From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Raslan, KarimAllah" Subject: Re: [PATCH] X86/KVM: Update the exit_qualification access bits while walking an address Date: Mon, 12 Mar 2018 08:52:56 +0000 Message-ID: <1520844776.8021.6.camel@amazon.de> References: <1519841208-23349-1-git-send-email-karahmed@amazon.de> <1520158672.28771.4.camel@amazon.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "tglx@linutronix.de" , "hpa@zytor.com" , "rkrcmar@redhat.com" , "mingo@redhat.com" To: "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "pbonzini@redhat.com" , "x86@kernel.org" Return-path: In-Reply-To: <1520158672.28771.4.camel@amazon.de> Content-Language: en-US Content-ID: Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org T24gU3VuLCAyMDE4LTAzLTA0IGF0IDEwOjE3ICswMDAwLCBSYXNsYW4sIEthcmltQWxsYWggd3Jv dGU6DQo+IE9uIEZyaSwgMjAxOC0wMy0wMiBhdCAxODo0MSArMDEwMCwgUGFvbG8gQm9uemluaSB3 cm90ZToNCj4gPiANCj4gPiBPbiAyOC8wMi8yMDE4IDE5OjA2LCBLYXJpbUFsbGFoIEFobWVkIHdy b3RlOg0KPiA+ID4gDQo+ID4gPiANCj4gPiA+IC4uLiB0byBhdm9pZCBoYXZpbmcgYSBzdGFsZSB2 YWx1ZSB3aGVuIGhhbmRsaW5nIGFuIEVQVCBtaXNjb25maWcgZm9yIE1NSU8NCj4gPiA+IHJlZ2lv bnMuDQo+ID4gPiANCj4gPiA+IE1NSU8gcmVnaW9ucyB0aGF0IGFyZSBub3QgcGFzc2VkLXRocm91 Z2ggdG8gdGhlIGd1ZXN0IGFyZSBoYW5kbGVkIHRocm91Z2gNCj4gPiA+IEVQVCBtaXNjb25maWdz LiBUaGUgZmlyc3QgdGltZSBhIGNlcnRhaW4gTU1JTyBwYWdlIGlzIHRvdWNoZWQgaXQgY2F1c2Vz IGFuDQo+ID4gPiBFUFQgdmlvbGF0aW9uLCB0aGVuIEtWTSBtYXJrcyB0aGUgRVBUIGVudHJ5IHRv IGNhdXNlIGFuIEVQVCBtaXNjb25maWcNCj4gPiA+IGluc3RlYWQuIEFueSBzdWJzZXF1ZW50IGFj Y2Vzc2VzIHRvIHRoZSBlbnRyeSB3aWxsIGdlbmVyYXRlIGFuIEVQVA0KPiA+ID4gbWlzY29uZmln Lg0KPiA+ID4gDQo+ID4gPiBUaGluZ3MgZ2V0cyBzbGlnaHRseSBjb21wbGljYXRlZCB3aXRoIG5l