From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17F3EC4360F for ; Fri, 22 Mar 2019 20:31:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3C3821900 for ; Fri, 22 Mar 2019 20:31:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727770AbfCVUbU (ORCPT ); Fri, 22 Mar 2019 16:31:20 -0400 Received: from mga14.intel.com ([192.55.52.115]:55851 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726603AbfCVUbU (ORCPT ); Fri, 22 Mar 2019 16:31:20 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Mar 2019 13:31:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,256,1549958400"; d="scan'208";a="331141865" Received: from orsmsx103.amr.corp.intel.com ([10.22.225.130]) by fmsmga005.fm.intel.com with ESMTP; 22 Mar 2019 13:31:19 -0700 Received: from orsmsx116.amr.corp.intel.com ([169.254.7.78]) by ORSMSX103.amr.corp.intel.com ([169.254.5.129]) with mapi id 14.03.0415.000; Fri, 22 Mar 2019 13:31:18 -0700 From: "Xing, Cedric" To: Andy Lutomirski CC: Jarkko Sakkinen , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "linux-sgx@vger.kernel.org" , "akpm@linux-foundation.org" , "Hansen, Dave" , "Christopherson, Sean J" , "nhorman@redhat.com" , "npmccallum@redhat.com" , "Ayoun, Serge" , "Katz-zamir, Shay" , "Huang, Haitao" , "andriy.shevchenko@linux.intel.com" , "tglx@linutronix.de" , "Svahn, Kai" , "bp@alien8.de" , "josh@joshtriplett.org" , "Huang, Kai" , "rientjes@google.com" , "Dave Hansen" , Haitao Huang , Jethro Beekman , "Dr . Greg Wettstein" Subject: RE: [PATCH v19,RESEND 24/27] x86/vdso: Add __vdso_sgx_enter_enclave() to wrap SGX enclave transitions Thread-Topic: [PATCH v19,RESEND 24/27] x86/vdso: Add __vdso_sgx_enter_enclave() to wrap SGX enclave transitions Thread-Index: AQHU3zmquZHDGSY4XUWmggeyxtSmi6YU12fwgAB7nID//4szkIAB7KQAgAEyn5A= Date: Fri, 22 Mar 2019 20:31:17 +0000 Message-ID: <960B34DE67B9E140824F1DCDEC400C0F4E85DA80@ORSMSX116.amr.corp.intel.com> References: <20190320162119.4469-1-jarkko.sakkinen@linux.intel.com> <20190320162119.4469-25-jarkko.sakkinen@linux.intel.com> <960B34DE67B9E140824F1DCDEC400C0F4E85C484@ORSMSX116.amr.corp.intel.com> <960B34DE67B9E140824F1DCDEC400C0F4E85C53D@ORSMSX116.amr.corp.intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiMTY3MDdhMjQtNmM3Ni00MmQ0LTlkMjUtMjRkZmVlZTFlNjAwIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoiSzJSOHVPTThZRXBQaWNOdW9FTW1yb09KK1hIVHEyQ09JUjdkb2VOMERncVhackFlT2pLQzdydkdXUzRJRzVSRyJ9 x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.0.400.15 dlp-reaction: no-action x-originating-ip: [10.22.254.139] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGkgQW5keSwNCg0KPiA+ID4gIC0gSXQgd2lsbCBtYWtlIGl0IHF1aXRlIHVucGxlYXNhbnQgdG8g Y2FsbCBpbnRvIGFuIGVuY2xhdmUgaW4gYQ0KPiA+ID4gY29yb3V0aW5lIGRlcGVuZGluZyBvbiBo b3cgdGhlIGhvc3QgdW50cnVzdGVkIHJ1bnRpbWUgaW1wbGVtZW50cw0KPiA+ID4gY29yb3V0aW5l cy4NCj4gPg0KPiA+IEknbSBub3Qgc3VyZSB3aGF0IHlvdSBhcmUgcmVmZXJyaW5nIHRvIGJ5ICJj b3JvdXRpbmUiLiBCdXQgdGhpcyB2RFNPDQo+IEFQSSB3aWxsIGJlIChleHBlY3RlZCB0byBiZSkg dGhlIG9ubHkgcm91dGluZSB0aGF0IGFjdHVhbGx5IGNhbGxzIGludG8NCj4gYW4gZW5jbGF2ZS4g SXNuJ3QgdGhhdCBjb3JyZWN0Pw0KPiANCj4gSSBtZWFuIHVzZSBpbiBsYW5ndWFnZXMgYW5kIHJ1 bnRpbWVzIHRoYXQgYWxsb3cgYSBmdW5jdGlvbiBhbmQgaXRzDQo+IGNhbGxlZXMgdG8gcGF1c2Ug YW5kIHRoZW4gcmVzdW1lIGxhdGVyLiAgU29tZXRoaW5nIGxpa2UgKHBzZXVkb2NvZGUsDQo+IG9i dmlvdXNseSk6DQo+IA0KPiB2b2lkIGludm9rZV90aGVfZW5jbGF2ZSgpDQo+IHsNCj4gICBkb19l ZW50ZXJfdGhyb3VnaF92ZHNvKCk7DQo+IH0NCj4gDQo+IHZvaWQgc29tZV9vY2FsbF9oYW5kbGVy KHZvaWQgKnB0cikNCj4gew0KPiAgIHlpZWxkOw0KPiB9DQoNClRoYW5rIHlvdSB2ZXJ5IG11Y2gg Zm9yIHlvdXIgZGV0YWlsZWQgZXhwbGFuYXRpb24uIFRoaXMgbG9va3MgbW9yZSBhYm91dCB3aGV0 aGVyIG9yIG5vdCB0aGUgdW50cnVzdGVkIHN0YWNrIHdpbGwgcmVtYWluIHZhbGlkIGFmdGVyIEVF WElULCB0aGFuIHdoZXRoZXIgdGhlIG9jYWxsIHdpbGwgYmUgcGF1c2VkIG9yIG5vdC4gQXMgaW4g eW91ciBleGFtcGxlIGNvZGUgYWJvdmUsIGEgcHJvYmxlbSBtYXkgb2NjdXIgaWYgInlpZWxkIiBk ZXN0cm95cyB0aGUgc3RhY2sgb2YgaXRzIGNhbGxlci4gQnV0IGlzIHRoYXQgYSBjb21tb24gYmVo YXZpb3Igb2YgInlpZWxkIiAob3IgYW55IHNjaGVkdWxlciBhdCBhbGwpPyANCg0KWW91ciBwb2lu dCBpcyB3ZWxsIHJlY2VpdmVkIHRob3VnaCAtIE5vdCBldmVyeSBlbmNsYXZlIGNhbi9zaGFsbCBh c3N1bWUgZXhpc3RlbmNlIG9yIHNpemUgb2YgYW4gdW50cnVzdGVkIHN0YWNrLiBUaGVyZWZvcmUg SSd2ZSBtYWRlIHN1cmUgbXkgcHJvcG9zYWwgd2lsbCB3b3JrIG5vIG1hdHRlciB0aGUgZW5jbGF2 