generic ephemeral volumes: document graduation to GA

Author: pohly

content/en/docs/concepts/storage/ephemeral-volumes.md

@@ -130,10 +130,7 @@ As a cluster administrator, you can use a [PodSecurityPolicy](/docs/concepts/pol
 
 ### Generic ephemeral volumes
 
-{{< feature-state for_k8s_version="v1.21" state="beta" >}}
-
-This feature requires the `GenericEphemeralVolume` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) to be
-enabled. Because this is a beta feature, it is enabled by default.
+{{< feature-state for_k8s_version="v1.23" state="stable" >}}
 
 Generic ephemeral volumes are similar to `emptyDir` volumes in the
 sense that they provide a per-pod directory for scratch data that is
@@ -245,7 +242,6 @@ PVCs indirectly if they can create Pods, even if they do not have
 permission to create PVCs directly. Cluster administrators must be
 aware of this. If this does not fit their security model, they have
 two choices:
-- Explicitly disable the feature through the feature gate.
 - Use a [Pod Security
   Policy](/docs/concepts/policy/pod-security-policy/) where the
   `volumes` list does not contain the `ephemeral` volume type
@@ -274,4 +270,3 @@ See [local ephemeral storage](/docs/concepts/configuration/manage-resources-cont
 
 - For more information on the design, see the
 [Generic ephemeral inline volumes KEP](https://github.com/kubernetes/enhancements/blob/master/keps/sig-storage/1698-generic-ephemeral-volumes/README.md).
-- For more information on further development of this feature, see the [enhancement tracking issue #1698](https://github.com/kubernetes/enhancements/issues/1698).

content/en/docs/reference/command-line-tools-reference/feature-gates.md

@@ -117,8 +117,6 @@ different Kubernetes components.
 | `ExpandPersistentVolumes` | `false` | Alpha | 1.8 | 1.10 |
 | `ExpandPersistentVolumes` | `true` | Beta | 1.11 | |
 | `ExperimentalHostUserNamespaceDefaulting` | `false` | Beta | 1.5 | |
-| `GenericEphemeralVolume` | `false` | Alpha | 1.19 | 1.20 |
-| `GenericEphemeralVolume` | `true` | Beta | 1.21 | |
 | `GracefulNodeShutdown` | `false` | Alpha | 1.20 | 1.20 |
 | `GracefulNodeShutdown` | `true` | Beta | 1.21 | |
 | `HPAContainerMetrics` | `false` | Alpha | 1.20 | |
@@ -309,6 +307,9 @@ different Kubernetes components.
 | `ExternalPolicyForExternalIP` | `true` | GA | 1.18 | - |
 | `GCERegionalPersistentDisk` | `true` | Beta | 1.10 | 1.12 |
 | `GCERegionalPersistentDisk` | `true` | GA | 1.13 | - |
+| `GenericEphemeralVolume` | `false` | Alpha | 1.19 | 1.20 |
+| `GenericEphemeralVolume` | `true` | Beta | 1.21 | 1.22 |
+| `GenericEphemeralVolume` | `true` | GA | 1.23 | - |
 | `HugePageStorageMediumSize` | `false` | Alpha | 1.18 | 1.18 |
 | `HugePageStorageMediumSize` | `true` | Beta | 1.19 | 1.21 |
 | `HugePageStorageMediumSize` | `true` | GA | 1.22 | - |