CPUID_VME
ncr4 |= (cpu_feature & CPUID_VME) != 0 ? CR4_VME : 0;
if (cpu_feature & CPUID_VME)
if (cpu_feature & CPUID_VME)
if (cpu_feature & CPUID_VME)
if ((cpu_feature & CPUID_VME) == 0)