From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B4731CCA47B for ; Thu, 30 Jun 2022 05:17:30 +0000 (UTC) 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=i/v8gVKFiSPiQ/noCyPginxD+dSaz0ZtadSAKXXvqhw=; b=jHdesCbeTDlBjQ nbcL9vxskwy6M4PoQCJewkObM4wL4JL8UvXvMnNawlINjpiPMtqNJL/OKcKH/HhSv7fgfGo9aPJB6 6GhKLokmbTdhZhrgk8VPocnGdR9iAbbonh0iOtYiV42vO93QPAHGrVkdAlvwgh2xPdyjGGdrv8prI lxR6m9XdrQRjJ11ewqpzt3CsKeX2xJGwswCgXn7POZfazS6QSkcoFCsg12/xFkiNmceN7GZoOaVbd PG01ztIr4sbRVRWD/sfDwC1SWfhYRUcoBsLxWASgJ5qBdn38RdVlP0Iv1HW757BUykajj1Q6mZx/a U0mDhHt0rm/OiRmISWkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o6mYH-00F6zh-GJ; Thu, 30 Jun 2022 05:17:17 +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 1o6mXx-00F6sK-OF; Thu, 30 Jun 2022 05:16:59 +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 E5BC11480; Wed, 29 Jun 2022 22:16:54 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.41.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C35FE3F66F; Wed, 29 Jun 2022 22:16:46 -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, Christoph Hellwig Subject: [PATCH V6 01/26] mm/mmap: Build protect protection_map[] with __P000 Date: Thu, 30 Jun 2022 10:46:05 +0530 Message-Id: <20220630051630.1718927-2-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220630051630.1718927-1-anshuman.khandual@arm.com> References: <20220630051630.1718927-1-anshuman.khandual@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220629_221657_859207_21326410 X-CRM114-Status: UNSURE ( 9.79 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Build protect generic protection_map[] array with __P000, so that it can be moved inside all the platforms one after the other. Otherwise there will be build failures during this process. CONFIG_ARCH_HAS_VM_GET_PAGE_PROT cannot be used for this purpose as only certain platforms enable this config now. Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Christoph Hellwig Reviewed-by: Christophe Leroy Suggested-by: Christophe Leroy Signed-off-by: Anshuman Khandual --- include/linux/mm.h | 2 ++ mm/mmap.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index cf3d0d673f6b..0ff0a1bad091 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -424,7 +424,9 @@ 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 extern pgprot_t protection_map[16]; +#endif /* * The default fault flags that should be used by most of the diff --git a/mm/mmap.c b/mm/mmap.c index 61e6135c54ef..b01f0280bda2 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -101,6 +101,7 @@ static void unmap_region(struct mm_struct *mm, * w: (no) no * x: (yes) yes */ +#ifdef __P000 pgprot_t protection_map[16] __ro_after_init = { [VM_NONE] = __P000, [VM_READ] = __P001, @@ -119,6 +120,7 @@ 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 pgprot_t vm_get_page_prot(unsigned long vm_flags) -- 2.25.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv