lab1 finished
!!!
asd
Merge branch 'lab2' of /home/steven/Downloads/JOS into lab2
modify boot_alloc
debuging phase
All exercises done.
Merge branch 'lab2' into lab3

Conflicts:
	kern/monitor.c
All exercise done.
Challenge 1 finished.
Merge branch 'lab3' into lab4

Conflicts:
	kern/trap.c