Add a port to IBM z/Architecture (s390x) running Linux -- Valgrind
side components. (Florian Krohm <britzel@acm.org> and Christian
Borntraeger <borntraeger@de.ibm.com>).  Fixes #243404.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11604 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd_bitmap.h b/drd/drd_bitmap.h
index 57d9423..5450ae5 100644
--- a/drd/drd_bitmap.h
+++ b/drd/drd_bitmap.h
@@ -139,7 +139,7 @@
 /** Log2 of BITS_PER_UWORD. */
 #if defined(VGA_x86) || defined(VGA_ppc32) || defined(VGA_arm)
 #define BITS_PER_BITS_PER_UWORD 5
-#elif defined(VGA_amd64) || defined(VGA_ppc64)
+#elif defined(VGA_amd64) || defined(VGA_ppc64) || defined(VGA_s390x)
 #define BITS_PER_BITS_PER_UWORD 6
 #else
 #error Unknown platform.