Received: by 2002:ac0:946b:0:0:0:0:0 with SMTP id j40csp928397imj; Fri, 15 Feb 2019 09:06:53 -0800 (PST) X-Google-Smtp-Source: AHgI3IZndgt4D8Lv98b+xxYrTWrIVHSOKxaIXW2pOvlON2dfMUhiYQ70tXoFWt3E7MhJy1pE7yLf X-Received: by 2002:a63:ce:: with SMTP id 197mr6249952pga.212.1550250412881; Fri, 15 Feb 2019 09:06:52 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1550250412; cv=none; d=google.com; s=arc-20160816; b=YASinAlseehTImzVe5KF9ix2aBqNTC3jiTetjB4YoC2l21CYaRSOQXBGugERfZ51Fr x36OMhbqtTBJCKda5vzlzCaqwxurgEIZZrxOdCOEgNIhEtPD6zZi7v6Yx2GTsawvkrpO eUl5wHMKrOli1jGXAKAaBU7M3YUZlI5tahtgRJln9waEUKFqOLnNEvsWJ4t0nnVXDEAU 86ZOM4vTz3EJmoH4N3wpGGuDv5kqvUdDvE3yko+eq8YIwiUsemaiLztk4qCd7Iz1si6Y oIwsRoB5sd7DMXiTE90KSO47DqkPvJOpzZk7mG3b8mH3P6415XYZAcnsJ5o2XVuIr3PR KSIA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=cgmVGKBRQKtEZdJyjA1gIFBtbXN/G8O1rrSlP5LxrbQ=; b=uuR//0h9X04vonFnvpMHW/MlEFwhqPWh6WDfxfPr0JzzPdFUp5wOp4b73e7INztLot wFNfe26fga6T3oLgMofzdMn7DoyTGBXRmUIjK8qINHQ5OV2ilEZNqDyt78ztvEsuCLg8 djbxPlVSB05dTALhC4LdN6qBxggMSEQKqC4NGBXheAtQoaDQ3Tpsy0ftQshNARcUDBcf qjPS8ZOpfepQjf0qPTXpaMV8hURuFJ3p7zBYwcoWq/R9bxTXgt1ApBbBcy8t5f7gvDJo RgbrdDrKBIiwUpdwl7iG5nSsnh/9/8Qal91XSI818rTvnQp+YibM5/ojw3ti74vvhsOm RxzA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d6si3802660pgq.319.2019.02.15.09.06.34; Fri, 15 Feb 2019 09:06:52 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730356AbfBORDR (ORCPT + 99 others); Fri, 15 Feb 2019 12:03:17 -0500 Received: from foss.arm.com ([217.140.101.70]:35684 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726028AbfBORDP (ORCPT ); Fri, 15 Feb 2019 12:03:15 -0500 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 71631EBD; Fri, 15 Feb 2019 09:03:15 -0800 (PST) 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 7D4693F557; Fri, 15 Feb 2019 09:03:12 -0800 (PST) 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 Subject: [PATCH 03/13] mm: Add generic p?d_large() macros Date: Fri, 15 Feb 2019 17:02:24 +0000 Message-Id: <20190215170235.23360-4-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190215170235.23360-1-steven.price@arm.com> References: <20190215170235.23360-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: James Morse 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, provided a does nothing default. Signed-off-by: James Morse Signed-off-by: Steven Price --- include/asm-generic/pgtable.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 05e61e6c843f..7630d663cd51 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -1186,4 +1186,14 @@ static inline bool arch_has_pfn_modify_check(void) #define mm_pmd_folded(mm) __is_defined(__PAGETABLE_PMD_FOLDED) #endif +#ifndef pgd_large +#define pgd_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