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Arrangement for limiting access to addresses by a consumer process instigating work in a channel adapter based on virtual address mapping

  • US 6,598,144 B1
  • Filed: 12/12/2001
  • Issued: 07/22/2003
  • Est. Priority Date: 12/12/2001
  • Status: Active Grant
First Claim
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1. A method in a host computing system, the method comprising:

  • assigning, by an operating system resource, a prescribed virtual address space and a corresponding mapping value for use by a consumer process for execution of a memory access;

    loading a unique translation map entry having the corresponding mapping value for the consumer process into an address translator configured for controlling the memory access to a physical address space assigned for access to a host channel adapter; and

    outputting by the address translator a work notification, received from the consumer process and specifying a prescribed virtual destination address within the prescribed virtual address space, to a corresponding mapped physical destination address within the mapped physical address space based on the unique translation map entry, the host channel adapter configured for detecting the work notification at the mapped physical destination address.

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