Courses/Computer Science/CPSC 457.F2013/Lecture Notes/VirtualMemory
In this session we will consider the basic definition of and traditional need for virtual memory.
It is worthwhile contemplating the meaning of the term "virtual" for a while.
(recall memory addressing)
The code that calls sbrk() to expand the heap memory region and write to it via memset() to exhaust available memory. sample run
declaration of the mem_map array (for iterating over page frame meta-data for the purposes of allocation management)
the struct page representing the items in the mem_map array (i.e., meta-data about the physical page frames)
the kernel OOM Killer code
- MOS: 3.3 "Virtual Memory" (this subsection also contains a review of paging and TLBs)
- MOS: 3.7.3 "Segmentation with Paging: The Intel Pentium"