FIRST_KERNEL_PGD_NR    7 arch/nds32/mm/mm-nds32.c #define FIRST_KERNEL_PGD_NR	(USER_PTRS_PER_PGD)
FIRST_KERNEL_PGD_NR   19 arch/unicore32/mm/pgd.c #define FIRST_KERNEL_PGD_NR	(FIRST_USER_PGD_NR + USER_PTRS_PER_PGD)