From patchwork Tue Dec 5 09:53:34 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Murzin X-Patchwork-Id: 10092581 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3AFD660348 for ; Tue, 5 Dec 2017 09:54:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1E47829482 for ; Tue, 5 Dec 2017 09:54:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 129D729487; Tue, 5 Dec 2017 09:54:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 872CC29482 for ; Tue, 5 Dec 2017 09:54:18 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=G9MTitn9dPKgBkbDlJNJfi+Z3a0ULGoUWFxHyNNmYCg=; b=iqq hPxTVW8LAcgEo/jDOK3XHPVK2yvtGrjVdHDtzwJfscbQxFc+XIN02xV9f+wdPhMXE/zdd0BSTnI9a o+DdfM2Oard79oWyEVd4VYi+xqTddlKZgSgI+dwbb+Xv0jOxkdR503R/zt0vdvsuR8lNSFJoX0nyc L7Us1+Q3vszMSCFX2GT7iM7NCTUgfJO8W4mfUyXHay86S1fut2gRdbqBIcmGlNUjG4NOr2hoczvBQ Tm9QKvm4D/HgopiYczzr66ybQGd1cFkA3agD3Ocn0MH5WLC1AimhIA+uR5op5RQeO3BLhYeMLqYcX gWsG3TeS28vtiGKi7MmTbfVR/IuKCsg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1eM9ve-0003g6-8Z; Tue, 05 Dec 2017 09:54:18 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1eM9va-0003eU-SY for linux-arm-kernel@lists.infradead.org; Tue, 05 Dec 2017 09:54:16 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D95511435; Tue, 5 Dec 2017 01:53:53 -0800 (PST) Received: from login2.euhpc.arm.com (login2.euhpc.arm.com [10.6.26.144]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id ED3B23F236; Tue, 5 Dec 2017 01:53:52 -0800 (PST) From: Vladimir Murzin To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] ARM: Disable CONFIG_DEBUG_VIRTUAL for NOMMU Date: Tue, 5 Dec 2017 09:53:34 +0000 Message-Id: <1512467614-38194-1-git-send-email-vladimir.murzin@arm.com> X-Mailer: git-send-email 2.0.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171205_015414_970600_2C720211 X-CRM114-Status: UNSURE ( 6.77 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kbuild-all@01.org, linux@armlinux.org.uk, alexandre.torgue@st.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP While running MPS2 platform (NOMMU) with DTB placed below PHYS_OFFSET following warning poped up: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at arch/arm/mm/physaddr.c:42 __virt_to_phys+0x2f/0x40 virt_to_phys used for non-linear address: 00004000 (0x4000) CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc1-5a31bf2-clean+ #2767 Hardware name: MPS2 (Device Tree Support) [<2100bf39>] (unwind_backtrace) from [<2100b3ff>] (show_stack+0xb/0xc) [<2100b3ff>] (show_stack) from [<2100e697>] (__warn+0x87/0xac) [<2100e697>] (__warn) from [<2100e6db>] (warn_slowpath_fmt+0x1f/0x28) [<2100e6db>] (warn_slowpath_fmt) from [<2100c603>] (__virt_to_phys+0x2f/0x40) [<2100c603>] (__virt_to_phys) from [<2116a499>] (early_init_fdt_reserve_self+0xd/0x24) [<2116a499>] (early_init_fdt_reserve_self) from [<2116222d>] (arm_memblock_init+0xb5/0xf8) [<2116222d>] (arm_memblock_init) from [<21161cad>] (setup_arch+0x38b/0x50e) [<21161cad>] (setup_arch) from [<21160455>] (start_kernel+0x31/0x280) [<21160455>] (start_kernel) from [<00000000>] ( (null)) random: get_random_bytes called from init_oops_id+0x17/0x2c with crng_init=0 ---[ end trace 0000000000000000 ]--- Platforms without MMU support run with 1:1 (i.e. linear) memory mapping, so disable CONFIG_DEBUG_VIRTUAL. Fixes: e377cd8221eb ("ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL") Signed-off-by: Vladimir Murzin --- KernelVersion: 4.15-rc1 arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 18c1e7d..6cd616b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -4,7 +4,7 @@ config ARM default y select ARCH_CLOCKSOURCE_DATA select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID - select ARCH_HAS_DEBUG_VIRTUAL + select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_SET_MEMORY