Vmware, Inc.

Cyrien Laplace

Andrei Warkentin

Alexander Fainkichen

Ye Li

Regis Duchesne

Examples construct a bootloader address space using a page fault exception. A bootloader executing in machine address (MA) space determines the MA at which the bootloader has been loaded into memory. The bootloader calculates a difference between an expected virtual address (VA) and the loaded MA. The bootloader defines a page table mapping the bootloader MA to an expected VA, and sets an exception handling vector to point to the expected VA. When a memory management unit (MMU) utilizing the defined page table for address translation is enabled, a page fault exception occurs. The page fault exception handling resumes execution of the bootloader at the expected VA via an exception handling vector pointing thereto.

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Cambridge, MA, United States of America

Cyrien Laplace