MSR レジスタ

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https://en.wikipedia.org/wiki/Model-specific_register
Model-specific register - Wikipedia
A 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.… See more
History
With the introduction of the 80386 processor, Intel began introducing "experimental" features that would not necessarily be present in future versions of the processor. The first of these were two "test registers" … See more
External links
• https://www.coreboot.org/Msrtool See more
Using MSRs
Reading and writing to these registers is handled by the rdmsr and wrmsr instructions, respectively. As these are privileged instructions, … See more
See also
• LOADALL See more
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Intel
https://www.intel.com/content/www/us/en/developer/...
Reading and Writing Model Specific Registers in Linux - Intel
WEBFeb 23, 2024 · This article focuses on two of the tools provided by msr-tools: rdmsr and wrmsr. Reading MSRs using RDMSR. The rdmsr tool enables reading the value of a …
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GitHub - intel/msr-tools
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Reading CPU model specific registers on linux - Super User
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osdev.org
https://wiki.osdev.org/Model_Specific_Registers
Model Specific Registers - OSDev Wiki
Accessing Model Specific Registers
Additional x86_64 Registers
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Each MSR that is accessed by the RDMSR and WRMSR group of instructions is identified by a 32-bit integer. MSRs are 64-bit wide. The presence of MSRs on your processor is indicated by CPUID.01h:EDX[bit 5].
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To Access MSR Registers Admin Rights Required From …
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How do I fix the MSR issues? : r/Unmineable - Reddit
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What are MSR registers?
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 RDTSC.
Model Specific Registers - OSDev Wiki
wiki.osdev.org
What does MSR_ mean?
•MSRs with an “MSR_” prefix are model specific with respect to address functionalities. The column “Model Availability” lists the model encoding value(s) within the Pentium 4 and Intel Xeon processor family at the specified register address. The model encoding valu e of a processor can be queried using CPUID.
Intel® 64 and IA-32 Architectures Software Developer’s Manual
intel.com
What is an example of an MSR?
Examples for rather well-known MSRs are the memory type range registers (MTRRs) and the address-range registers (ARRs). ^ "10.6.2 Test Registers". 80386 PROGRAMMER'S REFERENCE MANUAL (PDF).
Model-specific register - Wikipedia
en.wikipedia.org
How does MSR work in Linux?
Use of the Linux msr kernel module creates a pseudo file "/dev/cpu/ x /msr" (with a unique x for each processor or processor core). A user with permissions to read and/or write to this file can use the file I/O API to access these registers. The msr-tools package provides a reference implementation.
Model-specific register - Wikipedia
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Intel
https://www.intel.com/content/www/us/en/developer/...
CPUID Enumeration and Architectural MSRs - Intel
- Processors Affected by Speculative Execution Side Channel Issues. Refer to the …
  CPUID Enumeration for Mitigations. Processor support for the new mitigation mechanisms …
  IA32_ARCH_CAPABILITIES MSR. Additional features are enumerated by the …
  IA32_SPEC_CTRL MSR. The IA32_SPEC_CTRL MSR bits are defined as logical …
  IA32_PRED_CMD MSR. The IA32_PRED_CMD MSR gives software a way to issue …
  See full list on intel.com
Microsoft Learn
https://learn.microsoft.com/.../rdmsr--read-msr-
rdmsr (Read MSR) - Windows drivers | Microsoft Learn
WEBOct 25, 2023 · Get help at Microsoft Q&A. The rdmsr command reads a Model-Specific Register (MSR) value from the specified address.
- Modes: Kernel mode only
- Targets: Live debugging only
- Platforms: All
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RDMSR
Kernel mode only
Platforms:All
Live debugging only
Félix Cloutier
https://www.felixcloutier.com/x86/rdmsr
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 …
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Intel
https://www.intel.com/content/dam/develop/external/...
[PDF]
Intel® 64 and IA-32 Architectures Software Developer’s Manual
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 …
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File Size:1MB
Page Count:472
man7.org
https://www.man7.org/linux/man-pages/man4/msr.4.html
msr(4) - Linux manual page - man7.org
WEBmsr(4) Kernel Interfaces Manual msr(4) NAME top msr - x86 CPU MSR access device DESCRIPTION top /dev/cpu/CPUNUM/msr provides an interface to read and write the …
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Microsoft Learn
https://learn.microsoft.com/.../rdmsr--read-msr-
rdmsr (MSR の読み取り) - Windows drivers | Microsoft Learn
WEBApr 1, 2024 · この記事の内容. rdmsr コマンドは、指定されたアドレスからモデル固有レジスタ (MSR) の値を読み取ります。. rdmsr Address パラメーター. 住所 MSR のアドレ …
Félix Cloutier
https://www.felixcloutier.com/x86/wrmsr
WRMSR — Write to Model Specific Register - felixcloutier.com
WEBDescription ¶. Writes the contents of registers EDX:EAX into the 64-bit model specific register (MSR) specified in the ECX register. (On processors that support the Intel 64 …
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Model-specific register - Wikipedia

Reading and Writing Model Specific Registers in Linux - Intel

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Model Specific Registers - OSDev Wiki

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Model Specific Registers - OSDev Wiki

Intel® 64 and IA-32 Architectures Software Developer’s Manual

Model-specific register - Wikipedia

Model-specific register - Wikipedia

CPUID Enumeration and Architectural MSRs - Intel

rdmsr (Read MSR) - Windows drivers | Microsoft Learn

RDMSR — Read From Model Specific Register - felixcloutier.com

Intel® 64 and IA-32 Architectures Software Developer’s Manual

msr(4) - Linux manual page - man7.org

rdmsr (MSR の読み取り) - Windows drivers | Microsoft Learn

WRMSR — Write to Model Specific Register - felixcloutier.com

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