Realized a while back: near-minimal MPU and memcpy are sufficient to emulate a MMU with remotely-tolerable performance.
@cr1901 Roughly MPU is MMU but without the ability to remap virtual to physical addresses.
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@RichFelker So the CPU would do the address translation on a fault to complement the MPU? -
@cr1901 No, it would do memcpy on fault. -
@RichFelker What does the memcpy accomplish? If the MPU only understands physical addresses, but you want the CPU to operate on virtual...
End of conversation
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