How is non-SMM code prevented from doing the same stuff this SMM routine does? | Hacker News

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qb45 on April 5, 2013 | parent | context | favorite | on: AMI-Bios Sourcecode and UEFI Signing Key leaked?

How is non-SMM code prevented from doing the same stuff this SMM routine does?

mjg59 on April 5, 2013 [–]

The flash controller knows if you're in SMM or not.

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