c3RlZCBndWVzdCBoYW5kbGluZyBmb3IgTU1JTw0KPiA+ID4gcmVnaW9ucyB0aGF0IGFyZSBub3Qg cGFzc2VkIHRocm91Z2ggZnJvbSBMMCAoaS5lLiBlbXVsYXRlZCBieSBMMA0KPiA+ID4gdXNlci1z cGFjZSkuDQo+ID4gPiANCj4gPiA+IEFuIEVQVCB2aW9sYXRpb24gZm9yIG9uZSBvZiB0aGVzZSBN TUlPIHJlZ2lvbnMgZnJvbSBMMiwgZXhpdHMgdG8gTDANCj4gPiA+IGh5cGVydmlzb3IuIEwwIHdv dWxkIHRoZW4gbG9vayBhdCB0aGUgRVBUMTIgbWFwcGluZyBmb3IgTDEgaHlwZXJ2aXNvciBhbmQN Cj4gPiA+IHJlYWxpemUgaXQgaXMgbm90IHByZXNlbnQgKG9yIG5vdCBzdWZmaWNpZW50IHRvIHNl cnZlIHRoZSByZXF1ZXN0KS4gVGhlbiBMMA0KPiA+ID4gaW5qZWN0cyBhbiBFUFQgdmlvbGF0aW9u IHRvIEwxLiBMMSB3b3VsZCB0aGVuIHVwZGF0ZSBpdHMgRVBUIG1hcHBpbmdzLiBUaGUNCj4gPiA+ IEVYSVRfUVVBTElGSUNBVElPTiB2YWx1ZSBmb3IgTDEgd291bGQgY29tZSBmcm9tIGV4aXRfcXVh bGlmaWNhdGlvbiB2YXJpYWJsZQ0KPiA+ID4gaW4gInN0cnVjdCB2Y3B1Ii4gVGhlIHByb2JsZW0g aXMgdGhhdCB0aGlzIHZhcmlhYmxlIGlzIG9ubHkgdXBkYXRlZCBvbiBFUFQNCj4gPiA+IHZpb2xh dGlvbiBhbmQgbm90IG9uIEVQVCBtaXNjb25maWcuIFNvIGlmIGFuIEVQVCB2aW9sYXRpb24gYmVj YXVzZSBvZiBhDQo+ID4gPiByZWFkIGhhcHBlbmVkIGZpcnN0LCB0aGVuIGFuIEVQVCBtaXNjb25m aWcgYmVjYXVzZSBvZiBhIHdyaXRlIGhhcHBlbmVkDQo+ID4gPiBhZnRlcndhcmRzLiBUaGUgTDAg aHlwZXJ2aXNvciB3aWxsIHN0aWxsIGNvbnRhaW4gZXhpdF9xdWFsaWZpY2F0aW9uIHZhbHVlDQo+ ID4gPiBmcm9tIHRoZSBwcmV2aW91cyByZWFkIGluc3RlYWQgb2YgdGhlIHdyaXRlIGFuZCBlbmQg dXAgaW5qZWN0aW5nIGFuIEVQVA0KPiA+ID4gdmlvbGF0aW9uIHRvIHRoZSBMMSBoeXBlcnZpc29y IHdpdGggYW4gb3V0IG9mIGRhdGUgRVhJVF9RVUFMSUZJQ0FUSU9OLg0KPiA+ID4gDQo+ID4gPiBU aGUgRVBUIHZpb2xhdGlvbiB0aGF0IGlzIGluamVjdGVkIGZyb20gTDAgdG8gTDEgbmVlZHMgdG8g aGF2ZSB0aGUgY29ycmVjdA0KPiA+ID4gRVhJVF9RVUFMSUZJQ0FUSU9OIHNwZWNpYWxseSBmb3Ig dGhlIGFjY2VzcyBiaXRzIGJlY2F1c2UgdGhlIGluZGl2aWR1YWwNCj4gPiA+IGFjY2VzcyBiaXRz IGZvciBNTUlPIEVQVHMgYXJlIHVwZGF0ZWQgb25seSBvbiBhY3R1YWwgYWNjZXNzIG9mIHRoaXMN