From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wu, Feng" Subject: RE: [PATCH] KVM: VMX: check apicv is active before using VT-d posted interrupt Date: Fri, 20 May 2016 08:22:40 +0000 Message-ID: References: <7fec7586-a7c6-59dd-7653-2f88de75fbe4@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "kvm@vger.kernel.org" , "Wu, Feng" To: Yang Zhang , Paolo Bonzini , "rkrcmar@redhat.com" Return-path: Received: from mga03.intel.com ([134.134.136.65]:4356 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932808AbcETIWm (ORCPT ); Fri, 20 May 2016 04:22:42 -0400 In-Reply-To: <7fec7586-a7c6-59dd-7653-2f88de75fbe4@gmail.com> Content-Language: en-US Sender: kvm-owner@vger.kernel.org List-ID: DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogWWFuZyBaaGFuZyBbbWFp bHRvOnlhbmcuemhhbmcud3pAZ21haWwuY29tXQ0KPiBTZW50OiBGcmlkYXksIE1heSAyMCwgMjAx NiAzOjUxIFBNDQo+IFRvOiBQYW9sbyBCb256aW5pIDxwYm9uemluaUByZWRoYXQuY29tPjsgcmty Y21hckByZWRoYXQuY29tOyBXdSwgRmVuZw0KPiA8ZmVuZy53dUBpbnRlbC5jb20+DQo+IENjOiBr dm1Admdlci5rZXJuZWwub3JnDQo+IFN1YmplY3Q6IFtQQVRDSF0gS1ZNOiBWTVg6IGNoZWNrIGFw aWN2IGlzIGFjdGl2ZSBiZWZvcmUgdXNpbmcgVlQtZCBwb3N0ZWQNCj4gaW50ZXJydXB0DQo+IA0K PiBWVC1kIHBvc3RlZCBpbnRlcnJ1cHQgaXMgcmVseWluZyBvbiB0aGUgQ1BVIHNpZGUncyBwb3N0 ZWQgaW50ZXJydXB0Lg0KPiBOZWVkIHRvIGNoZWNrIHdoZXRoZXIgVkNQVSdzIEFQSUN2IGlzIGFj dGl2ZSBiZWZvcmUgZW5hYmluZyBWVC1kIHBvc3RlZA0KPiBpbnRlcnJ1cHQuDQoNClllcywgdGhl IGV4dHJhIGNoZWNrIGlzIGdvb2QuIEp1c3QgY3VyaW91cywgRG8geW91IHNlZSBzb21lIGhhcmR3 YXJlIHdpdGgNClZULWQgUEkgYnV0IG5vIENQVSBzaWRlIFBJLiBJIHJlbWVtYmVyIEkgd2FzIHRv bGQgdGhpcyBjYW5ub3QgaGFwcGVuIGluDQpyZWFsIHdvcmxkLg0KDQpUaGFua3MsDQpmZW5nDQoN Cj4gDQo+IFNpZ25lZC1vZmYtYnk6IFlhbmcgWmhhbmcgPHlhbmcuemhhbmcud3pAZ21haWwuY29t Pg0KPiBTaWduZWQtb2ZmLWJ5OiBTaGVuZ2dlIERpbmcgPHNoZW5nZ2UuZHNnQGFsaWJhYmEtaW5j LmNvbT4NCj4gLS0tDQo+ICAgYXJjaC94ODYva3ZtL3ZteC5jIHwgMTUgKysrKysrKysrKy0tLS0t DQo+ICAgMSBmaWxlIGNoYW5nZWQsIDEwIGluc2VydGlvbnMoKyksIDUgZGVsZXRpb25zKC0pDQo+ IA0KPiBkaWZmIC0tZ2l0IGEvYXJjaC94ODYva3ZtL3ZteC5jIGIvYXJjaC94ODYva3ZtL3ZteC5j DQo+IGluZGV4IDdlYmYyN2IuLjhiYTg3ZjMgMTAwNjQ0DQo+IC0tLSBhL2FyY2gveDg2L2t2bS92 bXguYw0KPiArKysgYi9hcmNoL3g4Ni9rdm0vdm14LmMNCj4gQEAgLTIwNzIsNyArMjA3Miw4IEBA IHN0YXRpYyB2b2lkIHZteF92Y3B1X3BpX2xvYWQoc3RydWN0IGt2bV92Y3B1DQo+ICp2Y3B1LCBp