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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E818AC433F5 for ; Fri, 19 Nov 2021 03:26:47 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 A19AA61A81 for ; Fri, 19 Nov 2021 03:26:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A19AA61A81 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:58434 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mnuY2-0007zD-KX for qemu-devel@archiver.kernel.org; Thu, 18 Nov 2021 22:26:46 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44246) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mnuXG-0007FZ-H3 for qemu-devel@nongnu.org; Thu, 18 Nov 2021 22:25:59 -0500 Received: from mga09.intel.com ([134.134.136.24]:33920) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mnuXB-0007Ay-Pm for qemu-devel@nongnu.org; Thu, 18 Nov 2021 22:25:57 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10172"; a="234180255" X-IronPort-AV: E=Sophos;i="5.87,246,1631602800"; d="scan'208";a="234180255" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Nov 2021 19:25:42 -0800 X-IronPort-AV: E=Sophos;i="5.87,246,1631602800"; d="scan'208";a="495689013" Received: from dmkresin-mobl1.amr.corp.intel.com (HELO intel.com) ([10.252.138.155]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Nov 2021 19:25:42 -0800 Date: Thu, 18 Nov 2021 19:25:41 -0800 From: Ben Widawsky To: Shreyas Shah Subject: Re: Follow-up on the CXL discussion at OFTC Message-ID: <20211119032541.gr6berwu2ve4tkax@intel.com> References: <20211117165719.pqig62t5z2grgjvv@intel.com> <20211117173201.00002513@Huawei.com> <20211119014822.j247ayrsdve4yxyu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=134.134.136.24; envelope-from=ben.widawsky@intel.com; helo=mga09.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "qemu-devel@nongnu.org" , "linux-cxl@vger.kernel.org" , Saransh Gupta1 , Jonathan Cameron Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 21-11-19 02:29:51, Shreyas Shah wrote: > Hi Ben > > Are you planning to add the CXL2.0 switch inside QEMU or already added in one of the version? > >From me, there are no plans for QEMU anything until/unless upstream thinks it will merge the existing patches, or provide feedback as to what it would take to get them merged. If upstream doesn't see a point in these patches, then I really don't see much value in continuing to further them. Once hardware comes out, the value proposition is certainly less. Having said that, once I get the port/region patches merged for the Linux driver, I do intend to go back and try to implement a basic switch so that we can test those flows. I admit, I'm curious why you're interested in switches. > Regards, > Shreyas > > -----Original Message----- > From: Ben Widawsky > Sent: Thursday, November 18, 2021 5:48 PM > To: Shreyas Shah > Cc: Saransh Gupta1 ; Jonathan Cameron ; linux-cxl@vger.kernel.org; qemu-devel@nongnu.org > Subject: Re: Follow-up on the CXL discussion at OFTC > > On 21-11-18 22:52:56, Shreyas Shah wrote: > > Hello Folks, > > > > Any plan to add CXL2.0 switch ports in QEMU? > > What's your definition of plan? > > > > > Regards, > > Shreyas > > [snip]