XSM: make .iomem_mapping_vpci() hook dependent upon HAS_VPCI=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

@@ -525,12 +525,14 @@ static XSM_INLINE int cf_check xsm_iomem_mapping(
     return xsm_default_action(action, current->domain, d);
 }
 
+#ifdef CONFIG_HAS_VPCI
 static XSM_INLINE int cf_check xsm_iomem_mapping_vpci(
     XSM_DEFAULT_ARG struct domain *d, uint64_t s, uint64_t e, uint8_t allow)
 {
     XSM_ASSERT_ACTION(XSM_HOOK);
     return xsm_default_action(action, current->domain, d);
 }
+#endif
 
 #ifdef CONFIG_HAS_PCI
 static XSM_INLINE int cf_check xsm_pci_config_permission(

xen/include/xsm/hooks.h

@@ -79,7 +79,9 @@ XSM_HOOK(int, irq_permission, struct domain *, int, uint8_t)
 XSM_HOOK(int, iomem_permission, struct domain *, uint64_t, uint64_t, uint8_t)
 
 XSM_HOOK(int, iomem_mapping, struct domain *, uint64_t, uint64_t, uint8_t)
+#ifdef CONFIG_HAS_VPCI
 XSM_HOOK(int, iomem_mapping_vpci, struct domain *, uint64_t, uint64_t, uint8_t)
+#endif
 
 #if defined(CONFIG_HAS_PASSTHROUGH) && defined(CONFIG_HAS_PCI)
 XSM_HOOK(int, resource_plug_pci, uint32_t)