Data processing system for keeping isolation between logical...

Details Data processing system for keeping isolation between logical... Data processing system for keeping isolation between logical...

2006-07-18

2006-07-18

Beausoliel, Robert W. (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S001000, C714S006130

Reexamination Certificate

active

07080291

ABSTRACT:
When a subject of access of a transaction from an IO device is not any resource allocated to a logical partition to which the device having issued the transaction belongs, a report as an error is sent to a CPU, while the transaction is finished on the IO bus. To prevent a transaction between IO devices from gaining access to any resource in another logical partition, one access permission bit is provided for each combination of all the IO devices, and the access is permitted only when the bit has a predetermined value. A reset signal is provided by IO slot so that only an IO slot allocated to a specific logical partition can be reset without affecting any other logical partition. A transaction issued from an IO device in one logical partition is prevented from gaining access to a resource in another logical partition, while proper error handling can be performed.

REFERENCES:
patent: 4340933 (1982-07-01), Miu et al.
patent: 4843541 (1989-06-01), Bean et al.
patent: 5590278 (1996-12-01), Barthel et al.
patent: 5659756 (1997-08-01), Hefferon et al.
patent: 6381682 (2002-04-01), Noel et al.
patent: 6836855 (2004-12-01), Arndt
patent: 2002/0010811 (2002-01-01), Arndt et al.

Affiliated with

Also associated with

Rating

Data processing system for keeping isolation between logical... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data processing system for keeping isolation between logical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing system for keeping isolation between logical... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3536694