Changeset ef67bab in mainline for generic/include/mm

Timestamp:

2006-02-01T00:02:16Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

071a8ae6

Parents:

fc1e4f6

Message:

Memory management work.
Remove the last (i.e. 'root') argument from page_mapping_insert() and page_mapping_find().
Page table address is now extracted from the first (i.e. 'as') argument.
Add a lot of infrastructure to make the above possible.
sparc64 is now broken, most likely because of insufficient identity mapping of physical memory.

Location:

generic/include/mm

Files:

• as.h (modified) (1 diff)
• buddy.h (modified) (1 diff)
• page.h (modified) (2 diffs)

generic/include/mm/as.h

@@ -81 +81 @@
         SPINLOCK_DECLARE(lock);
         link_t as_area_head;
-        pte_t *ptl0;
-        asid_t asid;                    /**< Address space identifier. */
+
+        /** Page table pointer. Constant on architectures that use global page hash table. */
+        pte_t *page_table;
+
+        /** Address space identifier. Constant on architectures that do not support ASIDs.*/
+        asid_t asid;
 };
 
+struct as_operations {
+        pte_t *(* page_table_create)(int flags);
+};
+typedef struct as_operations as_operations_t;
+
 extern as_t *AS_KERNEL;
+extern as_operations_t *as_operations;
 
-extern as_t *as_create(pte_t *ptl0, int flags);
+extern void as_init(void);
+extern as_t *as_create(int flags);
 extern as_area_t *as_area_create(as_t *as, as_area_type_t type, size_t size, __address base);
 extern void as_set_mapping(as_t *as, __address page, __address frame);

generic/include/mm/buddy.h

@@ -58 +58 @@
 extern void buddy_system_structure_print(buddy_system_t *b, size_t elem_size);
 
-
 #endif

generic/include/mm/page.h

@@ -62 +62 @@
 /** Operations to manipulate page mappings. */
 struct page_operations {
-        void (* mapping_insert)(as_t *as, __address page, __address frame, int flags, __address root);
-        pte_t *(* mapping_find)(as_t *as, __address page, __address root);
+        void (* mapping_insert)(as_t *as, __address page, __address frame, int flags);
+        pte_t *(* mapping_find)(as_t *as, __address page);
 };
 typedef struct page_operations page_operations_t;
@@ -70 +70 @@
 
 extern void page_init(void);
-extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags, __address root);
-extern pte_t *page_mapping_find(as_t *as, __address page, __address root);
+extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags);
+extern pte_t *page_mapping_find(as_t *as, __address page);
+extern pte_t *page_table_create(int flags);
 extern void map_structure(__address s, size_t size);