From patchwork Mon Jul 11 07:05:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 1654750 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Ypf7Fpxg; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LhFYg055wz9s07 for ; Mon, 11 Jul 2022 17:16:39 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=m60JymlrfvLe8pGyzhUBYGeSL+/lhayKMH7fHLw5nWE=; b=Ypf7FpxgNxjNAy wBeXst7/w6gF6RupsPIWmdjKcSblQinWJuDfdym0xTE2EqQBLi9mb6Qe44hGvWv2kLsFyaWGmI2DG QJtbXmbPv/OGCt804DpfjXCz0dGEz+MRps6qfX3sDVOHof7KudF+9PaplqCmIBS0Hphl2HbwL6UUz ws3J1hL5dIP+VI9KurceEUr+8Ju08x7IWUS/bpQv+HIiC+vfy/fMJwDLi1714TsDJuuAy7C+s4IT+ SeLRySL86TjuCrdMWAjnjFKf679Ei8GWqfeeWHtNty9Y/1A5QNxyBHUB+ecLS3qV+WCeSAoz/fdut 3iRr2/kV+cMDsHUyNaFw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oAnel-00Gi47-LK; Mon, 11 Jul 2022 07:16:35 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oAnWj-00GcFV-Tt; Mon, 11 Jul 2022 07:08:19 +0000 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 49F7616F2; Mon, 11 Jul 2022 00:08:17 -0700 (PDT) Received: from a077893.arm.com (unknown [10.163.45.183]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F1D573F70D; Mon, 11 Jul 2022 00:08:08 -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, Richard Henderson Subject: [PATCH V7 14/26] alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT Date: Mon, 11 Jul 2022 12:35:48 +0530 Message-Id: <20220711070600.2378316-15-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220711_000818_072260_AF856EE4 X-CRM114-Status: UNSURE ( 8.80 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. [...] Content analysis details: (-5.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Cc: Richard Henderson Cc: linux-alpha@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/alpha/Kconfig | 1 + arch/alpha/include/asm/pgtable.h | 17 ----------------- arch/alpha/mm/init.c | 22 ++++++++++++++++++++++ 3 files changed, 23 insertions(+), 17 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 7d0d26b5b3f5..db1c8b329461 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,6 +2,7 @@ config ALPHA bool default y + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h index 170451fde043..3ea9661c09ff 100644 --- a/arch/alpha/include/asm/pgtable.h +++ b/arch/alpha/include/asm/pgtable.h @@ -116,23 +116,6 @@ struct vm_area_struct; * arch/alpha/mm/fault.c) */ /* xwr */ -#define __P000 _PAGE_P(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR) -#define __P001 _PAGE_P(_PAGE_FOE | _PAGE_FOW) -#define __P010 _PAGE_P(_PAGE_FOE) -#define __P011 _PAGE_P(_PAGE_FOE) -#define __P100 _PAGE_P(_PAGE_FOW | _PAGE_FOR) -#define __P101 _PAGE_P(_PAGE_FOW) -#define __P110 _PAGE_P(0) -#define __P111 _PAGE_P(0) - -#define __S000 _PAGE_S(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR) -#define __S001 _PAGE_S(_PAGE_FOE | _PAGE_FOW) -#define __S010 _PAGE_S(_PAGE_FOE) -#define __S011 _PAGE_S(_PAGE_FOE) -#define __S100 _PAGE_S(_PAGE_FOW | _PAGE_FOR) -#define __S101 _PAGE_S(_PAGE_FOW) -#define __S110 _PAGE_S(0) -#define __S111 _PAGE_S(0) /* * pgprot_noncached() is only for infiniband pci support, and a real diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c index 7511723b7669..a155180d7a83 100644 --- a/arch/alpha/mm/init.c +++ b/arch/alpha/mm/init.c @@ -280,3 +280,25 @@ mem_init(void) high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); memblock_free_all(); } + +static const pgprot_t protection_map[16] = { + [VM_NONE] = _PAGE_P(_PAGE_FOE | _PAGE_FOW | + _PAGE_FOR), + [VM_READ] = _PAGE_P(_PAGE_FOE | _PAGE_FOW), + [VM_WRITE] = _PAGE_P(_PAGE_FOE), + [VM_WRITE | VM_READ] = _PAGE_P(_PAGE_FOE), + [VM_EXEC] = _PAGE_P(_PAGE_FOW | _PAGE_FOR), + [VM_EXEC | VM_READ] = _PAGE_P(_PAGE_FOW), + [VM_EXEC | VM_WRITE] = _PAGE_P(0), + [VM_EXEC | VM_WRITE | VM_READ] = _PAGE_P(0), + [VM_SHARED] = _PAGE_S(_PAGE_FOE | _PAGE_FOW | + _PAGE_FOR), + [VM_SHARED | VM_READ] = _PAGE_S(_PAGE_FOE | _PAGE_FOW), + [VM_SHARED | VM_WRITE] = _PAGE_S(_PAGE_FOE), + [VM_SHARED | VM_WRITE | VM_READ] = _PAGE_S(_PAGE_FOE), + [VM_SHARED | VM_EXEC] = _PAGE_S(_PAGE_FOW | _PAGE_FOR), + [VM_SHARED | VM_EXEC | VM_READ] = _PAGE_S(_PAGE_FOW), + [VM_SHARED | VM_EXEC | VM_WRITE] = _PAGE_S(0), + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = _PAGE_S(0) +}; +DECLARE_VM_GET_PAGE_PROT