Changes in kernel/generic/src/mm/page.c [8757be86:d4673296] in mainline

File:

• kernel/generic/src/mm/page.c (modified) (1 diff)

kernel/generic/src/mm/page.c

@@ -84 +84 @@
 }
 
+/** Map memory structure
+ *
+ * Identity-map memory structure
+ * considering possible crossings
+ * of page boundaries.
+ *
+ * @param addr Address of the structure.
+ * @param size Size of the structure.
+ *
+ */
+void map_structure(uintptr_t addr, size_t size)
+{
+        size_t length = size + (addr - (addr & ~(PAGE_SIZE - 1)));
+        size_t cnt = length / PAGE_SIZE + (length % PAGE_SIZE > 0);
+        
+        size_t i;
+        for (i = 0; i < cnt; i++)
+                page_mapping_insert(AS_KERNEL, addr + i * PAGE_SIZE,
+                    addr + i * PAGE_SIZE, PAGE_NOT_CACHEABLE | PAGE_WRITE);
+        
+        /* Repel prefetched accesses to the old mapping. */
+        memory_barrier();
+}
+
 /** Insert mapping of page to frame.
  *