Changeset d0485c6 in mainline for kernel/generic/include/mm/page.h

Timestamp:

2006-12-01T22:10:40Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

3d76996

Parents:

7bf7ef7

Message:

Introduce page colors. So far, only sparc64 uses correct page color bits. Other architectures have a dummy define
specifying zero bits for a page color.

There is a new check of page color in as_area_share(). Because of lack of support for this in the userspace, the
check has been #ifef'ed out.

File:

• kernel/generic/include/mm/page.h (modified) (1 diff)

kernel/generic/include/mm/page.h

@@ -67 +67 @@
 #define PAGE_GLOBAL             (1<<PAGE_GLOBAL_SHIFT)
 
+
+/**
+ * Macro for computing page color.
+ */
+#define PAGE_COLOR(va)          (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
+
 /** Page fault access type. */
 enum pf_access {