From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757139Ab2HVOaM (ORCPT ); Wed, 22 Aug 2012 10:30:12 -0400 Received: from moutng.kundenserver.de ([212.227.126.186]:59848 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753085Ab2HVOaI (ORCPT ); Wed, 22 Aug 2012 10:30:08 -0400 From: Arnd Bergmann To: Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Will Deacon Subject: [PATCH 2/4] ARM: allow PID_IN_CONTEXTIDR only for ARMv7 Date: Wed, 22 Aug 2012 16:29:38 +0200 Message-Id: <1345645780-2749-3-git-send-email-arnd@arndb.de> X-Mailer: git-send-email 1.7.10 In-Reply-To: <1345645780-2749-1-git-send-email-arnd@arndb.de> References: <1345645780-2749-1-git-send-email-arnd@arndb.de> X-Provags-ID: V02:K0:39epySVFofFwEtk6U40Voqvt3hnhyvYchW/XWNhCCAJ Zl/1jPEETAxb1Sad7ZWmnX6Tpx5ugtDXGKz0hQDsebMblTmyDd kelB2ElpcCtZga+ezHp7xmDVPwtu1kI/q+5OmEA9TcXNI9c2Ae qiKpABXyOh/YZFp9c9OQowD8QxSNgbP3urzLl7924cFCvPqvES NLwKreao/RlyhXdGwfVQBVuLFXcO0xqLeH75Pe/Zcb5Vv5MtDF vKkCcQMaUhray8T56aVKqbEKlrKu8/1B6euHP+FvKVuEKu7Bq1 PnlbM3BznKVhfwrmPL0z556mbbTp7bIXQP0G9fXeFqtsVTGD/L 5hp1hgBXt4K97NURsNW+/cV5AZFmRJcjat/1P6nXqk18G08PK6 hlaULMVZDv9iw== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When ARMv6 is enabled, we build the kernel with -march=armv6 or -march=armv6k, which means the bfi instruction is not available. Instead, it only works with -march=armv6t2 or -march=armv7-a. Without this patch, building rand-enIHAOL results in: /tmp/ccwCsCXC.s: Assembler messages: /tmp/ccwCsCXC.s:49: Error: selected processor does not support ARM mode `bfi r3,r2,#0,#8' Signed-off-by: Arnd Bergmann Cc: Will Deacon Cc: Russell King --- arch/arm/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index f15f82b..11b9ff4 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -398,6 +398,7 @@ config ARM_KPROBES_TEST config PID_IN_CONTEXTIDR bool "Write the current PID to the CONTEXTIDR register" depends on CPU_COPY_V6 + depends on CPU_V7 && !CPU_V6 help Enabling this option causes the kernel to write the current PID to the PROCID field of the CONTEXTIDR register, at the expense of some -- 1.7.10