Changeset f8ddd17 in mainline for kernel/generic/include/mm

Timestamp:

2006-12-09T20:20:50Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

b82a13c

Parents:

9ab9c2ec

Message:

Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.

Location:

kernel/generic/include/mm

Files:

• as.h (modified) (2 diffs)
• page.h (modified) (3 diffs)

kernel/generic/include/mm/as.h

@@ -95 +95 @@
         asid_t asid;
         
-#ifdef CONFIG_VIRT_IDX_DCACHE
-        bool dcache_flush_on_install;
-        bool dcache_flush_on_deinstall;
-#endif /* CONFIG_VIRT_IDX_DCACHE */
-
         /** Architecture specific content. */
         as_arch_t arch;
@@ -166 +161 @@
         /** Data to be used by the backend. */
         mem_backend_data_t backend_data;
-
-        /** 
-         * Virtual color of the original address space area that was at the beginning
-         * of the share chain.
-         */
-        int orig_color; 
 };
 

kernel/generic/include/mm/page.h

@@ -71 +71 @@
  * Macro for computing page color.
  */
-#define PAGE_COLOR(va)          (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
+#define PAGE_COLOR(va)  (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
 
 /** Page fault access type. */
@@ -83 +83 @@
 /** Operations to manipulate page mappings. */
 struct page_mapping_operations {
-        void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int flags);
+        void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int
+                flags);
         void (* mapping_remove)(as_t *as, uintptr_t page);
         pte_t *(* mapping_find)(as_t *as, uintptr_t page);
@@ -94 +95 @@
 extern void page_table_lock(as_t *as, bool lock);
 extern void page_table_unlock(as_t *as, bool unlock);
-extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int flags);
+extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int
+        flags);
 extern void page_mapping_remove(as_t *as, uintptr_t page);
 extern pte_t *page_mapping_find(as_t *as, uintptr_t page);