Changeset 4512d7e in mainline for generic/include/mm/as.h

Timestamp:

2006-01-19T22:17:47Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

6461d67c

Parents:

64c44e8

Message:

New ASID management subsystem (initial work, more is required).
Some TLB invalidation changes.

File:

• generic/include/mm/as.h (modified) (5 diffs)

generic/include/mm/as.h

@@ -49 +49 @@
 #define UDATA_ADDRESS   UDATA_ADDRESS_ARCH
 
+#define AS_KERNEL       (1<<0)          /**< Kernel address space. */
+
 enum as_area_type {
         AS_AREA_TEXT = 1, AS_AREA_DATA, AS_AREA_STACK 
@@ -62 +64 @@
         link_t link;
         as_area_type_t type;
-        size_t size;            /**< Size of this area. */
+        size_t size;            /**< Size of this area in multiples of PAGE_SIZE. */
         __address base;         /**< Base address of this area. */
         index_t *mapping;       /**< Map of physical frame numbers mapped to virtual page numbers in this area. */
@@ -75 +77 @@
  */
 struct as {
+        /** Protected by asidlock. Must be acquired before as-> lock. */
+        link_t as_with_asid_link;
+
         SPINLOCK_DECLARE(lock);
         link_t as_area_head;
@@ -81 +86 @@
 };
 
-extern as_t * as_create(pte_t *ptl0);
+extern as_t * as_create(pte_t *ptl0, 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_area_set_mapping(as_area_t *a, index_t vpn, index_t pfn);
@@ -87 +92 @@
 extern void as_install(as_t *m);
 
-/*
- * Each architecture should implement this function.
- * Its main purpose is to do TLB purges according
- * to architecture's requirements. Note that
- * some architectures invalidate their TLB automatically
- * on hardware address space switch (e.g. ia32 and
- * amd64).
- */
+/* Interface to be implemented by architectures. */
 #ifndef as_install_arch
 extern void as_install_arch(as_t *as);