Yiren Zhang

Simulating a fast disk with physics cores and more elegent porting about fu740

1

Mock disk: * A new option, "MOCK", is added. When "MOCK=1" and "SMP >= 2", a secondary core will act as a block disk device. Other cores submit block requests...

syscall-exec

1

finish sys_exec which in place of the old one(indeed a spawn). simplify some code.

finish chapter13/exec