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 0EBC3C433EF for ; Mon, 11 Oct 2021 08:32:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECD2960C4B for ; Mon, 11 Oct 2021 08:32:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235053AbhJKIe5 (ORCPT ); Mon, 11 Oct 2021 04:34:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234985AbhJKIez (ORCPT ); Mon, 11 Oct 2021 04:34:55 -0400 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFDA2C061745 for ; Mon, 11 Oct 2021 01:32:55 -0700 (PDT) Received: by mail-ed1-x532.google.com with SMTP id g10so63890003edj.1 for ; Mon, 11 Oct 2021 01:32:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=rOXsNrzY60uI0pgR5Z0rE9TCYzMRKq69zTlRtW3ar3Q=; b=5Txo6x8f7LWi46N7oevu7OqzhT5gQ6mWAJ0kCcEy7l0G5xbs0/cfrXAFjSgzZW7poC xPNpiPAMkDYw0WvSsXVOvtyfVRobeTrXmvFg+uCwQqOajlSd1qQJbdrxrr30tJD8WYNL gd5tFDjPHyLI/HMIO/XjNa6hVC7rA3LaTPW7sShkm5p/y9/uYxFEGp6eWDNRnNTKPbXy x/Xd7D+s4rmvMvZapMyOK/wVnge1mfOlD5mjse2c/uCU1FsiiL/9+qrjcvLQqdciyqZs dk8UVLQRqC8Smgr/o8QSlb9aCgudkRHkkcM6DRh9XLsiCfV2YkpY1ruVRqXnlW2INYt3 A+Pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=rOXsNrzY60uI0pgR5Z0rE9TCYzMRKq69zTlRtW3ar3Q=; b=KcsN0wES66b7y7K+MPF/X7mHrVYX7wrTanyaVZlfjLceF0AxVxWltaHHrAntvzoh7M NmLovotm2mXxI2UbOBC2PmYOhQRXz39NCjr0ovXzGH5B36JB68DrHcKtYWFPCqhRUVuP ti17J1dc7t80ME/zSLvpNuVbRvKG10AqNcLKq+Pv9mOdzcVSoE2fOj7jeAFXe0XwuYB9 OHaD+B9aLOAmsA3OdVFgDtV5xRlLj5AMt0lzyHkyEieGEyRLTmAGmV8BbuxEsMzEENqZ hwvz3+qgGfgrKgdv4Knn+K/Htn4G0yDfQZbV2MOYaafpSLCgP7LcHjJmvzlJErlWl2dL 5plA== X-Gm-Message-State: AOAM532xEPYyQWlp1jG5W9RaoWHTQu28sJC29zLrgNebJpqHVkTIQwGu m9BSqzIyxZXJ7W8CoaUUQEQ/GIMftN1p21JjcehI X-Google-Smtp-Source: ABdhPJw0UGeuT5H5fcyL/6kzs+woGkopnu5gM0tI+8BJ6+813tHOWdOiXRVmSnyFXI6wzyWYaRuttbrMNqUffSWsei8= X-Received: by 2002:a50:d88b:: with SMTP id p11mr39341822edj.287.1633941174303; Mon, 11 Oct 2021 01:32:54 -0700 (PDT) MIME-Version: 1.0 References: <20210831103634.33-1-xieyongji@bytedance.com> <6163E8A1.8080901@huawei.com> In-Reply-To: From: Yongji Xie Date: Mon, 11 Oct 2021 16:32:43 +0800 Message-ID: Subject: Re: [PATCH v13 00/13] Introduce VDUSE - vDPA Device in Userspace To: Liuxiangdong Cc: "Fangyi (Eric)" , yebiaoxiang@huawei.com, x86@kernel.org, kvm , linux-fsdevel@vger.kernel.org, linux-kernel Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 11, 2021 at 4:31 PM Yongji Xie wrote: > > Hi Xiaodong, > > On Mon, Oct 11, 2021 at 3:32 PM Liuxiangdong wrote: > > > > Hi, Yongji. > > > > I tried vduse with null-blk: > > > > $ qemu-storage-daemon \ > > --chardev socket,id=charmonitor,path=/tmp/qmp.sock,server,nowait \ > > --monitor chardev=charmonitor \ > > --blockdev > > driver=host_device,cache.direct=on,aio=native,filename=/dev/nullb0,node-name=disk0 > > \ > > --export > > type=vduse-blk,id=test,node-name=disk0,writable=on,name=vduse-null,num-queues=16,queue-size=128 > > > > The qemu-storage-daemon is yours > > (https://github.com/bytedance/qemu/tree/vduse) > > > > And then, how can we use this vduse-null (dev/vduse/vduse-null) in vm(QEMU)? > > > > Then we need to attach this device to vdpa bus via vdpa tool [1]: > > # vdpa dev add vduse-null mgmtdev vduse > It should be: # vdpa dev add name vduse-null mgmtdev vduse Thanks, Yongji