p4d_page
#define p4d_page(p4d) virt_to_page(p4d_pgtable(p4d))
#define p4d_page(p4d) pfn_to_page(__phys_to_pfn(__p4d_to_phys(p4d)))
#define p4d_page(p4d) (pfn_to_page(p4d_phys(p4d) >> PAGE_SHIFT))
#define p4d_page(p4d) (pfn_to_page(p4d_phys(p4d) >> PAGE_SHIFT))
struct page *p4d_page(p4d_t p4d)
static inline struct page *p4d_page(p4d_t p4d)
#define p4d_page(p4d) pfn_to_page(p4d_pfn(p4d))
#define p4d_page(p4d) NULL
#define p4d_page(p4d) phys_to_page(p4d_val(p4d) & PAGE_MASK)
#define p4d_page(p4d) pfn_to_page(p4d_pfn(p4d))
#define p4d_page(p4d) (pud_page((pud_t){ p4d }))