Hypervisor security using SMM
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United States of America Patent
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Sep 23, 2014
Grant Date -
Mar 4, 2010
app pub date -
Aug 26, 2008
filing date -
Aug 26, 2008
priority date (Note) -
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Abstract
Methods, systems, apparatuses and program products are disclosed for protecting computers and similar equipment from undesirable occurrences, especially attacks by malware. Invariant information, such as pure code and some data tables may be enrolled for later revalidation by code operating outside the normal context. For example, a periodic interrupt may invoked a system management mode interrupt service routine to discover whether code regions accessible to Protected Mode programs have become corrupted or otherwise changed, such as by tampering from untrusted or untrustworthy programs that have easy access only to protected mode operation.
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