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d="scan'208";a="5673782" Date: Thu, 12 Sep 2019 13:45:02 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Jan Beulich Message-ID: <20190912114502.ietnlugtxmazfgzi@Air-de-Roger> References: <30619001-ca6c-0450-a0bb-4d71687b281a@suse.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <30619001-ca6c-0450-a0bb-4d71687b281a@suse.com> User-Agent: NeoMutt/20180716 X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To AMSPEX02CL01.citrite.net (10.69.22.125) Subject: Re: [Xen-devel] [PATCH 5/9] x86/HVM: refuse CR3 loads with reserved (upper) bits set X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: George Dunlap , "xen-devel@lists.xenproject.org" , 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" T24gV2VkLCBTZXAgMTEsIDIwMTkgYXQgMDU6MjQ6NDFQTSArMDIwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4gV2hpbGUgYml0cyAxMSBhbmQgYmVsb3cgYXJlLCBpZiBub3QgdXNlZCBmb3Igb3RoZXIg cHVycG9zZXMsIHJlc2VydmVkCj4gYnV0IGlnbm9yZWQsIGJpdHMgYmV5b25kIHBoeXNpY2FsIGFk ZHJlc3Mgd2lkdGggYXJlIHN1cHBvc2VkIHRvIHJhaXNlCj4gZXhjZXB0aW9ucyAoYXQgbGVhc3Qg aW4gdGhlIG5vbi1uZXN0ZWQgY2FzZTsgSSdtIG5vdCBjb252aW5jZWQgdGhlCj4gY3VycmVudCBu ZXN0ZWQgU1ZNL1ZNWCBiZWhhdmlvciBvZiByYWlzaW5nICNHUCgwKSBoZXJlIGlzIGNvcnJlY3Qs IGJ1dAo+IHRoYXQncyBub3QgdGhlIHN1YmplY3Qgb2YgdGhpcyBjaGFuZ2UpLgo+IAo+IEludHJv ZHVjZSBjdXJyZCBhcyBhIGxvY2FsIHZhcmlhYmxlLCBhbmQgcmVwbGFjZSBvdGhlciB2LT5kb21h aW4KPiBpbnN0YW5jZXMgYXQgdGhlIHNhbWUgdGltZS4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBKYW4g QmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+CgpMR1RNLCBqdXN0IHR3byBjb21tZW50cyB3aGlj aCBhcmUgbm90IHJlbGF0ZWQgdG8gZnVuY3Rpb25hbGl0eSwgc286CgpSZXZpZXdlZC1ieTogUm9n ZXIgUGF1IE1vbm7DqSA8cm9nZXIucGF1QGNpdHJpeC5jb20+Cgo+IAo+IC0tLSBhL3hlbi9hcmNo L3g4Ni9odm0vaHZtLmMKPiArKysgYi94ZW4vYXJjaC94ODYvaHZtL2h2bS5jCj4gQEAgLTEwMDQs NiArMTAwNCwxMyBAQCBzdGF0aWMgaW50IGh2bV9sb2FkX2NwdV9jdHh0KHN0cnVjdCBkb21hCj4g ICAgICAgICAgcmV0dXJuIC1FSU5WQUw7Cj4gICAgICB9Cj4gIAo+ICsgICAgaWYgKCBjdHh0LmNy MyAmIH4oKDFVTCA8PCBkLT5hcmNoLmNwdWlkLT5leHRkLm1heHBoeXNhZGRyKSAtIDEpICkKPiAr ICAgIHsKPiArICAgICAgICBwcmludGsoWEVOTE9HX0dfRVJSICJIVk0lZCByZXN0b3JlOiBiYWQg Q1IzICUjIiBQUkl4NjQgIlxuIiwKCmdwcmludGsgd291bGQgYmUgbW9yZSBuYXR1cmFsIGhlcmUg SU1PLgoKPiArICAgICAgICAgICAgICAgZC0+ZG9tYWluX2lkLCBjdHh0LmNyMyk7Cj4gKyAgICAg ICAgcmV0dXJuIFg4NkVNVUxfRVhDRVBUSU9OOwo+ICsgICAgfQo+ICsKPiAgICAgIGlmICggKGN0 eHQuZmxhZ3MgJiB+WEVOX1g4Nl9GUFVfSU5JVElBTElTRUQpICE9IDAgKQo+ICAgICAgewo+ICAg ICAgICAgIGdwcmludGsoWEVOTE9HX0VSUiwgImJhZCBmbGFncyB2YWx1ZSBpbiBDUFUgY29udGV4 dDogJSN4XG4iLAo+IEBAIC0yMjkwLDEwICsyMjk3LDE5IEBAIGludCBodm1fc2V0X2NyMCh1bnNp Z25lZCBsb25nIHZhbHVlLCBib28KPiAgaW50IGh2bV9zZXRfY3IzKHVuc2lnbmVkIGxvbmcgdmFs dWUsIGJvb2wgbm9mbHVzaCwgYm9vbCBtYXlfZGVmZXIpCj4gIHsKPiAgICAgIHN0cnVjdCB2Y3B1 ICp2ID0gY3VycmVudDsKPiArICAgIHN0cnVjdCBkb21haW4gKmN1cnJkID0gdi0+ZG9tYWluOwo+ ICAgICAgc3RydWN0IHBhZ2VfaW5mbyAqcGFnZTsKPiAgICAgIHVuc2lnbmVkIGxvbmcgb2xkID0g di0+YXJjaC5odm0uZ3Vlc3RfY3JbM107Cj4gIAo+IC0gICAgaWYgKCBtYXlfZGVmZXIgJiYgdW5s aWtlbHkodi0+ZG9tYWluLT5hcmNoLm1vbml0b3Iud3JpdGVfY3RybHJlZ19lbmFibGVkICYKPiAr ICAgIGlmICggdmFsdWUgJiB+KCgxVUwgPDwgY3VycmQtPmFyY2guY3B1aWQtPmV4dGQubWF4cGh5 c2FkZHIpIC0gMSkgKQoKSSB3b3VsZCBjb25zaWRlciBpbnRyb2R1Y2luZyBhIG1hY3JvL2lubGlu ZSBoZWxwZXIgZm9yIHRoaXMsIHNpbmNlCml0J3MgYWxyZWFkeSB1c2VkIHR3aWNlIGluIHRoaXMg cGF0Y2guCgpUaGFua3MsIFJvZ2VyLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVu cHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZv L3hlbi1kZXZlbA==