EFER_FFXSR         40 arch/x86/include/asm/msr-index.h #define EFER_FFXSR		(1<<_EFER_FFXSR)
EFER_FFXSR        368 tools/testing/selftests/kvm/include/x86_64/processor.h #define EFER_FFXSR		(1<<14) /* Enable Fast FXSAVE/FXRSTOR */