Transkernel is inspired by various video game emulators.
Transkernel is a novel OS model for heterogeneous multi-processors. It executes the energy-consuming kernel device driver code of the CPU on a peripheral core; it combines DBT and emulation for bridging ISA gaps and for catering to core asymmetry, respectively.
Device suspend/resume is inefficient: it is bound by physical factors (e.g., slow power transition, low-speed buses), where numerous idle epochs of CPU are wasted; it accounts for most kernel energy consumption.
→ Device suspend/resume should instead be exectued on a much more energy-efficient core -- the peripheral core (e.g., Cortex-M) already existing on a modern SoC.
Code transplant is unsustainable: forming a multikernel out of an existing monolithic kernel (e.g., Linux) while still presenting a single system's image is unsustainable, as the formed kernel (i.e., the peripheral kernel) has to cater for each single corresponding release of the main kernel.
→ The code should instead be executed dynamically through binary translation (DBT).
[ATC’19] "Transkernel: Bridging Monolithic Kernels to Peripheral Cores," Liwei Guo, Shuang Zhai, Yi Qiao, and Felix Xiaozhu Lin, Proc. USENIX Annual Technical Conference, 2019.
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