON)
>                      virBufferAsprintf(&buf, ",hv_spinlocks=0x%x",
>                                        def->hyperv_spinlocks);
>                  break;
> @@ -6312,7 +6312,7 @@ qemuBuildMachineArgStr(virCommandPtr cmd,
>              }
>  
>              virBufferAsprintf(&buf, ",dump-guest-core=%s",
> -                              virDomainMemDumpTypeToString(def->mem.dump_core));
> +                              virTristateSwitchTypeToString(def->mem.dump_core));
>          }
>  
>          if (def->mem.nosharepages) {
> @@ -6750,7 +6750,7 @@ qemuBuildGraphicsSPICECommandLine(virQEMUDriverConfigPtr cfg,
>                            virDomainGraphicsSpiceZlibCompressionTypeToString(graphics->data.spice.zlib));
>      if (graphics->data.spice.playback)
>          virBufferAsprintf(&opt, ",playback-compression=%s",
> -                          virDomainGraphicsSpicePlaybackCompressionTypeToString(graphics->data.spice.playback));
> +                          virTristateSwitchTypeToString(graphics->data.spice.playback));
>      if (graphics->data.spice.streaming)
>          virBufferAsprintf(&opt, ",streaming-video=%s",
>                            virDomainGraphicsSpiceStreamingModeTypeToString(graphics->data.spice.streaming));
> @@ -7543,7 +7543,7 @@ qemuBuildCommandLine(virConnectPtr conn,
>      }
>  
>      if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NO_ACPI)) {
> -        if (def->features[VIR_DOMAIN_FEATURE_ACPI] != VIR_DOMAIN_FEATURE_STATE_ON)
> +        if (def->features[VIR_DOMAIN_FEATURE_ACPI] != VIR_TRISTATE_SWITCH_ON)
>              virCommandAddArg(cmd, "-no-acpi");
>      }
>  
> @@ -10347,9 +10347,9 @@ qemuParseCommandLineCPU(virDomainDefPtr dom,
>                  }
>              } else if (STREQ(feature, "kvm_pv_eoi")) {
>                  if (policy == VIR_CPU_FEATURE_REQUIRE)
> -                    dom->apic_eoi = VIR_DOMAIN_FEATURE_STATE_ON;
> +                    dom->apic_eoi = VIR_TRISTATE_SWITCH_ON;
>                  else
> -                    dom->apic_eoi = VIR_DOMAIN_FEATURE_STATE_OFF;
> +                    dom->apic_eoi = VIR_TRISTATE_SWITCH_OFF;
>              } else {
>                  if (!cpu) {
>                      if (!(cpu = qemuInitGuestCPU(dom)))
> @@ -10379,7 +10379,7 @@ qemuParseCommandLineCPU(virDomainDefPtr dom,
>              if (*feature == '\0')
>                  goto syntax;
>  
> -            dom->features[VIR_DOMAIN_FEATURE_HYPERV] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            dom->features[VIR_DOMAIN_FEATURE_HYPERV] = VIR_TRISTATE_SWITCH_ON;
>  
>              if ((f = virDomainHypervTypeFromString(feature)) < 0) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> @@ -10397,11 +10397,11 @@ qemuParseCommandLineCPU(virDomainDefPtr dom,
>                                       "have a value"), feature);
>                      goto cleanup;
>                  }
> -                dom->hyperv_features[f] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                dom->hyperv_features[f] = VIR_TRISTATE_SWITCH_ON;
>                  break;
>  
>              case VIR_DOMAIN_HYPERV_SPINLOCKS:
> -                dom->hyperv_features[f] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                dom->hyperv_features[f] = VIR_TRISTATE_SWITCH_ON;
>                  if (!value) {
>                      virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                                     _("missing HyperV spinlock retry count"));
> @@ -10634,7 +10634,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
>              goto error;
>          if (strstr(path, "kvm")) {
>              def->virtType = VIR_DOMAIN_VIRT_KVM;
> -            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON;
>          }
>      }
>  
> @@ -10647,7 +10647,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
>  
>      if ((def->os.arch == VIR_ARCH_I686) ||
>          (def->os.arch == VIR_ARCH_X86_64))
> -        def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_DOMAIN_FEATURE_STATE_ON;
> +        def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ON;
>  
>  #define WANT_VALUE()                                                   \
>      const char *val = progargv[++i];                                   \
> @@ -10953,7 +10953,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
>              if (VIR_APPEND_ELEMENT(def->disks, def->ndisks, disk) < 0)
>                  goto error;
>          } else if (STREQ(arg, "-no-acpi")) {
> -            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_DOMAIN_FEATURE_STATE_DEFAULT;
