Vol. 3A 1-5
ABOUT THIS MANUAL
Chapter 16 — Interpreting Machine-Check Error Codes. Gives an example of how to interpret the error codes
for a machine-check error that occurred on a P6 family processor.
Chapter 17 — Debug, Branch Profile, TSC, and Resource Monitoring Features. Describes the debugging
registers and other debug mechanism provided in Intel 64 or IA-32 processors. This chapter also describes the
time-stamp counter.
Chapter 18 — Performance Monitoring. Describes the Intel 64 and IA-32 architectures’ facilities for monitoring
performance.
Chapter 19 — Performance-Monitoring Events. Lists architectural performance events. Non-architectural
performance events (i.e. model-specific events) are listed for each generation of microarchitecture.
Chapter 20 — 8086 Emulation. Describes the real-address and virtual-8086 modes of the IA-32 architecture.
Chapter 21 — Mixing 16-Bit and 32-Bit Code. Describes how to mix 16-bit and 32-bit code modules within the
same program or task.
Chapter 22 — IA-32 Architecture Compatibility. Describes architectural compatibility among IA-32 proces-
sors.
Chapter 23 — Introduction to Virtual Machine Extensions. Describes the basic elements of virtual machine
architecture and the virtual machine extensions for Intel 64 and IA-32 Architectures.
Chapter 24 — Virtual Machine Control Structures. Describes components that manage VMX operation. These
include the working-VMCS pointer and the controlling-VMCS pointer.
Chapter 25 — VMX Non-Root Operation. Describes the operation of a VMX non-root operation. Processor oper-
ation in VMX non-root mode can be restricted programmatically such that certain operations, events or conditions
can cause the processor to transfer control from the guest (running in VMX non-root mode) to the monitor software
(running in VMX root mode).
Chapter 26 — VM Entries. Describes VM entries. VM entry transitions the processor from the VMM running in
VMX root-mode to a VM running in VMX non-root mode. VM-Entry is performed by the execution of VMLAUNCH or
VMRESUME instructions.
Chapter 27 — VM Exits. Describes VM exits. Certain events, operations or situations while the processor is in VMX
non-root operation may cause VM-exit transitions. In addition, VM exits can also occur on failed VM entries.
Chapter 28 — VMX Support for Address Translation. Describes virtual-machine extensions that support
address translation and the virtualization of physical memory.
Chapter 29 — APIC Virtualization and Virtual Interrupts. Describes the VMCS including controls that enable
the virtualization of interrupts and the Advanced Programmable Interrupt Controller (APIC).
Chapter 30 — VMX Instruction Reference. Describes the virtual-machine extensions (VMX). VMX is intended
for a system executive to support virtualization of processor hardware and a system software layer acting as a host
to multiple guest software environments.
Chapter 31 — Virtual-Machine Monitor Programming Considerations. Describes programming consider-
ations for VMMs. VMMs manage virtual machines (VMs).
Chapter 32 — Virtualization of System Resources. Describes the virtualization of the system resources. These
include: debugging facilities, address translation, physical memory, and microcode update facilities.
Chapter 33 — Handling Boundary Conditions in a Virtual Machine Monitor. Describes what a VMM must
consider when handling exceptions, interrupts, error conditions, and transitions between activity states.
Chapter 34 — System Management Mode. Describes Intel 64 and IA-32 architectures’ system management
mode (SMM) facilities.
Chapter 35 — Model-Specific Registers (MSRs). Lists the MSRs available in the Pentium processors, the P6
family processors, the Pentium 4, Intel Xeon, Intel Core Solo, Intel Core Duo processors, and Intel Core 2
processor family and describes their functions.
Chapter 36 — Intel
®
Processor Trace. Describes details of Intel
®
Processor Trace.
Chapter 37 — Introduction to Intel
®
Software Guard Extensions. Provides an overview of the Intel
®
Soft-
ware Guard Extensions (Intel
®
SGX) set of instructions.