Cj4gPiA+IHNwZWNpZmljIHR5cGUuIFNvIGZvciB0aGUgZXhhbXBsZSBhYm92ZSwgdGhlIEwxIGh5 cGVydmlzb3Igd2lsbCBrZWVwDQo+ID4gPiB1cGRhdGluZyBvbmx5IHRoZSByZWFkIGJpdCBpbiB0 aGUgRVBUIHRoZW4gcmVzdW1lIHRoZSBMMiBndWVzdC4gVGhlIEwyDQo+ID4gPiBndWVzdCB3b3Vs ZCBlbmQgdXAgY2F1c2luZyBhbm90aGVyIGV4aXQgd2hlcmUgdGhlIEwwICphZ2Fpbiogd2lsbCBp bmplY3QNCj4gPiA+IGFub3RoZXIgRVBUIHZpb2xhdGlvbiB0byBMMSBoeXBlcnZpc29yIHdpdGgg KmFnYWluKiBhbiBvdXQgb2YgZGF0ZQ0KPiA+ID4gZXhpdF9xdWFsaWZpY2F0aW9uIHdoaWNoIGlu ZGljYXRlcyBhIHJlYWQgYW5kIG5vdCBhIHdyaXRlLiBUaGVuIHRoaXMNCj4gPiA+IHBpbmctcG9u ZyBqdXN0IGtlZXBzIGhhcHBlbmluZyB3aXRob3V0IG1ha2luZyBhbnkgZm9yd2FyZCBwcm9ncmVz cy4NCj4gPiA+IA0KPiA+ID4gVGhlIGJlaGF2aW9yIG9mIG1hcHBpbmcgTU1JTyByZWdpb25zIGNo YW5nZWQgaW46DQo+ID4gPiANCj4gPiA+ICAgIGNvbW1pdCBhMzQwYjNlMjI5YjI0ICgia3ZtOiBN YXAgUEZOLXR5cGUgbWVtb3J5IHJlZ2lvbnMgYXMgd3JpdGFibGUgKGlmIHBvc3NpYmxlKSIpDQo+ ID4gPiANCj4gPiA+IC4uLiB3aGVyZSBhbiBFUFQgdmlvbGF0aW9uIGZvciBhIHJlYWQgd291bGQg YWxzbyBmaXh1cCB0aGUgd3JpdGUgYml0cyB0bw0KPiA+ID4gYXZvaWQgYW5vdGhlciBFUFQgdmlv bGF0aW9uIHdoaWNoIGJ5IGFjY2lkZGVudCB3b3VsZCBmaXggdGhlIGJ1ZyBtZW50aW9uZWQNCj4g PiA+IGFib3ZlLg0KPiA+ID4gDQo+ID4gPiBUaGlzIGNvbW1pdCBmaXhlcyB0aGlzIHNpdHVhdGlv biBhbmQgZW5zdXJlcyB0aGF0IHRoZSBhY2Nlc3MgYml0cyBmb3IgdGhlDQo+ID4gPiBleGl0X3F1 YWxpZmNhdGlvbiBpcyB1cCB0byBkYXRlLiBUaGF0IGVuc3VyZXMgdGhhdCBldmVuIEwxIGh5cGVy dmlzb3INCj4gPiA+IHJ1bm5pbmcgd2l0aCBhIEtWTSB2ZXJzaW9uIGJlZm9yZSB0aGUgY29tbWl0 IG1lbnRpb25lZCBhYm92ZSB3b3VsZCBzdGlsbA0KPiA+ID4gd29yay4NCj4gPiA+IA0KPiA+ID4g KCBUaGUgZGVzY3JpcHRpb24gYWJvdmUgYXNzdW1lcyBFUFQgdG8gYmUgYXZhaWxhYmxlIGFuZCB1 c2VkIGJ5IEwxDQo+ID4gPiAgIGh5cGVydmlzb3IgKyB0aGUgTDEgaHlwZXJ2aXNvciBpcyBwYXNz aW5nIHRocm91Z2ggdGhlIE1NSU8gcmVnaW9uIHRvIHRoZSBMMg0KPiA+ID4gICBndWVzdCB3aGls