- Booting
- OS Organization
- Addressing
- Virtual Memory
- Interrupts and Exceptions
- System Calls
- Multiprocessors
- Processes and Threads
- Scheduling
- File Systems
- How are stack frames layed out?
- How can we use that knowledge to write a backtrace command?
- Physical Pages vs. Virtual Pages
- What are the differences between virtual, linear, and physical addresses?
- Why do we use virtual memory? which problems does it solve?
- How are permissions used?
- What is an environment?
- How does it relate to threads and processes in more traditional OSes?
- What state must each environment maintain?
- How do we handle an interrupt, what are the necessary steps?
- What is the Task State Segment used for?
- Why do we need system calls?
- How do we perform a system call?
- What setup do user space environments require?
- What pieces are shared, which are unique?
- What is the difference between multiprocess and multiprocessor?
- What changes are needed to our kernel to support SMP?
- Why do we need locking? can we make our version of JOS more concurrent?
- What is the difference between preemptive and cooperative scheduling?
- What is do we need to implement preemptive scheduling?
- How does IPC work in JOS, what is the control flow when a message is sent, and received?
- Why implement COW fork?
- What syscalls are needed to implement it in userspace?
- What happens if you don't copy pages when implementing COW?
- Why do we need a page fault handler to implement COW fork?
- What is a super block?
- Why do we need indirect blocks? why not use only direct blocks?
- Why is spawn more efficent then fork, followed by exec?