USERSTACK         170 kern/arch/mips/vm/dumbvm.c 	stackbase = USERSTACK - DUMBVM_STACKPAGES * PAGE_SIZE;
USERSTACK         171 kern/arch/mips/vm/dumbvm.c 	stacktop = USERSTACK;
USERSTACK         352 kern/arch/mips/vm/dumbvm.c 	*stackptr = USERSTACK;