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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <3ce4ab2c-8cb6-1482-6ce9-3d5b019e10c1@suse.com> Content-Language: en-US Subject: [Xen-devel] [PATCH v3 4/5] 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 , Andrew Cooper , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" V2hpbGUgYml0cyAxMSBhbmQgYmVsb3cgYXJlLCBpZiBub3QgdXNlZCBmb3Igb3RoZXIgcHVycG9z ZXMsIHJlc2VydmVkCmJ1dCBpZ25vcmVkLCBiaXRzIGJleW9uZCBwaHlzaWNhbCBhZGRyZXNzIHdp ZHRoIGFyZSBzdXBwb3NlZCB0byByYWlzZQpleGNlcHRpb25zIChhdCBsZWFzdCBpbiB0aGUgbm9u LW5lc3RlZCBjYXNlOyBJJ20gbm90IGNvbnZpbmNlZCB0aGUKY3VycmVudCBuZXN0ZWQgU1ZNL1ZN WCBiZWhhdmlvciBvZiByYWlzaW5nICNHUCgwKSBoZXJlIGlzIGNvcnJlY3QsIGJ1dAp0aGF0J3Mg bm90IHRoZSBzdWJqZWN0IG9mIHRoaXMgY2hhbmdlKS4KCkludHJvZHVjZSBjdXJyZCBhcyBhIGxv Y2FsIHZhcmlhYmxlLCBhbmQgcmVwbGFjZSBvdGhlciB2LT5kb21haW4KaW5zdGFuY2VzIGF0IHRo ZSBzYW1lIHRpbWUuCgpTaWduZWQtb2ZmLWJ5OiBKYW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5j b20+ClJldmlld2VkLWJ5OiBSb2dlciBQYXUgTW9ubsOpIDxyb2dlci5wYXVAY2l0cml4LmNvbT4K UmV2aWV3ZWQtYnk6IEFuZHJldyBDb29wZXIgPGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+Ci0t LQp2MzogQ29ycmVjdCByZXR1cm4gdmFsdWUgaW4gaHZtX2xvYWRfY3B1X2N0eHQoKS4gUmUtYmFz ZS4KdjI6IFNpbXBsaWZ5IHRoZSBleHByZXNzaW9ucyB1c2VkIGZvciB0aGUgcmVzZXJ2ZWQgYml0 IGNoZWNrcy4KCi0tLQogeGVuL2FyY2gveDg2L2h2bS9odm0uYyB8ICAgMjQgKysrKysrKysrKysr KysrKysrKy0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMTkgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlv bnMoLSkKCi0tLSBhL3hlbi9hcmNoL3g4Ni9odm0vaHZtLmMKKysrIGIveGVuL2FyY2gveDg2L2h2 bS9odm0uYwpAQCAtMTAxNiw2ICsxMDE2LDEzIEBAIHN0YXRpYyBpbnQgaHZtX2xvYWRfY3B1X2N0 eHQoc3RydWN0IGRvbWEKICAgICAgICAgcmV0dXJuIC1FSU5WQUw7CiAgICAgfQogCisgICAgaWYg KCBjdHh0LmNyMyA+PiBkLT5hcmNoLmNwdWlkLT5leHRkLm1heHBoeXNhZGRyICkKKyAgICB7Cisg ICAgICAgIHByaW50ayhYRU5MT0dfR19FUlIgIkhWTSVkIHJlc3RvcmU6IGJhZCBDUjMgJSMiIFBS SXg2NCAiXG4iLAorICAgICAgICAgICAgICAgZC0+ZG9tYWluX2lkLCBjdHh0LmNyMyk7CisgICAg ICAgIHJldHVybiAtRUlOVkFMOworICAgIH0KKwogICAgIGlmICggKGN0eHQuZmxhZ3MgJiB+WEVO X1g4Nl9GUFVfSU5JVElBTElTRUQpICE9IDAgKQogICAgIHsKICAgICAgICAgZ3ByaW50ayhYRU5M T0dfRVJSLCAiYmFkIGZsYWdzIHZhbHVlIGluIENQVSBjb250ZXh0OiAlI3hcbiIsCkBAIC0yMzAz LDEwICsyMzEwLDE4IEBAIGludCBodm1fc2V0X2NyMCh1bnNpZ25lZCBsb25nIHZhbHVlLCBib28K