From patchwork Tue Jul 24 01:09:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cyril Chemparathy X-Patchwork-Id: 1229791 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 298863FCFC for ; Tue, 24 Jul 2012 01:15:04 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1StTed-0002ir-GL; Tue, 24 Jul 2012 01:11:15 +0000 Received: from arroyo.ext.ti.com ([192.94.94.40]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1StTdC-0002ZG-Hx for linux-arm-kernel@lists.infradead.org; Tue, 24 Jul 2012 01:10:09 +0000 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id q6O19cfh011156; Mon, 23 Jul 2012 20:09:38 -0500 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id q6O19c5Q010216; Mon, 23 Jul 2012 20:09:38 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by dfle72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.1.323.3; Mon, 23 Jul 2012 20:09:38 -0500 Received: from ares-ubuntu.am.dhcp.ti.com (ares-ubuntu.am.dhcp.ti.com [158.218.103.17]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id q6O19bF1024533; Mon, 23 Jul 2012 20:09:37 -0500 Received: from a0875269 by ares-ubuntu.am.dhcp.ti.com with local (Exim 4.76) (envelope-from ) id 1StTd3-0002Tt-Nt; Mon, 23 Jul 2012 21:09:37 -0400 From: Cyril Chemparathy To: Subject: [RFC 01/23] ARM: LPAE: disable phys-to-virt patching on PAE systems Date: Mon, 23 Jul 2012 21:09:03 -0400 Message-ID: <1343092165-9470-2-git-send-email-cyril@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1343092165-9470-1-git-send-email-cyril@ti.com> References: <1343092165-9470-1-git-send-email-cyril@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-6.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.40 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: nico@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, Vitaly Andrianov , Cyril Chemparathy X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Vitaly Andrianov The current phys-to-virt patching mechanism is broken on PAE machines with 64-bit physical addressing. This patch disables the patching mechanism in such configurations. Signed-off-by: Vitaly Andrianov Signed-off-by: Cyril Chemparathy --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a91009c..55da671 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -191,6 +191,7 @@ config ARM_PATCH_PHYS_VIRT default y depends on !XIP_KERNEL && MMU depends on !ARCH_REALVIEW || !SPARSEMEM + depends on !ARCH_PHYS_ADDR_T_64BIT help Patch phys-to-virt and virt-to-phys translation functions at boot and module load time according to the position of the