Solving the Lock Holder Preemption Problem in a Multicore Processor-based Virtualization Layer for Embedded Systems

Abstract

In this paper, we explain the reason why the Lock Holder Preemption(LHP) problem is serious when using a multi-core processor based virtualization layer. Then, we introduce two new techniques for avoiding the LHP problem. The existing techniques and new proposed techniques have been implemented on our virtualization layer called SPUMONE, and we measured the results showing that the proposed new techniques reduce the semantic gap to use a virtualization layer on a multi-core processor in embedded systems.