From patchwork Tue Apr 29 04:59:23 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ??? X-Patchwork-Id: 4084691 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C24599F38E for ; Tue, 29 Apr 2014 05:01:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 49C73201F4 for ; Tue, 29 Apr 2014 05:01:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5591201DE for ; Tue, 29 Apr 2014 05:01:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932453AbaD2FAy (ORCPT ); Tue, 29 Apr 2014 01:00:54 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:64263 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932108AbaD2E7Z (ORCPT ); Tue, 29 Apr 2014 00:59:25 -0400 Received: from epcpsbgr2.samsung.com (u142.gpu120.samsung.co.kr [203.254.230.142]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N4S005J10J06500@mailout2.samsung.com>; Tue, 29 Apr 2014 13:59:24 +0900 (KST) Received: from epcpsbgm1.samsung.com ( [203.254.230.50]) by epcpsbgr2.samsung.com (EPCPMTA) with SMTP id 0D.94.14563.CA13F535; Tue, 29 Apr 2014 13:59:24 +0900 (KST) X-AuditID: cbfee68e-b7fd86d0000038e3-f6-535f31ac06e2 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 87.94.27725.CA13F535; Tue, 29 Apr 2014 13:59:24 +0900 (KST) Received: from DOJAYSLEE01 ([12.36.166.151]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0N4S00IS90IZ7TA0@mmp1.samsung.com>; Tue, 29 Apr 2014 13:59:24 +0900 (KST) From: Jungseok Lee To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, Catalin.Marinas@arm.com, Marc Zyngier , Christoffer Dall Cc: linux-kernel@vger.kernel.org, linux-samsung-soc , steve.capper@linaro.org, sungjinn.chung@samsung.com, Arnd Bergmann , kgene.kim@samsung.com, ilho215.lee@samsung.com Subject: [PATCH v4 3/7] arm64: Introduce a kernel configuration option for VA_BITS Date: Tue, 29 Apr 2014 13:59:23 +0900 Message-id: <000301cf6367$ca12e150$5e38a3f0$@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-index: Ac9jZVrJFchiuwljR/2ghksfz/LPsQ== Content-language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNIsWRmVeSWpSXmKPExsVy+t8zI901hvHBBm/ni1r8nXSM3eL9sh5G ixev/zFaHP23kNGid8FVNouPp46zW2x6fI3V4vKuOWwWM87vY7L4e+cfm8WKecvYLD7MWMno wOOxZt4aRo/fvyYxety5tofN4/ymNcwem5fUe/RtWcXo8XmTXAB7FJdNSmpOZllqkb5dAlfG wx3BBe94K7obVjA3MK7g7mLk5JAQMJE4tuMeK4QtJnHh3nq2LkYuDiGBZYwSyyadYexi5AAr mtBTCRFfxChxevIVqKI/jBLf9vczgXSzCWhKPLrbww6SEBHYwSgxee0iVhCHWeAho8TPt/uZ QaqEBUIkZnduZgIZyyKgKrH5mQtImFfAUuLeyndsELagxI/J91hAbGYBLYn1O48zQdjyEpvX vGWGOFVBYsfZ14wgtoiAnsTd3jnMEDUiEvtevGOEqOnlkDjxmhPEZhEQkPg2+RALxDeyEpsO QI2RlDi44gbLBEaxWUg2z0KyeRaSzbOQbFjAyLKKUTS1ILmgOCm9yEivODG3uDQvXS85P3cT IySi+3Yw3jxgfYgxGWj9RGYp0eR8YELIK4k3NDYzsjA1MTU2Mrc0I01YSZx30cOkICGB9MSS 