Intel Corporation
SEAMLESS SYSTEM MANAGEMENT MODE CODE INJECTION

Abstract:

Methods and apparatus for seamless system management mode (SMM) code injection. A code injection listener is installed in BIOS during booting of the computer system or platform. During operating system (OS) runtime operation a secure execution mode code injection image comprising injected code is received and delivered to the BIOS. The processor execution mode is switched to a secure execution mode such as SMM, and while in the secure execution mode the injected code is accessed and executed on the processor to effect one or more changes such as patching processor microcode, a profile or policy reconfiguration, and a security fix. The solution enables platform changes to be effected during OS runtime without having to reboot the system.