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=-7.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 4889AC11F67 for ; Tue, 29 Jun 2021 03:29:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F79761D30 for ; Tue, 29 Jun 2021 03:29:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231949AbhF2DcK (ORCPT ); Mon, 28 Jun 2021 23:32:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:49340 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231856AbhF2DcI (ORCPT ); Mon, 28 Jun 2021 23:32:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624937381; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2Pa1pOlVAvZjnb70QATIYkocaWNNRWiFDRdCDmMIsd8=; b=gDqfj9rX8rqZCojYY0oHCfBhS/e0zviI0vG5ixXtKXz9pa09e3jgiY93XCagKHEM9BwBvh LbJ+bSCFYjIsDMqIBjGafHHTTklf+NHwX4DKd4K9pdoePlVZeEqSngYs31FekOusBPMmV+ rYqOLxQs0cHhMLR5XvXT3HssUYfLrmY= Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-242-YHaZ-TnkOcmJozMFdTBo3A-1; Mon, 28 Jun 2021 23:29:39 -0400 X-MC-Unique: YHaZ-TnkOcmJozMFdTBo3A-1 Received: by mail-pj1-f71.google.com with SMTP id cp14-20020a17090afb8eb029017094b4d856so1311773pjb.7 for ; Mon, 28 Jun 2021 20:29:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=2Pa1pOlVAvZjnb70QATIYkocaWNNRWiFDRdCDmMIsd8=; b=IFh2KN07jA/Nn+39Ua6q8PbevPBvo/QSLPo1XRWcTy9GP1D/uqZAi9pVEYXQDJauRt uZ+cceJM5Kvyy/js0pAlj2JAyinOnErbVF4x+qy+8vviVs487A2DXIuJIzanYcwUpMNJ yo7IiFoq0WiUtozU5J93/OVuft48uBaVqjXBr6VUAD6RhlQjFVU7yHf1qrP0NfVXakcC 3RD4EFax6/dOZ3vNoV7qdojN/zL8HJXlHfEq+b1J+Gd+d6sX2YkI8kL3OXNDSBhBj2kS gqgguxwFa63R3fZAuleiONEY7PUh1AKZgMfEqFysDMbtlya5fqSzsR9IB4NQCQci/NJ5 L5nA== X-Gm-Message-State: AOAM532GDFFegMt7ta+O5T4URq561pS8ir1votrdCgmxIgK9QLQtqtnO Dd6+UzMnQS0lW7vFMa/BXYML/lK64bP7cE9DCsNZXXpLMY3aQh6fbdQKG9aJ4dLCFzr6AIfERSf aQuepT0ZIs3c3GdjDiXUcaVUNL6lXQhejmfXLtI1jkGroUEDfcXJJkoJJJURbwptz4PtFpbrETd RD X-Received: by 2002:a05:6a00:1742:b029:308:add4:e844 with SMTP id j2-20020a056a001742b0290308add4e844mr24162945pfc.18.1624937378638; Mon, 28 Jun 2021 20:29:38 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwry9N+QCFjvNGydIUFQnfZliYwOwU3q6M/FQals9i/JHLqA6RP5KnmC4UjhvxUQDox0iXaLQ== X-Received: by 2002:a05:6a00:1742:b029:308:add4:e844 with SMTP id j2-20020a056a001742b0290308add4e844mr24162907pfc.18.1624937378357; Mon, 28 Jun 2021 20:29:38 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id w21sm1920153pge.30.2021.06.28.20.29.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Jun 2021 20:29:37 -0700 (PDT) Subject: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Yongji Xie Cc: "Michael S. Tsirkin" , Stefan Hajnoczi , 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 References: <20210615141331.407-1-xieyongji@bytedance.com> <1bba439f-ffc8-c20e-e8a4-ac73e890c592@redhat.com> <0aeb7cb7-58e5-1a95-d830-68edd7e8ec2e@redhat.com> <48cab125-093b-2299-ff9c-3de8c7c5ed3d@redhat.com> From: