I disagree. IMO the most flexible approach is for glibc to stop using cpuid for RTM detection and rely on the kernel to tell it if RTM is usable. Then we have a single hardware blacklist in the kernel. We need to talk to kernel people about this. Not to mention we might extend a getauxval-type API to prevent applications from using cpuid directly e.g. create a platform header for this with an x86 specific feature interface.
c.
