Re: [v3,11/41] mips: reuse asm-generic/barrier.h

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On Tue, Jan 26, 2016 at 11:24:02AM +0100, Peter Zijlstra wrote:

> Yeah, this goes under the header: memory-barriers.txt is _NOT_ a
> specification (I seem to keep repeating this).

Do we want this ?

---
 Documentation/memory-barriers.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index a61be39c7b51..433326ebdc26 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -1,3 +1,4 @@
+
 			 ============================
 			 LINUX KERNEL MEMORY BARRIERS
 			 ============================
@@ -5,6 +6,22 @@
 By: David Howells <dhowells@xxxxxxxxxx>
     Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
 
+==========
+DISCLAIMER
+==========
+
+This document is not a specification; it is intentionally (for the sake of
+brevity) and unintentionally (due to being human) incomplete. This document is
+meant as a guide to using the various memory barriers provided by Linux, but
+in case of any doubt (and there are many) please ask.
+
+I repeat, this document is not a specification of what Linux expects from
+hardware.
+
+=====
+INDEX
+=====
+
 Contents:
 
  (*) Abstract memory access model.




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