From patchwork Mon Jul 11 07:05:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 1654687 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LhFN35yYKz9s07 for ; Mon, 11 Jul 2022 17:08:19 +1000 (AEST) Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4LhFN35FVpz4xDB for ; Mon, 11 Jul 2022 17:08:19 +1000 (AEST) Received: by gandalf.ozlabs.org (Postfix) id 4LhFN35BW7z4xhn; Mon, 11 Jul 2022 17:08:19 +1000 (AEST) Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: gandalf.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=sparclinux-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4LhFN356BSz4xDB for ; Mon, 11 Jul 2022 17:08:19 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229892AbiGKHIR (ORCPT ); Mon, 11 Jul 2022 03:08:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229883AbiGKHHj (ORCPT ); Mon, 11 Jul 2022 03:07:39 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B66041B79A; Mon, 11 Jul 2022 00:07:18 -0700 (PDT) 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 C9FFC1655; Mon, 11 Jul 2022 00:07:18 -0700 (PDT) Received: from a077893.arm.com (unknown [10.163.45.183]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CA1053F70D; Mon, 11 Jul 2022 00:07:10 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: hch@infradead.org, christophe.leroy@csgroup.eu, Anshuman Khandual , 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 V7 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT Date: Mon, 11 Jul 2022 12:35:41 +0530 Message-Id: <20220711070600.2378316-8-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220711070600.2378316-1-anshuman.khandual@arm.com> References: <20220711070600.2378316-1-anshuman.khandual@arm.com> MIME-Version: 1.0 X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Now that protection_map[] has been moved inside those platforms that 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 Reviewed-by: Christophe Leroy Signed-off-by: Anshuman Khandual --- 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 0ff0a1bad091..07b56995e0fe 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 b46d5e931bb3..2cc722e162fa 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -81,7 +81,7 @@ static void unmap_region(struct mm_struct *mm, struct vm_area_struct *vma, struct vm_area_struct *prev, unsigned long start, unsigned long end); -#ifdef __P000 +#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT pgprot_t protection_map[16] __ro_after_init = { [VM_NONE] = __P000, [VM_READ] = __P001, @@ -100,9 +100,6 @@ 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 */