Changeset c868e2d in mainline for kernel/generic/src

Timestamp:

2011-12-19T23:42:44Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

398e33be

Parents:

7aaed09

Message:

Add and apply page_mapping_make_global() on each span added to the
kernel non-identity. This ensures that the kernel non-identity will use
the same set of page tables in all address spaces.

Location:

kernel/generic/src/mm

Files:

• km.c (modified) (2 diffs)
• page.c (modified) (1 diff)

kernel/generic/src/mm/km.c

@@ -38 +38 @@
 #include <mm/km.h>
 #include <arch/mm/km.h>
+#include <mm/page.h>
 #include <config.h>
 #include <typedefs.h>
@@ -70 +71 @@
         bool span_added;
 
+        page_mapping_make_global(base, size);
+
         span_added = ra_span_add(km_ni_arena, base, size);
         ASSERT(span_added);

kernel/generic/src/mm/page.c

@@ -178 +178 @@
 }
 
+/** Make the mapping shared by all page tables (not address spaces).
+ * 
+ * @param base Starting virtual address of the range that is made global.
+ * @param size Size of the address range that is made global.
+ */
+void page_mapping_make_global(uintptr_t base, size_t size)
+{
+        ASSERT(page_mapping_operations);
+        ASSERT(page_mapping_operations->mapping_make_global);
+        
+        return page_mapping_operations->mapping_make_global(base, size);
+}
+
 uintptr_t hw_map(uintptr_t physaddr, size_t size)
 {