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Sun, 22 Aug 2021 23:24:55 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwYnrO75usjjlrGCgZzdsLDtPE2dKORuqu4cQ6/SLHByjgTAawINCsTeerUMEDWc0TN8ooDAw== X-Received: by 2002:a17:90a:b016:: with SMTP id x22mr7315281pjq.205.1629699895193; Sun, 22 Aug 2021 23:24:55 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id g3sm14314416pfi.197.2021.08.22.23.24.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Aug 2021 23:24:54 -0700 (PDT) Subject: Re: [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast() 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> <20210818120642.165-2-xieyongji@bytedance.com> From: Jason Wang Message-ID: <3ff77bab-8bb7-ae5b-4cf1-a90ebcc00118@redhat.com> Date: Mon, 23 Aug 2021 14:24:42 +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: <20210818120642.165-2-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+IEV4cG9ydCBhbGxvY19p b3ZhX2Zhc3QoKSBhbmQgZnJlZV9pb3ZhX2Zhc3QoKSBzbyB0aGF0Cj4gc29tZSBtb2R1bGVzIGNh biBtYWtlIHVzZSBvZiB0aGUgcGVyLUNQVSBjYWNoZSB0byBnZXQKPiByaWQgb2YgcmJ0cmVlIHNw aW5sb2NrIGluIGFsbG9jX2lvdmEoKSBhbmQgZnJlZV9pb3ZhKCkKPiBkdXJpbmcgSU9WQSBhbGxv Y2F0aW9uLgo+Cj4gU2lnbmVkLW9mZi1ieTogWGllIFlvbmdqaSA8eGlleW9uZ2ppQGJ5dGVkYW5j ZS5jb20+CgoKQWNrZWQtYnk6IEphc29uIFdhbmcgPGphc293YW5nQHJlZGhhdC5jb20+CgooSWYg d2UgbmVlZCByZXNwaW4sIEknZCBzdWdnZXN0IHRvIHB1dCB0aGUgbnVtYmVycyB5b3UgbWVhc3Vy ZWQgaGVyZSkKClRoYW5rcwoKCj4gLS0tCj4gICBkcml2ZXJzL2lvbW11L2lvdmEuYyB8IDIgKysK PiAgIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKykKPgo+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL2lvbW11L2lvdmEuYyBiL2RyaXZlcnMvaW9tbXUvaW92YS5jCj4gaW5kZXggYjZjZjVmMTYx MjNiLi4zOTQxZWQ2YmI5OWIgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9pb21tdS9pb3ZhLmMKPiAr KysgYi9kcml2ZXJzL2lvbW11L2lvdmEuYwo+IEBAIC01MjEsNiArNTIxLDcgQEAgYWxsb2NfaW92 YV9mYXN0KHN0cnVjdCBpb3ZhX2RvbWFpbiAqaW92YWQsIHVuc2lnbmVkIGxvbmcgc2l6ZSwKPiAg IAo+ICAgCXJldHVybiBuZXdfaW92YS0+cGZuX2xvOwo+ICAgfQo+ICtFWFBPUlRfU1lNQk9MX0dQ TChhbGxvY19pb3ZhX2Zhc3QpOwo+ICAgCj4gICAvKioKPiAgICAqIGZyZWVfaW92YV9mYXN0IC0g ZnJlZSBpb3ZhIHBmbiByYW5nZSBpbnRvIHJjYWNoZQo+IEBAIC01MzgsNiArNTM5LDcgQEAgZnJl ZV9pb3ZhX2Zhc3Qoc3RydWN0IGlvdmFfZG9tYWluICppb3ZhZCwgdW5zaWduZWQgbG9uZyBwZm4s IHVuc2lnbmVkIGxvbmcgc2l6ZSkKPiAgIAo+ICAgCWZyZWVfaW92YShpb3ZhZCwgcGZuKTsKPiAg IH0KPiArRVhQT1JUX1NZTUJPTF9HUEwoZnJlZV9pb3ZhX2Zhc3QpOwo+ICAgCj4gICAjZGVmaW5l IGZxX3JpbmdfZm9yX2VhY2goaSwgZnEpIFwKPiAgIAlmb3IgKChpKSA9IChmcSktPmhlYWQ7IChp KSAhPSAoZnEpLT50YWlsOyAoaSkgPSAoKGkpICsgMSkgJSBJT1ZBX0ZRX1NJWkUpCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxp c3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZv dW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=