Hi All,
On 6/10/2017 9:06 AM, kbuild test robot wrote:
Hi Babu,
[auto build test WARNING on linus/master]
[also build test WARNING on v4.12-rc4 next-20170609]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Babu-Moger/Define-CPU_BIG_ENDIAN-or-warn-for-inconsistencies/20170610-200424
config: microblaze-mmu_defconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 6.2.0
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=microblaze
All warnings (new ones prefixed by >>):
In file included from arch/microblaze/include/uapi/asm/byteorder.h:7:0,
from include/asm-generic/bitops/le.h:5,
from include/asm-generic/bitops.h:34,
from arch/microblaze/include/asm/bitops.h:1,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/asm-generic/bug.h:15,
from arch/microblaze/include/asm/bug.h:1,
from include/linux/bug.h:4,
from include/linux/page-flags.h:9,
from kernel/bounds.c:9:
include/linux/byteorder/big_endian.h:7:2: warning: #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN [-Wcpp]
#warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
^~~~~~~
--
In file included from arch/microblaze/include/uapi/asm/byteorder.h:7:0,
from include/asm-generic/bitops/le.h:5,
from include/asm-generic/bitops.h:34,
from arch/microblaze/include/asm/bitops.h:1,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/asm-generic/bug.h:15,
from arch/microblaze/include/asm/bug.h:1,
from include/linux/bug.h:4,
from include/linux/page-flags.h:9,
from kernel/bounds.c:9:
include/linux/byteorder/big_endian.h:7:2: warning: #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN [-Wcpp]
#warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
^~~~~~~
In file included from arch/microblaze/include/uapi/asm/byteorder.h:7:0,
from include/asm-generic/bitops/le.h:5,
from include/asm-generic/bitops.h:34,
from arch/microblaze/include/asm/bitops.h:1,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/rculist.h:9,
from include/linux/pid.h:4,
from include/linux/sched.h:13,
from arch/microblaze/kernel/asm-offsets.c:13:
include/linux/byteorder/big_endian.h:7:2: warning: #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN [-Wcpp]
#warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
^~~~~~~
<stdin>:1326:2: warning: #warning syscall statx not implemented [-Wcpp]
vim +7 include/linux/byteorder/big_endian.h
1 #ifndef _LINUX_BYTEORDER_BIG_ENDIAN_H
2 #define _LINUX_BYTEORDER_BIG_ENDIAN_H
3
4 #include <uapi/linux/byteorder/big_endian.h>
5
6 #ifndef CONFIG_CPU_BIG_ENDIAN
> 7 #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
8 #endif
9
10 #include <linux/byteorder/generic.h>
11 #endif /* _LINUX_BYTEORDER_BIG_ENDIAN_H */
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Looks like microblaze can be configured to either little or big endian
formats. How about
adding a choice statement to address this.
Here is my proposed patch.
=======================================
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 85885a5..74aa5de 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -35,6 +35,22 @@ config MICROBLAZE
select VIRT_TO_BUS
select CPU_NO_EFFICIENT_FFS
+# Endianness selection
+choice
+ prompt "Endianness selection"
+ default CPU_BIG_ENDIAN
+ help
+ microblaze architectures can be configured for either little or
+ big endian formats. Be sure to select the appropriate mode.
+
+config CPU_BIG_ENDIAN
+ bool "Big endian"
+
+config CPU_LITTLE_ENDIAN
+ bool "Little endian"
+
+endchoice
+
config SWAP
def_bool n
--
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