> +            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ABSENT;
>          } else if (STREQ(arg, "-no-reboot")) {
>              def->onReboot = VIR_DOMAIN_LIFECYCLE_DESTROY;
>          } else if (STREQ(arg, "-no-kvm")) {
> @@ -11065,14 +11065,14 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
>              while ((param = list[j++])) {
>                  if (STRPREFIX(param, "dump-guest-core=")) {
>                      param += strlen("dump-guest-core=");
> -                    def->mem.dump_core = virDomainMemDumpTypeFromString(param);
> +                    def->mem.dump_core = virTristateSwitchTypeFromString(param);
>                      if (def->mem.dump_core <= 0)
> -                        def->mem.dump_core = VIR_DOMAIN_MEM_DUMP_DEFAULT;
> +                        def->mem.dump_core = VIR_TRISTATE_SWITCH_ABSENT;
>                  } else if (STRPREFIX(param, "mem-merge=off")) {
>                      def->mem.nosharepages = true;
>                  } else if (STRPREFIX(param, "accel=kvm")) {
>                      def->virtType = VIR_DOMAIN_VIRT_KVM;
> -                    def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                    def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON;
>                  }
>              }
>              virStringFreeList(list);
> @@ -11145,7 +11145,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
>                      disk->src->type = VIR_STORAGE_TYPE_FILE;
>                  disk->device = VIR_DOMAIN_DISK_DEVICE_DISK;
>                  disk->bus = VIR_DOMAIN_DISK_BUS_USB;
> -                disk->removable = VIR_DOMAIN_FEATURE_STATE_DEFAULT;
> +                disk->removable = VIR_TRISTATE_SWITCH_ABSENT;
>                  if (VIR_STRDUP(disk->dst, "sda") < 0)
>                      goto error;
>                  if (VIR_APPEND_ELEMENT(def->disks, def->ndisks, disk) < 0)
> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> index ccc571b..bc22a40 100644
> --- a/src/qemu/qemu_process.c
> +++ b/src/qemu/qemu_process.c
> @@ -3617,7 +3617,7 @@ qemuProcessVerifyGuestCPU(virQEMUDriverPtr driver, virDomainObjPtr vm)
>              goto cleanup;
>          }
>  
> -        if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK] == VIR_DOMAIN_FEATURE_STATE_ON) {
> +        if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK] == VIR_TRISTATE_SWITCH_ON) {
>              if (!cpuHasFeature(guestcpu, VIR_CPU_x86_KVM_PV_UNHALT)) {
>                  virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                                 _("host doesn't support paravirtual spinlocks"));
> diff --git a/src/util/virutil.c b/src/util/virutil.c
> index 305c40c..4eb4682 100644
> --- a/src/util/virutil.c
> +++ b/src/util/virutil.c
> @@ -97,6 +97,12 @@ VIR_ENUM_IMPL(virTristateBool, VIR_TRISTATE_BOOL_LAST,
>                "yes",
>                "no")
>  
> +VIR_ENUM_IMPL(virTristateSwitch, VIR_TRISTATE_SWITCH_LAST,
> +              "default",
> +              "on",
> +              "off")
> +
> +
>  #ifndef WIN32
>  
>  int virSetInherit(int fd, bool inherit)
> diff --git a/src/util/virutil.h b/src/util/virutil.h
> index a06b9a5..504e13e 100644
> --- a/src/util/virutil.h
> +++ b/src/util/virutil.h
> @@ -212,6 +212,16 @@ typedef enum {
>      VIR_TRISTATE_BOOL_LAST
>  } virTristateBool;
>  
> +typedef enum {
> +    VIR_TRISTATE_SWITCH_ABSENT = 0,
> +    VIR_TRISTATE_SWITCH_ON,
> +    VIR_TRISTATE_SWITCH_OFF,
> +
> +    VIR_TRISTATE_SWITCH_LAST
> +} virTristateSwitch;
> +
> +
>  VIR_ENUM_DECL(virTristateBool)
> +VIR_ENUM_DECL(virTristateSwitch)
>  
>  #endif /* __VIR_UTIL_H__ */
> diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
> index fa5020f..84ab501 100644
> --- a/src/vbox/vbox_tmpl.c
> +++ b/src/vbox/vbox_tmpl.c
> @@ -2516,17 +2516,17 @@ static char *vboxDomainGetXMLDesc(virDomainPtr dom, unsigned int flags) {
>              machine->vtbl->GetCPUProperty(machine, CPUPropertyType_PAE, &PAEEnabled);
>  #endif
>              if (PAEEnabled)
> -                def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON;
>  
>              machine->vtbl->GetBIOSSettings(machine, &bios);
>              if (bios) {
>                  bios->vtbl->GetACPIEnabled(bios, &ACPIEnabled);
>                  if (ACPIEnabled)
> -                    def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                    def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ON;
>  
>                  bios->vtbl->GetIOAPICEnabled(bios, &IOAPICEnabled);
