diff --git a/pkg/apis/core/v1/zz_generated.validations.go b/pkg/apis/core/v1/zz_generated.validations.go
index 7e3701c1ae4..94193833128 100644
--- a/pkg/apis/core/v1/zz_generated.validations.go
+++ b/pkg/apis/core/v1/zz_generated.validations.go
@@ -38,20 +38,17 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *runtime.Scheme) error {
-	scheme.AddValidationFunc((*corev1.ReplicationController)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*corev1.ReplicationController)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_ReplicationController(ctx, op, nil /* fldPath */, obj.(*corev1.ReplicationController), safe.Cast[*corev1.ReplicationController](oldObj))
 		}
-		if len(subresources) == 1 && subresources[0] == "status" {
-			return nil // corev1.ReplicationControllerStatus has no validation
-		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*corev1.ReplicationControllerList)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*corev1.ReplicationControllerList)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_ReplicationControllerList(ctx, op, nil /* fldPath */, obj.(*corev1.ReplicationControllerList), safe.Cast[*corev1.ReplicationControllerList](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/apimachinery/pkg/api/operation/operation.go b/staging/src/k8s.io/apimachinery/pkg/api/operation/operation.go
index 9f5ae7a9d40..de594e8b3d9 100644
--- a/staging/src/k8s.io/apimachinery/pkg/api/operation/operation.go
+++ b/staging/src/k8s.io/apimachinery/pkg/api/operation/operation.go
@@ -42,6 +42,35 @@ type Operation struct {
 	//
 	// Unset options are disabled/false.
 	Options sets.Set[string]
+
+	// Request provides information about the request being validated.
+	Request Request
+}
+
+// Request provides information about the request being validated.
+type Request struct {
+	// Subresources identifies the subresource path components of the request. For
+	// example, Subresources for a request to `/api/v1/pods/my-pod/status` would be
+	// `["status"]`. For `/api/v1/widget/my-widget/x/y/z`, it would be `["x", "y",
+	// "z"]`. For a root resource (`/api/v1/pods/my-pod`), Subresources will be an
+	// empty slice.
+	//
+	// Validation logic should only consult this field if the validation rules for a
+	// particular field differ depending on whether the main resource or a specific
+	// subresource is being accessed. For example:
+	//
+	// Updates to a Pod resource (`/`) normally cannot change container resource
+	// requests/limits after the Pod is created (they are immutable). However, when
+	// accessing the Pod's "resize" subresource (`/resize`), these specific fields
+	// are allowed to be modified. In this scenario, the validation logic for
+	// `spec.container[*].resources` must check `Subresources` to permit changes only
+	// when the request targets the "resize" subresource.
+	//
+	// Note: This field should not be used to control which fields a subresource
+	// operation is allowed to write. This is the responsibility of "field wiping".
+	// Field wiping logic is expected to be handled in resource strategies by
+	// modifying the incoming object before it is validated.
+	Subresources []string
 }
 
 // Code is the request operation to be validated.
diff --git a/staging/src/k8s.io/apimachinery/pkg/runtime/scheme.go b/staging/src/k8s.io/apimachinery/pkg/runtime/scheme.go
index fde87f1a13e..8bee16009fe 100644
--- a/staging/src/k8s.io/apimachinery/pkg/runtime/scheme.go
+++ b/staging/src/k8s.io/apimachinery/pkg/runtime/scheme.go
@@ -75,7 +75,7 @@ type Scheme struct {
 	// The provided object must be a pointer.
 	// If oldObject is non-nil, update validation is performed and may perform additional
 	// validation such as transition rules and immutability checks.
-	validationFuncs map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList
+	validationFuncs map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList
 
 	// converter stores all registered conversion functions. It also has
 	// default converting behavior.
@@ -105,7 +105,7 @@ func NewScheme() *Scheme {
 		unversionedKinds:          map[string]reflect.Type{},
 		fieldLabelConversionFuncs: map[schema.GroupVersionKind]FieldLabelConversionFunc{},
 		defaulterFuncs:            map[reflect.Type]func(interface{}){},
-		validationFuncs:           map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresource ...string) field.ErrorList{},
+		validationFuncs:           map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList{},
 		versionPriority:           map[string][]string{},
 		schemeName:                naming.GetNameFromCallsite(internalPackages...),
 	}
@@ -362,7 +362,7 @@ func (s *Scheme) Default(src Object) {
 // is called. The function will never be called unless the validated object
 // matches srcType. If this function is invoked twice with the same srcType, the
 // fn passed to the later call will be used instead.
-func (s *Scheme) AddValidationFunc(srcType Object, fn func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList) {
+func (s *Scheme) AddValidationFunc(srcType Object, fn func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList) {
 	s.validationFuncs[reflect.TypeOf(srcType)] = fn
 }
 
