From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Vitaly Kuznetsov , =?utf-8?B?UmFkaW0gS3LEjW3DocWZ?= , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 094/161] x86/kvm/vmx: do not use vm-exit instruction length for fast MMIO when running nested Date: Mon, 9 Apr 2018 00:21:05 +0000 Message-ID: <20180409001936.162706-94-alexander.levin@microsoft.com> References: <20180409001936.162706-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001936.162706-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: RnJvbTogVml0YWx5IEt1em5ldHNvdiA8dmt1em5ldHNAcmVkaGF0LmNvbT4NCg0KWyBVcHN0cmVh bSBjb21taXQgZDM5MWYxMjA3MDY3MjY4MjYxYWRkMDQ4NWYwZjM0NTAzNTM5YzViMCBdDQoNCkkg d2FzIGludmVzdGlnYXRpbmcgYW4gaXNzdWUgd2l0aCBzZWFiaW9zID49IDEuMTAgd2hpY2ggc3Rv cHBlZCB3b3JraW5nDQpmb3IgbmVzdGVkIEtWTSBvbiBIeXBlci1WLiBUaGUgcHJvYmxlbSBhcHBl YXJzIHRvIGJlIGluDQpoYW5kbGVfZXB0X3Zpb2xhdGlvbigpIGZ1bmN0aW9uOiB3aGVuIHdlIGRv IGZhc3QgbW1pbyB3ZSBuZWVkIHRvIHNraXANCnRoZSBpbnN0cnVjdGlvbiBzbyB3ZSBkbyBrdm1f c2tpcF9lbXVsYXRlZF9pbnN0cnVjdGlvbigpLiBUaGlzLCBob3dldmVyLA0KZGVwZW5kcyBvbiBW TV9FWElUX0lOU1RSVUNUSU9OX0xFTiBmaWVsZCBiZWluZyBzZXQgY29ycmVjdGx5IGluIFZNQ1Mu DQpIb3dldmVyLCB0aGlzIGlzIG5vdCB0aGUgY2FzZS4NCg0KSW50ZWwncyBtYW51YWwgZG9lc24n dCBtYW5kYXRlIFZNX0VYSVRfSU5TVFJVQ1RJT05fTEVOIHRvIGJlIHNldCB3aGVuDQpFUFQgTUlT Q09ORklHIG9jY3Vycy4gV2hpbGUgb24gcmVhbCBoYXJkd2FyZSBpdCB3YXMgb2JzZXJ2ZWQgdG8g YmUgc2V0LA0Kc29tZSBoeXBlcnZpc29ycyBmb2xsb3cgdGhlIHNwZWMgYW5kIGRvbid0IHNldCBp dDsgd2UgZW5kIHVwIGFkdmFuY2luZw0KSVAgd2l0aCBzb21lIHJhbmRvbSB2YWx1ZS4NCg0KSSBj aGVja2VkIHdpdGggTWljcm9zb2Z0IGFuZCB0aGV5IGNvbmZpcm1lZCB0aGV5IGRvbid0IGZpbGwN ClZNX0VYSVRfSU5TVFJVQ1RJT05fTEVOIG9uIEVQVCBNSVNDT05GSUcuDQoNCkZpeCB0aGUgaXNz dWUgYnkgZG9pbmcgaW5zdHJ1Y3Rpb24gc2tpcCB0aHJvdWdoIGVtdWxhdG9yIHdoZW4gcnVubmlu Zw0KbmVzdGVkLg0KDQpGaXhlczogNjhjM2I0ZDE2NzZkODcwZjA0NTNjMzFkNWE1MmU3ZTY1Yzc0 NDhhZQ0KU3VnZ2VzdGVkLWJ5OiBSYWRpbSBLcsSNbcOhxZkgPHJrcmNtYXJAcmVkaGF0LmNvbT4N ClN1Z2dlc3RlZC1ieTogUGFvbG8gQm9uemluaSA8cGJvbnppbmlAcmVkaGF0LmNvbT4NClNpZ25l ZC1vZmYtYnk6IFZpdGFseSBLdXpuZXRzb3YgPHZrdXpuZXRzQHJlZGhhdC5jb20+DQpBY2tlZC1i eTogTWljaGFlbCBTLiBUc2lya2luIDxtc3RAcmVkaGF0LmNvbT4NClNpZ25lZC1vZmYtYnk6IFJh ZGltIEtyxI1tw6HFmSA8cmtyY21hckByZWRoYXQuY29tPg0KU2lnbmVkLW9mZi1ieTogU2FzaGEg TGV2aW4gPGFsZXhhbmRlci5sZXZpbkBtaWNyb3NvZnQuY29tPg0KLS0tDQogYXJjaC94ODYva3Zt L3ZteC5jIHwgMTYgKysrKysrKysrKysrKysrLQ0KIGFyY2gveDg2L2t2bS94ODYuYyB8ICAzICsr