From patchwork Mon Jun 27 04:58:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 12896101 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9F50C43334 for ; Mon, 27 Jun 2022 04:59:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 483C98E0007; Mon, 27 Jun 2022 00:59:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 434628E0001; Mon, 27 Jun 2022 00:59:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2FB7E8E0007; Mon, 27 Jun 2022 00:59:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 215B88E0001 for ; Mon, 27 Jun 2022 00:59:33 -0400 (EDT) Received: from smtpin19.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id F1B38608CC for ; Mon, 27 Jun 2022 04:59:32 +0000 (UTC) X-FDA: 79622812584.19.8AE2CFC Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf14.hostedemail.com (Postfix) with ESMTP id 8A9D710001D for ; Mon, 27 Jun 2022 04:59:32 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 055D11474; Sun, 26 Jun 2022 21:59:32 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.42.6]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 669DA3F5A1; Sun, 26 Jun 2022 21:59:24 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org Cc: hch@infradead.org, christophe.leroy@csgroup.eu, Anshuman Khandual , Andrew Morton , linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, x86@kernel.org, openrisc@lists.librecores.org, linux-xtensa@linux-xtensa.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-um@lists.infradead.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon Subject: [PATCH V5 05/26] arm64/mm: Move protection_map[] inside the platform Date: Mon, 27 Jun 2022 10:28:12 +0530 Message-Id: <20220627045833.1590055-6-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220627045833.1590055-1-anshuman.khandual@arm.com> References: <20220627045833.1590055-1-anshuman.khandual@arm.com> MIME-Version: 1.0 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1656305972; a=rsa-sha256; cv=none; b=8laHlH5C9cz47Ygu2tDVKCavHTPK6mmC2vfOAxgVmM48rLagiIiGzEW0ssIsfA3KYkYFlG PMqMphJnF7quZ5Bdk1lzXqEhMR42r979nF66jY+yWjJHdZiCcjIjnOfpZtExb1DohinIHm 4h41hyaTlIMsaP5+pQWRtDz935pDzrI= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=none; spf=pass (imf14.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1656305972; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9E3MIj+WP/9z4nzIi7IGLCCWD4D9+EAInU3AyYSQaaU=; b=Ei+CMSmSB6Nr66GqTJ4iyAfbvsASYg6K8ZUjDRNNmW3ebRy3HO4dQKQRmU+ATjfLncoih+ dyaJ4lMJM3lfhAKlyriHZ/Ep120uQLJqAd1uLm2eFDV5sDaEdHpxIuBzzy1Yu+5dlFX1CQ BxhXR2joZqua3ZE/hiRldXJCjb/rOp8= X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 8A9D710001D Authentication-Results: imf14.hostedemail.com; dkim=none; spf=pass (imf14.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com; dmarc=pass (policy=none) header.from=arm.com X-Rspam-User: X-Stat-Signature: dfbypafecx7gj6d15itjyqhpizdda8s3 X-HE-Tag: 1656305972-263625 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: This moves protection_map[] inside the platform and makes it a static. Cc: Catalin Marinas Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Catalin Marinas Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/pgtable-prot.h | 18 ------------------ arch/arm64/mm/mmap.c | 21 +++++++++++++++++++++ 2 files changed, 21 insertions(+), 18 deletions(-) diff --git a/arch/arm64/include/asm/pgtable-prot.h b/arch/arm64/include/asm/pgtable-prot.h index 62e0ebeed720..9b165117a454 100644 --- a/arch/arm64/include/asm/pgtable-prot.h +++ b/arch/arm64/include/asm/pgtable-prot.h @@ -89,24 +89,6 @@ extern bool arm64_use_ng_mappings; #define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY | PTE_NG | PTE_PXN) #define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG | PTE_PXN) -#define __P000 PAGE_NONE -#define __P001 PAGE_READONLY -#define __P010 PAGE_READONLY -#define __P011 PAGE_READONLY -#define __P100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */ -#define __P101 PAGE_READONLY_EXEC -#define __P110 PAGE_READONLY_EXEC -#define __P111 PAGE_READONLY_EXEC - -#define __S000 PAGE_NONE -#define __S001 PAGE_READONLY -#define __S010 PAGE_SHARED -#define __S011 PAGE_SHARED -#define __S100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */ -#define __S101 PAGE_READONLY_EXEC -#define __S110 PAGE_SHARED_EXEC -#define __S111 PAGE_SHARED_EXEC - #endif /* __ASSEMBLY__ */ #endif /* __ASM_PGTABLE_PROT_H */ diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c index 78e9490f748d..8f5b7ce857ed 100644 --- a/arch/arm64/mm/mmap.c +++ b/arch/arm64/mm/mmap.c @@ -13,6 +13,27 @@ #include #include +static pgprot_t protection_map[16] __ro_after_init = { + [VM_NONE] = PAGE_NONE, + [VM_READ] = PAGE_READONLY, + [VM_WRITE] = PAGE_READONLY, + [VM_WRITE | VM_READ] = PAGE_READONLY, + /* PAGE_EXECONLY if Enhanced PAN */ + [VM_EXEC] = PAGE_READONLY_EXEC, + [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC, + [VM_EXEC | VM_WRITE] = PAGE_READONLY_EXEC, + [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READONLY_EXEC, + [VM_SHARED] = PAGE_NONE, + [VM_SHARED | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_WRITE] = PAGE_SHARED, + [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED, + /* PAGE_EXECONLY if Enhanced PAN */ + [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC, + [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC, + [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED_EXEC, + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC +}; + /* * You really shouldn't be using read() or write() on /dev/mem. This might go * away in the future.