@@ -371,7 +371,7 @@ func (s *Scheme) AddValidationFunc(srcType Object, fn func(ctx context.Context,
 // is not run when this is called.  Only the generated zz_generated.validations.go validation code is run.
 func (s *Scheme) Validate(ctx context.Context, options sets.Set[string], object Object, subresources ...string) field.ErrorList {
 	if fn, ok := s.validationFuncs[reflect.TypeOf(object)]; ok {
-		return fn(ctx, operation.Operation{Type: operation.Create, Options: options}, object, nil, subresources...)
+		return fn(ctx, operation.Operation{Type: operation.Create, Request: operation.Request{Subresources: subresources}, Options: options}, object, nil)
 	}
 	return nil
 }
@@ -381,7 +381,7 @@ func (s *Scheme) Validate(ctx context.Context, options sets.Set[string], object
 // is not run when this is called.  Only the generated zz_generated.validations.go validation code is run.
 func (s *Scheme) ValidateUpdate(ctx context.Context, options sets.Set[string], object, oldObject Object, subresources ...string) field.ErrorList {
 	if fn, ok := s.validationFuncs[reflect.TypeOf(object)]; ok {
-		return fn(ctx, operation.Operation{Type: operation.Update, Options: options}, object, oldObject, subresources...)
+		return fn(ctx, operation.Operation{Type: operation.Update, Request: operation.Request{Subresources: subresources}, Options: options}, object, oldObject)
 	}
 	return nil
 }
diff --git a/staging/src/k8s.io/apimachinery/pkg/runtime/scheme_test.go b/staging/src/k8s.io/apimachinery/pkg/runtime/scheme_test.go
index b2712c107d7..64ad611d490 100644
--- a/staging/src/k8s.io/apimachinery/pkg/runtime/scheme_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/runtime/scheme_test.go
@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"reflect"
+	"slices"
 	"strings"
 	"testing"
 
@@ -1063,17 +1064,17 @@ func TestRegisterValidate(t *testing.T) {
 	ctx := context.Background()
 
 	// register multiple types for testing to ensure registration is working as expected
-	s.AddValidationFunc(&TestType1{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList {
+	s.AddValidationFunc(&TestType1{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList {
 		if op.Options.Has("option1") {
 			return field.ErrorList{invalidIfOptionErr}
 		}
-		if len(subresources) == 1 && subresources[0] == "status" {
+		if slices.Equal(op.Request.Subresources, []string{"status"}) {
 			return field.ErrorList{invalidStatusErr}
 		}
 		return field.ErrorList{invalidValue}
 	})
 
-	s.AddValidationFunc(&TestType2{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList {
+	s.AddValidationFunc(&TestType2{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList {
 		if oldObject != nil {
 			return field.ErrorList{invalidLength}
 		}
diff --git a/staging/src/k8s.io/apiserver/pkg/registry/rest/validate_test.go b/staging/src/k8s.io/apiserver/pkg/registry/rest/validate_test.go
index 15f40d51414..398e4b7ae06 100644
--- a/staging/src/k8s.io/apiserver/pkg/registry/rest/validate_test.go
+++ b/staging/src/k8s.io/apiserver/pkg/registry/rest/validate_test.go
@@ -122,12 +122,12 @@ func TestValidateDeclaratively(t *testing.T) {
 	scheme.AddKnownTypes(internalGV, &Pod{})
 	scheme.AddKnownTypes(v1GV, &v1.Pod{})
 
-	scheme.AddValidationFunc(&v1.Pod{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList {
+	scheme.AddValidationFunc(&v1.Pod{}, func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList {
 		results := field.ErrorList{}
 		if op.Options.Has("option1") {
 			results = append(results, invalidIfOptionErr)
 		}
-		if len(subresources) == 1 && subresources[0] == "status" {
+		if len(op.Request.Subresources) == 1 && op.Request.Subresources[0] == "status" {
 			results = append(results, invalidStatusErr)
 		}
 		if op.Type == operation.Update && object.(*v1.Pod).Spec.RestartPolicy != oldObject.(*v1.Pod).Spec.RestartPolicy {
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_field_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_field_validations/zz_generated.validations.go
index 35993f4767c..3236bf3dba1 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_field_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_field_validations/zz_generated.validations.go
@@ -37,23 +37,23 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T2)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T2)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T2(ctx, op, nil /* fldPath */, obj.(*T2), safe.Cast[*T2](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T4)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T4)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T4(ctx, op, nil /* fldPath */, obj.(*T4), safe.Cast[*T4](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_type_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_type_validations/zz_generated.validations.go
index b24fc9d7e41..d903e9291c0 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_type_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/all_types_match/with_type_validations/zz_generated.validations.go
@@ -37,17 +37,17 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*E1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*E1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_E1(ctx, op, nil /* fldPath */, obj.(*E1), safe.Cast[*E1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/cross_pkg/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/cross_pkg/zz_generated.validations.go
index 65f59ae2fb0..6bec175081d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/cross_pkg/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/cross_pkg/zz_generated.validations.go
@@ -40,11 +40,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/elide_no_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/elide_no_validations/zz_generated.validations.go
index cb837d1015c..599c65f0155 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/elide_no_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/elide_no_validations/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/keys/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/keys/zz_generated.validations.go
index ea7886e55a9..df9d4bc0124 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/keys/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/keys/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_primitive/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_primitive/zz_generated.validations.go
index 87447e6fedb..cd3d578e82a 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_primitive/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_primitive/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_struct/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_struct/zz_generated.validations.go
index 0005c908aa2..6129ab818c6 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_struct/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/map_of_struct/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/multiple_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/multiple_validations/zz_generated.validations.go
index 45d1ddf4a11..98905e81c3b 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/multiple_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/multiple_validations/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/typedef_to_map/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/typedef_to_map/zz_generated.validations.go
index 30ba56890db..7d1b7df9a8d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/typedef_to_map/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/maps/typedef_to_map/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/multiple_tags/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/multiple_tags/zz_generated.validations.go
index 8534f115fbe..dfadcb102b9 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/multiple_tags/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/multiple_tags/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_field_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_field_validations/zz_generated.validations.go
index f40f6ffbbe3..49c430e7203 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_field_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_field_validations/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_type_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_type_validations/zz_generated.validations.go
index 97f2a252ca1..2a8ffef050b 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_type_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/one_type_match/with_type_validations/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/structs/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/structs/zz_generated.validations.go
index 125dcd938d7..bdf103e4fee 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/structs/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/structs/zz_generated.validations.go
@@ -37,35 +37,35 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T00)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T00)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T00(ctx, op, nil /* fldPath */, obj.(*T00), safe.Cast[*T00](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T01)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T01)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T01(ctx, op, nil /* fldPath */, obj.(*T01), safe.Cast[*T01](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T02)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T02)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T02(ctx, op, nil /* fldPath */, obj.(*T02), safe.Cast[*T02](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T03)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T03)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T03(ctx, op, nil /* fldPath */, obj.(*T03), safe.Cast[*T03](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*TMultiple)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*TMultiple)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_TMultiple(ctx, op, nil /* fldPath */, obj.(*TMultiple), safe.Cast[*TMultiple](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/typedefs/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/typedefs/zz_generated.validations.go
index 100b2902b3e..3cafc3fb6c4 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/typedefs/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/ordering/typedefs/zz_generated.validations.go
