UC_FP_XSTATE - Linux

Symbol: UC_FP_XSTATE

arch/x86/kernel/signal_32.c

unsafe_put_user(UC_FP_XSTATE, &frame->uc.uc_flags, Efault);

arch/x86/kernel/signal_64.c

flags = UC_FP_XSTATE | UC_SIGCONTEXT_SS;