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A virtualization layer makes it possible to compose multiple functionalities on a multi-core processor with minimum modifications of OS kernels and applications. A multi-core processor is a good candidate to compose various software independently developed for dedicated processors into one multi-core processor to reduce both the hardware and development cost. In this paper, we present SPUMONE, which...
Multi-core processors are being increasingly adopted for embedded systems because they improve performance, power consumption and lower development cost. Composing multiple operating systems on a multi-core processor enhances the reusability of software when developing rich functional embedded systems. Multiple OS environments enable the product to use two versions of an operating system at the same...
Service-level reuse development has drawn great attention in the research field of embedded systems. In this paper, we present reusable integrity management services for future embedded systems based on virtualization technique. A series of problems related with system security and reliability are addressed by adopting these services to existing system designs. Moreover, we have implemented the prototype...
In this paper, a runtime self-diagnosis and self-recovery infrastructure is presented for embedded systems. Different from existing methods of off-line tracing system logs, our research focuses on analyzing system kernel data structures from runtime memory periodically against predefined constraints. If any violations have been detected, recovery functions are invoked. The prototype system is developed...
Recently, for embedded systems, the complexity of the software is rapidly increasing due to the advancement in the fields of multimedia and network. Due to these developments, it is difficult to find the cause of problems in system. This is especially true when the causes of problems are buried in the kernel layer, finding them more difficult to compare with the user layer. One reason of the difficulties...
This paper introduces a new dependable operating system project, called DEOS, started in 2006, and scheduled to continue for six years. In this project, a safety extension mechanism called P-Bus is to be designed, and implemented in the Linux kernel so that a future dependability attribute is implemented with P-Bus. A hardware abstraction layer, called SPUMONE, is introduced so that a light-weight...
In this paper, online system-level self-healing support is presented for embedded systems. Different from off-line log analysis methods used by conventional intrusion detection systems, our research focuses on analyzing runtime kernel data structures hence perform self-diagnosis and self-healing. Inside the infrastructure, self-diagnosis and self-healing solutions have been implemented based on several...
Currently, for embedded systems, the complexity of the software is rapidly increasing due to the advance in the fields of multimedia and network. It is difficult to find the cause of problems. Especially, when the causes of problems are buried in the kernel layer, finding them from application's layer is not easy. One reason of the difficulties comes from that there are not effective tools and functions...
The kernel objects consist of critical kernel data structures and system call functions, which are the most important data for a system, should be protected as first-class candidates. In this paper, a lightweight system-level detection and recovery infrastructure is presented for embedded systems. Inside the infrastructure, specific runtime protections have been implemented for different kernel objects,...
The emergence of functional embedded systems such as cell-phones and digital appliances brought up a new issue, building a system supporting both real-time and rich services. One of the solutions is leveraging a hypervisor to integrate an RTOS and a commodity OS into a single device. However, this approach induces the limitation of application deployment; all the high priority tasks should reside...
In this paper, a lightweight system level monitoring infrastructure known as kernel objects monitoring infrastructure (KOMI) is presented for commercial-off-the-shelf (COTS) embedded systems. The kernel objects consist of certain critical kernel data structures and entry points of system calls, which are protected as first-class objects inside the system. KOMI provides specific runtime protections...
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