From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 A2228C43381 for ; Thu, 28 Mar 2019 15:22:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 601B2206BA for ; Thu, 28 Mar 2019 15:22:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 601B2206BA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 590FE6B0269; Thu, 28 Mar 2019 11:22:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4F2A96B026A; Thu, 28 Mar 2019 11:22:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 36C936B026B; Thu, 28 Mar 2019 11:22:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by kanga.kvack.org (Postfix) with ESMTP id DE9BA6B0269 for ; Thu, 28 Mar 2019 11:22:34 -0400 (EDT) Received: by mail-ed1-f70.google.com with SMTP id c40so6983761eda.10 for ; Thu, 28 Mar 2019 08:22:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=U1aR140X7RnjOrD7ClczvI1VvyAi5tuJM37h24SqYlk=; b=clF95RQ8Va+wSoUxhi9vG900QtIZmhAzVt6GMSh4n6vhV1T7TtYz3K8rS8tndI/DIA VZz35Skqd90i+BRy4SZ1v2DWg+tGsNOoTnLHZ0qlJyddW9zcnKN9g82gCD2M5G9i/U2B +zZbuoEB1sKbbM7ZWkYeU51/WS4tMf+5jTmgjUZZ/UtHj/1wigegyUybCyZSRVa1wBJr a+a1E3z1FtYHv20enySM4a9pr7OIpUQNPAeH2ALdbifTnAbGmpnrkzpRV/tFtdaEsE5w nZwYtfX4OQ9JwPbvubpvqDiCN39OuCVzf6aLThCAZn6wQpsXViF5B9twr5etG9P7h6I9 haxQ== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=steven.price@arm.com X-Gm-Message-State: APjAAAVWPLx6oSpF/Ek01Kf764OqQI0pzAau/FoQogP2lviaRYTp8Jw/ ItVUUsC0TchOq7amyn5YKob3QFJNDm3k+RPJa+m+c6vgJbQA0bkFxrj+Ar2jvhAAAMJyudmyMSJ eWXvuL1xTDzYn1DddExyrxWjKnnYYSC7lppwY3GoR35G4uTO1rlRU2P5xUeMZX3XxFA== X-Received: by 2002:a50:ba52:: with SMTP id 18mr28686206eds.243.1553786554451; Thu, 28 Mar 2019 08:22:34 -0700 (PDT) X-Google-Smtp-Source: APXvYqy673eScNceBou3zW9EhrAiJZYpVT9EuQ3GMp3F4vpb5K1x5ILi0H/sZct+qDldJ4AA0MT7 X-Received: by 2002:a50:ba52:: with SMTP id 18mr28686150eds.243.1553786553432; Thu, 28 Mar 2019 08:22:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553786553; cv=none; d=google.com; s=arc-20160816; b=hQ0fQlV3sZHlcLomjJoP5V93sVqAYB99FWIV77i/aEPDZhJ7nROa+LsluYg2xWJaJW Q7NWmjX/5MlowM+wAAJIi7NpCUGX1c7SF8WAqSgmL+Sun2fFV1vkjUWQkpYtpjBKX0V8 fkPsUB6t5vX6mxXfhPqm7UPUKvkB6jmeJ5fcEYypcrtoIByu9o2Tw0/I9LHJ8C1Q92TX kUbioPrMH79+mSiGv5wSrD3V6kunMz0wvd2C+lEQhDNwQ86jfNvAZWRYjB0v1VdtU1/8 wCkbXFLEkAUwY0gEJk7Jf6A3AwCK1fN4wmlFX4cL+PfOtsBdAJ635XBoIIpyhcMhSmqU JT6g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=U1aR140X7RnjOrD7ClczvI1VvyAi5tuJM37h24SqYlk=; b=JcbZ+BV1gSkNedf0nk7ZoK3lZnGGSOwXLHdgjOx2wfpg0MFAGPiwLAKcfXTa21Srdl pIJyJuf9XQHVuFvcYX4eXOsT2ZG1ILOFZFqx2SWgo1zhX3bN2KBJ2cNJMSJOlbsFRA5o lJ3xZ8TYAhTlngkpEPTExmQD4mXUzZRZLFZFwZLHi9/S11y5C/PU+4M+/l+fZTXVCZRC FRu3yeo0Jq4+sumJs58O/W36dMFgMdV6DXv1dysL52K5ybwx2FAFdLZhkPALYzwheFwB ORstXLVgi2gZCV6gNTwGzOV3ml0hF0HNmO6K4DfextY33B7btUOGXXggqew7/9BFrKIK OaFQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=steven.price@arm.com Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id l1si1410158edn.23.2019.03.28.08.22.33 for ; Thu, 28 Mar 2019 08:22:33 -0700 (PDT) Received-SPF: pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) client-ip=217.140.101.70; Authentication-Results: mx.google.com; spf=pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=steven.price@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 958871684; Thu, 28 Mar 2019 08:22:32 -0700 (PDT) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.69]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4EB6A3F557; Thu, 28 Mar 2019 08:22:29 -0700 (PDT) From: Steven Price To: linux-mm@kvack.org Cc: Steven Price , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Dave Hansen , Ingo Molnar , James Morse , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Peter Zijlstra , Thomas Gleixner , Will Deacon , x86@kernel.org, "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Rutland , "Liang, Kan" Subject: [PATCH v7 10/20] mm: Add generic p?d_large() macros Date: Thu, 28 Mar 2019 15:20:54 +0000 Message-Id: <20190328152104.23106-11-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190328152104.23106-1-steven.price@arm.com> References: <20190328152104.23106-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Exposing the pud/pgd levels of the page tables to walk_page_range() means we may come across the exotic large mappings that come with large areas of contiguous memory (such as the kernel's linear map). For architectures that don't provide p?d_large() macros, provide generic does nothing defaults. Signed-off-by: Steven Price --- include/asm-generic/pgtable.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index fa782fba51ee..9c5d0f73db67 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -1186,4 +1186,23 @@ static inline bool arch_has_pfn_modify_check(void) #define mm_pmd_folded(mm) __is_defined(__PAGETABLE_PMD_FOLDED) #endif +/* + * p?d_large() - true if this entry is a final mapping to a physical address. + * This differs from p?d_huge() by the fact that they are always available (if + * the architecture supports large pages at the appropriate level) even + * if CONFIG_HUGETLB_PAGE is not defined. + */ +#ifndef pgd_large +#define pgd_large(x) 0 +#endif +#ifndef p4d_large +#define p4d_large(x) 0 +#endif +#ifndef pud_large +#define pud_large(x) 0 +#endif +#ifndef pmd_large +#define pmd_large(x) 0 +#endif + #endif /* _ASM_GENERIC_PGTABLE_H */ -- 2.20.1