> > This shouldn't be necessary; for systems that don't have virtualization > extensions, the comment explains why setting X86_FEATURE_VMMCALL is safe. > > But it is also wrong, because you can run a 32-bit kernel as a guest on > a 64-bit processor, and then it should set X86_FEATURE_VMMCALL because > the processor has the vmmcall instruction and not Intel's vmcall. >
Paolo, I'm running this on a bare metal machine (no virtualization) with a 32-bit AMD i486 class cpu. Should the feature be showing up in /proc/cpuinfo under the 'flags' line? It does on my machine, and it looked wrong to me. - Matthew