1 use x86::cpuid::{cpuid, CpuIdResult}; 2 3 use crate::smp::cpu::ProcessorId; 4 5 /// 获取当前cpu的apic id 6 #[inline] 7 pub fn current_cpu_id() -> ProcessorId { 8 let cpuid_res: CpuIdResult = cpuid!(0x1); 9 let cpu_id = (cpuid_res.ebx >> 24) & 0xff; 10 return ProcessorId::new(cpu_id); 11 } 12 13 /// 重置cpu 14 pub unsafe fn cpu_reset() -> ! { 15 // 重启计算机 16 unsafe { x86::io::outb(0x64, 0xfe) }; 17 loop {} 18 } 19