...This flag was added in order to make it safe to switch away from the signal handler with swapcontext (3). Without this flag, a subsequently handled signal will corrupt the state…...tfs64 (2) 2.6 statx (2) 4.11 stime (2) 1.0 subpage_prot (2) 2.6.25 PowerPC/PowerPC64 only swapcontext (2) 2.6.3 PowerPC/PowerPC64 only switch_endian (2) 4.1 PowerPC64 only swapo…