ZSB0aGlzIE1NSU8gcmVnaW9uIGlzIGVtdWxhdGVkIGJ5IHRoZSBMMCB1c2VyLXNwYWNlICkuDQo+ ID4gDQo+ID4gVGhpcyBsb29rcyBva2F5LiAgV291bGQgaXQgYmUgcG9zc2libGUgdG8gYWRkIGEg a3ZtLXVuaXQtdGVzdHMgdGVzdGNhc2UNCj4gPiBmb3IgdGhpcz8NCj4gDQo+IFl1cCwgbWFrZXMg c2Vuc2UuIEp1c3Qgc2VudCBvdXQgYSBwYXRjaCBmb3Iga3ZtLXVuaXQtdGVzdHMuDQoNCldhcyB0 aGUga3ZtLXVuaXQtdGVzdCB0aGF0IEkgcG9zdGVkIHN1ZmZpY2llbnQ/DQoNCj4gDQo+IFRoYW5r cy4NCj4gDQo+ID4gDQo+ID4gDQo+ID4gVGhhbmtzLA0KPiA+IA0KPiA+IFBhb2xvDQo+ID4gDQo+ ID4gPiANCj4gPiA+IA0KPiA+ID4gQ2M6IFBhb2xvIEJvbnppbmkgPHBib256aW5pQHJlZGhhdC5j b20+DQo+ID4gPiBDYzogUmFkaW0gS3LEjW3DocWZIDxya3JjbWFyQHJlZGhhdC5jb20+DQo+ID4g PiBDYzogVGhvbWFzIEdsZWl4bmVyIDx0Z2x4QGxpbnV0cm9uaXguZGU+DQo+ID4gPiBDYzogSW5n byBNb2xuYXIgPG1pbmdvQHJlZGhhdC5jb20+DQo+ID4gPiBDYzogSC4gUGV0ZXIgQW52aW4gPGhw YUB6eXRvci5jb20+DQo+ID4gPiBDYzogeDg2QGtlcm5lbC5vcmcNCj4gPiA+IENjOiBrdm1Admdl ci5rZXJuZWwub3JnDQo+ID4gPiBDYzogbGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZw0KPiA+ ID4gU2lnbmVkLW9mZi1ieTogS2FyaW1BbGxhaCBBaG1lZCA8a2FyYWhtZWRAYW1hem9uLmRlPg0K PiA+ID4gLS0tDQo+ID4gPiAgYXJjaC94ODYva3ZtL3BhZ2luZ190bXBsLmggfCAxMSArKysrKysr KystLQ0KPiA+ID4gIDEgZmlsZSBjaGFuZ2VkLCA5IGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25z KC0pDQo+ID4gPiANCj4gPiA+IGRpZmYgLS1naXQgYS9hcmNoL3g4Ni9rdm0vcGFnaW5nX3RtcGwu aCBiL2FyY2gveDg2L2t2bS9wYWdpbmdfdG1wbC5oDQo+ID4gPiBpbmRleCA1YWJhZTcyLi42Mjg4 ZTlkIDEwMDY0NA0KPiA+ID4gLS0tIGEvYXJjaC94ODYva3ZtL3BhZ2luZ190bXBsLmgNCj4gPiA+ ICsrKyBiL2FyY2gveDg2L2t2bS9wYWdpbmdfdG1wbC5oDQo+ID4gPiBAQCAtNDUyLDE0ICs0NTIs MjEgQEAgc3RhdGljIGludCBGTkFNRSh3YWxrX2FkZHJfZ2VuZXJpYykoc3RydWN0IGd1ZXN0X3dh bGtlciAqd2Fsa2VyLA0KPiA+ID4gIAkgKiBkb25lIGJ5IGlzX3JzdmRfYml0c19zZXQoKSBhYm92 ZS4NCj4gPiA+ICAJICoNCj4gPiA+ICAJICogV2Ugc2V0IHVwIHRoZSB2YWx1ZSBvZiBleGl0X3F1 