Method and apparatus for providing execution of system management mode services in virtual mode

  • US 5,987,604 A
  • Filed: 10/07/1997
  • Issued: 11/16/1999
  • Est. Priority Date: 10/07/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for executing instructions in a system management mode in a processor-based system, comprising:

  • a memory for storing instruction sequences by which the processor-based system is processed;

    a processor having a system address space, the processor for executing the stored instruction sequences; and

    wherein the stored instruction sequences cause the processor to;

    (a) configure the processor to operate in a protected mode while in system management mode, the processor operating at an address greater than one megabyte;

    (b) invoke a paging feature of the processor;

    (c) configure the processor to operate in a virtual mode; and

    (d) process the instruction sequences stored, wherein the process steps occur upon the receipt of an instruction to process a system management request.

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