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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DE19C433F5 for ; Wed, 16 Feb 2022 12:06:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232698AbiBPMHJ (ORCPT ); Wed, 16 Feb 2022 07:07:09 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:38764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230057AbiBPMHI (ORCPT ); Wed, 16 Feb 2022 07:07:08 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D24A6B2503 for ; Wed, 16 Feb 2022 04:06:55 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6C04861AA9 for ; Wed, 16 Feb 2022 12:06:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 170E9C004E1; Wed, 16 Feb 2022 12:06:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645013214; bh=ykPLsLzu0GtvBRAL3pPs3MDhQ7pY/2XqmFLJKqVGZ9o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ooAxwvHXaBaj4ShT71fsc+PQhJjDEf/yZ+KI5SShbRfPqkImKux5SAFWP7It5jm2d BgPlRe6pFfBIHwcjovS6/UUIJ+ykVxgITN5IglNqxiXyazcun0Fe0Ehpc4EE7/DtfV nCbTrXyzuTPUxmMS2V5nwHoPQiyKJfhDXWRsCm3S1iN/XgcaDnDA5GG5TpZJlc7qIl NtWqERPzfjRsL9Zxf6VsYouxfWGVy7gh1HRm86e23R4xV4vKkieOqs0eddVPrOpYmz MvcgDIrjZT2Y11Y4F4hwXX3Pm5C4glpNe76VABiJ/zuFcD+dTxC+KxUi5duwXWAG0z gsXzdUkpGJmlg== Date: Wed, 16 Feb 2022 14:06:50 +0200 From: Leon Romanovsky To: Junji Wei Cc: Jason Wang , Doug Ledford , Jason Gunthorpe , mst , yuval.shaia.ml@gmail.com, Marcel Apfelbaum , Cornelia Huck , Hannes Reinecke , Virtio-Dev , Yongji Xie , =?utf-8?B?5p+056iz?= , Xiongchun Duan , zhoujielong@bytedance.com, zhangqianyu.sys@bytedance.com, RDMA mailing list Subject: Re: [virtio-dev] Re: [RFC] Virtio RDMA Message-ID: References: <19CC8304-C2B3-45A7-BFDB-28E9D0D4A02A@bytedance.com> <2818E401-AA08-42DB-90C0-75B199ECE47E@bytedance.com> <38D3D312-E507-426F-BB3E-211AC273593B@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <38D3D312-E507-426F-BB3E-211AC273593B@bytedance.com> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Wed, Feb 16, 2022 at 06:03:29PM +0800, Junji Wei wrote: > > > On Feb 16, 2022, at 5:48 PM, Leon Romanovsky wrote: > > > > On Wed, Feb 16, 2022 at 04:00:53PM +0800, Junji Wei wrote: > > > > <...> > > > >>> > >>> What is the use case for this virtio-rdma? Especially in context of RXE. > >> > >> Hmm... yes, we didn’t find one. In passthrough case we can use RXE directly. > > > > It doesn't sound like a good sales pitch. > > Maybe I misunderstanded what you mean. We mean we didn’t find a user case > for virtio-rdma with passthrough net device. Do you want to know the user > case for our virtio-rdma(RoCE) proposal? Yes, please. > > Thanks. >