Add a stub for pmap_align_superpage() on machines that don't (yet)

implement pmap-level support for superpages.

sys/arm/arm/pmap.c

@@ -4355,6 +4355,16 @@ pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size)
 	return(addr);
 }
 
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}
+
 
 /*
  * Map a set of physical memory pages into the kernel virtual

sys/ia64/ia64/pmap.c

@@ -2266,6 +2266,16 @@ pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size)
 	return addr;
 }
 
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}
+
 #include "opt_ddb.h"
 
 #ifdef DDB

sys/mips/mips/pmap.c

@@ -2851,6 +2851,16 @@ pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size)
 	return addr;
 }
 
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}
+
 int pmap_pid_dump(int pid);
 
 int

sys/powerpc/powerpc/pmap_dispatch.c

@@ -303,6 +303,16 @@ pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size)
 	return (MMU_ADDR_HINT(mmu_obj, obj, addr, size));
 }
 
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}
+
 
 
 /*

sys/sparc64/sparc64/pmap.c

@@ -1984,3 +1984,13 @@ pmap_addr_hint(vm_object_t object, vm_offset_t va, vm_size_t size)
 
 	return (va);
 }
+
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}

sys/sun4v/sun4v/pmap.c

@@ -430,6 +430,16 @@ pmap_addr_hint(vm_object_t object, vm_offset_t va, vm_size_t size)
 	return (va);
 }
 
+/*
+ *	Increase the starting virtual address of the given mapping if a
+ *	different alignment might result in more superpage mappings.
+ */
+void
+pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
+    vm_offset_t *addr, vm_size_t size)
+{
+}
+
 /*
  * Bootstrap the system enough to run with virtual memory.
  */