YWxpZmljYXRpb24gdG8gaW5qZWN0Og0KPiA+ID4gLQkgKiBbMjowXSAtIERlcml2ZSBmcm9tIFsy OjBdIG9mIHJlYWwgZXhpdF9xdWFsaWZpY2F0aW9uIGF0IEVQVCB2aW9sYXRpb24NCj4gPiA+ICsJ ICogWzI6MF0gLSBEZXJpdmUgZnJvbSB0aGUgYWNjZXNzIGJpdHMuIFRoZSBleGl0X3F1YWxpZmlj YXRpb24gbWlnaHQgYmUNCj4gPiA+ICsJICogICAgICAgICBvdXQgb2YgZGF0ZSBpZiBpdCBpcyBz ZXJ2aW5nIGFuIEVQVCBtaXNjb25maWd1cmF0aW9uLg0KPiA+ID4gIAkgKiBbNTozXSAtIENhbGN1 bGF0ZWQgYnkgdGhlIHBhZ2Ugd2FsayBvZiB0aGUgZ3Vlc3QgRVBUIHBhZ2UgdGFibGVzDQo+ID4g PiAgCSAqIFs3OjhdIC0gRGVyaXZlZCBmcm9tIFs3OjhdIG9mIHJlYWwgZXhpdF9xdWFsaWZpY2F0 aW9uDQo+ID4gPiAgCSAqDQo+ID4gPiAgCSAqIFRoZSBvdGhlciBiaXRzIGFyZSBzZXQgdG8gMC4N Cj4gPiA+ICAJICovDQo+ID4gPiAgCWlmICghKGVycmNvZGUgJiBQRkVSUl9SU1ZEX01BU0spKSB7 DQo+ID4gPiAtCQl2Y3B1LT5hcmNoLmV4aXRfcXVhbGlmaWNhdGlvbiAmPSAweDE4NzsNCj4gPiA+ ICsJCXZjcHUtPmFyY2guZXhpdF9xdWFsaWZpY2F0aW9uICY9IDB4MTgwOw0KPiA+ID4gKwkJaWYg KHdyaXRlX2ZhdWx0KQ0KPiA+ID4gKwkJCXZjcHUtPmFyY2guZXhpdF9xdWFsaWZpY2F0aW9uIHw9 IEVQVF9WSU9MQVRJT05fQUNDX1dSSVRFOw0KPiA+ID4gKwkJaWYgKHVzZXJfZmF1bHQpDQo+ID4g PiArCQkJdmNwdS0+YXJjaC5leGl0X3F1YWxpZmljYXRpb24gfD0gRVBUX1ZJT0xBVElPTl9BQ0Nf UkVBRDsNCj4gPiA+ICsJCWlmIChmZXRjaF9mYXVsdCkNCj4gPiA+ICsJCQl2Y3B1LT5hcmNoLmV4 aXRfcXVhbGlmaWNhdGlvbiB8PSBFUFRfVklPTEFUSU9OX0FDQ19JTlNUUjsNCj4gPiA+ICAJCXZj cHUtPmFyY2guZXhpdF9xdWFsaWZpY2F0aW9uIHw9IChwdGVfYWNjZXNzICYgMHg3KSA8PCAzOw0K PiA+ID4gIAl9DQo+ID4gPiAgI2VuZGlmDQo+ID4gPiANCj4gPiANCj4gPiANCkFtYXpvbiBEZXZl bG9wbWVudCBDZW50ZXIgR2VybWFueSBHbWJICkJlcmxpbiAtIERyZXNkZW4gLSBBYWNoZW4KbWFp biBvZmZpY2U6IEtyYXVzZW5zdHIuIDM4LCAxMDExNyBCZXJsaW4KR2VzY2hhZWZ0c2Z1ZWhyZXI6 IERyLiBSYWxmIEhlcmJyaWNoLCBDaHJpc3RpYW4gU2NobGFlZ2VyClVzdC1JRDogREUyODkyMzc4 NzkKRWluZ2V0cmFnZW4gYW0gQW10c2dlcmljaHQgQ2hhcmxvdHRlbmJ1cmcgSFJCIDE0OTE3MyBC Cg==