On Thu, 13 Oct 2016, Grzegorz Andrejczuk wrote:
> Add hwcap2 attribute for x86. Great value in repeating the subject line. And the subject line is crap because this patch does way more than adding hwcap2 .... > Reserve 1st bit of HWCAP2 for exposing Xeon Phi ring 3 monitor/mwait. > With this userspace apps can detect Ring 3 MONITOR/MWAIT instructions. User space cannot detect the instructions. User space can check whether the instructions are enabled. > +/* Kernel enabled Ring 3 MWAIT for Xeon Phi*/ > +#define HWCAP2_PHIR3MWAIT (1 << 0) > +/* upto bit 31 free */ Very useful comment, NOT! Stop documenting the obvious. Thanks, tglx