Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2993179AbbHHWKl (ORCPT ); Sat, 8 Aug 2015 18:10:41 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:36190 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2993143AbbHHWKd (ORCPT ); Sat, 8 Aug 2015 18:10:33 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Burton , Markos Chandras , linux-mips@linux-mips.org, Matthew Fortune , Ralf Baechle Subject: [PATCH 4.1 014/123] MIPS: Require O32 FP64 support for MIPS64 with O32 compat Date: Sat, 8 Aug 2015 15:08:12 -0700 Message-Id: <20150808220718.346788976@linuxfoundation.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <20150808220717.771230091@linuxfoundation.org> References: <20150808220717.771230091@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1775 Lines: 48 4.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Burton commit 4e9d324d4288b082497c30bc55b8ad13acc7cf01 upstream. MIPS32r6 code requires FP64 (ie. FR=1) support. Building a kernel with support for MIPS32r6 binaries but without support for O32 with FP64 is therefore a problem which can lead to incorrectly executed userland. CONFIG_MIPS_O32_FP64_SUPPORT is already selected when the kernel is configured for MIPS32r6, but not when the kernel is configured for MIPS64r6 with O32 compat support. Select CONFIG_MIPS_O32_FP64_SUPPORT in such configurations to prevent building kernels which execute MIPS32r6 userland incorrectly. Signed-off-by: Paul Burton Cc: Markos Chandras Cc: linux-mips@linux-mips.org Cc: Matthew Fortune Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10674/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1417,6 +1417,7 @@ config CPU_MIPS64_R6 select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA select GENERIC_CSUM + select MIPS_O32_FP64_SUPPORT if MIPS32_O32 help Choose this option to build a kernel for release 6 or later of the MIPS64 architecture. New MIPS processors, starting with the Warrior -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/