From patchwork Fri Jan 10 12:31:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Vincenzo Frascino X-Patchwork-Id: 11327291 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BEB22138C for ; Fri, 10 Jan 2020 12:31:52 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 96D7A20721 for ; Fri, 10 Jan 2020 12:31:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="elzWtA2h" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96D7A20721 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=LZBnkl8EkgHxpFnum68AzHOyW7VV6Ogj+yeRsgiLs40=; b=elzWtA2htyB6g7 m6ppMzqgfa+z9gDFpAyZJn1MBvULPcGMglb5jHYfFQSubFnX6PTkdyjAc6U4QrEI++kTvZU2WgEM4 0FD2nhmgtIHsyRZAbl6ktyzW1YlqilOerMBq2/fJZpdyQM7jqyQLRi7t/cXet2MkEO/yMDcCcmQdx 782OMAvplQnNBWDQLFoGQeCCAlN2wjPsyfSt4BqPazEPU23DntECNTBXozbMGpZfxkn6mIydffGNA bQMMLcKbADi3FK7gZ+eIVyII5ia5q73FPqh8Pr20cIy5oXBJjekhrDeTV0/NblECly1i3HPpUjmfu 6uVChkOQr8M2vfUw8tvQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iptSA-0003XX-CU; Fri, 10 Jan 2020 12:31:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iptS7-0003Wc-J1 for linux-arm-kernel@lists.infradead.org; Fri, 10 Jan 2020 12:31:48 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B11601063; Fri, 10 Jan 2020 04:31:44 -0800 (PST) Received: from e119884-lin.cambridge.arm.com (e119884-lin.cambridge.arm.com [10.1.196.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0E0943F534; Fri, 10 Jan 2020 04:31:43 -0800 (PST) From: Vincenzo Frascino To: linux@armlinux.org.uk Subject: [PATCH] arm: Fix Kexec compilation issue. Date: Fri, 10 Jan 2020 12:31:25 +0000 Message-Id: <20200110123125.51092-1-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200110_043147_669583_76B12EA7 X-CRM114-Status: GOOD ( 12.94 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [217.140.110.172 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vincenzo.frascino@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org To perform the reserve_crashkernel() operation kexec uses SECTION_SIZE to find a memblock in a range. SECTION_SIZE is not defined for nommu systems. Trying to compile kexec in these conditions results in a build error: linux/arch/arm/kernel/setup.c: In function ‘reserve_crashkernel’: linux/arch/arm/kernel/setup.c:1016:25: error: ‘SECTION_SIZE’ undeclared (first use in this function); did you mean ‘SECTIONS_WIDTH’? crash_size, SECTION_SIZE); ^~~~~~~~~~~~ SECTIONS_WIDTH linux/arch/arm/kernel/setup.c:1016:25: note: each undeclared identifier is reported only once for each function it appears in linux/scripts/Makefile.build:265: recipe for target 'arch/arm/kernel/setup.o' failed Make KEXEC depend on MMU to fix the compilation issue. Cc: Russell King Signed-off-by: Vincenzo Frascino Reviewed-by: Vladimir Murzin --- arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ba75e3661a41..bc99582bdc85 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1904,7 +1904,7 @@ config XIP_DEFLATED_DATA config KEXEC bool "Kexec system call (EXPERIMENTAL)" depends on (!SMP || PM_SLEEP_SMP) - depends on !CPU_V7M + depends on MMU select KEXEC_CORE help kexec is a system call that implements the ability to shutdown your