Work-In-Progress:: Real-Time RPC for Hybrid Dual-OS System

Dong Pan; Zhe Jiang; Alan Burns; Yan Ding; Jun Ma

Work-In-Progress: Real-Time RPC for Hybrid Dual-OS System

Dong Pan, Zhe Jiang, Alan Burns, Yan Ding, Jun Ma

Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

For the power and space sensitive systems such as automotive/avionic computers, an important trend is isolating and integrating multiple Operating Systems (OSs) in one physical platform, which is named as hybrid multi-OS system. Generally, in a commonly used hybrid dual-OS system, a RTOS (realtime operating system) and a GPOS (general-purpose operating system) are integrated. Cooperation (among the OSs) is a vital feature of a hybrid system to obtain the necessary capabilities, and inter-OS communication is the key. However, it is difficult to satisfy the real-time metrics of inter-OS communication required by the RTOS, due to the uncertainty in communication maintenance and the time-sharing policy of the GPOS. This paper aims to build a time predictable and secure RPC mechanism (i.e., the primary and critical communication unit in a hybrid multi-OS system). Afterwards, a real-time RPC scheme (termed RTRGRPC) is proposed, which is applied to a ready-built TrustZonebased hybrid dual-OS system (i.e., TZDKS). RTRG-RPC achieves accurate time control through three mechanisms: SGI message transforming, interrupt handler RPC servicing, and priorityswapping. Evaluations show that RTRG-RPC can achieve realtime predictability and can also reduce priority inversion.

Original language	English
Title of host publication	2019 IEEE Real-Time Systems Symposium (RTSS)
Publisher	IEEE
Pages	1-4
Number of pages	4
Publication status	Published - 15 Dec 2019

Publication series

Name	Real-Time Systems Symposium (RTSS)
Publisher	IEEE

Bibliographical note

Access to Document

[4.3]Work-In-Progress -- Real-Time RPC for Hybrid Dual-OS System
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Accepted author manuscript, 342 KB

Cite this

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title = "Work-In-Progress:: Real-Time RPC for Hybrid Dual-OS System",

abstract = "For the power and space sensitive systems such as automotive/avionic computers, an important trend is isolating and integrating multiple Operating Systems (OSs) in one physical platform, which is named as hybrid multi-OS system. Generally, in a commonly used hybrid dual-OS system, a RTOS (realtime operating system) and a GPOS (general-purpose operating system) are integrated. Cooperation (among the OSs) is a vital feature of a hybrid system to obtain the necessary capabilities, and inter-OS communication is the key. However, it is difficult to satisfy the real-time metrics of inter-OS communication required by the RTOS, due to the uncertainty in communication maintenance and the time-sharing policy of the GPOS. This paper aims to build a time predictable and secure RPC mechanism (i.e., the primary and critical communication unit in a hybrid multi-OS system). Afterwards, a real-time RPC scheme (termed RTRGRPC) is proposed, which is applied to a ready-built TrustZonebased hybrid dual-OS system (i.e., TZDKS). RTRG-RPC achieves accurate time control through three mechanisms: SGI message transforming, interrupt handler RPC servicing, and priorityswapping. Evaluations show that RTRG-RPC can achieve realtime predictability and can also reduce priority inversion.",

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AU - Pan, Dong

AU - Jiang, Zhe

AU - Burns, Alan

AU - Ding, Yan

AU - Ma, Jun

PY - 2019/12/15

Y1 - 2019/12/15

N2 - For the power and space sensitive systems such as automotive/avionic computers, an important trend is isolating and integrating multiple Operating Systems (OSs) in one physical platform, which is named as hybrid multi-OS system. Generally, in a commonly used hybrid dual-OS system, a RTOS (realtime operating system) and a GPOS (general-purpose operating system) are integrated. Cooperation (among the OSs) is a vital feature of a hybrid system to obtain the necessary capabilities, and inter-OS communication is the key. However, it is difficult to satisfy the real-time metrics of inter-OS communication required by the RTOS, due to the uncertainty in communication maintenance and the time-sharing policy of the GPOS. This paper aims to build a time predictable and secure RPC mechanism (i.e., the primary and critical communication unit in a hybrid multi-OS system). Afterwards, a real-time RPC scheme (termed RTRGRPC) is proposed, which is applied to a ready-built TrustZonebased hybrid dual-OS system (i.e., TZDKS). RTRG-RPC achieves accurate time control through three mechanisms: SGI message transforming, interrupt handler RPC servicing, and priorityswapping. Evaluations show that RTRG-RPC can achieve realtime predictability and can also reduce priority inversion.

AB - For the power and space sensitive systems such as automotive/avionic computers, an important trend is isolating and integrating multiple Operating Systems (OSs) in one physical platform, which is named as hybrid multi-OS system. Generally, in a commonly used hybrid dual-OS system, a RTOS (realtime operating system) and a GPOS (general-purpose operating system) are integrated. Cooperation (among the OSs) is a vital feature of a hybrid system to obtain the necessary capabilities, and inter-OS communication is the key. However, it is difficult to satisfy the real-time metrics of inter-OS communication required by the RTOS, due to the uncertainty in communication maintenance and the time-sharing policy of the GPOS. This paper aims to build a time predictable and secure RPC mechanism (i.e., the primary and critical communication unit in a hybrid multi-OS system). Afterwards, a real-time RPC scheme (termed RTRGRPC) is proposed, which is applied to a ready-built TrustZonebased hybrid dual-OS system (i.e., TZDKS). RTRG-RPC achieves accurate time control through three mechanisms: SGI message transforming, interrupt handler RPC servicing, and priorityswapping. Evaluations show that RTRG-RPC can achieve realtime predictability and can also reduce priority inversion.

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BT - 2019 IEEE Real-Time Systems Symposium (RTSS)

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