4 Virtual memory Assume a 64 bit machine with 40 bit addresses, and 16GB of actual memory. Memory blocks are 4K 1. How many b

4 Virtual memory Assume a 64 bit machine with 40 bit addresses, and 16GB of actual memory. Memory blocks are 4K 1. How many bits in the virtual memory INDEX and OFFSET fields? 2. What fields do you need in a page table entry, and how many bits are needed for each? How many bytes do you need for each page table entry? (each entry is allocated in a whole number of bytes, even if there are extra unused bits) reasonable size for 3. How big is the page table for this machine? Is it a 16GB of memory (why?)



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