@@ -37,29 +37,29 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*E01)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*E01)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_E01(ctx, op, nil /* fldPath */, obj.(*E01), safe.Cast[*E01](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*E02)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*E02)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_E02(ctx, op, nil /* fldPath */, obj.(*E02), safe.Cast[*E02](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*E03)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*E03)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_E03(ctx, op, nil /* fldPath */, obj.(*E03), safe.Cast[*E03](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*EMultiple)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*EMultiple)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_EMultiple(ctx, op, nil /* fldPath */, obj.(*EMultiple), safe.Cast[*EMultiple](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/pointers/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/pointers/zz_generated.validations.go
index f9435c4625c..01c886002d1 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/pointers/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/pointers/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/primitives/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/primitives/zz_generated.validations.go
index e2a7500c8e1..fbe5557da7e 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/primitives/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/primitives/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/public_private/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/public_private/zz_generated.validations.go
index 0c025ce6e88..6183edb425f 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/public_private/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/public_private/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/recursive/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/recursive/zz_generated.validations.go
index dbb6360f0c5..dc4c3d0a7ee 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/recursive/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/recursive/zz_generated.validations.go
@@ -37,17 +37,17 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T2)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T2)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T2(ctx, op, nil /* fldPath */, obj.(*T2), safe.Cast[*T2](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/multiple_validations/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/multiple_validations/zz_generated.validations.go
index 3a3045d3e99..4800a10a803 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/multiple_validations/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/multiple_validations/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_primitive/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_primitive/zz_generated.validations.go
index a368910f023..3d10fe1e41b 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_primitive/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_primitive/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_struct/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_struct/zz_generated.validations.go
index c8edb7ca110..ef06bde86ea 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_struct/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/slice_of_struct/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/typedef_to_slice/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/typedef_to_slice/zz_generated.validations.go
index 589ed49974b..df02dfecb36 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/typedef_to_slice/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/slices/typedef_to_slice/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachkey/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachkey/zz_generated.validations.go
index 27167c78e47..175244921cc 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachkey/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachkey/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_primitive/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_primitive/zz_generated.validations.go
index 18e567a22ed..9b6cb78d3f8 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_primitive/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_primitive/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_struct/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_struct/zz_generated.validations.go
index e3592fad730..2419c9499ec 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_struct/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/map_of_struct/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_primitive/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_primitive/zz_generated.validations.go
index d882315f2a6..ec7df0ca02e 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_primitive/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_primitive/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_struct/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_struct/zz_generated.validations.go
index 15560f86954..8dbf5d7914d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_struct/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/slice_of_struct/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_map/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_map/zz_generated.validations.go
index 4e0f96b9a68..258438d7e93 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_map/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_map/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_slice/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_slice/zz_generated.validations.go
index d005dbf7156..e92ce78f98c 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_slice/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/eachval/typedef_to_slice/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/immutable/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/immutable/zz_generated.validations.go
index d0a7017b0d0..a1a75b556ca 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/immutable/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/immutable/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/multiple_keys/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/multiple_keys/zz_generated.validations.go
index df9b5864331..6dbe5fba0a9 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/multiple_keys/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/multiple_keys/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/single_key/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/single_key/zz_generated.validations.go
index bd8b9912f82..ce6eb1b3819 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/single_key/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/listmap/single_key/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/minimum/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/minimum/zz_generated.validations.go
index ba995970a06..d9c94e13e0d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/minimum/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/minimum/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/opaque/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/opaque/zz_generated.validations.go
index 4ebfba36acc..21947fb0b22 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/opaque/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/opaque/zz_generated.validations.go
