Synchronizing an instruction cache and a data cache on demand

Details Synchronizing an instruction cache and a data cache on demand Synchronizing an instruction cache and a data cache on demand

2008-04-15

2008-04-15

Verbrugge, Kevin (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S141000, C710S022000

Reexamination Certificate

active

07360022

ABSTRACT:
In one embodiment, the present invention includes a method for performing a direct memory access (DMA) operation in a virtualized environment to obtain a page from a memory and store the page in a data cache, and synchronizing the page in the data cache and an instruction cache if the page implicates instruction information, otherwise not synchronizing the page. In this manner, synchronizations may be performed on demand. Other embodiments are described and claimed.

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Keir Fraser, et al., “Safe Hardware Access With The Xen Virtual Machine Monitor,” Published at the OASIS ASPLOS 2004 workshop, pp. 1-10.
Thomas Wolfgang Burger, “Cache Coherency in Itanium Processor Software,” May 2005, pp. 1-9.

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