Abstract
For security and safety reasons, it is essential to ensure memory isolation between processes. The memory manager is thus a critical part of the kernel of an operating system. It is common for kernels to ensure memory isolation through a piece of hardware called memory management unit (MMU). However an MMU by itself does not provide memory isolation. It is only a tool the kernel can use to ensure this property. In this paper we show how a proof assistant such as Coq can be used to model a hardware architecture with an MMU, and an abstract model of microkernel supporting preemptive scheduling and memory management. We proceed by making formally explicit the consistency properties that must be preserved in order for memory isolation to be preserved.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.