@@ -37,35 +37,35 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*OtherString)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*OtherString)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_OtherString(ctx, op, nil /* fldPath */, obj.(*OtherString), safe.Cast[*OtherString](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*OtherStruct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*OtherStruct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_OtherStruct(ctx, op, nil /* fldPath */, obj.(*OtherStruct), safe.Cast[*OtherStruct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((TypedefMapOther)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((TypedefMapOther)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_TypedefMapOther(ctx, op, nil /* fldPath */, obj.(TypedefMapOther), safe.Cast[TypedefMapOther](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((TypedefSliceOther)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((TypedefSliceOther)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_TypedefSliceOther(ctx, op, nil /* fldPath */, obj.(TypedefSliceOther), safe.Cast[TypedefSliceOther](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/nonzero_defaults/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/nonzero_defaults/zz_generated.validations.go
index c710c8deb71..8da7af46bc0 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/nonzero_defaults/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/nonzero_defaults/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zero_defaults/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zero_defaults/zz_generated.validations.go
index 54dbc72560c..8ed1c25a8b3 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zero_defaults/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zero_defaults/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zz_generated.validations.go
index 7953540fbcb..6842c287751 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/optional/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/deep/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/deep/zz_generated.validations.go
index 5e9fec26938..0f24c640e2d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/deep/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/deep/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/nonincluded/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/nonincluded/zz_generated.validations.go
index fb74ae906c5..f2057c2ea98 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/nonincluded/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/nonincluded/zz_generated.validations.go
@@ -38,11 +38,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/shallow/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/shallow/zz_generated.validations.go
index 55d5e912a22..73fa7e7cd61 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/shallow/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/subfield/shallow/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_false/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_false/zz_generated.validations.go
index 493a554b96f..8fc12e8f77b 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_false/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_false/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_true/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_true/zz_generated.validations.go
index 23776614470..725a8f36124 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_true/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/tags/validate_true/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/type_args/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/type_args/zz_generated.validations.go
index c06f6b62be8..2045867a308 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/type_args/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/type_args/zz_generated.validations.go
@@ -38,11 +38,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/typedefs/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/typedefs/zz_generated.validations.go
index 485c21f98a9..6244f20cc4c 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/typedefs/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/typedefs/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/lists/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/lists/zz_generated.validations.go
index 77831e0d39b..2107f628ed6 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/lists/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/lists/zz_generated.validations.go
@@ -37,17 +37,17 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*M1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*M1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_M1(ctx, op, nil /* fldPath */, obj.(*M1), safe.Cast[*M1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/maps/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/maps/zz_generated.validations.go
index cac3db0171a..604e0c95959 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/maps/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/maps/zz_generated.validations.go
@@ -37,17 +37,17 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*M1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*M1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_M1(ctx, op, nil /* fldPath */, obj.(*M1), safe.Cast[*M1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
-	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*T1)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_T1(ctx, op, nil /* fldPath */, obj.(*T1), safe.Cast[*T1](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitive_pointers/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitive_pointers/zz_generated.validations.go
index 612e8d956de..ba66b1ed9b3 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitive_pointers/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitive_pointers/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitives/zz_generated.validations.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitives/zz_generated.validations.go
index b5448ca4d81..51713c6cd9d 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitives/zz_generated.validations.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/output_tests/update_validations/primitives/zz_generated.validations.go
@@ -37,11 +37,11 @@ func init() { localSchemeBuilder.Register(RegisterValidations) }
 // RegisterValidations adds validation functions to the given scheme.
 // Public to allow building arbitrary schemes.
 func RegisterValidations(scheme *testscheme.Scheme) error {
-	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}, subresources ...string) field.ErrorList {
-		if len(subresources) == 0 {
+	scheme.AddValidationFunc((*Struct)(nil), func(ctx context.Context, op operation.Operation, obj, oldObj interface{}) field.ErrorList {
+		if len(op.Request.Subresources) == 0 {
 			return Validate_Struct(ctx, op, nil /* fldPath */, obj.(*Struct), safe.Cast[*Struct](oldObj))
 		}
-		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, subresources))}
+		return field.ErrorList{field.InternalError(nil, fmt.Errorf("no validation found for %T, subresources: %v", obj, op.Request.Subresources))}
 	})
 	return nil
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/testscheme/testscheme.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/testscheme/testscheme.go
index f4226401c37..40698a7f8c0 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/testscheme/testscheme.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/testscheme/testscheme.go
@@ -47,18 +47,18 @@ import (
 // to also be used as a scheme builder.
 // Must only be used with tests that perform all registration before calls to validate.
 type Scheme struct {
-	validationFuncs    map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList
+	validationFuncs    map[reflect.Type]func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList
 	registrationErrors field.ErrorList
 }
 
