Courses/Computer Science/CPSC 457.F2014/Lecture Notes/VirtualMemory
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< Courses | Computer Science | CPSC 457.F2014 | Lecture Notes
Virtual Memory
In this session we will consider the basic definition of and traditional need for virtual memory.
We started with a review/refresh of hardware-level memory address translation.
Notes
slides: http://pages.cpsc.ucalgary.ca/~locasto/teaching/2014/CPSC457/talks/vmem2014.pdf
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
Scribe Notes
Readings
- 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"
