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Wed, 27 Nov 2019 15:32:27 +0000 Received: from EX13D32EUC003.ant.amazon.com (10.43.164.24) by EX13D32EUC004.ant.amazon.com (10.43.164.121) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Wed, 27 Nov 2019 15:32:27 +0000 Received: from EX13D32EUC003.ant.amazon.com ([10.43.164.24]) by EX13D32EUC003.ant.amazon.com ([10.43.164.24]) with mapi id 15.00.1367.000; Wed, 27 Nov 2019 15:32:26 +0000 From: "Durrant, Paul" To: Jan Beulich Thread-Topic: [Xen-devel] [PATCH] x86 / iommu: set up a scratch page in the quarantine domain Thread-Index: AQHVn5tNaK/V9YZGKk+zattii3WhUKebk5SAgAOXSpCAAAPhAIAAAahQ Date: Wed, 27 Nov 2019 15:32:26 +0000 Message-ID: References: <20191120120859.1846-1-pdurrant@amazon.com> <01af44ec07cf464cba555114555ed75f@EX13D32EUC003.ant.amazon.com> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.165.244] MIME-Version: 1.0 Precedence: Bulk Subject: Re: [Xen-devel] [PATCH] x86 / iommu: set up a scratch page in the quarantine domain X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "xen-devel@lists.xenproject.org" , Kevin Tian , =?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= , Wei Liu , Andrew Cooper Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBKYW4gQmV1bGljaCA8amJldWxp Y2hAc3VzZS5jb20+DQo+IFNlbnQ6IDI3IE5vdmVtYmVyIDIwMTkgMTU6MjYNCj4gVG86IER1cnJh bnQsIFBhdWwgPHBkdXJyYW50QGFtYXpvbi5jb20+DQo+IENjOiBLZXZpbiBUaWFuIDxrZXZpbi50 aWFuQGludGVsLmNvbT47IHhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZzsNCj4gQW5kcmV3 IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT47IFJvZ2VyIFBhdSBNb25uw6kNCj4g PHJvZ2VyLnBhdUBjaXRyaXguY29tPjsgV2VpIExpdSA8d2xAeGVuLm9yZz4NCj4gU3ViamVjdDog UmU6IFtYZW4tZGV2ZWxdIFtQQVRDSF0geDg2IC8gaW9tbXU6IHNldCB1cCBhIHNjcmF0Y2ggcGFn ZSBpbiB0aGUNCj4gcXVhcmFudGluZSBkb21haW4NCj4gDQo+IE9uIDI3LjExLjIwMTkgMTY6MTgs ICBEdXJyYW50LCBQYXVsICB3cm90ZToNCj4gPj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0N Cj4gPj4gRnJvbTogVGlhbiwgS2V2aW4gPGtldmluLnRpYW5AaW50ZWwuY29tPg0KPiA+PiBTZW50 OiAyNSBOb3ZlbWJlciAyMDE5IDA4OjIyDQo+ID4+IFRvOiBEdXJyYW50LCBQYXVsIDxwZHVycmFu dEBhbWF6b24uY29tPjsgeGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnDQo+ID4+IENjOiBK YW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+OyBBbmRyZXcgQ29vcGVyDQo+ID4+IDxhbmRy ZXcuY29vcGVyM0BjaXRyaXguY29tPjsgV2VpIExpdSA8d2xAeGVuLm9yZz47IFJvZ2VyIFBhdSBN