公开(公告)号：JP2004005443A

公开(公告)日：2004-01-08

申请号：JP2003045463

申请日：2003-02-24

Applicant: IBM

Inventor： JAIN VINIT ,  MESSING JEFFREY PAUL ,  SHARMA RAKESH ,  SHARMA SATYA PRAKESH ,  VENKATSUBRA VENKAT

IPC: G06F9/455 ,  G06F9/46 ,  G06F9/50 ,  G06F13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for transferring data from one partition of a partitioned system to another partition without using a network. SOLUTION: When a first partition needs to transfer data to a second partition, data located in a portion of the first partition of a partitioned memory of the system is marked as read-only data to be indicated to firmware or hardware of the partitioned system. When notified, the firmware or hardware of the partitioned system re-assigns a memory location including the data to the second partition, and passes a pointer to the second partition. The second partition checks to see whether or not the data is actually read-only data. If so, the data is read, or else it is not read. After reading the data, the second partition notifies the firmware or the hardware so that, as a result, the memory location of the data can be re-assigned to the first partition. COPYRIGHT: (C)2004,JPO