启/禁用PCIe设备

# 1.查看需要禁用的设备id
lspci
03:00.0 Processing accelerators: Huawei Technologies Co., Ltd. Device d802 (rev 20)

# 2. 将设备从 PCIe 总线上"热移除"，相当于软件层面拔掉
echo 1 | sudo tee /sys/bus/pci/devices/0000:03:00.0/remove

# 3. 恢复：重新扫描总线或重启系统
echo 1 | sudo tee /sys/bus/pci/rescan