WriteMsr64.c File Reference

#include <Library/RegisterFilterLib.h>

Go to the source code of this file.

Functions
UINT64 EFIAPI	AsmWriteMsr64 (IN UINT32 Index, IN UINT64 Value)

Detailed Description

AsmWriteMsr64 function

Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file WriteMsr64.c.

Function Documentation

AsmWriteMsr64()

UINT64 EFIAPI AsmWriteMsr64	(	IN UINT32	Index,
		IN UINT64	Value
	)

Writes a 64-bit value to a Machine Specific Register(MSR), and returns the value.

Writes the 64-bit value specified by Value to the MSR specified by Index. The 64-bit value written to the MSR is returned. No parameter checking is performed on Index or Value, and some of these may cause CPU exceptions. The caller must either guarantee that Index and Value are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.

Parameters

Index	The 32-bit MSR index to write.
Value	The 64-bit value to write to the MSR.

Returns

Value

Definition at line 30 of file WriteMsr64.c.