1OzU1ILUovii0pzU4kOMTBycUg2MRQHtLxMft8neiEjW82h7dHr+r1jDV35HdSVu3X2iMnfr 46xLxy60cDzbd3aVyizjmAszZmaefbCFa03NC6fPR0Szz2w0ZardUK/1x0fUWNUl9l26f838 yM06YQyyfhcEu6ZLlN15/t/v8E7VQu9ikUKpTY9vmMVckrRzOr17guA57ok/ful4KrEUZyQa ajEXFScCALDUdhP+AgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrJKsWRmVeSWpSXmKPExsVy+t9jAd01hvHBBpeuC1j8nXSM3eL9sh5G ixev/zFaHP23kNGid8FVNouPp46zW2x6fI3V4vKuOWwWM87vY7L4e+cfm8WKecvYLD7MWMno wOOxZt4aRo/fvyYxety5tofN4/ymNcwem5fUe/RtWcXo8XmTXAB7VAOjTUZqYkpqkUJqXnJ+ SmZeuq2Sd3C8c7ypmYGhrqGlhbmSQl5ibqqtkotPgK5bZg7QpUoKZYk5pUChgMTiYiV9O0wT QkPcdC1gGiN0fUOC4HqMDNBAwjrGjIc7ggve8VZ0N6xgbmBcwd3FyMEhIWAiMaGnsouRE8gU k7hwbz1bFyMXh5DAIkaJ05OvQDl/GCW+7e9nAqliE9CUeHS3hx0kISKwg1Fi8tpFrCAOs8BD Romfb/czg1QJC4RIzO7czASygkVAVWLzMxeQMK+ApcS9le/YIGxBiR+T77GA2MwCWhLrdx5n grDlJTavecsMcZKCxI6zrxlBbBEBPYm7vXOYIWpEJPa9eMc4gVFgFpJRs5CMmoVk1CwkLQsY WVYxiqYWJBcUJ6XnGuoVJ+YWl+al6yXn525iBCeMZ1I7GFc2WBxiFOBgVOLhNYiKCxZiTSwr rsw9xCjBwawkwsuhGR8sxJuSWFmVWpQfX1Sak1p8iDEZ6NGJzFKiyfnAZJZXEm9obGJmZGlk ZmFkYm5OmrCSOO+BVutAIYH0xJLU7NTUgtQimC1MHJxSDYyihcZ/NeYy/c2yzzB/UGHarRK7 0l3ptslNDkOlL50vKnsX9oruWvXs6IvYuGYJ3wUN3bzX90SVHZxu5vp3Zt9eQ61GyelBU0V2 cn799utrzOU10VIb56nFGLRUvL0TKvtgh+ut+uvb7kX71HfH7Nstdmmi47Zs+dcX1zva57wR CWhgj3jMfk6JpTgj0VCLuag4EQD/KdCeXAMAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a kernel configuration for VA_BITS. It helps to prevent unnecessary #ifdef statements insertions for VA_BITS when implementing different page sizes and level of translation tables. Cc: Catalin Marinas Cc: Steve Capper Signed-off-by: Jungseok Lee Reviewed-by: Sungjinn Chung --- arch/arm64/Kconfig | 8 ++++++++ arch/arm64/include/asm/memory.h | 6 +----- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c7f5d65..7b8d429 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -186,6 +186,14 @@ config ARM64_3_LEVELS endchoice +config ARM64_VA_BITS + int "Virtual address space size" + range 39 39 if ARM64_4K_PAGES && ARM64_3_LEVELS + range 42 42 if ARM64_64K_PAGES && ARM64_2_LEVELS + help + This feature is determined by a combination of page size and + level of translation tables. + config CPU_BIG_ENDIAN bool "Build big-endian kernel" help diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index e94f945..f6e7480 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -41,11 +41,7 @@ * The module space lives between the addresses given by TASK_SIZE * and PAGE_OFFSET - it must be within 128MB of the kernel text. */ -#ifdef CONFIG_ARM64_64K_PAGES -#define VA_BITS (42) -#else -#define VA_BITS (39) -#endif +#define VA_BITS (CONFIG_ARM64_VA_BITS) #define PAGE_OFFSET (UL(0xffffffffffffffff) << (VA_BITS - 1)) #define MODULES_END (PAGE_OFFSET) #define MODULES_VADDR (MODULES_END - SZ_64M)