通过查看中的标志，可以很容易地检查是否存在Intel虚拟化（VMX）支持并启用它
/proc/cpuinfo
但到目前为止，AMD虚拟化（SVM）一直通过
/proc/cpuinfo
即使在BIOS/平台已经禁用SVM功能时也是如此。最后，对于Linux 6.7，这种疏忽正在得到纠正。
从即将到来的Linux 6.7内核周期开始——尽管可能会作为对现有内核系列的修复进行后移植——是Red Hat的一个补丁，不再通过
/proc/cpuinfo
用于在BIOS中禁用SVM的情况。这与Intel VMX在被平台/BIOS禁用时不通过/proc/cpuinfo显示的行为相匹配，这使得通过这个方便且广泛使用的接口检查虚拟化是否可用变得更加容易。
此修补程序
by Red Hat's Paolo Bonzini has been queued into TIP's x86/cpu branch ahead of the Linux 6.7 merge window coming up in about one month. For AMD (and Hygon) processors it will now read the appropriate MSR to verify whether SVM has been disabled -- and if so to clear the CPU capability so it won't show in /proc/cpuinfo. Up to now the only indication of AMD SVM being disabled by the BIOS was appearing in the kernel log -- or simply KVM virtualization failing to work. A small but useful change.
