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-rw-r--r--lib/libefi/rdwr_efi.c2
-rw-r--r--lib/libspl/include/sys/isa_defs.h17
2 files changed, 17 insertions, 2 deletions
diff --git a/lib/libefi/rdwr_efi.c b/lib/libefi/rdwr_efi.c
index 6995463cf..a914c0df0 100644
--- a/lib/libefi/rdwr_efi.c
+++ b/lib/libefi/rdwr_efi.c
@@ -154,7 +154,7 @@ struct dk_map2 default_vtoc_map[NDKMAP] = {
#if defined(_SUNOS_VTOC_16)
#if defined(i386) || defined(__amd64) || defined(__arm) || \
- defined(__powerpc) || defined(__sparc)
+ defined(__powerpc) || defined(__sparc) || defined(__s390__)
{ V_BOOT, V_UNMNT }, /* i - 8 */
{ V_ALTSCTR, 0 }, /* j - 9 */
diff --git a/lib/libspl/include/sys/isa_defs.h b/lib/libspl/include/sys/isa_defs.h
index 60c6a3bf9..61f4cd96a 100644
--- a/lib/libspl/include/sys/isa_defs.h
+++ b/lib/libspl/include/sys/isa_defs.h
@@ -157,7 +157,22 @@ extern "C" {
#endif
#endif
-#else /* Currently x86_64, i386, arm, powerpc, and sparc are supported */
+/* s390 arch specific defines */
+#elif defined(__s390__)
+#if defined(__s390x__)
+#if !defined(_LP64)
+#define _LP64
+#endif
+#else
+#if !defined(_ILP32)
+#define _ILP32
+#endif
+#endif
+
+#define _BIG_ENDIAN
+#define _SUNOS_VTOC_16
+
+#else /* Currently x86_64, i386, arm, powerpc, s390, and sparc are supported */
#error "Unsupported ISA type"
#endif