24.21.5. gem5 SimpleMemory
SimpleMemory is a highly simplified memory system. It can replace a more complex DRAM model if you use it e.g. as:
./run --emulator gem5 -- --mem-type SimpleMemory
and it also gets used in certain system-y memories present in ARM systems by default e.g. Flash memory:
[system.realview.flash0] type=SimpleMemory
As of gem5 3ca404da175a66e0b958165ad75eb5f54cb5e772 LKMC 059a7ef9d9c378a6d1d327ae97d90b78183680b2 it did not provide any speedup to the Linux kernel boot according to a quick test.