diff --git a/man2/ptrace.2 b/man2/ptrace.2
index 9580604a1..656770d06 100644
--- a/man2/ptrace.2
+++ b/man2/ptrace.2
@@ -46,7 +46,7 @@
 .\" FIXME Linux 3.1 adds PTRACE_SEIZE, PTRACE_INTERRUPT,
 .\"                and PTRACE_LISTEN.
 .\"
-.TH PTRACE 2 2012-08-03 "Linux" "Linux Programmer's Manual"
+.TH PTRACE 2 2012-10-25 "Linux" "Linux Programmer's Manual"
 .SH NAME
 ptrace \- process trace
 .SH SYNOPSIS
@@ -230,6 +230,10 @@ reversed; that is,
 .I data
 is ignored and the registers are copied to the address
 .IR addr .
+.B PTRACE_GETREGS
+and
+.B PTRACE_GETFPREGS
+are not present on all architectures.
 .TP
 .BR PTRACE_GETSIGINFO " (since Linux 2.3.99-pre6)"
 Retrieve information about the signal that caused the stop.
@@ -263,6 +267,10 @@ reversed; that is,
 .I data
 is ignored and the registers are copied from the address
 .IR addr .
+.B PTRACE_SETREGS
+and
+.B PTRACE_SETFPREGS
+are not present on all architectures.
 .TP
 .BR PTRACE_SETSIGINFO " (since Linux 2.3.99-pre6)"
 Set signal information:
@@ -505,9 +513,12 @@ The
 .I data
 argument is treated as for
 .BR PTRACE_CONT .
-.RI ( addr
-is ignored;
-not supported on all architectures.)
+The
+.I addr
+argument is ignored.
+These requests are currently
+.\" As at 3.7
+supported only on x89.
 .TP
 .B PTRACE_KILL
 Send the tracee a