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-rw-r--r--coregrind/m_syswrap/syswrap-generic.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/coregrind/m_syswrap/syswrap-generic.c b/coregrind/m_syswrap/syswrap-generic.c
index 1fbd1fe9..9f4025c4 100644
--- a/coregrind/m_syswrap/syswrap-generic.c
+++ b/coregrind/m_syswrap/syswrap-generic.c
@@ -1958,6 +1958,11 @@ ML_(generic_POST_sys_shmctl) ( ThreadId tid,
* call, mmap (aka sys_mmap) which takes the arguments in the
* normal way and the offset in bytes.
*
+ * - On s390x-linux there is mmap (aka old_mmap) which takes the
+ * arguments in a memory block and the offset in bytes. mmap2
+ * is also available (but not exported via unistd.h) with
+ * arguments in a memory block and the offset in pages.
+ *
* To cope with all this we provide a generic handler function here
* and then each platform implements one or more system call handlers
* which call this generic routine after extracting and normalising