Kernel Internals

0 / 12 solved

Question Tags Difficulty Success

1. Crossing the Ring

protectiondual_mode +1

Medium 90%

system_callstrap +1

Medium 79%

3. Direct Memory Access

dmaprogrammed_io +3

Medium 77%

4. One Byte Per Syscall

system-callstrap-overhead +2

Medium 63%

5. Two Hundred Threads One Core

user-level-threadskernel-threads +2

Medium 23%

context_switchtlb +1

Medium 100%

7. Stop the World

interruptshardware +1

Medium 81%

8. Quiet the Machine

interruptsmultiprocessor +1

Medium 88%

9. Installing Your Own Trap

trap-tableprivilege-levels +2

Medium 67%

10. Two Defunct Rows

zombie-processprocess-states +2

Medium 38%

11. Two Saves One Switch

context-switchtrap +2

Hard —

12. Shared Memory Separate Descriptors

clonethreads +2

Hard —

protectiondual_modekernel_internalssystem_callstrapdmaprogrammed_ioioossystem-callstrap-overheadbufferingcalculationuser-level-threadskernel-threadsblocking-ioschedulingcontext_switchtlbinterruptshardwaremultiprocessortrap-tableprivilege-levelskernel-modesecurityzombie-processprocess-statesproc-filesystemsigchldcontext-switchkernel-stacklimited-direct-executionclonethreadsfile-descriptor-tableaddress-space+1+2+3+4+5

Learning Resources

Operating Systems: Three Easy Pieces, Chapters 6, 23, 36