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_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 69A68C11F64 for ; Thu, 1 Jul 2021 10:26:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4796F6145E for ; Thu, 1 Jul 2021 10:26:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236008AbhGAK3H (ORCPT ); Thu, 1 Jul 2021 06:29:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235887AbhGAK3E (ORCPT ); Thu, 1 Jul 2021 06:29:04 -0400 Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D138C0617AE for ; Thu, 1 Jul 2021 03:26:34 -0700 (PDT) Received: by mail-ed1-x52b.google.com with SMTP id df12so7680219edb.2 for ; Thu, 01 Jul 2021 03:26:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=a9K4jyXYx47Q8btyuDKrrTrq0PEaaUA3+QP6HJIrGos=; b=UbsrHWUQ+mj/292xk46YRGIEWdXS7+QUOxq+6nNb3yIUs4zHYJrkuHGgQOce8DFrQe md9AW7iO+3I2/Gy/0pAB4ksC45W+234IMOkL++jK9Ut5s1vRLJE3bHdXjN761/r4oe2f rrENVsppo3Jrt+VvPkoj8uviilfOhQYD1fLZsSYmxlaq+oX/ZAl36g/kjQIzB82UT/ci MsYhbtWrw18oEv5eBIolntsiKHP3qi59dFbBWXD2KwR7OAOnPaSBv5xvF7/vHO2gDnY9 DYJCzMg6LY4GJsFkzIZYE13B6X8/NPbpnEh/pX4mSS3+UYLngtGXoFLSkaU2VGZ/3SUB VdKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=a9K4jyXYx47Q8btyuDKrrTrq0PEaaUA3+QP6HJIrGos=; b=WePhK1k5PV+gYJKSukFAHYCfEGxY+00bfOozeRV36OFx2RPto710eEy/S9kQVeBP+t yzV8NeU6Rgb6/nJx//s3HoMFtawahxAepUUJsW+iKQUNyB5bSai3ffvq5E6A3VmWwZGr +Oi1bXudFGWRUqZlinhBvN183+YPjo37u/qqyTCqr7ZfkdWGv78MaOtZBBOG8N6dALBF 7vEHA+Ex9lxgjo2/x+NCxHJVotO9XZNyZZSLIWO75pQTPNH/82+K3NNHYCYcQNq41ZyW +954OCkbusWAE0gbJQeDu/+U7rxfmCIlf1Olro4MRBHrVd5s9e1O/2LSHo/yF7i8+SWZ Io1Q== X-Gm-Message-State: AOAM533CpMNcD9vv9dQ4F+y2GQ00bofYVovDjClt48bsgSPQbxnsROLQ rc+AkBxxH6N12p7l9iBetGp52rxZ1sJdPqPiZLIv X-Google-Smtp-Source: ABdhPJz1/meMgJS0CbGomq08efo6oPox9DOh/ZiqfZwarY0z7LVGZFk2nW7ff1FIg7dKAGvVHmDMMOZVK5XkBCN2Y10= X-Received: by 2002:a50:ff01:: with SMTP id a1mr52286665edu.253.1625135192829; Thu, 01 Jul 2021 03:26:32 -0700 (PDT) MIME-Version: 1.0 References: <20210615141331.407-1-xieyongji@bytedance.com> <20210615141331.407-10-xieyongji@bytedance.com> <7264cb0b-7072-098e-3d22-2b7e89216545@redhat.com> In-Reply-To: <7264cb0b-7072-098e-3d22-2b7e89216545@redhat.com> From: Yongji Xie Date: Thu, 1 Jul 2021 18:26:21 +0800 Message-ID: Subject: Re: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Jason Wang Cc: Stefan Hajnoczi , "Michael S. Tsirkin" , Stefano Garzarella , Parav Pandit , Christoph Hellwig , Christian Brauner , Randy Dunlap , Matthew Wilcox , Al Viro , Jens Axboe , bcrl@kvack.org, Jonathan Corbet , =?UTF-8?Q?Mika_Penttil=C3=A4?