wrmsr

Write Model Specific Register

WRMSR

Writes EDX:EAX to MSR specified by ECX (Privileged).

Details

The Write Model Specific Register instruction writes EDX:EAX to MSR specified by ECX (Privileged).

Pseudocode Operation

// Writes EDX:EAX to MSR specified by ECX (Privileged)

Example

WRMSR

Encoding

Binary Layout
0F
+0
30
+1
 
Format System
Opcode 0F 30
Extension System

Operands