[PARISC] Add some defines for HugeTLB pages

Define some constants for HugeTLB pages, not that parisc-linux supports it yet. Signed-off-by: Helge Deller <[email protected]> Signed-off-by: Kyle McMartin <[email protected]>
mna · Jan 11, 2006 · e8b736c · e8b736c
1 parent 4d64c9f
commit e8b736c
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/include/asm-parisc/page.h b/include/asm-parisc/page.h
@@ -135,6 +135,13 @@ extern int npmem_ranges;
 #define pfn_valid(pfn)		((pfn) < max_mapnr)
 #endif /* CONFIG_DISCONTIGMEM */
 
+#ifdef CONFIG_HUGETLB_PAGE
+#define HPAGE_SHIFT		22	/* 4MB (is this fixed?) */
+#define HPAGE_SIZE      	((1UL) << HPAGE_SHIFT)
+#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
+#endif
+
 #define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
 #define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)