公开(公告)号：US20230376334A1

公开(公告)日：2023-11-23

申请号：US17748725

申请日：2022-05-19

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Masahiro HASEGAWA

IPC: G06F9/455 ,  G06F12/0802

CPC classification number: G06F9/45558 ,  G06F12/0802 ,  G06F2009/45583

Abstract: A semiconductor device includes a plurality of processors capable of executing a plurality of virtual machines and a cache memory. Each of the plurality of virtual machines executes a different operating system from each other. A hypervisor sets allocation information so as to allocate ways of the cache memory which can be used by the virtual machine. When outputting a memory access request, each of the processors outputs virtual machine identification in association with the information memory access request. When the memory access request is not a cache hit, the cache memory selects a way to be replaced data based on the virtual machine identification information and the allocation information.