= , Dan Carpenter , joro@8bytes.org, Greg KH , songmuchun@bytedance.com, virtualization , netdev@vger.kernel.org, kvm , linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 1, 2021 at 3:55 PM Jason Wang wrote: > > > =E5=9C=A8 2021/7/1 =E4=B8=8B=E5=8D=882:50, Yongji Xie =E5=86=99=E9=81=93: > > On Wed, Jun 30, 2021 at 5:51 PM Stefan Hajnoczi w= rote: > >> On Tue, Jun 29, 2021 at 10:59:51AM +0800, Yongji Xie wrote: > >>> On Mon, Jun 28, 2021 at 9:02 PM Stefan Hajnoczi = wrote: > >>>> On Tue, Jun 15, 2021 at 10:13:30PM +0800, Xie Yongji wrote: > >>>>> +/* ioctls */ > >>>>> + > >>>>> +struct vduse_dev_config { > >>>>> + char name[VDUSE_NAME_MAX]; /* vduse device name */ > >>>>> + __u32 vendor_id; /* virtio vendor id */ > >>>>> + __u32 device_id; /* virtio device id */ > >>>>> + __u64 features; /* device features */ > >>>>> + __u64 bounce_size; /* bounce buffer size for iommu */ > >>>>> + __u16 vq_size_max; /* the max size of virtqueue */ > >>>> The VIRTIO specification allows per-virtqueue sizes. A device can ha= ve > >>>> two virtqueues, where the first one allows up to 1024 descriptors an= d > >>>> the second one allows only 128 descriptors, for example. > >>>> > >>> Good point! But it looks like virtio-vdpa/virtio-pci doesn't support > >>> that now. All virtqueues have the same maximum size. > >> I see struct vpda_config_ops only supports a per-device max vq size: > >> u16 (*get_vq_num_max)(struct vdpa_device *vdev); > >> > >> virtio-pci supports per-virtqueue sizes because the struct > >> virtio_pci_common_cfg->queue_size register is per-queue (controlled by > >> queue_select). > >> > > Oh, yes. I miss queue_select. > > > >> I guess this is a question for Jason: will vdpa will keep this limitat= ion? > >> If yes, then VDUSE can stick to it too without running into problems i= n > >> the future. > > > I think it's better to extend the get_vq_num_max() per virtqueue. > > Currently, vDPA assumes the parent to have a global max size. This seems > to work on most of the parents but not vp-vDPA (which could be backed by > QEMU, in that case cvq's size is smaller). > > Fortunately, we haven't enabled had cvq support in the userspace now. > > I can post the fixes. > OK. If so, it