b25uw6kNCj4gPj4gPHJvZ2VyLnBhdUBjaXRyaXguY29tPg0KPiA+PiBTdWJqZWN0OiBSRTogW1BB VENIXSB4ODYgLyBpb21tdTogc2V0IHVwIGEgc2NyYXRjaCBwYWdlIGluIHRoZQ0KPiBxdWFyYW50 aW5lDQo+ID4+IGRvbWFpbg0KPiA+Pg0KPiA+Pj4gRnJvbTogUGF1bCBEdXJyYW50IFttYWlsdG86 cGR1cnJhbnRAYW1hem9uLmNvbV0NCj4gPj4+IFNlbnQ6IFdlZG5lc2RheSwgTm92ZW1iZXIgMjAs IDIwMTkgODowOSBQTQ0KPiA+Pj4NCj4gPj4+IFRoaXMgcGF0Y2ggaW50cm9kdWNlcyBhIG5ldyBp b21tdV9vcCB0byBmYWNpbGl0YXRlIGEgcGVyLQ0KPiBpbXBsZW1lbnRhdGlvbg0KPiA+Pj4gcXVh cmFudGluZSBzZXQgdXAsIGFuZCB0aGVuIGZ1cnRoZXIgY29kZSBmb3IgeDg2IGltcGxlbWVudGF0 aW9ucw0KPiA+Pj4gKGFtZCBhbmQgdnRkKSB0byBzZXQgdXAgYSByZWFkL3dyb3RlIHNjcmF0Y2gg cGFnZSB0byBzZXJ2ZSBhcyB0aGUNCj4gPj4gc291cmNlLw0KPiA+Pj4gdGFyZ2V0IGZvciBhbGwg RE1BIHdoaWxzdCBhIGRldmljZSBpcyBhc3NpZ25lZCB0byBkb21faW8uDQo+ID4+Pg0KPiA+Pj4g VGhlIHJlYXNvbiBmb3IgZG9pbmcgdGhpcyBpcyB0aGF0IHNvbWUgaGFyZHdhcmUgbWF5IGNvbnRp bnVlIHRvIHJlLXRyeQ0KPiA+Pj4gRE1BLCBkZXNwaXRlIEZMUiwgaW4gdGhlIGV2ZW50IG9mIGFu IGVycm9yLiBIYXZpbmcgYSBzY3JhdGNoIHBhZ2UNCj4gbWFwcGVkDQo+ID4+PiB3aWxsIGFsbG93 IHBlbmRpbmcgRE1BIHRvIGRyYWluIGFuZCB0aHVzIHF1aWVzY2Ugc3VjaCBidWdneSBoYXJkd2Fy ZS4NCj4gPj4NCj4gPj4gdGhlbiB0aGVyZSBpcyBubyBkaWFnbm9zdGljcyBhdCBhbGwgc2luY2Ug YWxsIGZhdWx0cyBhcmUgcXVpZXNjZW50DQo+IG5vdy4uLg0KPiA+PiB3aHkgZG8gd2Ugd2FudCB0 byBzdXBwb3J0IHN1Y2ggYnVnZ3kgaGFyZHdhcmU/IElzIGl0IGJldHRlciB0byBtYWtlDQo+ID4+ IGl0IGFuIGRlZmF1bHQtb2ZmIG9wdGlvbiBzaW5jZSBidWdneSBpcyBzdXBwb3NlZCB0byBuaWNo ZSBjYXNlPw0KPiA+DQo+ID4gSSBndWVzcyBpdCBjb3VsZCBiZSBhIGNvbW1hbmQgbGluZSBvcHRp b24uLi4gcGVyaGFwcyBtYWtpbmcgdGhlIG5ldw0KPiA+ICdpb21tdT1xdWFyYW50aW5lJyBib29s ZWFuIGludG8gc29tZXRoaW5nIG1vcmUgY29tcGxleCwgYnV0IEknbSBub3QNCj4gPiBzdXJlIGl0 J3MgcmVhbGx5IHdvcnRoIGl0LiBQZXJoYXBzIGEgY29tcGlsZSB0aW1lIG9wdGlvbiB3b3VsZCBi ZQ0KPiA+IGJldHRlcj8NCj4gDQo+IFlldCBhbm90aGVyIG9wdGlvbjogSG93IGFib3V0IGluc3Rh bGxpbmcgdGhlIHNjcmF0Y2ggcGFnZSBtYXBwaW5ncw0KPiBvbmx5IGFmdGVyIGEgKGhhbmRmdWwg b2YpIElPTU1VIGZhdWx0cz8gQnV0IG9mIGNvdXJzZSB0aGVyZSB3YXMgdGhlDQo+IHJlbGF0ZWQg ZWFybGllciBxdWVzdGlvbiBvZiB3aGV0aGVyIGluZGVlZCBvdXIgdHVybmluZyBvZmYgb2YgYnVz DQo+IG1hc3RlcmluZyBkb2Vzbid0IGFscmVhZHkgaGVscCBzaWxlbmNpbmcgdGhlIGZhdWx0cy4N Cg0KTm8uIFVuZm9ydHVuYXRlbHkgdGhlIGgvdyBoYXMgemVybyB0b2xlcmFuY2UgZm9yIHNvbWUg ZmF1bHRzLg0KDQogIFBhdWwNCg0KPiANCj4gSmFuDQpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBs aXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4v bGlzdGluZm8veGVuLWRldmVs