Explain in detail how the sets of squares, rectangles, and r…

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OS_Structure_4b Micrоkernel The cоntext fоr this question is the sаme аs the previous question. 4. You аre building an OS using a microkernel-based approach following the principles of the L3 microkernel. The processor architecture you are building this OS for has the following features:   A byte-addressable 32-bit hardware address space.  Paged virtual memory system (8KB pages) with a processor register called PTBR that points to the page table in memory to enable hardware address translation.  A TLB which DOES NOT support Address space IDs and requires a flush on address space switching.  A pair of hardware-enforced segment registers (lower and upper bound of virtual addresses) which limit the virtual address space that can be accessed by a process running on the processor.  A virtually-indexed virtually-tagged processor cache (ignore potential coherence issues for the scope of this question).   You end up with the following subsystems that each need to be in a separate protection domain.  A: Requires 2^32 bytes virtual address space.  B: Requires 2^30 bytes virtual address space.  C: Requires 2^30 bytes virtual address space.  D: Requires 200*2^20 bytes virtual address space.  E: Requires 300*2^20 bytes virtual address space.  F: Requires 500*2^20 bytes virtual address space.  (b) (4 points) Assume that the following subsystems execute on the processor one after the other: A->B->C->D->E->F. What is the minimum number of TLB flushes and Cache flushes required (if any) in your design? What changes could you make to the processor architecture features to reduce the number of flushes required?

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