Function Read64

Kernel/src/arch/x86_64/apic.cpp:92–95

        }
        
        uint64_t Read64(uint32_t reg){
            assert(!"unimplemented");
            return 0;
        }

        void Write64(uint32_t reg, uint64_t data){
            uint32_t low = data & 0xFFFFFFFF;