Symbol: LINUX_VSYSCALL_SZ
sys/amd64/linux/linux_sysvec.c
653
if ((frame->tf_rip & (LINUX_VSYSCALL_SZ - 1)) != 0)
sys/amd64/linux/linux_sysvec.c
655
code = (frame->tf_rip - LINUX_VSYSCALL_START) / LINUX_VSYSCALL_SZ;