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Tsirkin" , Jason Wang , Konrad Rzeszutek Wilk , Christoph Hellwig CC: Jens Axboe , "virtualization@lists.linux-foundation.org" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "jfehlig@suse.com" , "Grimm, Jon" , "Singh, Brijesh" , "jroedel@suse.de" Subject: Re: [PATCH 4/5] virtio: Introduce virtio_max_dma_size() Thread-Topic: [PATCH 4/5] virtio: Introduce virtio_max_dma_size() Thread-Index: AQHUt677Jk4fk5o5Fke87yAomV3Fp6XH7H0A Date: Wed, 30 Jan 2019 15:10:29 +0000 Message-ID: References: <20190129084342.26030-1-joro@8bytes.org> <20190129084342.26030-5-joro@8bytes.org> In-Reply-To: <20190129084342.26030-5-joro@8bytes.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SN4PR0501CA0064.namprd05.prod.outlook.com (2603:10b6:803:41::41) To MN2PR12MB3631.namprd12.prod.outlook.com (2603:10b6:208:cc::19) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Thomas.Lendacky@amd.com; 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charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190129084342.26030-5-joro@8bytes.org> Content-Language: en-US Content-ID: Sender: linux-kernel-owner@vger.kernel.org To: Joerg Roedel , "Michael S . Tsirkin" , Jason Wang , Konrad Rzeszutek Wilk , Christoph Hellwig Cc: Jens Axboe , "virtualization@lists.linux-foundation.org" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "jfehlig@suse.com" , "Grimm, Jon" , "Singh, Brijesh" , "jroedel@suse.de" List-Id: iommu@lists.linux-foundation.org T24gMS8yOS8xOSAyOjQzIEFNLCBKb2VyZyBSb2VkZWwgd3JvdGU6DQo+IEZyb206IEpvZXJnIFJv ZWRlbCA8anJvZWRlbEBzdXNlLmRlPg0KPiANCj4gVGhpcyBmdW5jdGlvbiByZXR1cm5zIHRoZSBt YXhpbXVtIHNlZ21lbnQgc2l6ZSBmb3IgYSBzaW5nbGUNCj4gZG1hIHRyYW5zYWN0aW9uIG9mIGEg dmlydGlvIGRldmljZS4gVGhlIHBvc3NpYmxlIGxpbWl0IGNvbWVzDQo+IGZyb20gdGhlIFNXSU9U TEIgaW1wbGVtZW50YXRpb24gaW4gdGhlIExpbnV4IGtlcm5lbCwgdGhhdA0KPiBoYXMgYW4gdXBw ZXIgbGltaXQgb2YgKGN1cnJlbnRseSkgMjU2a2Igb2YgY29udGlndW91cw0KPiBtZW1vcnkgaXQg Y2FuIG1hcC4gT3RoZXIgRE1BLUFQSSBpbXBsZW1lbnRhdGlvbnMgbWlnaHQgYWxzbw0KPiBoYXZl IGxpbWl0cy4NCj4gDQo+IFVzZSB0aGUgbmV3IGRtYV9tYXhfbWFwcGluZ19zaXplKCkgZnVuY3Rp b24gdG8gZGV0ZXJtaW5lIHRoZQ0KPiBtYXhpbXVtIG1hcHBpbmcgc2l6ZSB3aGVuIERNQS1BUEkg