Cache structure for a computer system providing support for secure objects
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Aug 24, 2016
filing date -
Jun 26, 2009
priority date (Note) -
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Abstract
A method (and structure) protects confidentiality and integrity of information in a secure object from other software on the system. An object-id value that identifies software currently executing on a CPU (Central Processing Unit) is stored, the value having a predetermined standard value when software that is not a secure object is executing. Each block of information in the cache is associated with an ownership value that is used to store an identification of the software that owns the information in the block. When software attempts to access information in one of the blocks, the object-id of the currently executing software is compared with the ownership value associated with the block being accessed. Access to the block is allowed if the object-id of the currently executing software matches the ownership value of the block.
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