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To: "Tian, Kevin" , Nadav Amit CC: chenjiashang , David Woodhouse , "iommu@lists.linux-foundation.org" , LKML , "alex.williamson@redhat.com" , "Gonglei (Arei)" , "will@kernel.org" Subject: =?utf-8?B?UkU6IEEgcHJvYmxlbSBvZiBJbnRlbCBJT01NVSBoYXJkd2FyZSDvvJ8=?= Thread-Topic: =?utf-8?B?QSBwcm9ibGVtIG9mIEludGVsIElPTU1VIGhhcmR3YXJlIO+8nw==?= Thread-Index: AQHXGtwEduPlUZeCNUCbiy3s/+KwAaqHJckAgADDZTCAAA0+AIABZ4Ng//+HOQCAAIduIP//fRsAgACIaxA= Date: Thu, 18 Mar 2021 08:54:09 +0000 Message-ID: References: <670baaf8-4ff8-4e84-4be3-030b95ab5a5e@huawei.com> <6a218e7fe42d41489d02f0b4e3ad2756@huawei.com> <98DB71EF-FF98-4509-85EC-26FF50825A58@gmail.com> <4d1c3bc0418e48b1b9d44799d65ea375@huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.151.207] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogVGlhbiwgS2V2aW4gW21h aWx0bzprZXZpbi50aWFuQGludGVsLmNvbV0NCj4gU2VudDogVGh1cnNkYXksIE1hcmNoIDE4LCAy MDIxIDQ6NDMgUE0NCj4gVG86IExvbmdwZW5nIChNaWtlLCBDbG91ZCBJbmZyYXN0cnVjdHVyZSBT ZXJ2aWNlIFByb2R1Y3QgRGVwdC4pDQo+IDxsb25ncGVuZzJAaHVhd2VpLmNvbT47IE5hZGF2IEFt aXQgPG5hZGF2LmFtaXRAZ21haWwuY29tPg0KPiBDYzogY2hlbmppYXNoYW5nIDxjaGVuamlhc2hh bmdAaHVhd2VpLmNvbT47IERhdmlkIFdvb2Rob3VzZQ0KPiA8ZHdtdzJAaW5mcmFkZWFkLm9yZz47 IGlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnOyBMS01MDQo+IDxsaW51eC1rZXJuZWxA dmdlci5rZXJuZWwub3JnPjsgYWxleC53aWxsaWFtc29uQHJlZGhhdC5jb207IEdvbmdsZWkgKEFy ZWkpDQo+IDxhcmVpLmdvbmdsZWlAaHVhd2VpLmNvbT47IHdpbGxAa2VybmVsLm9yZw0KPiBTdWJq ZWN0OiBSRTogQSBwcm9ibGVtIG9mIEludGVsIElPTU1VIGhhcmR3YXJlIO+8nw0KPiANCj4gPiBG cm9tOiBMb25ncGVuZyAoTWlrZSwgQ2xvdWQgSW5mcmFzdHJ1Y3R1cmUgU2VydmljZSBQcm9kdWN0 IERlcHQuKQ0KPiA+IDxsb25ncGVuZzJAaHVhd2VpLmNvbT4NCj4gPg0KPiA+DQo+ID4gPiAtLS0t LU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiA+ID4gRnJvbTogVGlhbiwgS2V2aW4gW21haWx0bzpr ZXZpbi50aWFuQGludGVsLmNvbV0NCj4gPiA+IFNlbnQ6IFRodXJzZGF5LCBNYXJjaCAxOCwgMjAy MSA0OjI3IFBNDQo+ID4gPiBUbzogTG9uZ3BlbmcgKE1pa2UsIENsb3VkIEluZnJhc3RydWN0dXJl IFNlcnZpY2UgUHJvZHVjdCBEZXB0LikNCj4gPiA+IDxsb25ncGVuZzJAaHVhd2VpLmNvbT47IE5h ZGF2IEFtaXQgPG5hZGF2LmFtaXRAZ21haWwuY29tPg0KPiA+ID4gQ2M6IGNoZW5qaWFzaGFuZyA8 Y2hlbmppYXNoYW5nQGh1YXdlaS5jb20+OyBEYXZpZCBXb29kaG91c2UNCj4gPiA+IDxkd213MkBp bmZyYWRlYWQub3JnPjsgaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmc7IExLTUwNCj4g PiA+IDxsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnPjsgYWxleC53aWxsaWFtc29uQHJlZGhh