Boots – shoes – and leggings
Patent
1991-11-04
1995-07-25
Black, Thomas G.
Boots, shoes, and leggings
395575, 364DIG1, 3642615, 3642616, 364268, 364280, 3642819, 364285, G06F 900, G06F 1100
Patent
active
054370337
ABSTRACT:
A system and method for continuous operation of a virtual machine system having operation modes including a guest mode in which virtual machines are operated and a nonguest mode in which a virtual machine monitor for controlling the virtual machines is operated. The continuous guest is a virtual machine which does not stop executing operation at the occurrence of a failure due to program error of the virtual machine monitor. A main storage is provided with two areas. One of the two areas is a continuous guest area having the same host absolute address in the nonguest mode as a guest absolute address in the guest mode, the area is used by the continuous guest which is a virtual machine which continues to operate on transition of the operation mode from the guest mode to the nonguest mode. The other is an area in which a program module for dispatching the continuous guest in response to the transition of the operation mode from the guest mode to the nonguest mode. The continuous guest is allocated to the guest area on transition of the operation mode from the guest mode to the nonguest mode. Occurrence of a failure due to a program error of the virtual machine monitor is detected and by starting the program module for dispatching the continuous guest in response to the detection of the occurrence of the failure, the operation of the continuous guest does not stop executing.
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Inoue Taro
Ohtsuki Toru
Tanaka Shunji
Umeno Hidenori
Yamamoto Tadashi
Amsbury Wayne
Black Thomas G.
Hitachi , Ltd.
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