From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Durrant Subject: Re: [PATCH v2] x86/hvm: fix interaction between internal and external emulation Date: Tue, 5 Dec 2017 14:11:15 +0000 Message-ID: <605b9785fc834c159b83fd4a09cb55c7@AMSPEX02CL03.citrite.net> References: <20171128140519.4305-1-paul.durrant@citrix.com> <5A26B2B10200007800194BB0@prv-mh.provo.novell.com> <486e6f7bf43e4c029b357bcba204797a@AMSPEX02CL03.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eMDx6-0002Zf-Nd for xen-devel@lists.xenproject.org; Tue, 05 Dec 2017 14:12:04 +0000 In-Reply-To: <486e6f7bf43e4c029b357bcba204797a@AMSPEX02CL03.citrite.net> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Paul Durrant , 'Jan Beulich' Cc: "xen-devel@lists.xenproject.org" List-Id: xen-devel@lists.xenproject.org PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBYZW4tZGV2ZWwgW21haWx0bzp4 ZW4tZGV2ZWwtYm91bmNlc0BsaXN0cy54ZW5wcm9qZWN0Lm9yZ10gT24gQmVoYWxmDQo+IE9mIFBh dWwgRHVycmFudA0KPiBTZW50OiAwNSBEZWNlbWJlciAyMDE3IDE0OjAwDQo+IFRvOiAnSmFuIEJl dWxpY2gnIDxKQmV1bGljaEBzdXNlLmNvbT4NCj4gQ2M6IHhlbi1kZXZlbEBsaXN0cy54ZW5wcm9q ZWN0Lm9yZw0KPiBTdWJqZWN0OiBSZTogW1hlbi1kZXZlbF0gW1BBVENIIHYyXSB4ODYvaHZtOiBm aXggaW50ZXJhY3Rpb24gYmV0d2Vlbg0KPiBpbnRlcm5hbCBhbmQgZXh0ZXJuYWwgZW11bGF0aW9u DQo+IA0KPiA+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+ID4gRnJvbTogSmFuIEJldWxp Y2ggW21haWx0bzpKQmV1bGljaEBzdXNlLmNvbV0NCj4gPiBTZW50OiAwNSBEZWNlbWJlciAyMDE3 IDEzOjUzDQo+ID4gVG86IFBhdWwgRHVycmFudCA8UGF1bC5EdXJyYW50QGNpdHJpeC5jb20+DQo+ ID4gQ2M6IHhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZw0KPiA+IFN1YmplY3Q6IFJlOiBb UEFUQ0ggdjJdIHg4Ni9odm06IGZpeCBpbnRlcmFjdGlvbiBiZXR3ZWVuIGludGVybmFsIGFuZA0K PiA+IGV4dGVybmFsIGVtdWxhdGlvbg0KPiA+DQo+ID4gPj4+IE9uIDI4LjExLjE3IGF0IDE1OjA1 LCA8cGF1bC5kdXJyYW50QGNpdHJpeC5jb20+IHdyb3RlOg0KPiA+ID4gLS0tIGEveGVuL2FyY2gv eDg2L2h2bS9pby5jDQo+ID4gPiArKysgYi94ZW4vYXJjaC94ODYvaHZtL2lvLmMNCj4gPiA+IEBA