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authorHelge Deller <deller@parisc-linux.org>2006-04-20 20:40:23 +0000
committerKyle McMartin <kyle@hera.kernel.org>2006-04-21 22:20:34 +0000
commit2fd83038160531245099c3c5b3511fa4b80765eb (patch)
tree6145a9e78723c76ceac722eb60267c0116983c12 /include/asm-parisc/page.h
parentd668da80d613def981c573354e1853e38bd0698d (diff)
[PARISC] Further work for multiple page sizes
More work towards supporing multiple page sizes on 64-bit. Convert some assumptions that 64bit uses 3 level page tables into testing PT_NLEVELS. Also some BUG() to BUG_ON() conversions and some cleanups to assembler. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/asm-parisc/page.h')
-rw-r--r--include/asm-parisc/page.h25
1 files changed, 21 insertions, 4 deletions
diff --git a/include/asm-parisc/page.h b/include/asm-parisc/page.h
index 45e02aa5bf4..c0dd461fb8f 100644
--- a/include/asm-parisc/page.h
+++ b/include/asm-parisc/page.h
@@ -1,13 +1,30 @@
#ifndef _PARISC_PAGE_H
#define _PARISC_PAGE_H
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
+#if !defined(__KERNEL__)
+/* this is for userspace applications (4k page size) */
+# define PAGE_SHIFT 12 /* 4k */
+# define PAGE_SIZE (1UL << PAGE_SHIFT)
+# define PAGE_MASK (~(PAGE_SIZE-1))
+#endif
+
#ifdef __KERNEL__
#include <linux/config.h>
+
+#if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
+# define PAGE_SHIFT 12 /* 4k */
+#elif defined(CONFIG_PARISC_PAGE_SIZE_16KB)
+# define PAGE_SHIFT 14 /* 16k */
+#elif defined(CONFIG_PARISC_PAGE_SIZE_64KB)
+# define PAGE_SHIFT 16 /* 64k */
+#else
+# error "unknown default kernel page size"
+#endif
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+
#ifndef __ASSEMBLY__
#include <asm/types.h>