Transparent replacement of a system processor
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United States of America Patent
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Apr 26, 2011
Grant Date -
May 22, 2008
app pub date -
Feb 15, 2007
filing date -
Nov 21, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for transparently replacing a processor, that receives interrupts in a partitioned computing device, with a replacement processor, is disclosed. The method comprises directing the interrupts to an unchangeable identifier mapped to the processor's identifier and replacing the processor with the replacement processor. An intermediary, such as an I/O APIC, is used for storing the unchangeable identifier. The mapping may use logical mode delivery, physical mode delivery, or interrupt mapping.
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