Received: by 2002:a25:868d:0:0:0:0:0 with SMTP id z13csp740355ybk; Wed, 20 May 2020 10:45:39 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxK/7J5w63aEwGS+D52x5/2L0SwJWCnEmMJctoHpMLJXBTMebyhAIeyQMFHZRci7By2KhRG X-Received: by 2002:a17:906:a1c9:: with SMTP id bx9mr176205ejb.496.1589996739711; Wed, 20 May 2020 10:45:39 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1589996739; cv=none; d=google.com; s=arc-20160816; b=uqcoyhZfgFO2K30/vuzUHokYw/AUGZ3Uy1FnHq3sM0Jhp2O8WlQIqJPrp7YVpNzyF+ +MZeM1FAouDlL4fxlY3zbDhu5PHUS3NzaZvsNd/6kQp/1CtA/SpI2wM63mvFBP/FxD8a iro5uArN0+G50LghG7NL8gM811MOybzNUt38zUWf/OKJ5HUdh4RFoLRHtZZH++iNH3Kw fvdQR6Z0utZbpflXkGqUnoUnANPLIBssX7iXQTomqWkwE5W6hFPn98S8skvOooCcHHI0 b4kKDiwSxfe7qYNZgSiiVzpT2nySJlx1duSJzlXTJ8slwnXrwlRbEuVmkITU2zHZjJ39 PM7w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=72/myqImacqZvgA/Df7tM4W80PT1FO6/o07rXUy1dH4=; b=sOk4RhKvLef6Y1fBF1ReLTr7efOyb0zH02bloNxgQtVp6DM/Gl830Dyz2Y6sdEfyBS TwtQ28xjkAXW3LzWBaMMLdlxxzvrncC0H44ytVt9uCoBctwvJ9Zkdglv8J9L9LMTXHuo GJkE+Te/0m1u6jNgWwZbL5tznO1lKtRh73gyMFXjkP3VWsMNOWF6AKRbrwNP8XlFauqD CFjksjOhqjGt47X87lR7bI+rBRovhnZBSOOCK0uPq17TQRzzFkOvNZU3ubeEGBGfw1Dq 0OK7Eroes9Z06espYeufOsUdGt1SFv8zv4CZNflBeyjIDIFqRfm1wmlBjeE7fTlcrWoK 9ocg== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b="Il+/zPYl"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id i10si1928154ejx.250.2020.05.20.10.45.17; Wed, 20 May 2020 10:45:39 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b="Il+/zPYl"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726859AbgETRn5 (ORCPT + 99 others); Wed, 20 May 2020 13:43:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726619AbgETRn5 (ORCPT ); Wed, 20 May 2020 13:43:57 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45BB9C061A0E; Wed, 20 May 2020 10:43:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=72/myqImacqZvgA/Df7tM4W80PT1FO6/o07rXUy1dH4=; b=Il+/zPYl2NlqSMAoFu30IRTSjY qAqRcgvOOfLXUpfM5ePlyGF7j7lXgyyJ6SErXmiH99NPFl8224Hm4TrNU3wuvVeB8D0LuWGrzrqTo 2Dj43BzPzcBSwFmJIQh0R/aS8xpR9Xxx0AYNNLl+gIrYiwKG1SSa6zGkMnqhBCjVpY/w3y7N4Q0P/ 478g/Q9fVjPXKiE/9mk6LOfAjwqXCn5StnSrQPrD62zl/F9E/9dqM6W7TJWeAvXXppdbOs8eKuGRL V2gS68V4zL+xtZD2BakQcJNwY51dpW5jre6H6jGAf00+EwGtIVhg2oeIH+DcXI7HbrMLrmmsLzTXg SSHCH04Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jbSl2-0000AA-DN; Wed, 20 May 2020 17:43:56 +0000 Date: Wed, 20 May 2020 10:43:56 -0700 From: Christoph Hellwig To: Sean V Kelley Cc: bhelgaas@google.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH V2 3/3] PCI: Add helpers to enable/disable CXL.mem and CXL.cache Message-ID: <20200520174356.GA26878@infradead.org> References: <20200518163523.1225643-1-sean.v.kelley@linux.intel.com> <20200518163523.1225643-4-sean.v.kelley@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200518163523.1225643-4-sean.v.kelley@linux.intel.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 18, 2020 at 09:35:23AM -0700, Sean V Kelley wrote: > With these helpers, a device driver can enable/disable access to > CXL.mem and CXL.cache. Note that the device driver is responsible for > managing the memory area. Who is going to call these? Please don't submit new APIs without users.