ZSB0b3VjaGVzIHRoZSB1bnRydXN0ZWQgc3RhY2sgb3Igbm90Lg0KDQo+IA0KPiBJZiB0aGUgZW5j bGF2ZSBoYXMgcHRyIHBvaW50aW5nIHRvIHRoZSB1bnRydXN0ZWQgc3RhY2ssIHRoZW4gdGhpcyBn ZXRzDQo+IHF1aXRlIGF3a3dhcmQgZm9yIHRoZSBydW50aW1lIHRvIGhhbmRsZSBlZmZpY2llbnRs eS4gIElNTyBhIG11Y2ggbmljZXINCj4gYXBwcm9hY2ggd291bGQgYmU6DQo+IA0KPiB2b2lkIGlu dm9rZV90aGVfZW5jbGF2ZSgpDQo+IHsNCj4gICBjaGFyIGJ1ZmZlclsxMDI0XTsNCj4gICB3aGls ZSAodHJ1ZSkNCj4gICB7DQo+ICAgICBlZW50ZXIgKHRocm91Z2ggdmRzbyk7DQo+ICAgICBpZiAo ZXhpdCB3YXMgYW4gb2NhbGwgcmVxdWVzdCkgew0KPiAgICAgICBzb21lX29jYWxsX2hhbmRsZXIo YnVmZmVyKTsNCj4gICAgIH0NCj4gICB9DQo+IH0NCj4gDQo+IEFuZCBub3cgdGhlcmUgaXMgbm90 aGluZyBmdW5ueSBoYXBwZW5pbmcgYmVoaW5kIHRoZSBydW50aW1lJ3MgYmFjayB3aGVuDQo+IHNv bWVfb2NhbGxfaGFuZGxlciB0cmllcyB0byB5aWVsZC4NCg0KQWdyZWVkLiANCg0KSW4gZmFjdCwg TXIuIENocmlzdG9waGVyc29uJ3MgQVBJIGNvdWxkIGJlIGltcGxlbWVudGVkIHVzaW5nIG1pbmUg YXMgYSBzdWJyb3V0aW5lIChwbGVhc2Ugc2VlIGJlbG93KS4gU28geW91ciAibmljZXIgYXBwcm9h Y2giIHdpbGwgY29udGludWUgdG8gd29yayBhcyBsb25nIGFzIGl0IHdvcmtzIHdpdGggY3VycmVu dCBwYXRjaC4gSG93ZXZlciwgcGxlYXNlIGtlZXAgaW4gbWluZCB0aGF0IHlvdXIgIm5pY2VyIiBh cHByb2FjaCBkb2Vzbid0IGhhdmUgdG8gYmUgdGhlICJvbmx5IiBhcHByb2FjaC4NCg0KVGhlIGNv ZGUgc25pcHBldCBiZWxvdyBzaG93cyBhbiBlcXVpdmFsZW50IGltcGxlbWVudGF0aW9uIG9mIE1y LiBDaHJpc3RvcGhlcnNvbidzIEFQSSB1c2luZyBtaW5lIGFzIGEgc3Vicm91dGluZSwgZXhjZXB0 IHRoYXQgUkJQIGNhbm5vdCBiZSB1c2VkIGFzIGEgcGFyYW1ldGVyIHRvIHRoZSBlbmNsYXZlIGJl Y2F1c2UgaXQgd2lsbCBiZSBvdmVyd3JpdHRlbiBiZWZvcmUgRUVOVEVSLiBUbyBkaXN0aW5ndWlz aCBoaXMgQVBJIGFuZCBtaW5lLCB0aGV5IGFyZSByZW5hbWVkIHRvIF9fdmRzb19zZ3hfZW50ZXJf ZW5jbGF2ZV9DaHJpc3RvcGhlcnNvbiBhbmQgX192ZHNvX3NneF9lbnRlcl9lbmNsYXZlX1hpbmcs IHJlc3BlY3RpdmVseS4gDQoNCl9fdmRzb19zZ3hfZW50ZXJfZW5jbGF2ZV9DaHJpc3RvcGhlcnNv bjoNCiAgICAgICAgcHVzaCAgICAkMCAgICAgIC8qIE5vICJleGl0IGNhbGxiYWNrIiBwcm92aWRl ZCAqLw0KICAgICAgICBwdXNoICAgICVyY3ggICAgLyogT3B0aW9uYWwgcG9pbnRlciB0byAnc3Ry dWN0IHNneF9lbmNsYXZlX2V4Y2VwdGlvbicgKi8NCiAgICAgICAgcHVzaCAgICAlcmJ4ICAgIC8q IFRDUyAqLw0KICAgICAgICBjYWxsICAgIF9fdmRzb19zZ3hfZW50ZXJfZW5jbGF2ZV9YaW5nDQog ICAgICAgIGFkZCAgICAgJDI0LCAlcnNwDQogICAgICAgIHJldA0KDQpUaGFua3MhDQoNCi1DZWRy aWMNCg==