dC5jb207IEdvbmdsZWkNCj4gPiAoQXJlaSkNCj4gPiA+IDxhcmVpLmdvbmdsZWlAaHVhd2VpLmNv bT47IHdpbGxAa2VybmVsLm9yZw0KPiA+ID4gU3ViamVjdDogUkU6IEEgcHJvYmxlbSBvZiBJbnRl bCBJT01NVSBoYXJkd2FyZSDvvJ8NCj4gPiA+DQo+ID4gPiA+IEZyb206IGlvbW11IDxpb21tdS1i b3VuY2VzQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnPiBPbiBCZWhhbGYNCj4gPiA+ID4gT2Yg TG9uZ3BlbmcgKE1pa2UsIENsb3VkIEluZnJhc3RydWN0dXJlIFNlcnZpY2UgUHJvZHVjdCBEZXB0 LikNCj4gPiA+ID4NCj4gPiA+ID4gPiAyLiBDb25zaWRlciBlbnN1cmluZyB0aGF0IHRoZSBwcm9i bGVtIGlzIG5vdCBzb21laG93IHJlbGF0ZWQgdG8NCj4gPiA+ID4gPiBxdWV1ZWQgaW52YWxpZGF0 aW9ucy4gVHJ5IHRvIHVzZSBfX2lvbW11X2ZsdXNoX2lvdGxiKCkgaW5zdGVhZA0KPiA+ID4gPiA+ IG9mDQo+ID4gPiBxaV9mbHVzaF9pb3RsYigpLg0KPiA+ID4gPiA+DQo+ID4gPiA+DQo+ID4gPiA+ IEkgdHJpZWQgdG8gZm9yY2UgdG8gdXNlIF9faW9tbXVfZmx1c2hfaW90bGIoKSwgYnV0IG1heWJl IHNvbWV0aGluZw0KPiA+ID4gPiB3cm9uZywgdGhlIHN5c3RlbSBjcmFzaGVkLCBzbyBJIHByZWZl ciB0byBsb3dlciB0aGUgcHJpb3JpdHkgb2YNCj4gPiA+ID4gdGhpcw0KPiA+IG9wZXJhdGlvbi4N Cj4gPiA+ID4NCj4gPiA+DQo+ID4gPiBUaGUgVlQtZCBzcGVjIGNsZWFybHkgc2F5cyB0aGF0IHJl Z2lzdGVyLWJhc2VkIGludmFsaWRhdGlvbiBjYW4gYmUNCj4gPiA+IHVzZWQgb25seQ0KPiA+IHdo ZW4NCj4gPiA+IHF1ZXVlZC1pbnZhbGlkYXRpb25zIGFyZSBub3QgZW5hYmxlZC4gSW50ZWwtSU9N TVUgZHJpdmVyIGRvZXNuJ3QNCj4gPiA+IHByb3ZpZGUNCj4gPiBhbg0KPiA+ID4gb3B0aW9uIHRv IGRpc2FibGUgcXVldWVkLWludmFsaWRhdGlvbiB0aG91Z2gsIHdoZW4gdGhlIGhhcmR3YXJlIGlz DQo+ID4gY2FwYWJsZS4gSWYgeW91DQo+ID4gPiByZWFsbHkgd2FudCB0byB0cnksIHR3ZWFrIHRo ZSBjb2RlIGluIGludGVsX2lvbW11X2luaXRfcWkuDQo+ID4gPg0KPiA+DQo+ID4gSGkgS2V2aW4s DQo+ID4NCj4gPiBUaGFua3MgdG8gcG9pbnQgb3V0IHRoaXMuIERvIHlvdSBoYXZlIGFueSBpZGVh cyBhYm91dCB0aGlzIHByb2JsZW0gPyBJDQo+ID4gdHJpZWQgdG8gZGVzY3JpcHQgdGhlIHByb2Js ZW0gbXVjaCBjbGVhciBpbiBteSByZXBseSB0byBBbGV4LCBob3BlIHlvdQ0KPiA+IGNvdWxkIGhh dmUgYSBsb29rIGlmIHlvdSdyZSBpbnRlcmVzdGVkLg0KPiA+DQo+IA0KPiBJIGFncmVlIHdpdGgg TmFkYXYuIExvb2tzIHRoaXMgaW1wbGllcyBzb21lIHN0YWxlIHBhZ2luZyBzdHJ1Y3R1cmUgY2Fj aGUgZW50cnkgKGUuZy4NCj4gUE1EKSBpcyBub3QgaW52YWxpZGF0ZWQgcHJvcGVybHkuIEl0J3Mg YmV0dGVyIGlmIEJhb2x1IGNhbiByZXByb2R1Y2UgdGhpcyBwcm9ibGVtIGluDQo+IGhpcyBsb2Nh bCBlbnZpcm9ubWVudCBhbmQgdGhlbiBkbyBtb3JlIGRlYnVnIHRvIGlkZW50aWZ5IHdoZXRoZXIg aXQncyBhIHNvZnR3YXJlIG9yDQo+IGhhcmR3YXJlIGRlZmVjdC4NCj4gDQo+IGJ0dyB3aGF0IGlz IHRoZSBkZXZpY2UgdW5kZXIgdGVzdD8gRG9lcyBpdCBzdXBwb3J0IEFUUz8NCj4gDQoNClRoZSBk ZXZpY2UgaXMgb3VyIG9mZmxvYWQgY2FyZCwgaXQgZG9lcyBub3Qgc3VwcG9ydCBBVFMgY2FwLg0K DQo+IFRoYW5rcw0KPiBLZXZpbg0K