System, method, and computer program product for prohibiting unauthorized access to protected memory regions
AssigneeInternational Business Machines Corporation
InventorsBradley Ryan Harrington, Kevin Brian Locke
Life of this patent
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Abstract
A system, method, and computer program product are disclosed for prohibiting unauthorized access to a protected region of memory. A protected region of memory and a trusted region of memory are both specified. A call to access a location within the protected region of memory is received. An origination location of the call is then determined. In response to a determination that the origination location is within the trusted region, the call is permitted to access the protected region of memory. In response to a determination that the origination location is outside of the trusted region, the call is prohibited from accessing the protected region of memory.
Claims36
A method for prohibiting unauthorized access to a protected region of memory, said method comprising the steps of:
- specifying a protected region of memory;
- specifying a trusted region of memory;
- receiving a call to access said protected region of memory;
- determining an origination location of said call;
- and
- in response to a determination that said origination location is within said trusted region, permitting said call to access said protected region of memory.
A data processing system for prohibiting unauthorized access to a protected region of memory, comprising:
- a protected region of memory;
- a trusted region of memory;
- a call being received to access said protected region of memory;
- said system including a CPU executing code for determining an origination location of said call;
- and
- in response to a determination that said origination location is within said trusted region, said CPU executing code for permitting said call to access said protected region of memory.
A computer program product in a data processing system for prohibiting unauthorized access to a protected region of memory, comprising:
- instruction means for specifying a protected region of memory;
- instruction means for specifying a trusted region of memory;
- instruction means for receiving a call to access said protected region of memory;
- instruction means for determining an origination location of said call;
- and
- in response to a determination that said origination location is within said trusted region, instruction means for permitting said call to access said protected region of memory.
Dependencies are inferred from the claim text.