diff options
Diffstat (limited to 'arch/powerpc/include/asm/page_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/page_64.h | 49 |
1 files changed, 15 insertions, 34 deletions
diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index 932f88dcf6f..88693cef4f3 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -59,39 +59,11 @@ static __inline__ void clear_page(void *addr) : "ctr", "memory"); } -extern void copy_4K_page(void *to, void *from); - -#ifdef CONFIG_PPC_64K_PAGES -static inline void copy_page(void *to, void *from) -{ - unsigned int i; - for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) { - copy_4K_page(to, from); - to += 4096; - from += 4096; - } -} -#else /* CONFIG_PPC_64K_PAGES */ -static inline void copy_page(void *to, void *from) -{ - copy_4K_page(to, from); -} -#endif /* CONFIG_PPC_64K_PAGES */ +extern void copy_page(void *to, void *from); /* Log 2 of page table size */ extern u64 ppc64_pft_size; -/* Large pages size */ -#ifdef CONFIG_HUGETLB_PAGE -extern unsigned int HPAGE_SHIFT; -#else -#define HPAGE_SHIFT PAGE_SHIFT -#endif -#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) -#define HPAGE_MASK (~(HPAGE_SIZE - 1)) -#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) -#define HUGE_MAX_HSTATE (MMU_PAGE_COUNT-1) - #endif /* __ASSEMBLY__ */ #ifdef CONFIG_PPC_MM_SLICES @@ -106,11 +78,19 @@ extern unsigned int HPAGE_SHIFT; #define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT) #define GET_HIGH_SLICE_INDEX(addr) ((addr) >> SLICE_HIGH_SHIFT) +/* + * 1 bit per slice and we have one slice per 1TB + * Right now we support only 64TB. + * IF we change this we will have to change the type + * of high_slices + */ +#define SLICE_MASK_SIZE 8 + #ifndef __ASSEMBLY__ struct slice_mask { u16 low_slices; - u16 high_slices; + u64 high_slices; }; struct mm_struct; @@ -119,8 +99,7 @@ extern unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, unsigned long flags, unsigned int psize, - int topdown, - int use_cache); + int topdown); extern unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr); @@ -130,7 +109,7 @@ extern void slice_set_user_psize(struct mm_struct *mm, unsigned int psize); extern void slice_set_range_psize(struct mm_struct *mm, unsigned long start, unsigned long len, unsigned int psize); -#define slice_mm_new_context(mm) ((mm)->context.id == 0) +#define slice_mm_new_context(mm) ((mm)->context.id == MMU_NO_CONTEXT) #endif /* __ASSEMBLY__ */ #else @@ -158,7 +137,9 @@ do { \ #ifdef CONFIG_HUGETLB_PAGE +#ifdef CONFIG_PPC_MM_SLICES #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA +#endif #endif /* !CONFIG_HUGETLB_PAGE */ @@ -169,7 +150,7 @@ do { \ /* * This is the default if a program doesn't have a PT_GNU_STACK * program header entry. The PPC64 ELF ABI has a non executable stack - * stack by default, so in the absense of a PT_GNU_STACK program header + * stack by default, so in the absence of a PT_GNU_STACK program header * we turn execute permission off. */ #define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ |