From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) by kanga.kvack.org (Postfix) with ESMTP id 99E4F6B78FF for ; Thu, 6 Dec 2018 03:31:30 -0500 (EST) Received: by mail-pg1-f198.google.com with SMTP id r13so12858311pgb.7 for ; Thu, 06 Dec 2018 00:31:30 -0800 (PST) Received: from mga05.intel.com (mga05.intel.com. [192.55.52.43]) by mx.google.com with ESMTPS id 64si21590775pfe.74.2018.12.06.00.31.29 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Dec 2018 00:31:29 -0800 (PST) From: "Sakkinen, Jarkko" Subject: Re: [RFC v2 04/13] x86/mm: Add helper functions for MKTME memory encryption keys Date: Thu, 6 Dec 2018 08:31:24 +0000 Message-ID: <6cabe09dd085f74a3111faebeb285cf0cac1146d.camel@intel.com> References: In-Reply-To: Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: <216ECE3FADEC4042AABDCAEF5A292CDA@intel.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: "tglx@linutronix.de" , "Schofield, Alison" , "dhowells@redhat.com" Cc: "kirill.shutemov@linux.intel.com" , "peterz@infradead.org" , "jmorris@namei.org" , "Huang, Kai" , "keyrings@vger.kernel.org" , "linux-mm@kvack.org" , "linux-security-module@vger.kernel.org" , "Williams, Dan J" , "x86@kernel.org" , "hpa@zytor.com" , "mingo@redhat.com" , "luto@kernel.org" , "bp@alien8.de" , Hansen,, Jun T24gTW9uLCAyMDE4LTEyLTAzIGF0IDIzOjM5IC0wODAwLCBBbGlzb24gU2Nob2ZpZWxkIHdyb3Rl Og0KPiArZXh0ZXJuIGludCBta3RtZV9tYXBfYWxsb2Modm9pZCk7DQo+ICtleHRlcm4gdm9pZCBt a3RtZV9tYXBfZnJlZSh2b2lkKTsNCj4gK2V4dGVybiB2b2lkIG1rdG1lX21hcF9sb2NrKHZvaWQp Ow0KPiArZXh0ZXJuIHZvaWQgbWt0bWVfbWFwX3VubG9jayh2b2lkKTsNCj4gK2V4dGVybiBpbnQg bWt0bWVfbWFwX21hcHBlZF9rZXlpZHModm9pZCk7DQo+ICtleHRlcm4gdm9pZCBta3RtZV9tYXBf c2V0X2tleWlkKGludCBrZXlpZCwgdm9pZCAqa2V5KTsNCj4gK2V4dGVybiB2b2lkIG1rdG1lX21h cF9mcmVlX2tleWlkKGludCBrZXlpZCk7DQo+ICtleHRlcm4gaW50IG1rdG1lX21hcF9rZXlpZF9m cm9tX2tleSh2b2lkICprZXkpOw0KPiArZXh0ZXJuIHZvaWQgKm1rdG1lX21hcF9rZXlfZnJvbV9r ZXlpZChpbnQga2V5aWQpOw0KPiArZXh0ZXJuIGludCBta3RtZV9tYXBfZ2V0X2ZyZWVfa2V5aWQo dm9pZCk7DQoNCk5vIG5lZWQgZm9yIGV4dGVybiBrZXl3b3JkIGZvciBmdW5jdGlvbiBkZWNsYXJh dGlvbnMuIEl0IGlzDQpvbmx5IG5lZWRlZCBmb3IgdmFyaWFibGUgZGVjbGFyYXRpb25zLg0KDQo+ ICsNCj4gIERFQ0xBUkVfU1RBVElDX0tFWV9GQUxTRShta3RtZV9lbmFibGVkX2tleSk7DQo+ICBz dGF0aWMgaW5saW5lIGJvb2wgbWt0bWVfZW5hYmxlZCh2b2lkKQ0KPiAgew0KPiBkaWZmIC0tZ2l0 IGEvYXJjaC94ODYvbW0vbWt0bWUuYyBiL2FyY2gveDg2L21tL21rdG1lLmMNCj4gaW5kZXggYzgx NzI3NTQwZTdjLi4zNDIyNGQ0ZTNmNDUgMTAwNjQ0DQo+IC0tLSBhL2FyY2gveDg2L21tL21rdG1l LmMNCj4gKysrIGIvYXJjaC94ODYvbW0vbWt0bWUuYw0KPiBAQCAtNDAsNiArNDAsOTcgQEAgaW50 IF9fdm1hX2tleWlkKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hKQ0KPiAgCXJldHVybiAocHJv dCAmIG1rdG1lX2tleWlkX21hc2spID4+IG1rdG1lX2tleWlkX3NoaWZ0Ow0KPiAgfQ0KPiAgDQo+ ICsvKg0KPiArICogc3RydWN0IG1rdG1lX21hcCBhbmQgdGhlIG1rdG1lX21hcF8qIGZ1bmN0aW9u cyBtYW5hZ2UgdGhlIG1hcHBpbmcNCj4gKyAqIG9mIHVzZXJzcGFjZSBLZXlzIHRvIGhhcmR3YXJl IEtleUlEcy4gVGhlc2UgYXJlIHVzZWQgYnkgdGhlIE1LVE1FIEtleQ0KDQpXaGF0IGFyZSAidXNl cnNwYWNlIEtleXMiIGFueXdheSBhbmQgd2h5IEtleSBhbmQgbm90IGtleT8NCg0KPiArICogU2Vy dmljZSBBUEkgYW5kIHRoZSBlbmNyeXB0X21wcm90ZWN0KCkgc3lzdGVtIGNhbGwuDQo+ICsgKi8N Cj4gKw0KPiArc3RydWN0IG1rdG1lX21hcHBpbmcgew0KPiArCXN0cnVjdCBtdXRleAlsb2NrOwkJ LyogcHJvdGVjdCB0aGlzIG1hcCAmIEhXIHN0YXRlICovDQo+ICsJdW5zaWduZWQgaW50CW1hcHBl ZF9rZXlpZHM7DQo+ICsJdm9pZAkJKmtleVtdOw0KPiArfTsNCg0KUGVyc29uYWxseSwgSSBwcmVm ZXIgbm90IHRvIGFsaWduIHN0cnVjdCBmaWVsZHMgKEkgZG8gYWxpZ24gZW51bXMNCmJlY2F1c2Ug dGhlcmUgaXQgbWFrZXMgbW9yZSBzZW5zZSkgYXMgb2Z0ZW4geW91IGVuZCB1cCByZWFsaWduaW5n DQpldmVyeXRoaW5nLg0KDQpEb2N1bWVudGF0aW9uIHdvdWxkIGJyaW5nIG1vcmUgY2xhcml0eS4g Rm9yIGV4YW1wbGUsIHdoYXQgZG9lcyBrZXlbXQ0KY29udGFpbiwgd2h5IHRoZXJlIGlzIGEgbG9j ayBhbmQgd2hhdCBtYXBwZWRfa2V5aWRzIGZpZWxkIGNvbnRhaW5zPw0KDQovSmFya2tvDQo=