bnQgY3B1KQ0KPiAgIAl1bnNpZ25lZCBpbnQgZGVzdDsNCj4gDQo+ICAgCWlmICgha3ZtX2FyY2hf aGFzX2Fzc2lnbmVkX2RldmljZSh2Y3B1LT5rdm0pIHx8DQo+IC0JCSFpcnFfcmVtYXBwaW5nX2Nh cChJUlFfUE9TVElOR19DQVApKQ0KPiArCQkhaXJxX3JlbWFwcGluZ19jYXAoSVJRX1BPU1RJTkdf Q0FQKSAgfHwNCj4gKwkJIWt2bV92Y3B1X2FwaWN2X2FjdGl2ZSh2Y3B1KSkNCj4gICAJCXJldHVy bjsNCj4gDQo+ICAgCWRvIHsNCj4gQEAgLTIxODAsNyArMjE4MSw4IEBAIHN0YXRpYyB2b2lkIHZt eF92Y3B1X3BpX3B1dChzdHJ1Y3Qga3ZtX3ZjcHUgKnZjcHUpDQo+ICAgCXN0cnVjdCBwaV9kZXNj ICpwaV9kZXNjID0gdmNwdV90b19waV9kZXNjKHZjcHUpOw0KPiANCj4gICAJaWYgKCFrdm1fYXJj aF9oYXNfYXNzaWduZWRfZGV2aWNlKHZjcHUtPmt2bSkgfHwNCj4gLQkJIWlycV9yZW1hcHBpbmdf Y2FwKElSUV9QT1NUSU5HX0NBUCkpDQo+ICsJCSFpcnFfcmVtYXBwaW5nX2NhcChJUlFfUE9TVElO R19DQVApICB8fA0KPiArCQkha3ZtX3ZjcHVfYXBpY3ZfYWN0aXZlKHZjcHUpKQ0KPiAgIAkJcmV0 dXJuOw0KPiANCj4gICAJLyogU2V0IFNOIHdoZW4gdGhlIHZDUFUgaXMgcHJlZW1wdGVkICovDQo+ IEBAIC0xMDY5OCw3ICsxMDcwMCw4IEBAIHN0YXRpYyBpbnQgdm14X3ByZV9ibG9jayhzdHJ1Y3Qg a3ZtX3ZjcHUgKnZjcHUpDQo+ICAgCXN0cnVjdCBwaV9kZXNjICpwaV9kZXNjID0gdmNwdV90b19w aV9kZXNjKHZjcHUpOw0KPiANCj4gICAJaWYgKCFrdm1fYXJjaF9oYXNfYXNzaWduZWRfZGV2aWNl KHZjcHUtPmt2bSkgfHwNCj4gLQkJIWlycV9yZW1hcHBpbmdfY2FwKElSUV9QT1NUSU5HX0NBUCkp DQo+ICsJCSFpcnFfcmVtYXBwaW5nX2NhcChJUlFfUE9TVElOR19DQVApICB8fA0KPiArCQkha3Zt X3ZjcHVfYXBpY3ZfYWN0aXZlKHZjcHUpKQ0KPiAgIAkJcmV0dXJuIDA7DQo+IA0KPiAgIAl2Y3B1 LT5wcmVfcGNwdSA9IHZjcHUtPmNwdTsNCj4gQEAgLTEwNzY0LDcgKzEwNzY3LDggQEAgc3RhdGlj IHZvaWQgdm14X3Bvc3RfYmxvY2soc3RydWN0IGt2bV92Y3B1ICp2Y3B1KQ0KPiAgIAl1bnNpZ25l ZCBsb25nIGZsYWdzOw0KPiANCj4gICAJaWYgKCFrdm1fYXJjaF9oYXNfYXNzaWduZWRfZGV2aWNl KHZjcHUtPmt2bSkgfHwNCj4gLQkJIWlycV9yZW1hcHBpbmdfY2FwKElSUV9QT1NUSU5HX0NBUCkp DQo+ICsJCSFpcnFfcmVtYXBwaW5nX2NhcChJUlFfUE9TVElOR19DQVApICB8fA0KPiArCQkha3Zt X3ZjcHVfYXBpY3ZfYWN0aXZlKHZjcHUpKQ0KPiAgIAkJcmV0dXJuOw0KPiANCj4gICAJZG8gew0K PiBAQCAtMTA4MTcsNyArMTA4MjEsOCBAQCBzdGF0aWMgaW50IHZteF91cGRhdGVfcGlfaXJ0ZShz dHJ1Y3Qga3ZtICprdm0sDQo+IHVuc2lnbmVkIGludCBob3N0X2lycSwNCj4gICAJaW50IGlkeCwg cmV0ID0gLUVJTlZBTDsNCj4gDQo+ICAgCWlmICgha3ZtX2FyY2hfaGFzX2Fzc2lnbmVkX2Rldmlj ZShrdm0pIHx8DQo+IC0JCSFpcnFfcmVtYXBwaW5nX2NhcChJUlFfUE9TVElOR19DQVApKQ0KPiAr CQkhaXJxX3JlbWFwcGluZ19jYXAoSVJRX1BPU1RJTkdfQ0FQKSB8fA0KPiArCQkha3ZtX3ZjcHVf YXBpY3ZfYWN0aXZlKGt2bS0+dmNwdXNbMF0pKQ0KPiAgIAkJcmV0dXJuIDA7DQo+IA0KPiAgIAlp ZHggPSBzcmN1X3JlYWRfbG9jaygma3ZtLT5pcnFfc3JjdSk7DQo+IC0tDQo+IDEuOC4yLjENCg==