From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A0E921B29C1 for ; Thu, 20 Jun 2024 17:45:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718905549; cv=none; b=AxYGrZ+2rQwxb4ANl1WjROns8W3e+D66sUm2+9JDfoajUCz5nBdvoxrByfD0C2nNZmMyGnlpLH+n4LolZOQYrQ3AXnU0yO+0Oup0e0qkEi+/IEfRD1fIwqq3aP+HlestqvjznABpOL6VGZvVnmbXSUNma5M4h1qZ/bom6tOXFro= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718905549; c=relaxed/simple; bh=XOwNc6dLGOy86io2R+RNVlyBfA3E/E8Ktuof6MS0iLo=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Ug6hME2HYzruKSheywgNkwf1C2JhLWj2L/vJheoI7lHdAmKELSKLgx4juGA2Z700OsH84YnCqIOZzV2YDlssH11uzAPw86LaWeBdNelH446WOsxeoQvhXhf8VDQe974PEgOdMLtvb89YPl5L7+zeWogoqwreYNGerkMVZTBxNpQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4W4nvp3K3yz6J9x8; Fri, 21 Jun 2024 01:45:42 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id EACBB1402C6; Fri, 21 Jun 2024 01:45:44 +0800 (CST) Received: from localhost (10.203.174.77) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 20 Jun 2024 18:45:44 +0100 Date: Thu, 20 Jun 2024 18:45:43 +0100 From: Jonathan Cameron To: Dan Williams CC: , , Adam Manzanares Subject: Re: [PATCH] Documentation: CXL Maturity Map Message-ID: <20240620184543.00004ff1@Huawei.com> In-Reply-To: <6670bdb69f996_3101294b8@dwillia2-xfh.jf.intel.com.notmuch> References: <171659842954.843002.8140957498380360424.stgit@dwillia2-xfh.jf.intel.com> <20240606154001.00000507@Huawei.com> <6670bdb69f996_3101294b8@dwillia2-xfh.jf.intel.com.notmuch> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml100002.china.huawei.com (7.191.160.241) To lhrpeml500005.china.huawei.com (7.191.163.240) ling, or kernel enabling not required > > > + > > > +Feature and Capabilities > > > +======================== > > > + > > > +Enumeration / Provisioning > > > +-------------------------- > > > +All of the fundamental enumeration an object model of the subsystem is > > > +in place, but there are several corner cases that are pending closure. > > > + > > > > Feels like we should in passing mention that we support none of the > > bits of CXL fabrics that are host visible (so mainly G-FAM I think). > > > > [0] Fabrics / G-FAM (chapter 7) > > [0] Global Access Enpoint > > Are those [0] or [X], not even sure what the kernel is expected to do with those? I'm not 100% sure, but they are host programmable and there are a bunch of more general structures to program that are 'kind of like' the hdm decoders with stuff like interleave setup. So I think [0] but I've really not figure out the expected software model for that stuff yet. Jonathan