Intel's Recommended Reading List for Developers
Intel® 64 and IA-32 Architectures Software Developer’s Manual – Volume 3A: System Programming Guide, Part 1
Intel® 64 and IA-32 Architectures Software Developer’s Manual – Volume 2B: Instruction Set Reference, N-Z
Intel® 64 and IA-32 Architectures Software Developer’s Manual – Volume 2A: Instruction Set Reference, A-M
Intel® 64 and IA-32 Architectures Software Developer’s Manual – Volume 1: Basic Architecture
HITBSecConf2008 Presentation Announcement: Remote Code Execution Through Intel CPU Bugs. Kris Kaspersky.