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Techniques for servicing fetch requests utilizing coalesing page table entries

  • US 8,601,223 B1
  • Filed: 10/24/2006
  • Issued: 12/03/2013
  • Est. Priority Date: 09/19/2006
  • Status: Active Grant
First Claim
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1. A method of accessing memory comprising:

  • determining if a fetched page table entry is a coalesced page table entry from a contiguous attribute of the fetched page table entry, wherein;

    a first bit of the contiguous attribute specifies a type of encoding;

    a plurality of other bits of the contiguous attribute specifies an actual number of contiguous pages when the first bit is set to a first state;

    the plurality of other bits of the contiguous attribute specifies a power of two representation of the number of contiguous pages when the first bit is set to a second state;

    determining if the coalesced page table entry can service one or more fetch requests pending in a queue; and

    redirecting the one or more appropriate fetch requests in the queue to the coalesced page table entry if the coalesced page table entry can service the fetch requests.

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