Jason Wang Message-ID: Date: Tue, 29 Jun 2021 11:29:25 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2021/6/29 上午10:26, Yongji Xie 写道: > On Mon, Jun 28, 2021 at 12:40 PM Jason Wang wrote: >> >> 在 2021/6/25 下午12:19, Yongji Xie 写道: >>>> 2b) for set_status(): simply relay the message to userspace, reply is no >>>> needed. Userspace will use a command to update the status when the >>>> datapath is stop. The the status could be fetched via get_stats(). >>>> >>>> 2b looks more spec complaint. >>>> >>> Looks good to me. And I think we can use the reply of the message to >>> update the status instead of introducing a new command. >>> >> Just notice this part in virtio_finalize_features(): >> >> virtio_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); >> status = dev->config->get_status(dev); >> if (!(status & VIRTIO_CONFIG_S_FEATURES_OK)) { >> >> So we no reply doesn't work for FEATURES_OK. >> >> So my understanding is: >> >> 1) We must not use noreply for set_status() >> 2) We can use noreply for get_status(), but it requires a new ioctl to >> update the status. >> >> So it looks to me we need synchronize for both get_status() and >> set_status(). >> > We should not send messages to userspace in the FEATURES_OK case. So > the synchronization is not necessary. As discussed previously, there could be a device that mandates some features (VIRTIO_F_RING_PACKED). So it can choose to not accept FEATURES_OK is packed virtqueue is not negotiated. In this case we need to relay the message to userspace. Thanks > > 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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 205E2C11F65 for ; Tue, 29 Jun 2021 03:29:48 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 B557361D1C for ; Tue, 29 Jun 2021 03:29:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B557361D1C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; 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Mon, 28 Jun 2021 20:29:38 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwry9N+QCFjvNGydIUFQnfZliYwOwU3q6M/FQals9i/JHLqA6RP5KnmC4UjhvxUQDox0iXaLQ== X-Received: by 2002:a05:6a00:1742:b029:308:add4:e844 with SMTP id j2-20020a056a001742b0290308add4e844mr24162907pfc.18.1624937378357; Mon, 28 Jun 2021 20:29:38 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id w21sm1920153pge.30.2021.06.28.20.29.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Jun 2021 20:29:37 -0700 (PDT) Subject: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Yongji Xie References: <20210615141331.407-1-xieyongji@bytedance.com> <1bba439f-ffc8-c20e-e8a4-ac73e890c592@redhat.com> <0aeb7cb7-58e5-1a95-d830-68edd7e8ec2e@redhat.com> <48cab125-093b-2299-ff9c-3de8c7c5ed3d@redhat.com> From: Jason Wang Message-ID: Date: Tue, 29 Jun 2021 11:29:25 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; 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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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" CuWcqCAyMDIxLzYvMjkg5LiK5Y2IMTA6MjYsIFlvbmdqaSBYaWUg5YaZ6YGTOgo+IE9uIE1vbiwg SnVuIDI4LCAyMDIxIGF0IDEyOjQwIFBNIEphc29uIFdhbmcgPGphc293YW5nQHJlZGhhdC5jb20+ IHdyb3RlOgo+Pgo+PiDlnKggMjAyMS82LzI1IOS4i+WNiDEyOjE5LCBZb25namkgWGllIOWGmemB kzoKPj4+PiAyYikgZm9yIHNldF9zdGF0dXMoKTogc2ltcGx5IHJlbGF5IHRoZSBtZXNzYWdlIHRv IHVzZXJzcGFjZSwgcmVwbHkgaXMgbm8KPj4+PiBuZWVkZWQuIFVzZXJzcGFjZSB3aWxsIHVzZSBh IGNvbW1hbmQgdG8gdXBkYXRlIHRoZSBzdGF0dXMgd2hlbiB0aGUKPj4+PiBkYXRhcGF0aCBpcyBz dG9wLiBUaGUgdGhlIHN0YXR1cyBjb3VsZCBiZSBmZXRjaGVkIHZpYSBnZXRfc3RhdHMoKS4KPj4+ Pgo+Pj4+IDJiIGxvb2tzIG1vcmUgc3BlYyBjb21wbGFpbnQuCj4+Pj4KPj4+IExvb2tzIGdvb2Qg dG8gbWUuIEFuZCBJIHRoaW5rIHdlIGNhbiB1c2UgdGhlIHJlcGx5IG9mIHRoZSBtZXNzYWdlIHRv Cj4+PiB1cGRhdGUgdGhlIHN0YXR1cyBpbnN0ZWFkIG9mIGludHJvZHVjaW5nIGEgbmV3IGNvbW1h bmQuCj4+Pgo+PiBKdXN0IG5vdGljZSB0aGlzIHBhcnQgaW4gdmlydGlvX2ZpbmFsaXplX2ZlYXR1 cmVzKCk6Cj4+Cj4+ICAgICAgICAgICB2aXJ0aW9fYWRkX3N0YXR1cyhkZXYsIFZJUlRJT19DT05G SUdfU19GRUFUVVJFU19PSyk7Cj4+ICAgICAgICAgICBzdGF0dXMgPSBkZXYtPmNvbmZpZy0+Z2V0 X3N0YXR1cyhkZXYpOwo+PiAgICAgICAgICAgaWYgKCEoc3RhdHVzICYgVklSVElPX0NPTkZJR19T X0ZFQVRVUkVTX09LKSkgewo+Pgo+PiBTbyB3ZSBubyByZXBseSBkb2Vzbid0IHdvcmsgZm9yIEZF QVRVUkVTX09LLgo+Pgo+PiBTbyBteSB1bmRlcnN0YW5kaW5nIGlzOgo+Pgo+PiAxKSBXZSBtdXN0 IG5vdCB1c2Ugbm9yZXBseSBmb3Igc2V0X3N0YXR1cygpCj4+IDIpIFdlIGNhbiB1c2Ugbm9yZXBs eSBmb3IgZ2V0X3N0YXR1cygpLCBidXQgaXQgcmVxdWlyZXMgYSBuZXcgaW9jdGwgdG8KPj4gdXBk YXRlIHRoZSBzdGF0dXMuCj4+Cj4+IFNvIGl0IGxvb2tzIHRvIG1lIHdlIG5lZWQgc3luY2hyb25p emUgZm9yIGJvdGggZ2V0X3N0YXR1cygpIGFuZAo+PiBzZXRfc3RhdHVzKCkuCj4+Cj4gV2Ugc2hv dWxkIG5vdCBzZW5kIG1lc3NhZ2VzIHRvIHVzZXJzcGFjZSBpbiB0aGUgRkVBVFVSRVNfT0sgY2Fz ZS4gU28KPiB0aGUgc3luY2hyb25pemF0aW9uIGlzIG5vdCBuZWNlc3NhcnkuCgoKQXMgZGlzY3Vz c2VkIHByZXZpb3VzbHksIHRoZXJlIGNvdWxkIGJlIGEgZGV2aWNlIHRoYXQgbWFuZGF0ZXMgc29t ZSAKZmVhdHVyZXMgKFZJUlRJT19GX1JJTkdfUEFDS0VEKS4gU28gaXQgY2FuIGNob29zZSB0byBu b3QgYWNjZXB0IApGRUFUVVJFU19PSyBpcyBwYWNrZWQgdmlydHF1ZXVlIGlzIG5vdCBuZWdvdGlh dGVkLgoKSW4gdGhpcyBjYXNlIHdlIG5lZWQgdG8gcmVsYXkgdGhlIG1lc3NhZ2UgdG8gdXNlcnNw YWNlLgoKVGhhbmtzCgoKPgo+IFRoYW5rcywKPiBZb25namkKPgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxp c3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11 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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 9C181C11F66 for ; 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Mon, 28 Jun 2021 20:29:38 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id w21sm1920153pge.30.2021.06.28.20.29.