Alias address support

Details Alias address support Alias address support

G - Physics

06

F

354/224

G06F 12/08 (2006.01) G06F 12/10 (2006.01)

Patent

CA 1301354

ABSTRACT An apparatus and method for resolving the problem of alias addressing in virtual memory systems which employ write back caches. Specifically, in virtual memory systems aliasing can occur. Aliasing occurs when there is a possibility that multiple virtual memory addresses will map to the same physical memory address. This condition can result in the data at the common physical address in main memory including only a portion of the modifications made by the central processing unit or input/output device into the several cache locations. The subject application resolves this conflict for addresses located within the operating system using one method and for addresses other than operating system addresses using a second method.

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