>                  if (IOAPICEnabled)
> -                    def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_DOMAIN_FEATURE_STATE_ON;
> +                    def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_TRISTATE_SWITCH_ON;
>  
>                  VBOX_RELEASE(bios);
>              }
> @@ -5222,20 +5222,20 @@ static virDomainPtr vboxDomainDefineXML(virConnectPtr conn, const char *xml)
>  #if VBOX_API_VERSION < 3001000
>      rc = machine->vtbl->SetPAEEnabled(machine,
>                                        def->features[VIR_DOMAIN_FEATURE_PAE] ==
> -                                      VIR_DOMAIN_FEATURE_STATE_ON);
> +                                      VIR_TRISTATE_SWITCH_ON);
>  #elif VBOX_API_VERSION == 3001000
>      rc = machine->vtbl->SetCpuProperty(machine, CpuPropertyType_PAE,
>                                         def->features[VIR_DOMAIN_FEATURE_PAE] ==
> -                                       VIR_DOMAIN_FEATURE_STATE_ON);
> +                                       VIR_TRISTATE_SWITCH_ON);
>  #elif VBOX_API_VERSION >= 3002000
>      rc = machine->vtbl->SetCPUProperty(machine, CPUPropertyType_PAE,
>                                         def->features[VIR_DOMAIN_FEATURE_PAE] ==
> -                                       VIR_DOMAIN_FEATURE_STATE_ON);
> +                                       VIR_TRISTATE_SWITCH_ON);
>  #endif
>      if (NS_FAILED(rc)) {
>          virReportError(VIR_ERR_INTERNAL_ERROR,
>                         _("could not change PAE status to: %s, rc=%08x"),
> -                       (def->features[VIR_DOMAIN_FEATURE_PAE] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                       (def->features[VIR_DOMAIN_FEATURE_PAE] == VIR_TRISTATE_SWITCH_ON)
>                         ? _("Enabled") : _("Disabled"), (unsigned)rc);
>      }
>  
> @@ -5243,20 +5243,20 @@ static virDomainPtr vboxDomainDefineXML(virConnectPtr conn, const char *xml)
>      if (bios) {
>          rc = bios->vtbl->SetACPIEnabled(bios,
>                                          def->features[VIR_DOMAIN_FEATURE_ACPI] ==
> -                                        VIR_DOMAIN_FEATURE_STATE_ON);
> +                                        VIR_TRISTATE_SWITCH_ON);
>          if (NS_FAILED(rc)) {
>              virReportError(VIR_ERR_INTERNAL_ERROR,
>                             _("could not change ACPI status to: %s, rc=%08x"),
> -                           (def->features[VIR_DOMAIN_FEATURE_ACPI] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                           (def->features[VIR_DOMAIN_FEATURE_ACPI] == VIR_TRISTATE_SWITCH_ON)
>                             ? _("Enabled") : _("Disabled"), (unsigned)rc);
>          }
>          rc = bios->vtbl->SetIOAPICEnabled(bios,
>                                            def->features[VIR_DOMAIN_FEATURE_APIC] ==
> -                                          VIR_DOMAIN_FEATURE_STATE_ON);
> +                                          VIR_TRISTATE_SWITCH_ON);
>          if (NS_FAILED(rc)) {
>              virReportError(VIR_ERR_INTERNAL_ERROR,
>                             _("could not change APIC status to: %s, rc=%08x"),
> -                           (def->features[VIR_DOMAIN_FEATURE_APIC] == VIR_DOMAIN_FEATURE_STATE_ON)
> +                           (def->features[VIR_DOMAIN_FEATURE_APIC] == VIR_TRISTATE_SWITCH_ON)
>                             ? _("Enabled") : _("Disabled"), (unsigned)rc);
>          }
>          VBOX_RELEASE(bios);
> diff --git a/src/xenxs/xen_sxpr.c b/src/xenxs/xen_sxpr.c
> index 9e59804..007353c 100644
> --- a/src/xenxs/xen_sxpr.c
> +++ b/src/xenxs/xen_sxpr.c
> @@ -1201,15 +1201,15 @@ xenParseSxpr(const struct sexpr *root,
>  
>      if (hvm) {
>          if (sexpr_int(root, "domain/image/hvm/acpi"))
> -            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ON;
>          if (sexpr_int(root, "domain/image/hvm/apic"))
> -            def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_TRISTATE_SWITCH_ON;
>          if (sexpr_int(root, "domain/image/hvm/pae"))
> -            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON;
>          if (sexpr_int(root, "domain/image/hvm/hap"))
> -            def->features[VIR_DOMAIN_FEATURE_HAP] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_HAP] = VIR_TRISTATE_SWITCH_ON;
>          if (sexpr_int(root, "domain/image/hvm/viridian"))
> -            def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] = VIR_TRISTATE_SWITCH_ON;
>      }
>  
>      /* 12aaf4a2486b (3.0.3) added a second low-priority 'localtime' setting */
