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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47053C2D0EA for ; Wed, 8 Apr 2020 15:37:28 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4830220730 for ; Wed, 8 Apr 2020 15:37:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4830220730 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48y7gn11NRzDqCX for ; Thu, 9 Apr 2020 01:37:25 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48y7Zg1dc8zDqWK for ; Thu, 9 Apr 2020 01:32:57 +1000 (AEST) Received: by verein.lst.de (Postfix, from userid 2407) id 7D40368CEC; Wed, 8 Apr 2020 17:32:45 +0200 (CEST) Date: Wed, 8 Apr 2020 17:32:44 +0200 From: Christoph Hellwig To: Mark Rutland Subject: Re: [PATCH 18/28] mm: enforce that vmap can't map pages executable Message-ID: <20200408153244.GA27818@lst.de> References: <20200408115926.1467567-1-hch@lst.de> <20200408115926.1467567-19-hch@lst.de> <20200408123835.GB36478@lakrids.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200408123835.GB36478@lakrids.cambridge.arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-hyperv@vger.kernel.org, David Airlie , Catalin marinas , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, "K. Y. Srinivasan" , Will Deacon , Sumit Semwal , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Wei Liu , Stephen Hemminger , x86@kernel.org, Christoph Hellwig , Peter Zijlstra , Laura Abbott , Nitin Gupta , Daniel Vetter , Haiyang Zhang , linaro-mm-sig@lists.linaro.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Robin Murphy , linux-kernel@vger.kernel.org, Minchan Kim , iommu@lists.linux-foundation.org, Sakari Ailus , Andrew Morton , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Apr 08, 2020 at 01:38:36PM +0100, Mark Rutland wrote: > > +static inline pgprot_t pgprot_nx(pgprot_t prot) > > +{ > > + return __pgprot(pgprot_val(prot) | _PAGE_NX); > > +} > > +#define pgprot_nx pgprot_nx > > + > > #ifdef CONFIG_X86_PAE > > I reckon for arm64 we can do similar in our : > > #define pgprot_nx(pgprot_t prot) \ > __pgprot_modify(prot, 0, PTE_PXN) > > ... matching the style of our existing pgprot_*() modifier helpers. I've added that for the next version with attribution to you.