Labs_xv6

usys.S %eax -> used for return code the function will override the eax put the system call number in the eax usys.S is not dealing with system call ar

each jobs ge some tickets that represent its share ofo CPU time.Assuming A holds tickets 0 through 74B 75 through 99the winning ticket simply determin

what is NULL pointer dereference? you will see whatever code is the first bit of code in the program that is running.There's no exception for null der

Requirement: Calling mprotect() should change the protection bits of the page range starting at addr and of len pages to be read only. Prerequisite:Xv

system callsint clone(void(fcn)(void , void ), void arg1, void arg2, void stack). This call creates a new kernel thread which shares the calling proce

https://pdos.csail.mit.edu/6.828/2018/xv6.html

https://www.cse.iitb.ac.in/~mythili/os/labs/lab-xv6-mem/xv6-mem.pdfdeallocuvm 을 사용하면 될것 같음.이것은 virtual address 를 physical address 로 translate 하여,