From patchwork Fri Jun 24 04:43:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 12893726 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 DB8AEC433EF for ; Fri, 24 Jun 2022 04:44:54 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7E78D8E01CF; Fri, 24 Jun 2022 00:44:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 797858E01BF; Fri, 24 Jun 2022 00:44:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 687A58E01CF; Fri, 24 Jun 2022 00:44:54 -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 5AE528E01BF for ; Fri, 24 Jun 2022 00:44:54 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay12.hostedemail.com (Postfix) with ESMTP id 369151209D8 for ; Fri, 24 Jun 2022 04:44:54 +0000 (UTC) X-FDA: 79611889308.06.E8718B8 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf07.hostedemail.com (Postfix) with ESMTP id BADD34002E for ; Fri, 24 Jun 2022 04:44:53 +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 55A99165C; Thu, 23 Jun 2022 21:44:53 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.41.7]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B27FC3F66F; Thu, 23 Jun 2022 21:44:45 -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 Subject: [PATCH V4 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT Date: Fri, 24 Jun 2022 10:13:20 +0530 Message-Id: <20220624044339.1533882-8-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220624044339.1533882-1-anshuman.khandual@arm.com> References: <20220624044339.1533882-1-anshuman.khandual@arm.com> MIME-Version: 1.0 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1656045893; a=rsa-sha256; cv=none; b=iwjLPUnt6+TWqqpwTfTxmvqSivRJPU8DPsf3Kp4kJBn6/wKjz1VsfhgMUY0/Gdv671IhJj cnqA6AkNZmGWnhRmtXZdfwPtiWS+S4BlhohFR1YNhSpL/RELFasEgqN0tEM/iOMxrK9O/9 BXuZ/7E+l2Mo3GRX3WRznp/mAMLMk7w= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf07.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1656045893; 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=P/lpBH/3fmjH8UcjOSMU7zW0hg8qINmA5EzRX3l4xgM=; b=If2jCW2jQLPIYuUf77Ua07cZT6WHz6BSIGrg00QRe65dxH3NVG+7QN9PVY6I+SffZCPVUR aM96GsZcoLzWG0bmyutBv8YBRvzNHGNfXp26U0FaYh0UWQ58Qezfm776MMmAH1RP7ZBjRH UmWVRsg2yN2KFGGiKc0qe8UNOgjIGA0= X-Stat-Signature: uwd1b71amskdu3u8gyi8gk39mcnf48du X-Rspamd-Queue-Id: BADD34002E Authentication-Results: imf07.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf07.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com X-Rspamd-Server: rspam10 X-Rspam-User: X-HE-Tag: 1656045893-413195 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: protection_map[] has already been moved inside those platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000. Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual Reviewed-by: Christophe Leroy --- include/linux/mm.h | 2 +- mm/mmap.c | 5 +---- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 237828c2bae2..70d900f6df43 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -424,7 +424,7 @@ extern unsigned int kobjsize(const void *objp); * mapping from the currently active vm_flags protection bits (the * low four bits) to a page protection mask.. */ -#ifdef __P000 +#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT extern pgprot_t protection_map[16]; #endif diff --git a/mm/mmap.c b/mm/mmap.c index 55c30aee3999..43db3bd49071 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -101,7 +101,7 @@ static void unmap_region(struct mm_struct *mm, * w: (no) no * x: (yes) yes */ -#ifdef __P000 +#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT pgprot_t protection_map[16] __ro_after_init = { [VM_NONE] = __P000, [VM_READ] = __P001, @@ -120,9 +120,6 @@ pgprot_t protection_map[16] __ro_after_init = { [VM_SHARED | VM_EXEC | VM_WRITE] = __S110, [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111 }; -#endif - -#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT DECLARE_VM_GET_PAGE_PROT #endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */