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-rw-r--r--lib/libc/i386/sys/i386_get_ioperm.24
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/libc/i386/sys/i386_get_ioperm.2 b/lib/libc/i386/sys/i386_get_ioperm.2
index aad357bef7a4..f1db970243ac 100644
--- a/lib/libc/i386/sys/i386_get_ioperm.2
+++ b/lib/libc/i386/sys/i386_get_ioperm.2
@@ -56,6 +56,10 @@ and
arguments to the state specified by the
.Fa enable
argument.
+.Pp
+Note that you must have
+.Dq options VM86
+in your kernel configuration file to use these functions.
.Sh RETURN VALUES
Upon successful completion,
.Fn i386_get_ioperm