英特尔驱动的安装教学(intel驱动程序如何安装)

因为 Intel SGX 的驱动从 5.x 内核主线才开始支持，因此 5.x 以下的内核版本要使用SGX的功能，需要额外编译安装驱动。

以 Ubuntu 18.04为例，安装驱动也非常简单，从 Intel 的官网下载驱动 bin 包，直接执行即可：

$ sudo ./sgx_linux_x64_driver_1.41.binUnpacking Intel SGX Driver ... done.Verifying the integrity of the install package ... done.Installing Intel SGX Driver .../tmp/sgx-driver-F6eUsR ~/workspace/sgxinstall -d /opt/intel/sgxdriver/packageinstall -d /opt/intel/sgxdriver/scriptscp -r package/* /opt/intel/sgxdriver/packageinstall scripts/* /opt/intel/sgxdriver/scripts~/workspace/sgxCreating symlink /var/lib/dkms/sgx/1.41/source ->                 /usr/src/sgx-1.41DKMS: add completed.Kernel preparation unnecessary for this kernel.  Skipping...Building module:cleaning build area...\'make\' KDIR=/lib/modules/4.15.0-153-generic/build....Signing module:Generating a new Secure Boot signing key:Can\'t load /var/lib/shim-signed/mok/.rnd into RNG140349876240832:error:2406F079:random number generator:RAND_load_file:Cannot open file:../crypto/rand/randfile.c:88:Filename=/var/lib/shim-signed/mok/.rndGenerating a RSA private key...........................................................................................+++++......................+++++writing new private key to \'/var/lib/shim-signed/mok/MOK.priv\'----- - /var/lib/dkms/sgx/1.41/4.15.0-153-generic/x86_64/module/intel_sgx.koEFI variables are not supported on this system/sys/firmware/efi/efivars not found, aborting.cleaning build area...DKMS: build completed.intel_sgx:Running module version sanity check. - Original module   - No original module exists within this kernel - Installation   - Installing to /lib/modules/4.15.0-153-generic/updates/dkms/depmod.....DKMS: install completed.You may need to run \"/sbin/modprobe intel_sgx (--allow-unsupported)\" or reboot system manually!uninstall.sh script generated in \"/opt/intel/sgxdriver\".$

安装完成后，加载内核模块，应该能在 /dev 下看到 sgx 样的设备。如果没有，说明这款 CPU 硬件不支持 SGX。

从安装过程中可以看出 SGX 驱动安装采用了 DKMS 的方式，这是什么呢？DKMS 的全称是 Dynamic Kernel Module Support，它使一些设备商可以以源码的方式提供驱动版本，当内核升级时，会自动编译出与新内核兼容的驱动版本。