> @@ -2338,15 +2338,15 @@ xenFormatSxpr(virConnectPtr conn,
>                  }
>              }
>  
> -            if (def->features[VIR_DOMAIN_FEATURE_ACPI] == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (def->features[VIR_DOMAIN_FEATURE_ACPI] == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&buf, "(acpi 1)");
> -            if (def->features[VIR_DOMAIN_FEATURE_APIC] == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (def->features[VIR_DOMAIN_FEATURE_APIC] == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&buf, "(apic 1)");
> -            if (def->features[VIR_DOMAIN_FEATURE_PAE] == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (def->features[VIR_DOMAIN_FEATURE_PAE] == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&buf, "(pae 1)");
> -            if (def->features[VIR_DOMAIN_FEATURE_HAP] == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (def->features[VIR_DOMAIN_FEATURE_HAP] == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&buf, "(hap 1)");
> -            if (def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] == VIR_DOMAIN_FEATURE_STATE_ON)
> +            if (def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] == VIR_TRISTATE_SWITCH_ON)
>                  virBufferAddLit(&buf, "(viridian 1)");
>  
>              virBufferAddLit(&buf, "(usb 1)");
> diff --git a/src/xenxs/xen_xm.c b/src/xenxs/xen_xm.c
> index 25a042d..470bb78 100644
> --- a/src/xenxs/xen_xm.c
> +++ b/src/xenxs/xen_xm.c
> @@ -418,23 +418,23 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
>          if (xenXMConfigGetBool(conf, "pae", &val, 0) < 0)
>              goto cleanup;
>          else if (val)
> -            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON;
>          if (xenXMConfigGetBool(conf, "acpi", &val, 0) < 0)
>              goto cleanup;
>          else if (val)
> -            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ON;
>          if (xenXMConfigGetBool(conf, "apic", &val, 0) < 0)
>              goto cleanup;
>          else if (val)
> -            def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_APIC] = VIR_TRISTATE_SWITCH_ON;
>          if (xenXMConfigGetBool(conf, "hap", &val, 0) < 0)
>              goto cleanup;
>          else if (val)
> -            def->features[VIR_DOMAIN_FEATURE_HAP] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_HAP] = VIR_TRISTATE_SWITCH_ON;
>          if (xenXMConfigGetBool(conf, "viridian", &val, 0) < 0)
>              goto cleanup;
>          else if (val)
> -            def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] = VIR_DOMAIN_FEATURE_STATE_ON;
> +            def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] = VIR_TRISTATE_SWITCH_ON;
>  
>          if (xenXMConfigGetBool(conf, "hpet", &val, -1) < 0)
>              goto cleanup;
> @@ -1589,28 +1589,28 @@ virConfPtr xenFormatXM(virConnectPtr conn,
>  
>          if (xenXMConfigSetInt(conf, "pae",
>                                (def->features[VIR_DOMAIN_FEATURE_PAE] ==
> -                               VIR_DOMAIN_FEATURE_STATE_ON) ? 1 : 0) < 0)
> +                               VIR_TRISTATE_SWITCH_ON) ? 1 : 0) < 0)
>              goto cleanup;
>  
>          if (xenXMConfigSetInt(conf, "acpi",
>                                (def->features[VIR_DOMAIN_FEATURE_ACPI] ==
> -                               VIR_DOMAIN_FEATURE_STATE_ON) ? 1 : 0) < 0)
> +                               VIR_TRISTATE_SWITCH_ON) ? 1 : 0) < 0)
>              goto cleanup;
>  
>          if (xenXMConfigSetInt(conf, "apic",
>                                (def->features[VIR_DOMAIN_FEATURE_APIC] ==
> -                               VIR_DOMAIN_FEATURE_STATE_ON) ? 1 : 0) < 0)
> +                               VIR_TRISTATE_SWITCH_ON) ? 1 : 0) < 0)
>              goto cleanup;
>  
>          if (xendConfigVersion >= XEND_CONFIG_VERSION_3_0_4) {
>              if (xenXMConfigSetInt(conf, "hap",
>                                    (def->features[VIR_DOMAIN_FEATURE_HAP] ==
> -                                   VIR_DOMAIN_FEATURE_STATE_ON) ? 1 : 0) < 0)
> +                                   VIR_TRISTATE_SWITCH_ON) ? 1 : 0) < 0)
>                  goto cleanup;
>  
>              if (xenXMConfigSetInt(conf, "viridian",
>                                    (def->features[VIR_DOMAIN_FEATURE_VIRIDIAN] ==
> -                                   VIR_DOMAIN_FEATURE_STATE_ON) ? 1 : 0) < 0)
> +                                   VIR_TRISTATE_SWITCH_ON) ? 1 : 0) < 0)
>                  goto cleanup;
>          }
>  
> 

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