pmd_num 235 arch/riscv/mm/init.c uintptr_t pmd_num; pmd_num 240 arch/riscv/mm/init.c pmd_num = (va - PAGE_OFFSET) >> PGDIR_SHIFT; pmd_num 241 arch/riscv/mm/init.c BUG_ON(pmd_num >= NUM_EARLY_PMDS); pmd_num 242 arch/riscv/mm/init.c return (uintptr_t)&early_pmd[pmd_num * PTRS_PER_PMD];