pfn_pud
#define pfn_pud(pfn,prot) __pud(__phys_to_pud_val((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
pud_t pfn_pud(unsigned long pfn, pgprot_t pgprot)
static inline pud_t pfn_pud(unsigned long pfn, pgprot_t prot)
static inline pud_t pfn_pud(unsigned long page_nr, pgprot_t pgprot)