Busting the Myths around VxWorks #3: VxWorks and Memory Protection

By Bill Graham

A common misconception about VxWorks is that it doesn’t have memory protection. Other forms of this myth maybe that you can only program VxWorks with flat memory tasks and that it doesn't support processes a la Unix. Now I suspect the root of the myth is from the pre-VxWorks version 6.x days and the lack of memory protection in the OS. I think there are also some myths to be busted about memory protection:

Busting some myths around memory protection:

Let me state upfront that I think hardware-supported memory protection is important and necessary feature of modern operating systems. I also think memory protection in RTOSs is represented as absolutely necessary for safety, security and reliability.

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