Resetting a processor in an isolated execution environment
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United States of America Patent
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Jul 27, 2004
Grant Date -
N/A
app pub date -
Dec 29, 2000
filing date -
Mar 31, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method, apparatus, and system for invoking a reset process in response to a logical processor being individually reset is disclosed. When a last logical processor operating within a platform in an isolated execution mode and associated with an isolated area of memory is reset, it is reset without clearing a cleanup flag. Subsequently, an initializing physical processor invokes an initialization process that determines that the cleanup flag is set. The initialization process invokes the execution of a processor nub loader, and if the cleanup flag is set, the processor nub loader scrubs the isolated area of memory and invokes a controlled close for the initializing physical processor which clears the cleanup flag. The initializing physical processor then re-performs the initialization process. Upon the second iteration of the initialization process, with the cleanup flag not set, a new clean isolated area of memory is created for the initializing physical processor.
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