发明授权
- 专利标题： Virtual machine system and virtual machine system control method for controlling program execution on a plurality of processors that have a plurality of privileged modes
- 专利标题（中）： 用于控制具有多个特权模式的多个处理器上的程序执行的虚拟机系统和虚拟机系统控制方法
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申请号： US13577311申请日： 2011-09-07
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公开(公告)号： US08898666B2公开(公告)日： 2014-11-25
- 发明人: Masahiko Saito , Teruto Hirota , Hiroo Ishikawa
- 申请人： Masahiko Saito , Teruto Hirota , Hiroo Ishikawa
- 申请人地址： US CA Torrance
- 专利权人： Panasonic Intellectual Property Corporation of America
- 当前专利权人： Panasonic Intellectual Property Corporation of America
- 当前专利权人地址： US CA Torrance
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2010-284490 20101221
- 国际申请： PCT/JP2011/005019 WO 20110907
- 国际公布： WO2012/086106 WO 20120628
- 主分类号： G06F9/455
- IPC分类号： G06F9/455 ; G06F9/50 ; G06F21/74
摘要：
A virtual machine system is provided with a processor having only two privileged modes, a low privileged mode and a high privileged mode, and achieves both a security function for protecting digital copyrighted works or the like and an operating system switching function that guarantees system reliability. The virtual machine system is provided with a first and a second processor and executes a hypervisor on the first processor in the high privileged mode. An operating system on the second processor is executed by cooperation between the hypervisor running on the first processor and a program running on the second processor in low privileged mode. This eliminates the need for running the hypervisor on the second processor in the high privileged mode, thus allowing for execution on the second processor in the high privileged mode of a program for implementing the security function.
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