aXMgaW4gdXNlIGZvciB2aXJ0aW8uDQo+IA0KPiBSZXZpZXdlZC1ieTogS29ucmFkIFJ6ZXN6dXRl ayBXaWxrIDxrb25yYWQud2lsa0BvcmFjbGUuY29tPg0KPiBTaWduZWQtb2ZmLWJ5OiBKb2VyZyBS b2VkZWwgPGpyb2VkZWxAc3VzZS5kZT4NCj4gLS0tDQo+ICBkcml2ZXJzL3ZpcnRpby92aXJ0aW9f cmluZy5jIHwgMTAgKysrKysrKysrKw0KPiAgaW5jbHVkZS9saW51eC92aXJ0aW8uaCAgICAgICB8 ICAyICsrDQo+ICAyIGZpbGVzIGNoYW5nZWQsIDEyIGluc2VydGlvbnMoKykNCj4gDQo+IGRpZmYg LS1naXQgYS9kcml2ZXJzL3ZpcnRpby92aXJ0aW9fcmluZy5jIGIvZHJpdmVycy92aXJ0aW8vdmly dGlvX3JpbmcuYw0KPiBpbmRleCBjZDdlNzU1NDg0ZTMuLjljYTNmZTZhZjlmYSAxMDA2NDQNCj4g LS0tIGEvZHJpdmVycy92aXJ0aW8vdmlydGlvX3JpbmcuYw0KPiArKysgYi9kcml2ZXJzL3ZpcnRp by92aXJ0aW9fcmluZy5jDQo+IEBAIC0yNjYsNiArMjY2LDE2IEBAIHN0YXRpYyBib29sIHZyaW5n X3VzZV9kbWFfYXBpKHN0cnVjdCB2aXJ0aW9fZGV2aWNlICp2ZGV2KQ0KPiAgCXJldHVybiBmYWxz ZTsNCj4gIH0NCj4gIA0KPiArc2l6ZV90IHZpcnRpb19tYXhfZG1hX3NpemUoc3RydWN0IHZpcnRp b19kZXZpY2UgKnZkZXYpDQo+ICt7DQo+ICsJc2l6ZV90IG1heF9zZWdtZW50X3NpemUgPSBTSVpF X01BWDsNCj4gKw0KPiArCWlmICh2cmluZ191c2VfZG1hX2FwaSh2ZGV2KSkNCj4gKwkJbWF4X3Nl Z21lbnRfc2l6ZSA9IGRtYV9tYXhfbWFwcGluZ19zaXplKCZ2ZGV2LT5kZXYpOw0KPiArDQo+ICsJ cmV0dXJuIG1heF9zZWdtZW50X3NpemU7DQo+ICt9DQoNCldoZW4gSSBidWlsZCB3aXRoIHRoZXNl IHBhdGNoZXMgYW5kIHdpdGggdGhlIHZpcnRpbyBkZXZpY2VzIGFzIG1vZHVsZXMgSQ0KZ2V0IGEg YnVpbGQgZmFpbHVyZS4gTG9va3MgbGlrZSB0aGlzIG5lZWRzIGFuIEVYUE9SVF9TWU1CT0xfR1BM KCkuDQoNClRoYW5rcywNClRvbQ0KDQo+ICsNCj4gIHN0YXRpYyB2b2lkICp2cmluZ19hbGxvY19x dWV1ZShzdHJ1Y3QgdmlydGlvX2RldmljZSAqdmRldiwgc2l6ZV90IHNpemUsDQo+ICAJCQkgICAg ICBkbWFfYWRkcl90ICpkbWFfaGFuZGxlLCBnZnBfdCBmbGFnKQ0KPiAgew0KPiBkaWZmIC0tZ2l0 IGEvaW5jbHVkZS9saW51eC92aXJ0aW8uaCBiL2luY2x1ZGUvbGludXgvdmlydGlvLmgNCj4gaW5k ZXggZmExYjVkYTI4MDRlLi42NzNmZTNlZjM2MDcgMTAwNjQ0DQo+IC0tLSBhL2luY2x1ZGUvbGlu dXgvdmlydGlvLmgNCj4gKysrIGIvaW5jbHVkZS9saW51eC92aXJ0aW8uaA0KPiBAQCAtMTU3LDYg KzE1Nyw4IEBAIGludCB2aXJ0aW9fZGV2aWNlX2ZyZWV6ZShzdHJ1Y3QgdmlydGlvX2RldmljZSAq ZGV2KTsNCj4gIGludCB2aXJ0aW9fZGV2aWNlX3Jlc3RvcmUoc3RydWN0IHZpcnRpb19kZXZpY2Ug KmRldik7DQo+ICAjZW5kaWYNCj4gIA0KPiArc2l6ZV90IHZpcnRpb19tYXhfZG1hX3NpemUoc3Ry dWN0IHZpcnRpb19kZXZpY2UgKnZkZXYpOw0KPiArDQo+ICAjZGVmaW5lIHZpcnRpb19kZXZpY2Vf Zm9yX2VhY2hfdnEodmRldiwgdnEpIFwNCj4gIAlsaXN0X2Zvcl9lYWNoX2VudHJ5KHZxLCAmdmRl di0+dnFzLCBsaXN0KQ0KPiAgDQo+IA0K