From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9713572 for ; Tue, 28 Sep 2021 15:42:09 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 7F3786124A; Tue, 28 Sep 2021 15:42:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632843729; bh=CBSGNM1iI7xF61HbwvXZEXTVfHCXl92PwnqkdtpkV1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qQp2Rc+gxrZWKUTIrH3JjAUcWeGw2yzUfkG+ML3ZsrcHhyepXKHUoBIyHe+tCWfjg PoFaLNBt4/esG+rK//VyRcFicAcaXx+Drl+WJ41c4yaJ2GPXhV757N23A/JW7rdnjC W5zgU+CGM+lZhxzn2Gq4wNZm+QKt5RrHC2vnPcqJaRmbWx0lrYCTZ0TM/gTgxd6rZk Ek5Dy1Ijyq0M0jd5nx0bT1pQI1s0FlGdXc/+o0hybiXKAirpQQgTipH/Bms3arCckk rbtlbVMXOBIQhudI4dshES6QJ5yeFXxnBYZ0S4936PrhGVQrVvNUAQt0k3FJN/wdlZ G8viTvkjBCcRw== From: Arnd Bergmann To: Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Ard Biesheuvel , Linus Walleij , Nathan Chancellor , Nick Desaulniers , llvm@lists.linux.dev, Vladimir Murzin Subject: [PATCH 05/14] ARM: ARMv7-M uses BE-8, not BE-32 Date: Tue, 28 Sep 2021 17:41:34 +0200 Message-Id: <20210928154143.2106903-6-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210928154143.2106903-1-arnd@kernel.org> References: <20210928154143.2106903-1-arnd@kernel.org> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnd Bergmann 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. Tested-by: Vladimir Murzin https://lore.kernel.org/all/1455804123-2526139-2-git-send-email-arnd@arndb.de/ Signed-off-by: Arnd Bergmann --- 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 8355c3895894..82aa990c4180 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -750,7 +750,7 @@ 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. -- 2.29.2