From: Florian Krohm <florian@eich-krohm.de>
Date: Thu, 23 Aug 2012 00:44:22 +0000 (+0000)
Subject: Add verbiage about hardware facilities.
X-Git-Tag: svn/VALGRIND_3_9_0~754
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=978fa74f3d5e7cdfc07d28305c192c26e384cf09;p=thirdparty%2Fvalgrind.git

Add verbiage about hardware facilities.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12886
---

diff --git a/README.s390 b/README.s390
index 6802c4ac98..3c3e29f964 100644
--- a/README.s390
+++ b/README.s390
@@ -20,6 +20,18 @@ Limitations
   instead of just 1 read/write.
 
 
+Hardware facilities
+-------------------
+Valgrind does not require that the host machine has the same hardware
+facilities as the machine for which the client program was compiled.
+This is convenient. The JIT compiler will translate the client instructions
+according to the facilities available on the host.
+This means, though, that probing for hardware facilities by issuing
+instructions from that facility and observing whether SIGILL is thrown
+may not work. As a consequence, programs that attempt to do so may
+behave differently. It is believed that this is a rare use case.
+
+
 Recommendations
 ---------------
 Applications should be compiled with -fno-builtin to avoid