From patchwork Thu May 6 15:26:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 12242449 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4365FC43619 for ; Thu, 6 May 2021 15:27:18 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CF58B613EA for ; Thu, 6 May 2021 15:27:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CF58B613EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=sent.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 704586B0074; Thu, 6 May 2021 11:27:17 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6DAEC6B0075; Thu, 6 May 2021 11:27:17 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 555196B0078; Thu, 6 May 2021 11:27:17 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0122.hostedemail.com [216.40.44.122]) by kanga.kvack.org (Postfix) with ESMTP id 39AEB6B0074 for ; Thu, 6 May 2021 11:27:17 -0400 (EDT) Received: from smtpin34.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id F1AC2181AEF07 for ; Thu, 6 May 2021 15:27:16 +0000 (UTC) X-FDA: 78111184872.34.6F40741 Received: from new4-smtp.messagingengine.com (new4-smtp.messagingengine.com [66.111.4.230]) by imf18.hostedemail.com (Postfix) with ESMTP id 397742000273 for ; Thu, 6 May 2021 15:27:18 +0000 (UTC) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.nyi.internal (Postfix) with ESMTP id 46CE9580B98; Thu, 6 May 2021 11:27:16 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Thu, 06 May 2021 11:27:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=from :to:cc:subject:date:message-id:in-reply-to:references:reply-to :mime-version:content-transfer-encoding; s=fm3; bh=CNhCM5piZYB3R G0DYNDKizi7nXlnPEa9s7srXlj6PXg=; b=ERr+ibPOf0zVPcQflUsZusng7IDBt Ly+me/4A5/4jPSYelctQuWumPKZHomt2odPjYpof3hzY459tKjcCPONvUILkhh/t 6OC9a5HPpB2Yyq0o5us8PKWmCvW0mQg0f8aYcFxatzcRQYA+Eo0sWo/ZiTzuKXmI Hd01N3Fw2jIv2f2YFBMQkjq8B1pc4vuSxr0UIiQSeIIs85G/OdYyaHjWXBC+xCAX K6LBqXwl30RHi/8Vt2uTdqBmdlqpltiukvdWtro7EpYqNBN3iugBknXl6MwpGfFA mQRSO5ILaqStJXxGzBc3QKabgCtMhBgDXKM1Wk3hGtyex3njKiN0j6RfQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:reply-to:subject :to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=CNhCM5piZYB3RG0DYNDKizi7nXlnPEa9s7srXlj6PXg=; b=Gy0HBk0D anbxcrn2TuZswDhEOR9nzUkL2OpRqP+G0E19ruuqkPdfG2QaMkjbgAmYgQDs2PYh X+u9gTjbgqnObnMCUoj+FaA95NZ9nq3dqUJghdetX+vfhI75COOAIVu45MvktsRp uN67O1drDk5ZvdUy0NP/n2xtAuMwihR7u7jxaIwFEFvS+Lf0X7Bu8G20EewqgnkQ wNmhoLBgWiIJ2Q+gcJfXE7xX9ZnkMm45EiNdfx6VxiK0pMrKHq//PZK0Gj78wkXb vHLLIqaG6XGkdvhTQPQ92lb9hweVk9danextwxInKDS/il/3M6ZqnGhSpbXu1q+P JNOnDyTiAoP7aA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdegtddgkeelucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfrhgggfestdhqredtredttdenucfhrhhomhepkghiucgj rghnuceoiihirdihrghnsehsvghnthdrtghomheqnecuggftrfgrthhtvghrnhepieejue dvueduuefhgefhheeiuedvtedvuefgieegveetueeiueehtdegudehfeelnecukfhppeef hedrudeigedrvdegiedrfeegnecuvehluhhsthgvrhfuihiivgepgeenucfrrghrrghmpe hmrghilhhfrhhomhepiihirdihrghnsehsvghnthdrtghomh X-ME-Proxy: Received: from Threadripper.local (ec2-35-164-246-34.us-west-2.compute.amazonaws.com [35.164.246.34]) by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 6 May 2021 11:27:12 -0400 (EDT) From: Zi Yan To: David Hildenbrand , Oscar Salvador Cc: Michael Ellerman , Benjamin Herrenschmidt , Thomas Gleixner , x86@kernel.org, Andy Lutomirski , "Rafael J . Wysocki" , Andrew Morton , Mike Rapoport , Anshuman Khandual , Michal Hocko , Dan Williams , Wei Yang , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, Zi Yan Subject: [RFC PATCH 6/7] arch: x86: no MAX_ORDER exceeds SECTION_SIZE check for 32bit vdso. Date: Thu, 6 May 2021 11:26:22 -0400 Message-Id: <20210506152623.178731-7-zi.yan@sent.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210506152623.178731-1-zi.yan@sent.com> References: <20210506152623.178731-1-zi.yan@sent.com> Reply-To: Zi Yan MIME-Version: 1.0 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 397742000273 X-Stat-Signature: 83sd8uapzfwypmyqxupup5os8sjorb5q Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=sent.com header.s=fm3 header.b=ERr+ibPO; dkim=pass header.d=messagingengine.com header.s=fm2 header.b=Gy0HBk0D; spf=pass (imf18.hostedemail.com: domain of zi.yan@sent.com designates 66.111.4.230 as permitted sender) smtp.mailfrom=zi.yan@sent.com; dmarc=pass (policy=none) header.from=sent.com Received-SPF: none (sent.com>: No applicable sender policy available) receiver=imf18; identity=mailfrom; envelope-from=""; helo=new4-smtp.messagingengine.com; client-ip=66.111.4.230 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620314838-569187 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Zi Yan For x86_64, 32bit vdso is compiled for compatibility reason and 32bit SECTION_SIZE_BITS value is used during compilation. It causes compilation time error when MAX_ORDER is increased in the 64bit environment even if it is OK for 64bit SECTION_SIZE_BITS. Remove the check during 32bit vdso compilation. It will be checked when other kernel components are compiled. Signed-off-by: Zi Yan --- arch/x86/entry/vdso/Makefile | 1 + include/linux/mmzone.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 05c4abc2fdfd..cad339136ed1 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -156,6 +156,7 @@ KBUILD_CFLAGS_32 += -fno-stack-protector KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) KBUILD_CFLAGS_32 += -fno-omit-frame-pointer KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING +KBUILD_CFLAGS_32 += -DNO_MAX_ORDER_CHECK ifdef CONFIG_RETPOLINE ifneq ($(RETPOLINE_VDSO_CFLAGS),) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 965a0cd5eac1..fb5a0c2ab528 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1211,9 +1211,11 @@ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist, #define SECTION_BLOCKFLAGS_BITS \ ((1UL << (PFN_SECTION_SHIFT - pageblock_order)) * NR_PAGEBLOCK_BITS) +#ifndef NO_MAX_ORDER_CHECK #if (MAX_ORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS #error Allocator MAX_ORDER exceeds SECTION_SIZE #endif +#endif static inline unsigned long pfn_to_section_nr(unsigned long pfn) {