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-rw-r--r--man2/mprotect.24
1 files changed, 4 insertions, 0 deletions
diff --git a/man2/mprotect.2 b/man2/mprotect.2
index 16457cb59a..dd1b93076c 100644
--- a/man2/mprotect.2
+++ b/man2/mprotect.2
@@ -136,6 +136,7 @@ in the middle of a region currently protected as
would result in three mappings:
two read/write mappings at each end and a read-only mapping in the middle.)
.SH CONFORMING TO
+.BR mprotect ():
POSIX.1-2001, POSIX.1-2008, SVr4.
.\" SVr4 defines an additional error
.\" code EAGAIN. The SVr4 error conditions don't map neatly onto Linux's.
@@ -144,6 +145,9 @@ POSIX says that the behavior of
is unspecified if it is applied to a region of memory that
was not obtained via
.BR mmap (2).
+
+.BR pkey_mprotect ()
+is a nonportable Linux extension.
.SH NOTES
On Linux, it is always permissible to call
.BR mprotect ()