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=-23.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 A06FFC433DB for ; Sat, 30 Jan 2021 23:54:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7197464E17 for ; Sat, 30 Jan 2021 23:54:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232776AbhA3XyA (ORCPT ); Sat, 30 Jan 2021 18:54:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232630AbhA3XwV (ORCPT ); Sat, 30 Jan 2021 18:52:21 -0500 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B98EDC061574 for ; Sat, 30 Jan 2021 15:51:41 -0800 (PST) Received: by mail-pj1-x1029.google.com with SMTP id g15so8791280pjd.2 for ; Sat, 30 Jan 2021 15:51:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:in-reply-to:message-id:references :mime-version; bh=cxvqbAo1IAIrwLB5kk+h8Luaw/WcNq7od57uwR/z/0A=; b=PjLjww8QTw6X6rVMAjtISyXtX7JMmqVaUJx3F60RM3ylFSLWRRcZCFrQlsjCSBGBqx Oj3eIeIel+lx5s/2LzA2cqzsOlBvs+jrSV4AXQBePenX9TqRNh4fBF2xa1vy/ZURdeOn +lhC0/eWjRwZcBS/1uE7a0/fxUpCmQEsIlkvVUw8XTrYgT7HEkD84ilH2PhECtGuizOl 3L/Qf/himoTN1JGUyeYCivImS0tAyPYb9OeJvkMbXST578xzSCdUkQFxivOMQrwZRtAE nxCiaSxwoehw8rIP5fQZOuvdxKVzXZHozdLwXh4cjAQrPf6k9Zf1rWPHmWo72HtJywGU U2Sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:in-reply-to:message-id :references:mime-version; bh=cxvqbAo1IAIrwLB5kk+h8Luaw/WcNq7od57uwR/z/0A=; b=pZd4viC1CFN6lxIn42hgJ3sh52FlIpsp8CMrdzpuuprDd27rQJF4E7nySBr+AyCCkZ dDLIGUMQk8zKiCAztxOnCEDb/rY4+MnmgdiXTEWTgBcXq0VQl6FE5S14XkdkFY1vMobc 599ycgBugCM7Hjohhyx2P4/UX6Y0VG9CCngrb2CiWieTfkkSBxMS0riprnpfNjvNh53u v6hLotwAR4SvXS0x5q/jWSvikndlW+RpzHd/FVmHJBZ2DTrJRJPf2+nahWjdQh4bw4wj iUSDNkQpscaZQP80PtVI12aXSb0Ay6w8q1SDHG8zXOEYdw0FhsC7xZhJnM+xxIPwxauP wQxA== X-Gm-Message-State: AOAM532oHFojNo2TJuGtu8h2w2oID9uIC7YXNDyY6+0t//aMP+LXeqS/ m90FxXj5vIpsOfHwtNSC/DT8Bg== X-Google-Smtp-Source: ABdhPJyDODycXpp/h5ITu3myrcAhtELZTjRYPPBKofKsdhKWkycX4cAiMkSboMfRs6hOUzcld1n8Cw== X-Received: by 2002:a17:902:edcd:b029:df:d2b1:ecf0 with SMTP id q13-20020a170902edcdb02900dfd2b1ecf0mr11639635plk.15.1612050701068; Sat, 30 Jan 2021 15:51:41 -0800 (PST) Received: from [2620:15c:17:3:4a0f:cfff:fe51:6667] ([2620:15c:17:3:4a0f:cfff:fe51:6667]) by smtp.gmail.com with ESMTPSA id c5sm12745797pfi.5.2021.01.30.15.51.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 Jan 2021 15:51:40 -0800 (PST) Date: Sat, 30 Jan 2021 15:51:39 -0800 (PST) From: David Rientjes To: Ben Widawsky cc: linux-cxl@vger.kernel.org, Dan Williams , Jonathan Corbet , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, Bjorn Helgaas , Chris Browy , Christoph Hellwig , Ira Weiny , Jon Masters , Jonathan Cameron , Rafael Wysocki , Randy Dunlap , Vishal Verma , daniel.lll@alibaba-inc.com, "John Groves (jgroves)" , "Kelley, Sean V" Subject: Re: [PATCH 01/14] cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints In-Reply-To: <20210130002438.1872527-2-ben.widawsky@intel.com> Message-ID: <54655f17-2e4a-cc1e-262c-b365e3de9b20@google.com> References: <20210130002438.1872527-1-ben.widawsky@intel.com> <20210130002438.1872527-2-ben.widawsky@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 29 Jan 2021, Ben Widawsky wrote: > diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig > new file mode 100644 > index 000000000000..3b66b46af8a0 > --- /dev/null > +++ b/drivers/cxl/Kconfig > @@ -0,0 +1,35 @@ > +# SPDX-License-Identifier: GPL-2.0-only > +menuconfig CXL_BUS > + tristate "CXL (Compute Express Link) Devices Support" > + depends on PCI > + help > + CXL is a bus that is electrically compatible with PCI Express, but > + layers three protocols on that signalling (CXL.io, CXL.cache, and > + CXL.mem). The CXL.cache protocol allows devices to hold cachelines > + locally, the CXL.mem protocol allows devices to be fully coherent > + memory targets, the CXL.io protocol is equivalent to PCI Express. > + Say 'y' to enable support for the configuration and management of > + devices supporting these protocols. > + > +if CXL_BUS > + > +config CXL_MEM > + tristate "CXL.mem: Endpoint Support" Nit: "CXL.mem: Memory Devices" or "CXL Memory Devices: CXL.mem" might look better, but feel free to ignore. Acked-by: David Rientjes