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#ifdef CONFIG_MMU
/* the upper-most page table pointer */
extern pmd_t *top_pmd;
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static inline pmd_t *pmd_off_k(unsigned long virt)
{
return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt);
}
struct mem_type {
pteval_t prot_pte;
unsigned int prot_l1;
unsigned int prot_sect;
unsigned int domain;
};
const struct mem_type *get_mem_type(unsigned int type);
extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
#endif
#ifdef CONFIG_ZONE_DMA
extern phys_addr_t arm_dma_limit;
#else
#define arm_dma_limit ((u32)~0)
#endif
#ifdef CONFIG_DMA_CMA
extern phys_addr_t arm_lowmem_limit;
#endif
void __init bootmem_init(void);
void arm_mm_memblock_reserve(void);
#ifdef CONFIG_DMA_CMA
void dma_contiguous_remap(void);
#endif
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