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Sun, 22 Aug 2021 23:56:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxeDlxuu1bqct4xksqs7isW8FxpMxOH+GNhpdYUwjloBQhDlJbitQ/vFhNd4D+BhyIvDS4Fgg== X-Received: by 2002:aa7:9ddc:0:b0:3e1:5fc1:1d20 with SMTP id g28-20020aa79ddc000000b003e15fc11d20mr32664016pfq.48.1629701807013; Sun, 22 Aug 2021 23:56:47 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id n30sm14807096pfv.87.2021.08.22.23.56.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Aug 2021 23:56:46 -0700 (PDT) Subject: Re: [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace To: Xie Yongji , mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org, gregkh@linuxfoundation.org, zhe.he@windriver.com, xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com References: <20210818120642.165-1-xieyongji@bytedance.com> <20210818120642.165-12-xieyongji@bytedance.com> From: Jason Wang Message-ID: Date: Mon, 23 Aug 2021 14:56:33 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210818120642.165-12-xieyongji@bytedance.com> 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@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, songmuchun@bytedance.com, linux-fsdevel@vger.kernel.org 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="gbk"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" CtTaIDIwMjEvOC8xOCDPws7nODowNiwgWGllIFlvbmdqaSDQtLXAOgo+IFRoaXMgVkRVU0UgZHJp dmVyIGVuYWJsZXMgaW1wbGVtZW50aW5nIHNvZnR3YXJlLWVtdWxhdGVkIHZEUEEKPiBkZXZpY2Vz IGluIHVzZXJzcGFjZS4gVGhlIHZEUEEgZGV2aWNlIGlzIGNyZWF0ZWQgYnkKPiBpb2N0bChWRFVT RV9DUkVBVEVfREVWKSBvbiAvZGV2L3ZkdXNlL2NvbnRyb2wuIFRoZW4gYSBjaGFyIGRldmljZQo+ IGludGVyZmFjZSAoL2Rldi92ZHVzZS8kTkFNRSkgaXMgZXhwb3J0ZWQgdG8gdXNlcnNwYWNlIGZv ciBkZXZpY2UKPiBlbXVsYXRpb24uCj4KPiBJbiBvcmRlciB0byBtYWtlIHRoZSBkZXZpY2UgZW11 bGF0aW9uIG1vcmUgc2VjdXJlLCB0aGUgZGV2aWNlJ3MKPiBjb250cm9sIHBhdGggaXMgaGFuZGxl ZCBpbiBrZXJuZWwuIEEgbWVzc2FnZSBtZWNobmlzbSBpcyBpbnRyb2R1Y2VkCj4gdG8gZm9yd2Fy ZCBzb21lIGRhdGFwbGFuZSByZWxhdGVkIGNvbnRyb2wgbWVzc2FnZXMgdG8gdXNlcnNwYWNlLgo+ Cj4gQW5kIGluIHRoZSBkYXRhIHBhdGgsIHRoZSBETUEgYnVmZmVyIHdpbGwgYmUgbWFwcGVkIGlu dG8gdXNlcnNwYWNlCj4gYWRkcmVzcyBzcGFjZSB0aHJvdWdoIGRpZmZlcmVudCB3YXlzIGRlcGVu ZGluZyBvbiB0aGUgdkRQQSBidXMgdG8KPiB3aGljaCB0aGUgdkRQQSBkZXZpY2UgaXMgYXR0YWNo ZWQuIEluIHZpcnRpby12ZHBhIGNhc2UsIHRoZSBNTVUtYmFzZWQKPiBzb2Z0d2FyZSBJT1RMQiBp cyB1c2VkIHRvIGFjaGlldmUgdGhhdC4gQW5kIGluIHZob3N0LXZkcGEgY2FzZSwgdGhlCj4gRE1B IGJ1ZmZlciBpcyByZXNpZGUgaW4gYSB1c2Vyc3BhY2UgbWVtb3J5IHJlZ2lvbiB3aGljaCBjYW4g YmUgc2hhcmVkCj4gdG8gdGhlIFZEVVNFIHVzZXJzcGFjZSBwcm9jZXNzcyB2aWEgdHJhbnNmZXJy aW5nIHRoZSBzaG1mZC4KPgo+IEZvciBtb3JlIGRldGFpbHMgb24gVkRVU0UgZGVzaWduIGFuZCB1 c2FnZSwgcGxlYXNlIHNlZSB0aGUgZm9sbG93LW9uCj4gRG9jdW1lbnRhdGlvbiBjb21taXQuCj4K PiBTaWduZWQtb2ZmLWJ5OiBYaWUgWW9uZ2ppIDx4aWV5b25namlAYnl0ZWRhbmNlLmNvbT4KCgpB Y2tlZC1ieTogSmFzb24gV2FuZyA8amFzb3dhbmdAcmVkaGF0LmNvbT4KCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9t bXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRp b24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=