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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 68CAFC433F5 for ; Wed, 22 Sep 2021 13:06:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 20806611C6 for ; Wed, 22 Sep 2021 13:06:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230200AbhIVNHn (ORCPT ); Wed, 22 Sep 2021 09:07:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:39046 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230064AbhIVNHn (ORCPT ); Wed, 22 Sep 2021 09:07:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9F7D1611CA; Wed, 22 Sep 2021 13:06:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632315973; bh=oNdKNGeEDSMsQZb0QR79jAvNFQsEnJOIQSDq8mmnnzs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZmZut9FaGDBMBk0SNp1LqarjL1dNIa9LJeP0D32JOFaldMmVLyxNsVJ5ye+/213Vb Y046E+hu85twyYidfc5wmzc5AmSKuc+XzHEgENvVUzw8bRu5CSGd5JJ2siUC9sjmmK cX83OJtY+o4t2AZ9D3hXac09JxL7f/a4uYR9TLVg0j7ZYKpSPvFrQlq30WzyPHa6OT 5AIha5qJjIg+YSHBe58gEGciD3IPjh9f1quU8Ay3WYTdk+GbuatGI+3QG6cPJuNp/0 fru4jCWvG50H6w/4YLaxXYgzhZL82FCR5vR0sbMrjZzxgDsHUFugPDQDkbA25HUO1j O7AhSCzM57NFg== Date: Wed, 22 Sep 2021 16:06:09 +0300 From: Leon Romanovsky To: Junji Wei Cc: Jason Gunthorpe , Doug Ledford , mst , Jason Wang , yuval.shaia.ml@gmail.com, marcel.apfelbaum@gmail.com, Cornelia Huck , Hannes Reinecke , Yongji Xie , =?utf-8?B?5p+056iz?= , RDMA mailing list , virtualization , qemu-devel Subject: Re: [RFC 0/5] VirtIO RDMA Message-ID: References: <20210902130625.25277-1-weijunji@bytedance.com> <20210915134301.GA211485@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote: > > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe wrote: <...> > >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR. > >> But it is impossible to change a key of mr using uverbs. > > > > FRMR is more like memory windows in user space, you can't support it > > using just regular MRs. > > It is hard to support this using uverbs, but it is easy to support > with uRDMA that we can get full control of mrs. What is uRDMA? Thanks 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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 A3A9DC433EF for ; Wed, 22 Sep 2021 13:06:21 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 5630B6120F for ; Wed, 22 Sep 2021 13:06:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5630B6120F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 248958423E; Wed, 22 Sep 2021 13:06:21 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sUHU4nYJaoO4; Wed, 22 Sep 2021 13:06:17 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id B002B84231; Wed, 22 Sep 2021 13:06:16 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 82FD6C000F; Wed, 22 Sep 2021 13:06:16 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id E6A69C000D for ; Wed, 22 Sep 2021 13:06:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id D6914613D0 for ; Wed, 22 Sep 2021 13:06:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=kernel.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NXgLM_i9gTiX for ; Wed, 22 Sep 2021 13:06:13 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp3.osuosl.org (Postfix) with ESMTPS id C2857613D8 for ; Wed, 22 Sep 2021 13:06:13 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 9F7D1611CA; Wed, 22 Sep 2021 13:06:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632315973; bh=oNdKNGeEDSMsQZb0QR79jAvNFQsEnJOIQSDq8mmnnzs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZmZut9FaGDBMBk0SNp1LqarjL1dNIa9LJeP0D32JOFaldMmVLyxNsVJ5ye+/213Vb Y046E+hu85twyYidfc5wmzc5AmSKuc+XzHEgENvVUzw8bRu5CSGd5JJ2siUC9sjmmK cX83OJtY+o4t2AZ9D3hXac09JxL7f/a4uYR9TLVg0j7ZYKpSPvFrQlq30WzyPHa6OT 5AIha5qJjIg+YSHBe58gEGciD3IPjh9f1quU8Ay3WYTdk+GbuatGI+3QG6cPJuNp/0 fru4jCWvG50H6w/4YLaxXYgzhZL82FCR5vR0sbMrjZzxgDsHUFugPDQDkbA25HUO1j O7AhSCzM57NFg== Date: Wed, 22 Sep 2021 16:06:09 +0300 From: Leon Romanovsky To: Junji Wei Subject: Re: [RFC 0/5] VirtIO RDMA Message-ID: References: <20210902130625.25277-1-weijunji@bytedance.com> <20210915134301.GA211485@nvidia.