OS

Working on HW for the course "Operating System" (https://stepik.org/course/1780/info)

Mapping logical address to the physical address for x86 arch

Paging: Logical address in x86 (Long Mode)

64-bit address
Bits	63 ... 48	47 ... 39	38 ... 30	29 ... 21	20 ... 12	11 ... 0
Values	[63:48] = 47 bit	PLM4	DirectoryPtr	Directory	Table	Offset

Read ELF header

1. To get the address of main entry point
2. To get the size of memory required to load the program

Thread experiments

1. Priority boost (Windows)
2. Robin round algorithm
3. Thread synchronization
   1. Alternation lock
   2. IntentionFlags
   3. Peterson Algorithm
   4. Peterson Greedy
   5. OptimizedPeterson
4. Atomic increment and CAS for amomic RWM register uisng LL (load-linked) and SC (store-conditional)
5. Mutual exculison with Read-Modify-Write register nad Ticket lock
6. Readers|Writers: Read-Write lock