[SPARC]: Merge include/asm-sparc{,64}/prom.h

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

diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index 4409dabe31c61cf30002b4da56482d05318c686b..44c0a4f1b1eb64d10bd1e33013b7e52a3dcc55f1 100644 (file)
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -13,10 +13,12 @@
 #define _PAGE_BIT_DIRTY                6
 #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+ */
 #define _PAGE_BIT_UNUSED1      9       /* available for programmer */
 #define _PAGE_BIT_UNUSED2      10
 #define _PAGE_BIT_UNUSED3      11
+#define _PAGE_BIT_PAT_LARGE    12      /* On 2MB or 1GB pages */
 #define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */
 
 /*
@@ -36,6 +38,8 @@
 #define _PAGE_UNUSED1  (_AC(1, L)<<_PAGE_BIT_UNUSED1)
 #define _PAGE_UNUSED2  (_AC(1, L)<<_PAGE_BIT_UNUSED2)
 #define _PAGE_UNUSED3  (_AC(1, L)<<_PAGE_BIT_UNUSED3)
+#define _PAGE_PAT      (_AC(1, L)<<_PAGE_BIT_PAT)
+#define _PAGE_PAT_LARGE (_AC(1, L)<<_PAGE_BIT_PAT_LARGE)
 
 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 #define _PAGE_NX       (_AC(1, ULL) << _PAGE_BIT_NX)
@@ -79,6 +83,7 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
 
 #define __PAGE_KERNEL_RO               (__PAGE_KERNEL & ~_PAGE_RW)
 #define __PAGE_KERNEL_RX               (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
+#define __PAGE_KERNEL_EXEC_NOCACHE     (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_NOCACHE          (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_VSYSCALL         (__PAGE_KERNEL_RX | _PAGE_USER)
 #define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
@@ -96,6 +101,7 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
 #define PAGE_KERNEL_EXEC               MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
 #define PAGE_KERNEL_RX                 MAKE_GLOBAL(__PAGE_KERNEL_RX)
 #define PAGE_KERNEL_NOCACHE            MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
+#define PAGE_KERNEL_EXEC_NOCACHE       MAKE_GLOBAL(__PAGE_KERNEL_EXEC_NOCACHE)
 #define PAGE_KERNEL_LARGE              MAKE_GLOBAL(__PAGE_KERNEL_LARGE)
 #define PAGE_KERNEL_LARGE_EXEC         MAKE_GLOBAL(__PAGE_KERNEL_LARGE_EXEC)
 #define PAGE_KERNEL_VSYSCALL           MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL)
@@ -129,6 +135,8 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
 extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
 
+extern spinlock_t pgd_lock;
+extern struct list_head pgd_list;
 
 /*
  * The following only work if pte_present() is true.
@@ -234,6 +242,13 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 
 #ifndef __ASSEMBLY__
 
+enum {
+       PG_LEVEL_NONE,
+       PG_LEVEL_4K,
+       PG_LEVEL_2M,
+       PG_LEVEL_1G,
+};
+
 /*
  * Helper function that returns the kernel pagetable entry controlling
  * the virtual address 'address'. NULL means no pagetable entry present.