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Cc: qemu-devel , Jason Gunthorpe , mst , RDMA mailing list , Cornelia Huck , yuval.shaia.ml@gmail.com, virtualization , Yongji Xie , Doug Ledford , =?utf-8?B?5p+056iz?= X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote: > > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe wrote: <...> > >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR. > >> But it is impossible to change a key of mr using uverbs. > > > > FRMR is more like memory windows in user space, you can't support it > > using just regular MRs. > > It is hard to support this using uverbs, but it is easy to support > with uRDMA that we can get full control of mrs. What is uRDMA? Thanks _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization 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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 92AB8C433EF for ; Wed, 22 Sep 2021 13:09:08 +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 3C30060F6D for ; Wed, 22 Sep 2021 13:09:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3C30060F6D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:40188 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mT1zn-0004BI-4R for qemu-devel@archiver.kernel.org; Wed, 22 Sep 2021 09:09:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48258) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mT1x6-0001km-Qc for qemu-devel@nongnu.org; Wed, 22 Sep 2021 09:06:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:52950) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mT1x3-00083L-RW for qemu-devel@nongnu.org; Wed, 22 Sep 2021 09:06:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9F7D1611CA; Wed, 22 Sep 2021 13:06:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632315973; bh=oNdKNGeEDSMsQZb0QR79jAvNFQsEnJOIQSDq8mmnnzs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZmZut9FaGDBMBk0SNp1LqarjL1dNIa9LJeP0D32JOFaldMmVLyxNsVJ5ye+/213Vb Y046E+hu85twyYidfc5wmzc5AmSKuc+XzHEgENvVUzw8bRu5CSGd5JJ2siUC9sjmmK cX83OJtY+o4t2AZ9D3hXac09JxL7f/a4uYR9TLVg0j7ZYKpSPvFrQlq30WzyPHa6OT 5AIha5qJjIg+YSHBe58gEGciD3IPjh9f1quU8Ay3WYTdk+GbuatGI+3QG6cPJuNp/0 fru4jCWvG50H6w/4YLaxXYgzhZL82FCR5vR0sbMrjZzxgDsHUFugPDQDkbA25HUO1j O7AhSCzM57NFg== Date: Wed, 22 Sep 2021 16:06:09 +0300 From: Leon Romanovsky To: Junji Wei Subject: Re: [RFC 0/5] VirtIO RDMA Message-ID: References: <20210902130625.25277-1-weijunji@bytedance.com> <20210915134301.GA211485@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=198.145.29.99; envelope-from=leon@kernel.org; helo=mail.kernel.org X-Spam_score_int: -85 X-Spam_score: -8.6 X-Spam_bar: -------- X-Spam_report: (-8.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.472, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_HI=-5, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel , Jason Gunthorpe , mst , RDMA mailing list , Jason Wang , Cornelia Huck , yuval.shaia.ml@gmail.com, virtualization , Yongji Xie , Doug Ledford , =?utf-8?B?5p+056iz?= , Hannes Reinecke Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote: > > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe wrote: <...> > >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR. > >> But it is impossible to change a key of mr using uverbs. > > > > FRMR is more like memory windows in user space, you can't support it > > using just regular MRs. > > It is hard to support this using uverbs, but it is easy to support > with uRDMA that we can get full control of mrs. What is uRDMA? Thanks