looks like we need to support the per-vq configuration. I wonder if it's better to use something like: VDUSE_CREATE_DEVICE -> VDUSE_SETUP_VQ -> VDUSE_SETUP_VQ -> ... -> VDUSE_ENABLE_DEVICE to do initialization rather than only use VDUSE_CREATE_DEVICE. Thanks, Yongji 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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_RED 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 43A76C11F69 for ; Thu, 1 Jul 2021 10:26:40 +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 EB2246148E for ; Thu, 1 Jul 2021 10:26:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EB2246148E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bytedance.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id B246B83C4C; Thu, 1 Jul 2021 10:26:39 +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 jkhEISUqW_ud; Thu, 1 Jul 2021 10:26:38 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id 916A88280E; Thu, 1 Jul 2021 10:26:38 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 648ECC0010; Thu, 1 Jul 2021 10:26:38 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5D639C000E for ; Thu, 1 Jul 2021 10:26:36 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 4B6D64013A for ; Thu, 1 Jul 2021 10:26:36 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=bytedance-com.20150623.gappssmtp.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EX8Kr2MCPCnE for ; Thu, 1 Jul 2021 10:26:35 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by smtp2.osuosl.org (Postfix) with ESMTPS id C9E4C400CD for ; Thu, 1 Jul 2021 10:26:34 +0000 (UTC) Received: by mail-ed1-x529.google.com with SMTP id i5so7703417eds.1 for ; Thu, 01 Jul 2021 03:26:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=a9K4jyXYx47Q8btyuDKrrTrq0PEaaUA3+QP6HJIrGos=; b=UbsrHWUQ+mj/292xk46YRGIEWdXS7+QUOxq+6nNb3yIUs4zHYJrkuHGgQOce8DFrQe md9AW7iO+3I2/Gy/0pAB4ksC45W+234IMOkL++jK9Ut5s1vRLJE3bHdXjN761/r4oe2f rrENVsppo3Jrt+VvPkoj8uviilfOhQYD1fLZsSYmxlaq+oX/ZAl36g/kjQIzB82UT/ci MsYhbtWrw18oEv5eBIolntsiKHP3qi59dFbBWXD2KwR7OAOnPaSBv5xvF7/vHO2gDnY9 DYJCzMg6LY4GJsFkzIZYE13B6X8/NPbpnEh/pX4mSS3+UYLngtGXoFLSkaU2VGZ/3SUB VdKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=a9K4jyXYx47Q8btyuDKrrTrq0PEaaUA3+QP6HJIrGos=; b=YCkv/L0sRkffq/EGex7xHCsojoXVDjvJZGgyMGvgoyg4hSlKs3HZxuGpkzEueLzqX/ rCyV9R7zNF0BQvMZL5m7tYl+wwis9ovvesi31jTGTSkqfPmsTs+bzEYgdyooiP8NX22N