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Jun 2021 20:29:37 -0700 (PDT) Subject: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Yongji Xie References: <20210615141331.407-1-xieyongji@bytedance.com> <1bba439f-ffc8-c20e-e8a4-ac73e890c592@redhat.com> <0aeb7cb7-58e5-1a95-d830-68edd7e8ec2e@redhat.com> <48cab125-093b-2299-ff9c-3de8c7c5ed3d@redhat.com> From: Jason Wang Message-ID: Date: Tue, 29 Jun 2021 11:29:25 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: kvm , "Michael S. Tsirkin" , virtualization , Christian Brauner , Jonathan Corbet , joro@8bytes.org, Matthew Wilcox , Christoph Hellwig , Dan Carpenter , 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: 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" CuWcqCAyMDIxLzYvMjkg5LiK5Y2IMTA6MjYsIFlvbmdqaSBYaWUg5YaZ6YGTOgo+IE9uIE1vbiwg SnVuIDI4LCAyMDIxIGF0IDEyOjQwIFBNIEphc29uIFdhbmcgPGphc293YW5nQHJlZGhhdC5jb20+ IHdyb3RlOgo+Pgo+PiDlnKggMjAyMS82LzI1IOS4i+WNiDEyOjE5LCBZb25namkgWGllIOWGmemB kzoKPj4+PiAyYikgZm9yIHNldF9zdGF0dXMoKTogc2ltcGx5IHJlbGF5IHRoZSBtZXNzYWdlIHRv IHVzZXJzcGFjZSwgcmVwbHkgaXMgbm8KPj4+PiBuZWVkZWQuIFVzZXJzcGFjZSB3aWxsIHVzZSBh IGNvbW1hbmQgdG8gdXBkYXRlIHRoZSBzdGF0dXMgd2hlbiB0aGUKPj4+PiBkYXRhcGF0aCBpcyBz dG9wLiBUaGUgdGhlIHN0YXR1cyBjb3VsZCBiZSBmZXRjaGVkIHZpYSBnZXRfc3RhdHMoKS4KPj4+ Pgo+Pj4+IDJiIGxvb2tzIG1vcmUgc3BlYyBjb21wbGFpbnQuCj4+Pj4KPj4+IExvb2tzIGdvb2Qg dG8gbWUuIEFuZCBJIHRoaW5rIHdlIGNhbiB1c2UgdGhlIHJlcGx5IG9mIHRoZSBtZXNzYWdlIHRv Cj4+PiB1cGRhdGUgdGhlIHN0YXR1cyBpbnN0ZWFkIG9mIGludHJvZHVjaW5nIGEgbmV3IGNvbW1h bmQuCj4+Pgo+PiBKdXN0IG5vdGljZSB0aGlzIHBhcnQgaW4gdmlydGlvX2ZpbmFsaXplX2ZlYXR1 cmVzKCk6Cj4+Cj4+ICAgICAgICAgICB2aXJ0aW9fYWRkX3N0YXR1cyhkZXYsIFZJUlRJT19DT05G SUdfU19GRUFUVVJFU19PSyk7Cj4+ICAgICAgICAgICBzdGF0dXMgPSBkZXYtPmNvbmZpZy0+Z2V0 X3N0YXR1cyhkZXYpOwo+PiAgICAgICAgICAgaWYgKCEoc3RhdHVzICYgVklSVElPX0NPTkZJR19T X0ZFQVRVUkVTX09LKSkgewo+Pgo+PiBTbyB3ZSBubyByZXBseSBkb2Vzbid0IHdvcmsgZm9yIEZF QVRVUkVTX09LLgo+Pgo+PiBTbyBteSB1bmRlcnN0YW5kaW5nIGlzOgo+Pgo+PiAxKSBXZSBtdXN0 IG5vdCB1c2Ugbm9yZXBseSBmb3Igc2V0X3N0YXR1cygpCj4+IDIpIFdlIGNhbiB1c2Ugbm9yZXBs eSBmb3IgZ2V0X3N0YXR1cygpLCBidXQgaXQgcmVxdWlyZXMgYSBuZXcgaW9jdGwgdG8KPj4gdXBk YXRlIHRoZSBzdGF0dXMuCj4+Cj4+IFNvIGl0IGxvb2tzIHRvIG1lIHdlIG5lZWQgc3luY2hyb25p emUgZm9yIGJvdGggZ2V0X3N0YXR1cygpIGFuZAo+PiBzZXRfc3RhdHVzKCkuCj4+Cj4gV2Ugc2hv dWxkIG5vdCBzZW5kIG1lc3NhZ2VzIHRvIHVzZXJzcGFjZSBpbiB0aGUgRkVBVFVSRVNfT0sgY2Fz ZS4gU28KPiB0aGUgc3luY2hyb25pemF0aW9uIGlzIG5vdCBuZWNlc3NhcnkuCgoKQXMgZGlzY3Vz c2VkIHByZXZpb3VzbHksIHRoZXJlIGNvdWxkIGJlIGEgZGV2aWNlIHRoYXQgbWFuZGF0ZXMgc29t ZSAKZmVhdHVyZXMgKFZJUlRJT19GX1JJTkdfUEFDS0VEKS4gU28gaXQgY2FuIGNob29zZSB0byBu b3QgYWNjZXB0IApGRUFUVVJFU19PSyBpcyBwYWNrZWQgdmlydHF1ZXVlIGlzIG5vdCBuZWdvdGlh dGVkLgoKSW4gdGhpcyBjYXNlIHdlIG5lZWQgdG8gcmVsYXkgdGhlIG1lc3NhZ2UgdG8gdXNlcnNw YWNlLgoKVGhhbmtzCgoKPgo+IFRoYW5rcywKPiBZb25namkKPgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVhbGl6YXRpb24gbWFpbGluZyBsaXN0 ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMu bGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3ZpcnR1YWxpemF0aW9u