From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754558AbbK0OEg (ORCPT ); Fri, 27 Nov 2015 09:04:36 -0500 Received: from mout.kundenserver.de ([212.227.17.10]:49688 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751165AbbK0OEb (ORCPT ); Fri, 27 Nov 2015 09:04:31 -0500 From: Arnd Bergmann To: Andrew Morton Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Daniel Cashman , linux-arch@vger.kernel.org Subject: [PATCH] ARM: avoid ARCH_MMAP_RND_BITS for NOMMU Date: Fri, 27 Nov 2015 15:04:03 +0100 Message-ID: <2874133.c4GDUf0t6t@wuerfel> User-Agent: KMail/4.11.5 (Linux/3.16.0-10-generic; KDE/4.11.5; x86_64; ; ) MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K0:7fz1Vkz5W2C5qC4dhkHMGiZirl1/SWMT/JeDJe0xYUmIOl6HBBf a9ptrZEZJNa0w5eo/UnPcUfrXMwMwgqZDLJjAux0Ue8H4YDdvpHc1iajmzLDF3aVZlZC5A0 uxGamitRSjrkGnAXdaQnrELo6m0zwMsTLZ6bUb8JoE0KwmCCCeg2ezQhstkfMcBbPZs6zY6 EmcP09UuyUv10D4k5FJ1Q== X-UI-Out-Filterresults: notjunk:1;V01:K0:5VTOnTQ2wWs=:waXjyAGukhG6knffHy7bTF E0PFRTxoV+TSZIdJx2U75g63klzs6P/90ZRbM9QDYw5dgGkVML2QMWhjGOl+hn/bjHK9YzOLV iP7Y1sH/w5CiKsb9Z+7/6FawFr5cddb92FbdwRvvgLATP44272sYh8c5bfTCyK9k1/pYtrILq 2/KsbwXnCtwE1v90R6g0iD/izy62rRWYaPGnAEHO5cGCLoHw0pE/hVTjvJ1a9zKobwG2fwl78 7KqhUuYLIiU4ex6qjAyI8Xq8x7lJ18cOcEps+yS+PfyEEaqDgQk7UWajw9mruHVyVD05DgoFa 275Jjclao+I+V/eVhEKDNf0X/+DGLrMr8g+6+gXox6TJn9oPXEPfgaYLlIE7NSlDJuxqyXJCk QYpJmdXIm7XOJG70H3wMCjBD7x4rxeNAvvWh80aXbmpC+J67vM/EhMEBQRUk5jp4S482ROkDX 92qxEmSJ9bTbXYxjJq2o3hlDowRl3YgbCZ0pQfMnWrllMzWBNXC4lWK5amQ7snSKCJXsKEb50 WC4Betx4mEzgE9EQqpYrD+ycYRubulTLCksL33paNSO0oEgdN+HdeKp5o1B0vxHIFcGlTXaIx jY51Ov9Rjsw5DhTEkJi3x6rESbkdohkXu1w1HStVxvb/S0FTN1ev3d1jq9jAzAn7QNg53cpmv y7d+I0TsQO+2T447Fdi7lICps/wt2vYq+VLOD79Ptpgooyyx/pKZk0tQMx4UgzSvC5Td4cdRo LvD5NdpE5ZS7KFi3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ARM kernels with MMU disabled fail to build because of CONFIG_ARCH_MMAP_RND_BITS: kernel/built-in.o:(.data+0x754): undefined reference to `mmap_rnd_bits' kernel/built-in.o:(.data+0x76c): undefined reference to `mmap_rnd_bits_min' kernel/built-in.o:(.data+0x770): undefined reference to `mmap_rnd_bits_max' This changes the newly added line to only select this allow for MMU-enabled kernels. Signed-off-by: Arnd Bergmann Fixes: 14570b3fd31a ("arm: mm: support ARCH_MMAP_RND_BITS") --- Found on yesterday's linux-next with ARM randconfig. The commit that introduced this is currently in Andrew's tree. If you don't already have a fix, please either apply this patch on top, or fold it into the original patch. diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index b64f64d124c4..5a0957e3ea36 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -34,7 +34,7 @@ config ARM select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU - select HAVE_ARCH_MMAP_RND_BITS + select HAVE_ARCH_MMAP_RND_BITS if MMU select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT) select HAVE_ARCH_TRACEHOOK select HAVE_BPF_JIT