n4jrAH7/+uYHpB5qZDhxtDC3TtJbKrO/PAsDK+TmR7A35dxnwzNWpJyr6C5eRasa1UP/ kDae6DIOJyRmtNbkt2IZAHrgNU1D1tlQZMxoOWgW3zqQuWrzhWMw0ooOaZ1FqNskatg3 ir4oKGj1JsSOUeVPo2TGGbus0wzr8AX14PNq9UCt+sVjRSHsjc/cG4tbPT2tcmJtteRn jkfA== X-Gm-Message-State: AOAM533v/27czPc8i5cZftBJ5DRfjId7iUO5LlX+6nZc7A6bnj0XUdHf iUJNZaEVI7uC+eTv5QalsGsyC+8L9zxn7q7KI3QF X-Google-Smtp-Source: ABdhPJz1/meMgJS0CbGomq08efo6oPox9DOh/ZiqfZwarY0z7LVGZFk2nW7ff1FIg7dKAGvVHmDMMOZVK5XkBCN2Y10= X-Received: by 2002:a50:ff01:: with SMTP id a1mr52286665edu.253.1625135192829; Thu, 01 Jul 2021 03:26:32 -0700 (PDT) MIME-Version: 1.0 References: <20210615141331.407-1-xieyongji@bytedance.com> <20210615141331.407-10-xieyongji@bytedance.com> <7264cb0b-7072-098e-3d22-2b7e89216545@redhat.com> In-Reply-To: <7264cb0b-7072-098e-3d22-2b7e89216545@redhat.com> From: Yongji Xie Date: Thu, 1 Jul 2021 18:26:21 +0800 Message-ID: Subject: Re: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Jason Wang Cc: kvm , "Michael S. Tsirkin" , virtualization , Christian Brauner , Jonathan Corbet , Matthew Wilcox , Christoph Hellwig , Dan Carpenter , Stefano Garzarella , Al Viro , Stefan Hajnoczi , songmuchun@bytedance.com, Jens Axboe , Greg KH , Randy Dunlap , linux-kernel , iommu@lists.linux-foundation.org, bcrl@kvack.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, =?UTF-8?Q?Mika_Penttil=C3=A4?= X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gVGh1LCBKdWwgMSwgMjAyMSBhdCAzOjU1IFBNIEphc29uIFdhbmcgPGphc293YW5nQHJlZGhh dC5jb20+IHdyb3RlOgo+Cj4KPiDlnKggMjAyMS83LzEg5LiL5Y2IMjo1MCwgWW9uZ2ppIFhpZSDl hpnpgZM6Cj4gPiBPbiBXZWQsIEp1biAzMCwgMjAyMSBhdCA1OjUxIFBNIFN0ZWZhbiBIYWpub2N6 aSA8c3RlZmFuaGFAcmVkaGF0LmNvbT4gd3JvdGU6Cj4gPj4gT24gVHVlLCBKdW4gMjksIDIwMjEg YXQgMTA6NTk6NTFBTSArMDgwMCwgWW9uZ2ppIFhpZSB3cm90ZToKPiA+Pj4gT24gTW9uLCBKdW4g MjgsIDIwMjEgYXQgOTowMiBQTSBTdGVmYW4gSGFqbm9jemkgPHN0ZWZhbmhhQHJlZGhhdC5jb20+ IHdyb3RlOgo+ID4+Pj4gT24gVHVlLCBKdW4gMTUsIDIwMjEgYXQgMTA6MTM6MzBQTSArMDgwMCwg WGllIFlvbmdqaSB3cm90ZToKPiA+Pj4+PiArLyogaW9jdGxzICovCj4gPj4+Pj4gKwo+ID4+Pj4+ ICtzdHJ1Y3QgdmR1c2VfZGV2X2NvbmZpZyB7Cj4gPj4+Pj4gKyAgICAgY2hhciBuYW1lW1ZEVVNF X05BTUVfTUFYXTsgLyogdmR1c2UgZGV2aWNlIG5hbWUgKi8KPiA+Pj4+PiArICAgICBfX3UzMiB2 ZW5kb3JfaWQ7IC8qIHZpcnRpbyB2ZW5kb3IgaWQgKi8KPiA+Pj4+PiArICAgICBfX3UzMiBkZXZp Y2VfaWQ7IC8qIHZpcnRpbyBkZXZpY2UgaWQgKi8KPiA+Pj4+PiArICAgICBfX3U2NCBmZWF0dXJl czsgLyogZGV2aWNlIGZlYXR1cmVzICovCj4gPj4+Pj4gKyAgICAgX191NjQgYm91bmNlX3NpemU7 