Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', 'x86/crashdump', 'x86...

[linux-2.6-omap-h63xx.git] / arch / x86 / include / asm / pgtable_64.h

diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index 4798a4033e3a7a05b920ba792af9f22541f48318..ba09289accaa0322c70fb580a40f83677a900c9f 100644 (file)
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -146,7 +146,7 @@ static inline void native_pgd_clear(pgd_t *pgd)
 #define PGDIR_MASK     (~(PGDIR_SIZE - 1))
 
 
-#define MAXMEM          _AC(0x00003fffffffffff, UL)
+#define MAXMEM          _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL)
 #define VMALLOC_START    _AC(0xffffc20000000000, UL)
 #define VMALLOC_END      _AC(0xffffe1ffffffffff, UL)
 #define VMEMMAP_START   _AC(0xffffe20000000000, UL)
@@ -244,10 +244,22 @@ static inline int pud_large(pud_t pte)
 extern int direct_gbpages;
 
 /* Encode and de-code a swap entry */
-#define __swp_type(x)                  (((x).val >> 1) & 0x3f)
-#define __swp_offset(x)                        ((x).val >> 8)
-#define __swp_entry(type, offset)      ((swp_entry_t) { ((type) << 1) | \
-                                                        ((offset) << 8) })
+#if _PAGE_BIT_FILE < _PAGE_BIT_PROTNONE
+#define SWP_TYPE_BITS (_PAGE_BIT_FILE - _PAGE_BIT_PRESENT - 1)
+#define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1)
+#else
+#define SWP_TYPE_BITS (_PAGE_BIT_PROTNONE - _PAGE_BIT_PRESENT - 1)
+#define SWP_OFFSET_SHIFT (_PAGE_BIT_FILE + 1)
+#endif
+
+#define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS)
+
+#define __swp_type(x)                  (((x).val >> (_PAGE_BIT_PRESENT + 1)) \
+                                        & ((1U << SWP_TYPE_BITS) - 1))
+#define __swp_offset(x)                        ((x).val >> SWP_OFFSET_SHIFT)
+#define __swp_entry(type, offset)      ((swp_entry_t) { \
+                                        ((type) << (_PAGE_BIT_PRESENT + 1)) \
+                                        | ((offset) << SWP_OFFSET_SHIFT) })
 #define __pte_to_swp_entry(pte)                ((swp_entry_t) { pte_val((pte)) })
 #define __swp_entry_to_pte(x)          ((pte_t) { .pte = (x).val })