XSM: make .hypfs() hook dependent upon HYPFS=y

It's unreachable / dead otherwise.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Daniel P. Smith <dpsmith@apertussolutions.com>

xen/include/xsm/dummy.h

@@ -437,11 +437,13 @@ static XSM_INLINE int cf_check xsm_resource_setup_misc(XSM_DEFAULT_VOID)
     return xsm_default_action(action, current->domain, NULL);
 }
 
+#ifdef CONFIG_HYPFS
 static XSM_INLINE int cf_check xsm_hypfs_op(XSM_DEFAULT_VOID)
 {
     XSM_ASSERT_ACTION(XSM_PRIV);
     return xsm_default_action(action, current->domain, NULL);
 }
+#endif
 
 static XSM_INLINE long cf_check xsm_do_xsm_op(XEN_GUEST_HANDLE_PARAM(void) op)
 {

xen/include/xsm/hooks.h

@@ -100,7 +100,9 @@ XSM_HOOK(int, pci_config_permission, struct domain *, uint32_t, uint16_t,
                                      uint16_t, uint8_t)
 #endif
 
+#ifdef CONFIG_HYPFS
 XSM_HOOK(int, hypfs_op)
+#endif
 
 XSM_HOOK(int, hvm_param, struct domain *, unsigned long)
 XSM_HOOK(int, hvm_param_altp2mhvm, struct domain *)

xen/xsm/flask/hooks.c

@@ -1345,10 +1345,12 @@ static int cf_check flask_resource_setup_misc(void)
     return avc_current_has_perm(SECINITSID_XEN, SECCLASS_RESOURCE, RESOURCE__SETUP, NULL);
 }
 
+#ifdef CONFIG_HYPFS
 static inline int cf_check flask_hypfs_op(void)
 {
     return domain_has_xen(current->domain, XEN__HYPFS_OP);
 }
+#endif
 
 static int cf_check flask_add_to_physmap(struct domain *d1, struct domain *d2)
 {