On Thu, Aug 27, 2020 at 03:49:03PM +0800, Feng Tang wrote: > End users frequently want to know what features their processor > supports, independent of what the kernel supports. > > /proc/cpuinfo is great. It is omnipresent and since it is provided by > the kernel it is always as up to date as the kernel. But, it can be > ambiguous about processor features which can be disabled by the kernel > at boot-time or compile-time.
Let me once again suggest we use CPUID faulting to 'fix' this. We really should clear the CPUID bits when the kernel explicitly disables things. https://lkml.kernel.org/r/1552431636-31511-18-git-send-email-fenghua...@intel.com
