Luna/kernel/include/misc/MSR.h

#pragma once
#include <stdint.h>

#define IA32_EFER_MSR 0xC0000080

struct MSR
{
    void write(uint64_t value);
    uint64_t read();

    MSR(uint32_t msr_num);

    static void write_to(uint32_t msr_num, uint64_t value);
    static uint64_t read_from(uint32_t msr_num);

    static void with_value_of(uint32_t msr_num, void (*callback)(uint64_t&));
    void with_value(void (*callback)(uint64_t&));

  private:
    uint32_t m_msr_num;
};