DE3587039D1 - Computer mit virtuellem maschinenmodus und mehrfachen schutzringen. - Google Patents

Computer mit virtuellem maschinenmodus und mehrfachen schutzringen.

Info

Publication number
DE3587039D1
DE3587039D1 DE8585402639T DE3587039T DE3587039D1 DE 3587039 D1 DE3587039 D1 DE 3587039D1 DE 8585402639 T DE8585402639 T DE 8585402639T DE 3587039 T DE3587039 T DE 3587039T DE 3587039 D1 DE3587039 D1 DE 3587039D1
Authority
DE
Germany
Prior art keywords
computer
virtual machine
machine mode
multiple protective
protective rings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE8585402639T
Other languages
English (en)
Other versions
DE3587039T2 (de
Inventor
Paul A Karger
Timothy E Leonard
Andrew H Mason
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Equipment Corp
Original Assignee
Digital Equipment Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Equipment Corp filed Critical Digital Equipment Corp
Application granted granted Critical
Publication of DE3587039D1 publication Critical patent/DE3587039D1/de
Publication of DE3587039T2 publication Critical patent/DE3587039T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
    • G06F12/1491—Protection against unauthorised use of memory or access to memory by checking the subject access rights in a hierarchical protection system, e.g. privilege levels, memory rings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • G06F2009/45566—Nested virtual machines
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • G06F2009/45583—Memory management, e.g. access or allocation
DE8585402639T 1985-01-04 1985-12-26 Computer mit virtuellem maschinenmodus und mehrfachen schutzringen. Expired - Fee Related DE3587039T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/688,702 US4787031A (en) 1985-01-04 1985-01-04 Computer with virtual machine mode and multiple protection rings

Publications (2)

Publication Number Publication Date
DE3587039D1 true DE3587039D1 (de) 1993-03-11
DE3587039T2 DE3587039T2 (de) 1993-08-19

Family

ID=24765434

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585402639T Expired - Fee Related DE3587039T2 (de) 1985-01-04 1985-12-26 Computer mit virtuellem maschinenmodus und mehrfachen schutzringen.

Country Status (6)

Country Link
US (1) US4787031A (de)
EP (2) EP0480546A3 (de)
JP (1) JPS61275949A (de)
AU (1) AU584961B2 (de)
CA (1) CA1252572A (de)
DE (1) DE3587039T2 (de)

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Also Published As

Publication number Publication date
EP0480546A3 (en) 1992-09-30
EP0480546A2 (de) 1992-04-15
EP0187603B1 (de) 1993-01-27
AU5180886A (en) 1986-07-10
CA1252572A (en) 1989-04-11
AU584961B2 (en) 1989-06-08
US4787031A (en) 1988-11-22
EP0187603A3 (en) 1989-04-26
JPH0459654B2 (de) 1992-09-22
DE3587039T2 (de) 1993-08-19
EP0187603A2 (de) 1986-07-16
JPS61275949A (ja) 1986-12-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee