From: Florian Krohm <flo2030@eich-krohm.de>
Date: Wed, 30 Jul 2025 14:08:32 +0000 (+0000)
Subject: s390: New Principles of Operations is out
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d34c697d35ba405efd1a20eaa705f63d0a5d2b1e;p=thirdparty%2Fvalgrind.git

s390: New Principles of Operations is out
---

diff --git a/README.s390 b/README.s390
index 528eafc5c..d2236d29f 100644
--- a/README.s390
+++ b/README.s390
@@ -42,6 +42,6 @@ Reading Material
 (1) ELF ABI s390x Supplement
     https://github.com/IBM/s390x-abi/releases
 (2) z/Architecture Principles of Operation
-    https://publibfp.dhe.ibm.com/epubs/pdf/a227832d.pdf
+    https://www.ibm.com/docs/en/module_1678991624569/pdf/SA22-7832-14.pdf
 (3) Collection of z/Architecture publications
     https://linux.mainframe.blog/zarchitecture-principles-of-operation/