thermal: fix Mediatek thermal controller build
[linux/fpc-iii.git] / arch / x86 / include / asm / pgtable_32.h
blobb6c0b404898a71330d8c1cd923bd268dd2a64adc
1 #ifndef _ASM_X86_PGTABLE_32_H
2 #define _ASM_X86_PGTABLE_32_H
4 #include <asm/pgtable_32_types.h>
6 /*
7 * The Linux memory management assumes a three-level page table setup. On
8 * the i386, we use that, but "fold" the mid level into the top-level page
9 * table, so that we physically have the same two-level page table as the
10 * i386 mmu expects.
12 * This file contains the functions and defines necessary to modify and use
13 * the i386 page table tree.
15 #ifndef __ASSEMBLY__
16 #include <asm/processor.h>
17 #include <asm/fixmap.h>
18 #include <linux/threads.h>
19 #include <asm/paravirt.h>
21 #include <linux/bitops.h>
22 #include <linux/list.h>
23 #include <linux/spinlock.h>
25 struct mm_struct;
26 struct vm_area_struct;
28 extern pgd_t swapper_pg_dir[1024];
29 extern pgd_t initial_page_table[1024];
31 static inline void pgtable_cache_init(void) { }
32 static inline void check_pgt_cache(void) { }
33 void paging_init(void);
36 * Define this if things work differently on an i386 and an i486:
37 * it will (on an i486) warn about kernel memory accesses that are
38 * done without a 'access_ok(VERIFY_WRITE,..)'
40 #undef TEST_ACCESS_OK
42 #ifdef CONFIG_X86_PAE
43 # include <asm/pgtable-3level.h>
44 #else
45 # include <asm/pgtable-2level.h>
46 #endif
48 #if defined(CONFIG_HIGHPTE)
49 #define pte_offset_map(dir, address) \
50 ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
51 pte_index((address)))
52 #define pte_unmap(pte) kunmap_atomic((pte))
53 #else
54 #define pte_offset_map(dir, address) \
55 ((pte_t *)page_address(pmd_page(*(dir))) + pte_index((address)))
56 #define pte_unmap(pte) do { } while (0)
57 #endif
59 /* Clear a kernel PTE and flush it from the TLB */
60 #define kpte_clear_flush(ptep, vaddr) \
61 do { \
62 pte_clear(&init_mm, (vaddr), (ptep)); \
63 __flush_tlb_one((vaddr)); \
64 } while (0)
66 #endif /* !__ASSEMBLY__ */
69 * kern_addr_valid() is (1) for FLATMEM and (0) for
70 * SPARSEMEM and DISCONTIGMEM
72 #ifdef CONFIG_FLATMEM
73 #define kern_addr_valid(addr) (1)
74 #else
75 #define kern_addr_valid(kaddr) (0)
76 #endif
78 #endif /* _ASM_X86_PGTABLE_32_H */