[PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32

From	Arnd Bergmann <arnd@arndb.de>
Newsgroups	linux.kernel
Subject	[PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32
Date	2016-02-18 15:10 +0100
Message-ID	<r3xrm-6Oj-37@gated-at.bofh.it> (permalink)
References	<r3xrj-6Oj-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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When configuring the kernel for big-endian, we set either BE-8 or BE-32
based on the CPU architecture level. Until linux-4.4, we did not have
any ARMv7-M platform allowing big-endian builds, but now i.MX/Vybrid
is in that category, adn we get a build error because of this:

arch/arm/kernel/module-plts.c: In function 'get_module_plt':
arch/arm/kernel/module-plts.c:60:46: error: implicit declaration of function '__opcode_to_mem_thumb32' [-Werror=implicit-function-declaration]

This comes down to picking the wrong default, ARMv7-M uses BE8
like ARMv7-A does. Changing the default gets the kernel to compile
and presumably works.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 55347662e5ed..ff1637365494 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -723,7 +723,7 @@ config CPU_BIG_ENDIAN
 config CPU_ENDIAN_BE8
 	bool
 	depends on CPU_BIG_ENDIAN
-	default CPU_V6 || CPU_V6K || CPU_V7
+	default CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M
 	help
 	  Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
 
-- 
2.7.0

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[PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32 Arnd Bergmann <arnd@arndb.de> - 2016-02-18 15:10 +0100
  Re: [PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32 Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-02-18 17:10 +0100
    Re: [PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32 Arnd Bergmann <arnd@arndb.de> - 2016-02-18 17:20 +0100
      Re: [PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32 Vladimir Murzin <vladimir.murzin@arm.com> - 2016-02-19 09:50 +0100
        Re: [PATCH 1/9] ARM: ARMv7-M uses BE-8, not BE-32 Arnd Bergmann <arnd@arndb.de> - 2016-02-19 11:20 +0100

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