+ #define ARCH_GET_XCOMP_SUPP 0x1021 + + #define XFEATURE_XTILECFG 17 + #define XFEATURE_XTILEDATA 18 What's the long-term plan for these #defines? I see that ARCH_GET_XCOMP_SUPP is in arch/x86/include/uapi/asm/prctl.h ... so eventually that will show up in distribution /usr/include/asm/prctl.h courtesy of a glibc update. But the XFEATURE bits aren't in a "uapi" file. They are an "enum" in: arch/x86/include/asm/fpu/types.h How will that get to /usr/include? -Tony