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Wed, 02 Jun 2021 01:58:21 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw/hC2DUGaHASQJ2eBIgS4POmbF/OU0iTy4EElTI9I8lf554Diw4PoXXYk+RPG+3MuIoH1a7g== X-Received: by 2002:a63:e642:: with SMTP id p2mr31912901pgj.316.1622624301050; Wed, 02 Jun 2021 01:58:21 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id m134sm4163818pfd.148.2021.06.02.01.58.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Jun 2021 01:58:20 -0700 (PDT) Subject: Re: [RFC] /dev/ioasid uAPI proposal To: Jason Gunthorpe References: <20210531164118.265789ee@yiliu-dev> <78ee2638-1a03-fcc8-50a5-81040f677e69@redhat.com> <20210601113152.6d09e47b@yiliu-dev> <164ee532-17b0-e180-81d3-12d49b82ac9f@redhat.com> <64898584-a482-e6ac-fd71-23549368c508@linux.intel.com> <429d9c2f-3597-eb29-7764-fad3ec9a934f@redhat.com> <05d7f790-870d-5551-1ced-86926a0aa1a6@redhat.com> <20210601172956.GL1002214@nvidia.com> From: Jason Wang Message-ID: Date: Wed, 2 Jun 2021 16:58:13 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210601172956.GL1002214@nvidia.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: "Tian, Kevin" , "kvm@vger.kernel.org" , Jonathan Corbet , LKML , "iommu@lists.linux-foundation.org" , "Alex Williamson \(alex.williamson@redhat.com\)\"\"" , David Woodhouse 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" CtTaIDIwMjEvNi8yIMnPzucxOjI5LCBKYXNvbiBHdW50aG9ycGUg0LS1wDoKPiBPbiBUdWUsIEp1 biAwMSwgMjAyMSBhdCAwMjowNzowNVBNICswODAwLCBKYXNvbiBXYW5nIHdyb3RlOgo+Cj4+IEZv ciB0aGUgY2FzZSBvZiAxTSwgSSB3b3VsZCBsaWtlIHRvIGtub3cgd2hhdCdzIHRoZSB1c2UgY2Fz ZSBmb3IgYSBzaW5nbGUKPj4gcHJvY2VzcyB0byBoYW5kbGUgMU0rIGFkZHJlc3Mgc3BhY2VzPwo+ IEZvciBzb21lIHNjZW5hcmlvcyBldmVyeSBndWVzdCBQQVNJRCB3aWxsIHJlcXVpcmUgYSBJT0FT SUQgSUQgIyBzbwo+IHRoZXJlIGlzIGEgbGFyZ2UgZW5vdWdoIGRlbWFuZCB0aGF0IEZEcyBhbG9u ZSBhcmUgbm90IGEgZ29vZCBmaXQuCj4KPiBGdXJ0aGVyIHRoZXJlIGFyZSBnbG9iYWwgY29udGFp bmVyIHdpZGUgcHJvcGVydGllcyB0aGF0IGFyZSBoYXJkIHRvCj4gY2Fycnkgb3ZlciB0byBhIG11 bHRpLUZEIG1vZGVsLCBsaWtlIHRoZSBhdHRhY2htZW50IG9mIGRldmljZXMgdG8gdGhlCj4gY29u dGFpbmVyIGF0IHRoZSBzdGFydHVwLgoKClNvIGlmIHdlIGltcGxlbWVudCBwZXIgZmQgbW9kZWwu IFRoZSBnbG9iYWwgImNvbnRhaW5lciIgcHJvcGVydGllcyBjb3VsZCAKYmUgZG9uZSB2aWEgdGhl IHBhcmVudCBmZC4gRS5nIGF0dGFjaGluZyB0aGUgcGFyZW50IHRvIHRoZSBkZXZpY2UgYXQgdGhl IApzdGFydHVwLgoKCj4KPj4+IFNvIHRoaXMgUkZDIHRyZWF0cyBmZCBhcyBhIGNvbnRhaW5lciBv ZiBhZGRyZXNzIHNwYWNlcyB3aGljaCBpcyBlYWNoCj4+PiB0YWdnZWQgYnkgYW4gSU9BU0lELgo+ PiBJZiB0aGUgY29udGFpbmVyIGFuZCBhZGRyZXNzIHNwYWNlIGlzIDE6MSB0aGVuIHRoZSBjb250 YWluZXIgc2VlbXMgdXNlbGVzcy4KPiBUaGUgZXhhbXBsZXMgYXQgdGhlIGJvdHRvbSBvZiB0aGUg ZG9jdW1lbnQgc2hvdyBtdWx0aXBsZSBJT0FTSURzIGluCj4gdGhlIGNvbnRhaW5lciBmb3IgYSBw YXJlbnQvY2hpbGQgdHlwZSByZWxhdGlvbnNoaXAKCgpUaGlzIGNhbiBhbHNvIGJlIGRvbmUgcGVy IGZkPyBBIGZkIHBhcmVudCBjYW4gaGF2ZSBtdWx0aXBsZSBmZCBjaGlsZHMuCgpUaGFua3MKCgo+ Cj4gSmFzb24KPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0 dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11