 // New creates a new Scheme.
 func New() *Scheme {
-	return &Scheme{validationFuncs: map[reflect.Type]func(ctx context.Context, op operation.Operation, object interface{}, oldObject interface{}, subresources ...string) field.ErrorList{}}
+	return &Scheme{validationFuncs: map[reflect.Type]func(ctx context.Context, op operation.Operation, object interface{}, oldObject interface{}) field.ErrorList{}}
 }
 
 // AddValidationFunc registers a validation function.
 // Last writer wins.
-func (s *Scheme) AddValidationFunc(srcType any, fn func(ctx context.Context, op operation.Operation, object, oldObject interface{}, subresources ...string) field.ErrorList) {
+func (s *Scheme) AddValidationFunc(srcType any, fn func(ctx context.Context, op operation.Operation, object, oldObject interface{}) field.ErrorList) {
 	s.validationFuncs[reflect.TypeOf(srcType)] = fn
 }
 
@@ -68,7 +68,7 @@ func (s *Scheme) Validate(ctx context.Context, opts sets.Set[string], object any
 		return s.registrationErrors // short circuit with registration errors if any are present
 	}
 	if fn, ok := s.validationFuncs[reflect.TypeOf(object)]; ok {
-		return fn(ctx, operation.Operation{Type: operation.Create, Options: opts}, object, nil, subresources...)
+		return fn(ctx, operation.Operation{Type: operation.Create, Request: operation.Request{Subresources: subresources}, Options: opts}, object, nil)
 	}
 	return nil
 }
@@ -79,7 +79,7 @@ func (s *Scheme) ValidateUpdate(ctx context.Context, opts sets.Set[string], obje
 		return s.registrationErrors // short circuit with registration errors if any are present
 	}
 	if fn, ok := s.validationFuncs[reflect.TypeOf(object)]; ok {
-		return fn(ctx, operation.Operation{Type: operation.Update}, object, oldObject, subresources...)
+		return fn(ctx, operation.Operation{Type: operation.Update, Request: operation.Request{Subresources: subresources}, Options: opts}, object, oldObject)
 	}
 	return nil
 }
@@ -243,9 +243,10 @@ func (s *ValidationTestBuilder) Value(value any) *ValidationTester {
 // tests for a validatable value.
 type ValidationTester struct {
 	*ValidationTestBuilder
-	value    any
-	oldValue any
-	opts     sets.Set[string]
+	value        any
+	oldValue     any
+	opts         sets.Set[string]
+	subresources []string
 }
 
 // OldValue sets the oldValue for this ValidationTester. When oldValue is set to
@@ -271,6 +272,12 @@ func (v *ValidationTester) Opts(opts sets.Set[string]) *ValidationTester {
 	return v
 }
 
+// Subresource sets the ValidationOpts to use.
+func (v *ValidationTester) Subresources(subresources []string) *ValidationTester {
+	v.subresources = subresources
+	return v
+}
+
 func multiline(errs field.ErrorList) string {
 	if len(errs) == 0 {
 		return "<no errors>"
@@ -529,9 +536,9 @@ func byFullError(err *field.Error) string {
 func (v *ValidationTester) validate() field.ErrorList {
 	var errs field.ErrorList
 	if v.oldValue == nil {
-		errs = v.s.Validate(context.Background(), v.opts, v.value)
+		errs = v.s.Validate(context.Background(), v.opts, v.value, v.subresources...)
 	} else {
-		errs = v.s.ValidateUpdate(context.Background(), v.opts, v.value, v.oldValue)
+		errs = v.s.ValidateUpdate(context.Background(), v.opts, v.value, v.oldValue, v.subresources...)
 	}
 	return errs
 }
diff --git a/staging/src/k8s.io/code-generator/cmd/validation-gen/validation.go b/staging/src/k8s.io/code-generator/cmd/validation-gen/validation.go
index 7779666829b..2eda6e8fefe 100644
--- a/staging/src/k8s.io/code-generator/cmd/validation-gen/validation.go
+++ b/staging/src/k8s.io/code-generator/cmd/validation-gen/validation.go
@@ -250,16 +250,6 @@ type typeNode struct {
 	typeValidations validators.Validations // validations on the type
 }
 
-// lookupField returns the childNode with the specified JSON name.
-func (n typeNode) lookupField(jsonName string) *childNode {
-	for _, fld := range n.fields {
-		if fld.jsonName == jsonName {
-			return fld
-		}
-	}
-	return nil
-}
-
 // DiscoverType walks the given type recursively, building a type-graph in this
 // typeDiscoverer.  If this is called multiple times for different types, the
 // graphs will be will be merged.
@@ -826,36 +816,26 @@ func (g *genValidations) emitRegisterFunction(c *generator.Context, schemeRegist
 			panic(fmt.Sprintf("found nil node for root-type %v", rootType))
 		}
 