IC8qIGJvdW5jZSBidWZmZXIgc2l6ZSBmb3IgaW9tbXUgKi8KPiA+Pj4+PiArICAgICBfX3UxNiB2 cV9zaXplX21heDsgLyogdGhlIG1heCBzaXplIG9mIHZpcnRxdWV1ZSAqLwo+ID4+Pj4gVGhlIFZJ UlRJTyBzcGVjaWZpY2F0aW9uIGFsbG93cyBwZXItdmlydHF1ZXVlIHNpemVzLiBBIGRldmljZSBj YW4gaGF2ZQo+ID4+Pj4gdHdvIHZpcnRxdWV1ZXMsIHdoZXJlIHRoZSBmaXJzdCBvbmUgYWxsb3dz IHVwIHRvIDEwMjQgZGVzY3JpcHRvcnMgYW5kCj4gPj4+PiB0aGUgc2Vjb25kIG9uZSBhbGxvd3Mg b25seSAxMjggZGVzY3JpcHRvcnMsIGZvciBleGFtcGxlLgo+ID4+Pj4KPiA+Pj4gR29vZCBwb2lu dCEgQnV0IGl0IGxvb2tzIGxpa2UgdmlydGlvLXZkcGEvdmlydGlvLXBjaSBkb2Vzbid0IHN1cHBv cnQKPiA+Pj4gdGhhdCBub3cuIEFsbCB2aXJ0cXVldWVzIGhhdmUgdGhlIHNhbWUgbWF4aW11bSBz aXplLgo+ID4+IEkgc2VlIHN0cnVjdCB2cGRhX2NvbmZpZ19vcHMgb25seSBzdXBwb3J0cyBhIHBl ci1kZXZpY2UgbWF4IHZxIHNpemU6Cj4gPj4gdTE2ICgqZ2V0X3ZxX251bV9tYXgpKHN0cnVjdCB2 ZHBhX2RldmljZSAqdmRldik7Cj4gPj4KPiA+PiB2aXJ0aW8tcGNpIHN1cHBvcnRzIHBlci12aXJ0 cXVldWUgc2l6ZXMgYmVjYXVzZSB0aGUgc3RydWN0Cj4gPj4gdmlydGlvX3BjaV9jb21tb25fY2Zn LT5xdWV1ZV9zaXplIHJlZ2lzdGVyIGlzIHBlci1xdWV1ZSAoY29udHJvbGxlZCBieQo+ID4+IHF1 ZXVlX3NlbGVjdCkuCj4gPj4KPiA+IE9oLCB5ZXMuIEkgbWlzcyBxdWV1ZV9zZWxlY3QuCj4gPgo+ ID4+IEkgZ3Vlc3MgdGhpcyBpcyBhIHF1ZXN0aW9uIGZvciBKYXNvbjogd2lsbCB2ZHBhIHdpbGwg a2VlcCB0aGlzIGxpbWl0YXRpb24/Cj4gPj4gSWYgeWVzLCB0aGVuIFZEVVNFIGNhbiBzdGljayB0 byBpdCB0b28gd2l0aG91dCBydW5uaW5nIGludG8gcHJvYmxlbXMgaW4KPiA+PiB0aGUgZnV0dXJl Lgo+Cj4KPiBJIHRoaW5rIGl0J3MgYmV0dGVyIHRvIGV4dGVuZCB0aGUgZ2V0X3ZxX251bV9tYXgo KSBwZXIgdmlydHF1ZXVlLgo+Cj4gQ3VycmVudGx5LCB2RFBBIGFzc3VtZXMgdGhlIHBhcmVudCB0 byBoYXZlIGEgZ2xvYmFsIG1heCBzaXplLiBUaGlzIHNlZW1zCj4gdG8gd29yayBvbiBtb3N0IG9m IHRoZSBwYXJlbnRzIGJ1dCBub3QgdnAtdkRQQSAod2hpY2ggY291bGQgYmUgYmFja2VkIGJ5Cj4g UUVNVSwgaW4gdGhhdCBjYXNlIGN2cSdzIHNpemUgaXMgc21hbGxlcikuCj4KPiBGb3J0dW5hdGVs eSwgd2UgaGF2ZW4ndCBlbmFibGVkIGhhZCBjdnEgc3VwcG9ydCBpbiB0aGUgdXNlcnNwYWNlIG5v dy4KPgo+IEkgY2FuIHBvc3QgdGhlIGZpeGVzLgo+CgpPSy4gSWYgc28sIGl0IGxvb2tzIGxpa2Ug d2UgbmVlZCB0byBzdXBwb3J0IHRoZSBwZXItdnEgY29uZmlndXJhdGlvbi4KSSB3b25kZXIgaWYg aXQncyBiZXR0ZXIgdG8gdXNlIHNvbWV0aGluZyBsaWtlOiBWRFVTRV9DUkVBVEVfREVWSUNFIC0+ ClZEVVNFX1NFVFVQX1ZRIC0+IFZEVVNFX1NFVFVQX1ZRIC0+IC4uLiAtPiBWRFVTRV9FTkFCTEVf REVWSUNFIHRvIGRvCmluaXRpYWxpemF0aW9uIHJhdGhlciB0aGFuIG9ubHkgdXNlIFZEVVNFX0NS RUFURV9ERVZJQ0UuCgpUaGFua3MsCllvbmdqaQpfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgt Zm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4v bGlzdGluZm8vaW9tbXU=