公开(公告)号：US20220374254A1

公开(公告)日：2022-11-24

申请号：US17687839

申请日：2022-03-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Onegun LEE ,  Jihoon LEE ,  Jun KIM ,  Ilho LEE

IPC: G06F9/455 ,  G06F12/02 ,  G06F12/1081 ,  G06F12/0871 ,  G06F13/16

Abstract: A virtualized system is provided. The virtualized system includes: a memory device; a processor configured to provide a virtualization environment; a direct memory access device configured to perform a function of direct memory access to the memory device; and a memory management circuit configured to manage a core access of the processor to the memory device and a direct access of the direct memory access device to the memory device. The processor is further configured to provide: a plurality of guest operating systems that run independently from each other on a plurality of virtual machines of the virtualization environment; and a hypervisor configured to control the plurality of virtual machines in the virtualization environment and control the memory management circuit to block the direct access when a target guest operating system controlling the direct memory access device, among the plurality of guest operating systems is rebooted.