-		// TODO: It would be nice if these were not hard-coded.
-		var statusType *types.Type
-		var statusField string
-		if status := node.lookupField("status"); status != nil {
-			statusType = status.node.valueType
-			statusField = status.name
-		}
-
 		targs := generator.Args{
-			"rootType":    rootType,
-			"typePfx":     "",
-			"statusType":  statusType,
-			"statusField": statusField,
-			"field":       mkSymbolArgs(c, fieldPkgSymbols),
-			"fmt":         mkSymbolArgs(c, fmtPkgSymbols),
-			"operation":   mkSymbolArgs(c, operationPkgSymbols),
-			"safe":        mkSymbolArgs(c, safePkgSymbols),
-			"context":     mkSymbolArgs(c, contextPkgSymbols),
+			"rootType":  rootType,
+			"typePfx":   "",
+			"field":     mkSymbolArgs(c, fieldPkgSymbols),
+			"fmt":       mkSymbolArgs(c, fmtPkgSymbols),
+			"operation": mkSymbolArgs(c, operationPkgSymbols),
+			"safe":      mkSymbolArgs(c, safePkgSymbols),
+			"context":   mkSymbolArgs(c, contextPkgSymbols),
 		}
 		if !isNilableType(rootType) {
 			targs["typePfx"] = "*"
 		}
 
+		// TODO: Remove special-casing for `/` and `/scale` resources once ratcheting is introduced.
 		// This uses a typed nil pointer, rather than a real instance because
 		// we need the type information, but not an instance of the type.
 		sw.Do("scheme.AddValidationFunc(", targs)
 		sw.Do("    ($.typePfx$$.rootType|raw$)(nil), ", targs)
-		sw.Do("    func(ctx $.context.Context$, op $.operation.Operation|raw$, obj, oldObj interface{}, ", targs)
-		sw.Do("    subresources ...string) $.field.ErrorList|raw$ {\n", targs)
-		sw.Do("  if len(subresources) == 0 {\n", targs)
+		sw.Do("    func(ctx $.context.Context$, op $.operation.Operation|raw$, obj, oldObj interface{}) $.field.ErrorList|raw$ {\n", targs)
+		sw.Do("  if len(op.Request.Subresources) == 0 {\n", targs)
 		sw.Do("    return $.rootType|objectvalidationfn$(", targs)
 		sw.Do("               ctx, ", targs)
 		sw.Do("               op, ", targs)
@@ -863,36 +843,10 @@ func (g *genValidations) emitRegisterFunction(c *generator.Context, schemeRegist
 		sw.Do("               obj.($.typePfx$$.rootType|raw$), ", targs)
 		sw.Do("               $.safe.Cast|raw$[$.typePfx$$.rootType|raw$](oldObj))\n", targs)
 		sw.Do("  }\n", targs)
-
-		if statusType != nil {
-			targs["statusTypePfx"] = ""
-			targs["statusTypePtrPfx"] = ""
-			if !isNilableType(statusType) {
-				targs["statusTypePfx"] = "*"
-				targs["statusTypePtrPfx"] = "&"
-			}
-			sw.Do("  if len(subresources) == 1 && subresources[0] == \"status\" {\n", targs)
-			if hasValidations(g.discovered.typeNodes[statusType]) {
-				sw.Do("    root := obj.($.typePfx$$.rootType|raw$)\n", targs)
-				sw.Do("    return $.statusType|objectvalidationfn$(", targs)
-				sw.Do("               ctx, ", targs)
-				sw.Do("               op, ", targs)
-				sw.Do("               nil /* fldPath */, ", targs)
-				sw.Do("               &root.$.statusField$, ", targs)
-				sw.Do("               $.safe.Field|raw$(", targs)
-				sw.Do("                   $.safe.Cast|raw$[$.typePfx$$.rootType|raw$](oldObj), ", targs)
-				sw.Do("                   func(oldObj $.typePfx$$.rootType|raw$) $.statusTypePfx$$.statusType|raw$ { ", targs)
-				sw.Do("                       return $.statusTypePtrPfx$oldObj.$.statusField$ ", targs)
-				sw.Do("                   }))\n", targs)
-			} else {
-				sw.Do("    return nil // $.statusType|raw$ has no validation\n", targs)
-			}
-			sw.Do("  }\n", targs)
-		}
 		sw.Do("  return $.field.ErrorList|raw${", targs)
 		sw.Do("      $.field.InternalError|raw$(", targs)
 		sw.Do("          nil, ", targs)
-		sw.Do("          $.fmt.Errorf|raw$(\"no validation found for %T, subresources: %v\", obj, subresources))", targs)
+		sw.Do("          $.fmt.Errorf|raw$(\"no validation found for %T, subresources: %v\", obj, op.Request.Subresources))", targs)
 		sw.Do("  }\n", targs)
 		sw.Do("})\n", targs)
 	}