IC04OCw3ICs4OCw3IEBAIGJvb2wNCj4gPiBodm1fZW11bGF0ZV9vbmVfaW5zbihodm1fZW11bGF0 ZV92YWxpZGF0ZV90ICp2YWxpZGF0ZSwgY29uc3QgY2hhcg0KPiA+ICpkZXNjcikNCj4gPiA+DQo+ ID4gPiAgICAgIHJjID0gaHZtX2VtdWxhdGVfb25lKCZjdHh0KTsNCj4gPiA+DQo+ID4gPiAtICAg IGlmICggaHZtX3ZjcHVfaW9fbmVlZF9jb21wbGV0aW9uKHZpbykgfHwgdmlvLT5tbWlvX3JldHJ5 ICkNCj4gPiA+ICsgICAgaWYgKCBodm1fdmNwdV9pb19uZWVkX2NvbXBsZXRpb24odmlvKSApDQo+ ID4gPiAgICAgICAgICB2aW8tPmlvX2NvbXBsZXRpb24gPSBIVk1JT19tbWlvX2NvbXBsZXRpb247 DQo+ID4gPiAgICAgIGVsc2UNCj4gPiA+ICAgICAgICAgIHZpby0+bW1pb19hY2Nlc3MgPSAoc3Ry dWN0IG5wZmVjKXt9Ow0KPiA+DQo+ID4gV2hpbGUgSSBjYW4ndCAoeWV0KSBzYXkgd2h5IHdpdGhv dXQgdGhpcyBjaGFuZ2UgdGhpbmdzIHdvdWxkIGhhdmUNCj4gPiBiZWhhdmVkIGJldHRlciBvbiB0 aGF0IG9sZCBBTUQgYm94IHdoaWNoIGlzIGNhdXNpbmcgdGhlIG9zc3Rlc3QNCj4gPiBmYWlsdXJl LCBJIHRoaW5rIEFuZHJldydzIHN1Z2dlc3Rpb24gdGhhdCB3ZSBtaWdodCBiZSB0cnlpbmcgdG8N Cj4gPiBlbXVsYXRlIGZyb20gYSBzdGFsZSBpbnN0cnVjdGlvbiBjYWNoZSBpcyBzcG90IG9uOiBE b2Vzbid0DQo+IA0KPiBZZXMsIEkgY2FuJ3Qgc2VlIGhvdyB0aGUgYWJvdmUgd2FzIGV2ZXIgY29y cmVjdC4NCg0KSSB0aGluayBJIHNlZSB3aHkgdGhpcyB3b3JrZWQgYmVmb3JlLi4uDQoNClNldHRp bmcgdXAgdGhlIGlvX2NvbXBsZXRpb24gdmFsdWUgbWVhbnQgdGhhdCB3aGVuIGh2bV9kb19yZXN1 bWUoKSBjYWxsZWQgaGFuZGxlX2h2bV9pb19jb21wbGV0aW9uKCkgdGhlcmUgd2FzIGFwcGFyZW50 bHkgYW4gbW1pbyBvdXRzdGFuZGluZyBhbmQgdGh1cyBoYW5kbGVfbW1pbygpIHdhcyBjYWxsZWQu IEF0IHNvbWUgcG9pbnQgaGFuZGxlX21taW8oKSBoYXMgYmVjb21lIGEgc3RhdGljIGlubGluZSB0 aGF0IGNhbGxzIGh2bV9lbXVsYXRlX29uZV9pbnNuKCkgYW5kIHRoYXQgdG9vayBjYXJlIG9mIHRo ZSByZW1haW5pbmcgcmVwcy4NCg0KICBQYXVsDQoNCj4gDQo+ID4NCj4gPiAgICAgcmMgPSB4ODZf ZW11bGF0ZSgmaHZtZW11bF9jdHh0LT5jdHh0LCBvcHMpOw0KPiA+DQo+ID4gICAgIGlmICggcmMg PT0gWDg2RU1VTF9PS0FZICYmIHZpby0+bW1pb19yZXRyeSApDQo+ID4gICAgICAgICByYyA9IFg4 NkVNVUxfUkVUUlk7DQo+ID4gICAgIGlmICggcmMgIT0gWDg2RU1VTF9SRVRSWSApDQo+ID4gICAg IHsNCj4gPiAgICAgICAgIHZpby0+bW1pb19jYWNoZV9jb3VudCA9IDA7DQo+ID4gICAgICAgICB2 aW8tPm1taW9faW5zbl9ieXRlcyA9IDA7DQo+ID4gICAgIH0NCj4gPiAgICAgZWxzZQ0KPiA+ICAg