[S390] fix sparsemem related compile error with allnoconfig on s390
On s390 make allnoconfig fails with the following build error:
arch/s390/mm/init.c: In function 'show_mem':
arch/s390/mm/init.c:55: error: implicit declaration of function 'pfn_valid'
make[1]: *** [arch/s390/mm/init.o] Error 1
make: *** [arch/s390/mm] Error 2
This problem can by fixed ensuring that ARCH_SELECT_MEMORY_MODEL
is always turned on.
Signed-off-by: Hans-Joachim Picht <hans@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1d03508..93acb3c 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -308,6 +308,9 @@
config ARCH_SPARSEMEM_DEFAULT
def_bool y
+config ARCH_SELECT_MEMORY_MODEL
+ def_bool y
+
source "mm/Kconfig"
comment "I/O subsystem configuration"