pgd_page_paddr 618 arch/arm64/include/asm/pgtable.h #define pud_offset_phys(dir, addr) (pgd_page_paddr(READ_ONCE(*(dir))) + pud_index(addr) * sizeof(pud_t)) pgd_page_paddr 819 arch/arm64/mm/mmu.c !(pgd_none(pgd) || pgd_page_paddr(pgd) == __pa_symbol(bm_pud))) {