LQ0KIDIgZmlsZXMgY2hhbmdlZCwgMTcgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkNCg0K ZGlmZiAtLWdpdCBhL2FyY2gveDg2L2t2bS92bXguYyBiL2FyY2gveDg2L2t2bS92bXguYw0KaW5k ZXggYWU0ODAzYjIxM2QwLi5iZGQ4NGNlNDQ5MWUgMTAwNjQ0DQotLS0gYS9hcmNoL3g4Ni9rdm0v dm14LmMNCisrKyBiL2FyY2gveDg2L2t2bS92bXguYw0KQEAgLTY3NjUsNyArNjc2NSwyMSBAQCBz dGF0aWMgaW50IGhhbmRsZV9lcHRfbWlzY29uZmlnKHN0cnVjdCBrdm1fdmNwdSAqdmNwdSkNCiAJ aWYgKCFpc19ndWVzdF9tb2RlKHZjcHUpICYmDQogCSAgICAha3ZtX2lvX2J1c193cml0ZSh2Y3B1 LCBLVk1fRkFTVF9NTUlPX0JVUywgZ3BhLCAwLCBOVUxMKSkgew0KIAkJdHJhY2Vfa3ZtX2Zhc3Rf bW1pbyhncGEpOw0KLQkJcmV0dXJuIGt2bV9za2lwX2VtdWxhdGVkX2luc3RydWN0aW9uKHZjcHUp Ow0KKwkJLyoNCisJCSAqIERvaW5nIGt2bV9za2lwX2VtdWxhdGVkX2luc3RydWN0aW9uKCkgZGVw ZW5kcyBvbiB1bmRlZmluZWQNCisJCSAqIGJlaGF2aW9yOiBJbnRlbCdzIG1hbnVhbCBkb2Vzbid0 IG1hbmRhdGUNCisJCSAqIFZNX0VYSVRfSU5TVFJVQ1RJT05fTEVOIHRvIGJlIHNldCBpbiBWTUNT IHdoZW4gRVBUIE1JU0NPTkZJRw0KKwkJICogb2NjdXJzIGFuZCB3aGlsZSBvbiByZWFsIGhhcmR3 YXJlIGl0IHdhcyBvYnNlcnZlZCB0byBiZSBzZXQsDQorCQkgKiBvdGhlciBoeXBlcnZpc29ycyAo bmFtZWx5IEh5cGVyLVYpIGRvbid0IHNldCBpdCwgd2UgZW5kIHVwDQorCQkgKiBhZHZhbmNpbmcg SVAgd2l0aCBzb21lIHJhbmRvbSB2YWx1ZS4gRGlzYWJsZSBmYXN0IG1taW8gd2hlbg0KKwkJICog cnVubmluZyBuZXN0ZWQgYW5kIGtlZXAgaXQgZm9yIHJlYWwgaGFyZHdhcmUgaW4gaG9wZSB0aGF0 DQorCQkgKiBWTV9FWElUX0lOU1RSVUNUSU9OX0xFTiB3aWxsIGFsd2F5cyBiZSBzZXQgY29ycmVj dGx5Lg0KKwkJICovDQorCQlpZiAoIXN0YXRpY19jcHVfaGFzKFg4Nl9GRUFUVVJFX0hZUEVSVklT T1IpKQ0KKwkJCXJldHVybiBrdm1fc2tpcF9lbXVsYXRlZF9pbnN0cnVjdGlvbih2Y3B1KTsNCisJ CWVsc2UNCisJCQlyZXR1cm4geDg2X2VtdWxhdGVfaW5zdHJ1Y3Rpb24odmNwdSwgZ3BhLCBFTVVM VFlQRV9TS0lQLA0KKwkJCQkJCSAgICAgICBOVUxMLCAwKSA9PSBFTVVMQVRFX0RPTkU7DQogCX0N CiANCiAJcmV0ID0ga3ZtX21tdV9wYWdlX2ZhdWx0KHZjcHUsIGdwYSwgUEZFUlJfUlNWRF9NQVNL LCBOVUxMLCAwKTsNCmRpZmYgLS1naXQgYS9hcmNoL3g4Ni9rdm0veDg2LmMgYi9hcmNoL3g4Ni9r dm0veDg2LmMNCmluZGV4IGQ3NzI4YmNkOWEzYy4uM2IyYzNhYTJjZDA3IDEwMDY0NA0KLS0tIGEv YXJjaC94ODYva3ZtL3g4Ni5jDQorKysgYi9hcmNoL3g4Ni9rdm0veDg2LmMNCkBAIC01Njk5LDcg KzU2OTksOCBAQCBpbnQgeDg2X2VtdWxhdGVfaW5zdHJ1Y3Rpb24oc3RydWN0IGt2bV92Y3B1ICp2 Y3B1LA0KIAkJICogaGFuZGxlIHdhdGNocG9pbnRzIHlldCwgdGhvc2Ugd291bGQgYmUgaGFuZGxl ZCBpbg0KIAkJICogdGhlIGVtdWxhdGVfb3BzLg0KIAkJICovDQotCQlpZiAoa3ZtX3ZjcHVfY2hl Y2tfYnJlYWtwb2ludCh2Y3B1LCAmcikpDQorCQlpZiAoIShlbXVsYXRpb25fdHlwZSAmIEVNVUxU WVBFX1NLSVApICYmDQorCQkgICAga3ZtX3ZjcHVfY2hlY2tfYnJlYWtwb2ludCh2Y3B1LCAmcikp DQogCQkJcmV0dXJuIHI7DQogDQogCQljdHh0LT5pbnRlcnJ1cHRpYmlsaXR5ID0gMDsNCi0tIA0K Mi4xNS4xDQo=