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Method and system for preventing cache lines from being flushed until data stored therein is used

  • US 20060179174A1
  • Filed: 02/02/2005
  • Published: 08/10/2006
  • Est. Priority Date: 02/02/2005
  • Status: Abandoned Application
First Claim
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1. A method of memory utilization in a computer system, the method comprising:

  • responsive to receipt of a DMA transaction from an entity, determining whether a memory request comprising a cache line-sized portion of the DMA transaction is speculative; and

    responsive to a determination that the memory request is not speculative, ensuring that a prefetch lock indicator of a cache line of a cache associated with the memory request is in a locked condition, thereby preventing a cache replacement algorithm (“

    CRA”

    ) from flushing the associated cache line.

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