Inventec Corp.

Yu-Hui Wang

Ying-Chih Lu

A method for executing a system management interrupt (SMI) is provided. When a power on self test (POST) is executed, a first identifier is generated and stored into a system management mode block of a memory. During a process for starting an operating system (OS), the first identifier is read from the system management mode block as a second identifier, and the second identifier is stored into an OS block of the memory. When the OS wants to use a system management interrupt, the first identifier and the second identifier are respectively read from the system management mode block and the OS block. Afterwards, it is determined whether the first identifier and the second identifier are the same. If the first identifier and the second identifier are the same, the SMI is executed.

Method for executing system management interrupt by using identifiers

A data protection method for damaged memory cells is provided. A power-on self-test (POST) is executed, and an initial backup memory is reserved in a memory. An operating system (OS) is executed, and data is loaded from a kernel region of the OS in the memory into a mirror region, so that when a processor accesses the data in the kernel region, it also accesses the data in the mirror region. An uncorrectable error (UE) is detected to determine a damaged page, and a backup page is selected from the initial backup memory or dynamically obtained from the OS to back up data in the damaged page. A mapping address of the damaged page and backup page are recorded into a page mapping table in a memory controller. Accordingly, when the OS accesses the damaged page, the memory controller accesses the backup page instead according to the page mapping table.

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Taipei, Taiwan

Yu-Hui Wang