ICAgICAgLi4uDQo+ID4NCj4gPiBpbiBfaHZtX2VtdWxhdGVfb25lKCkgbmVlZCByZS1vcmRlcmlu ZyBvZiB0aGUgdHdvIGNvbmRpdGlvbmFscz8NCj4gPiAtPm1taW9fcmV0cnkgc2V0LCBhcyBkZXNj cmliZWQgZWFybGllciwgbWVhbnMgd2UncmUgZXhpdGluZyBiYWNrIHRvDQo+ID4gdGhlIGd1ZXN0 LiBBdCB0aGF0IHBvaW50IHRoZSBndWVzdCBjYW4gdGFrZSBpbnRlcnJ1cHRzIGFuZCBhbGlrZSwN Cj4gPiB3aGljaCBtZWFucyB0aGF0IGlmIHdlJ3JlIGJlaW5nIHJlLWVudGVyZWQgd2UncmUgbm90 IG5lY2Vzc2FyaWx5DQo+ID4gZ29pbmcgdG8gY29udGludWUgZW11bGF0aW9uIG9mIHRoZSBzYW1l IHByZXZpb3VzIGluc3RydWN0aW9uLiBJLmUuDQo+ID4NCj4gPiAgICAgcmMgPSB4ODZfZW11bGF0 ZSgmaHZtZW11bF9jdHh0LT5jdHh0LCBvcHMpOw0KPiA+DQo+ID4gICAgIGlmICggcmMgIT0gWDg2 RU1VTF9SRVRSWSApDQo+ID4gICAgIHsNCj4gPiAgICAgICAgIHZpby0+bW1pb19jYWNoZV9jb3Vu dCA9IDA7DQo+ID4gICAgICAgICB2aW8tPm1taW9faW5zbl9ieXRlcyA9IDA7DQo+ID4gICAgIH0N Cj4gPiAgICAgZWxzZQ0KPiA+ICAgICB7DQo+ID4gICAgICAgICAuLi4NCj4gPiAgICAgfQ0KPiA+ ICAgICBpZiAoIHJjID09IFg4NkVNVUxfT0tBWSAmJiB2aW8tPm1taW9fcmV0cnkgKQ0KPiA+ICAg ICAgICAgcmMgPSBYODZFTVVMX1JFVFJZOw0KPiA+DQo+IA0KPiBCdXQgdGhhdCdzIG5vdCBzYWZl IGlzIGl0PyBJZiB3ZSd2ZSBvbmx5IGNvbXBsZXRlZCBzb21lIG9mIHRoZSByZXBzIG9mIGFuDQo+ IGluc3RydWN0aW9uIHRoZW4gd2UgY2FuJ3QgZmx1c2ggdGhlIGluc3RydWN0aW9uIGNhY2hlIGFu ZCB3ZSBjYW4ndCBhbGxvdyB0aGUNCj4gZ3Vlc3QgdG8gdGFrZSBpbnRlcnJ1cHRzLCBjYW4gd2U/ DQo+IA0KPiAgIFBhdWwNCj4gDQo+ID4gKG9yIHRoZSBlcXVpdmFsZW50IHRoZXJlb2Ygd2l0aCBz d2l0Y2goKSBhbmQgZmFsbC10aHJvdWdoIGZyb20NCj4gPiBPS0FZIHRvIGRlZmF1bHQpLiBBbnkg Im1vcmUgY2xldmVyIiBzb2x1dGlvbiAobGlrZSBkZWZlcnJpbmcgdGhlDQo+ID4gY2FjaGUgaW52 YWxpZGF0aW9uIHVudGlsIHdlJ3JlIGJlaW5nIHJlLWVudGVyZWQsIG1ha2luZyBpdA0KPiA+IGRl cGVuZGVudCBvbiBDUzpSSVAgaGF2aW5nIGNoYW5nZWQpIGZlZWxzIGZyYWdpbGUuDQo+ID4NCj4g PiBKYW4NCj4gDQo+IA0KPiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXw0KPiBYZW4tZGV2ZWwgbWFpbGluZyBsaXN0DQo+IFhlbi1kZXZlbEBsaXN0cy54ZW5w cm9qZWN0Lm9yZw0KPiBodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGlu Zm8veGVuLWRldmVsDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9y ZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs