不给力的因特尔

在VirtualBox里面安装Fedora 14 x86_64版本失败，显示如下错误：

This kernel requires an x86-64 CPU, but only detected an i686 CPU.
Unable to boot - please use a kernel appropriate for your CPU.

VirtualBox的文档说允许64位客户机要打开APIC支持，我打开后还是出现一样的错误。再看文档，原来需要硬件虚拟化支持：

VirtualBox's 64-bit guest support (added with version 2.0) and multiprocessing (SMP, added with version 3.0) both require hardware virtualization to be enabled. (This is not much of a limitation since the vast majority of today's 64-bit and multicore CPUs ship with hardware virtualization anyway; the exceptions to this rule are e.g. older Intel Celeron and AMD Opteron CPUs.)

我的本本是Dell Inspiron 14v，CPU是因特尔奔腾T4500，不支持VT-x技术。以前攒台式机的时候就要求CPU一定得支持硬件虚拟化，调研发现Intel偏低端的CPU就是不支持VT-x，而AMD就厚道多了，64位的CPU基本都支持AMD-V，最后选择了AMD的CPU。