CPUID Enumeration and Architectural MSRs
WEBAug 8, 2023 · Processor support for the new mitigation mechanisms is enumerated using the CPUID instruction and several architectural model specific registers (MSRs).
Model-specific register - Wikipedia
WEBA model-specific register (MSR) is any of various control registers in the x86 system architecture used for debugging, program execution tracing, computer performance monitoring, and toggling certain CPU features.
CPU/MSR - SyncHack
WEBMSR (Model Specific Register、モデル固有レジスタ) † MSR は、Pentium より実装された CPU 固有のレジスタです。これらのレジスタは CPU 内部の特殊な制御を行うのに使用します。 MSR は、以下の用途に使用されます。
Reading and Writing Model Specific Registers in Linux
WEBFeb 23, 2024 · Model-specific registers (MSR) are control registers provided by the processor implementation so that system software can interact with a variety of features, including performance monitoring, checking processor status
Intel CPUでのハードウェアパフォーマンスカウンタの使い方 ...
WEBNov 3, 2020 · モダンなCPUはハードウェアパフォーマンスカウンタという機能を備えており， CPU内で発生した様々なイベント (クロック，命令のリタイア，キャッシュヒット・ミ スなど) をハードウェアでカウントし，性能解析に役立てることができる．. ここでは，Intel CPUにおけるハードウェアパフォーマンスカウンタの使用方法を説明する．. 概要.
msr(4) - Linux manual page
WEB/dev/cpu/CPUNUM/msr provides an interface to read and write the model-specific registers (MSRs) of an x86 CPU. CPUNUM is the number of the CPU to access as listed in /proc/cpuinfo . The register access is done by opening the file and seeking to the MSR number as offset in the file, and then reading or writing in chunks of 8 bytes.
WEBIntel® 64 and IA-32 Architectures Software Developer’s Manual Volume 4: Model-Specific Registers NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes:Basic Architecture, Order Number 253665; Instruction Set Reference A-L, Order Number 253666; ...
Model Specific Registers - OSDev Wiki
WEBJul 9, 2023 · Processors from the P6 family onwards (including PentiumPro, Pentium II, III, 4 and Intel Core) have a collection of registers that allow configuration of OS-relevant things such as memory type-range, sysenter/sysexit, local APIC, etc. These MSRs are accessed using special instructions such as RDMSR (Read MSR), WRMSR (Write MSR), and …
RDMSR — Read From Model Specific Register - felixcloutier.com
WEBReads the contents of a 64-bit model specific register (MSR) specified in the ECX register into registers EDX:EAX. (On processors that support the Intel 64 architecture, the high-order 32 bits of RCX are ignored.) The EDX register is loaded with the high-order 32 bits of the MSR and the EAX register is loaded with the low-order 32 bits.
Reading CPU model specific registers on linux - Super User
WEBApr 23, 2016 · I am able to read register 0x00001a2 with the following command: rdmsr 0x00001a2. It gives me some good output according to the datasheet. However I can't do anything handy with this value. I would like to read some model-specific registers from my CPU associated with temperature or voltage or something useful.
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