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

[sfrench/cifs-2.6.git] / arch / x86 / include / asm / pgtable.h

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index c012f3b11671574150720dcaee023780cd79d905..83e69f4a37f03bafb39869169d6286210c7c95df 100644 (file)
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -10,7 +10,6 @@
 #define _PAGE_BIT_PCD          4       /* page cache disabled */
 #define _PAGE_BIT_ACCESSED     5       /* was accessed (raised by CPU) */
 #define _PAGE_BIT_DIRTY                6       /* was written to (raised by CPU) */
-#define _PAGE_BIT_FILE         6
 #define _PAGE_BIT_PSE          7       /* 4 MB (or 2MB) page */
 #define _PAGE_BIT_PAT          7       /* on 4KB pages */
 #define _PAGE_BIT_GLOBAL       8       /* Global TLB entry PPro+ */
@@ -22,6 +21,12 @@
 #define _PAGE_BIT_CPA_TEST     _PAGE_BIT_UNUSED1
 #define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */
 
+/* If _PAGE_BIT_PRESENT is clear, we use these: */
+/* - if the user mapped it with PROT_NONE; pte_present gives true */
+#define _PAGE_BIT_PROTNONE     _PAGE_BIT_GLOBAL
+/* - set: nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_BIT_FILE         _PAGE_BIT_DIRTY
+
 #define _PAGE_PRESENT  (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
 #define _PAGE_RW       (_AT(pteval_t, 1) << _PAGE_BIT_RW)
 #define _PAGE_USER     (_AT(pteval_t, 1) << _PAGE_BIT_USER)
@@ -46,11 +51,8 @@
 #define _PAGE_NX       (_AT(pteval_t, 0))
 #endif
 
-/* If _PAGE_PRESENT is clear, we use these: */
-#define _PAGE_FILE     _PAGE_DIRTY     /* nonlinear file mapping,
-                                        * saved PTE; unset:swap */
-#define _PAGE_PROTNONE _PAGE_PSE       /* if the user mapped it with PROT_NONE;
-                                          pte_present gives true */
+#define _PAGE_FILE     (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
+#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
 
 #define _PAGE_TABLE    (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |        \
                         _PAGE_ACCESSED | _PAGE_DIRTY)
@@ -158,8 +160,19 @@
 #define PGD_IDENT_ATTR  0x001          /* PRESENT (no other attributes) */
 #endif
 
+/*
+ * Macro to mark a page protection value as UC-
+ */
+#define pgprot_noncached(prot)                                 \
+       ((boot_cpu_data.x86 > 3)                                \
+        ? (__pgprot(pgprot_val(prot) | _PAGE_CACHE_UC_MINUS))  \
+        : (prot))
+
 #ifndef __ASSEMBLY__
 
+#define pgprot_writecombine    pgprot_writecombine
+extern pgprot_t pgprot_writecombine(pgprot_t prot);
+
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..
@@ -329,6 +342,9 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
 #define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)
 
 #ifndef __ASSEMBLY__
+/* Indicate that x86 has its own track and untrack pfn vma functions */
+#define __HAVE_PFNMAP_TRACKING
+
 #define __HAVE_PHYS_MEM_ACCESS_PROT
 struct file;
 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,