21. The performance drawbacks of simple redirector implementations can be largely addressed by kernel-level drivers that avoid context switches . 22. Once all CPUs have executed a context switch , then all preceding RCU read-side critical sections will have completed. 23. On uniprocessor systems, a thread running into a locked mutex must sleep and hence trigger a context switch . 24. This design suffered from the need to flush CPU caches following context switches between 68k and PowerPC code. 25. Minimizing such context switches required a large amount of effort and planning, making adoption of mixed binaries somewhat unpopular. 26. If it does, there is another context switch and memory mapping to complete the call into the user-space server. 27. User level code was run using preemptive multitasking, context switches were forced on I / O operations or clock ticks. 28. In response to an interrupt, there is a context switch , and the code for the interrupt is loaded and executed. 29. Code can instantly switch between them, allowing for fast context switches between an application and an OS or between two threads. 30. The main issue with this type of rootkit is that hidden processes are still able to run despite various context switches .
