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description Learn more about: __readmsr
title __readmsr
ms.date 09/02/2019
f1_keywords
__readmsr
helpviewer_keywords
Read Model Specific Register
rdmsr instruction
__readmsr intrinsic
ms.assetid 7ab1f8e8-72cb-4ce4-817d-3e728a3c9716

__readmsr

Microsoft Specific

Generates the rdmsr instruction, which reads the model-specific register specified by register and returns its value.

Syntax

__int64 __readmsr(
   int register
);

Parameters

register
[in] The model-specific register to read.

Return value

The value in the specified register.

Requirements

Intrinsic Architecture
__readmsr x86, x64

Header file <intrin.h>

Remarks

This function is only available in kernel mode, and the routine is only available as an intrinsic.

For more information, see the AMD documentation.

END Microsoft Specific

See also

Compiler intrinsics