IGludCBodm1fc2V0X2NyMyh1bnNpZ25lZCBsb25nIHZhbHVlLCBib29sIG5vZmx1c2gsIGJvb2wg bWF5X2RlZmVyKQogewogICAgIHN0cnVjdCB2Y3B1ICp2ID0gY3VycmVudDsKKyAgICBzdHJ1Y3Qg ZG9tYWluICpjdXJyZCA9IHYtPmRvbWFpbjsKICAgICBzdHJ1Y3QgcGFnZV9pbmZvICpwYWdlOwog ICAgIHVuc2lnbmVkIGxvbmcgb2xkID0gdi0+YXJjaC5odm0uZ3Vlc3RfY3JbM107CiAKLSAgICBp ZiAoIG1heV9kZWZlciAmJiB1bmxpa2VseSh2LT5kb21haW4tPmFyY2gubW9uaXRvci53cml0ZV9j dHJscmVnX2VuYWJsZWQgJgorICAgIGlmICggdmFsdWUgPj4gY3VycmQtPmFyY2guY3B1aWQtPmV4 dGQubWF4cGh5c2FkZHIgKQorICAgIHsKKyAgICAgICAgSFZNX0RCR19MT0coREJHX0xFVkVMXzEs CisgICAgICAgICAgICAgICAgICAgICJBdHRlbXB0IHRvIHNldCByZXNlcnZlZCBDUjMgYml0KHMp OiAlbHgiLCB2YWx1ZSk7CisgICAgICAgIHJldHVybiBYODZFTVVMX0VYQ0VQVElPTjsKKyAgICB9 CisKKyAgICBpZiAoIG1heV9kZWZlciAmJiB1bmxpa2VseShjdXJyZC0+YXJjaC5tb25pdG9yLndy aXRlX2N0cmxyZWdfZW5hYmxlZCAmCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgbW9u aXRvcl9jdHJscmVnX2JpdG1hc2soVk1fRVZFTlRfWDg2X0NSMykpICkKICAgICB7CiAgICAgICAg IEFTU0VSVCh2LT5hcmNoLnZtX2V2ZW50KTsKQEAgLTIzMjIsMTMgKzIzMzcsMTIgQEAgaW50IGh2 bV9zZXRfY3IzKHVuc2lnbmVkIGxvbmcgdmFsdWUsIGJvbwogICAgICAgICB9CiAgICAgfQogCi0g ICAgaWYgKCBodm1fcGFnaW5nX2VuYWJsZWQodikgJiYgIXBhZ2luZ19tb2RlX2hhcCh2LT5kb21h aW4pICYmCisgICAgaWYgKCBodm1fcGFnaW5nX2VuYWJsZWQodikgJiYgIXBhZ2luZ19tb2RlX2hh cChjdXJyZCkgJiYKICAgICAgICAgICgodmFsdWUgXiB2LT5hcmNoLmh2bS5ndWVzdF9jclszXSkg Pj4gUEFHRV9TSElGVCkgKQogICAgIHsKICAgICAgICAgLyogU2hhZG93LW1vZGUgQ1IzIGNoYW5n ZS4gQ2hlY2sgUERCUiBhbmQgdXBkYXRlIHJlZmNvdW50cy4gKi8KICAgICAgICAgSFZNX0RCR19M T0coREJHX0xFVkVMX1ZNTVUsICJDUjMgdmFsdWUgPSAlbHgiLCB2YWx1ZSk7Ci0gICAgICAgIHBh Z2UgPSBnZXRfcGFnZV9mcm9tX2dmbih2LT5kb21haW4sIHZhbHVlID4+IFBBR0VfU0hJRlQsCi0g ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBOVUxMLCBQMk1fQUxMT0MpOworICAgICAg ICBwYWdlID0gZ2V0X3BhZ2VfZnJvbV9nZm4oY3VycmQsIHZhbHVlID4+IFBBR0VfU0hJRlQsIE5V TEwsIFAyTV9BTExPQyk7CiAgICAgICAgIGlmICggIXBhZ2UgKQogICAgICAgICAgICAgZ290byBi YWRfY3IzOwogCkBAIC0yMzQ0LDcgKzIzNTgsNyBAQCBpbnQgaHZtX3NldF9jcjModW5zaWduZWQg bG9uZyB2YWx1ZSwgYm9vCiAKICBiYWRfY3IzOgogICAgIGdkcHJpbnRrKFhFTkxPR19FUlIsICJJ bnZhbGlkIENSM1xuIik7Ci0gICAgZG9tYWluX2NyYXNoKHYtPmRvbWFpbik7CisgICAgZG9tYWlu X2NyYXNoKGN1cnJkKTsKICAgICByZXR1cm4gWDg2RU1VTF9VTkhBTkRMRUFCTEU7CiB9CiAKCgpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwg bWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3Rz LnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs