From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) by kanga.kvack.org (Postfix) with ESMTP id 2175B8E0002 for ; Thu, 17 Jan 2019 17:16:51 -0500 (EST) Received: by mail-pg1-f199.google.com with SMTP id p4so7060790pgj.21 for ; Thu, 17 Jan 2019 14:16:51 -0800 (PST) Received: from mga04.intel.com (mga04.intel.com. [192.55.52.120]) by mx.google.com with ESMTPS id i2si2649835pgl.153.2019.01.17.14.16.49 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Jan 2019 14:16:49 -0800 (PST) From: "Edgecombe, Rick P" Subject: Re: [PATCH 14/17] mm: Make hibernate handle unmapped pages Date: Thu, 17 Jan 2019 22:16:47 +0000 Message-ID: References: <20190117003259.23141-1-rick.p.edgecombe@intel.com> <20190117003259.23141-15-rick.p.edgecombe@intel.com> <20190117093950.GA17930@amd> In-Reply-To: <20190117093950.GA17930@amd> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: "pavel@ucw.cz" Cc: "linux-kernel@vger.kernel.org" , "peterz@infradead.org" , "linux-integrity@vger.kernel.org" , "ard.biesheuvel@linaro.org" , "tglx@linutronix.de" , "linux-mm@kvack.org" , "nadav.amit@gmail.com" , "dave.hansen@linux.intel.com" , "Dock, Deneen T" , "linux-security-module@vger.kernel.org" , "x86@kernel.org" , "akpm@linux-foundation.org" , "hpa@zytor.com" , "kristen@linux.intel.com" , "mingo@redhat.com" , "linux_dti@icloud.com" , "luto@kernel.org" , "will.deacon@arm.com" , "bp@alien8.de" , "kernel-hardening@lists.openwall.com" , "rjw@rjwysocki.net" T24gVGh1LCAyMDE5LTAxLTE3IGF0IDEwOjM5ICswMTAwLCBQYXZlbCBNYWNoZWsgd3JvdGU6DQo+ IEhpIQ0KPiANCj4gPiBGb3IgYXJjaGl0ZWN0dXJlcyB3aXRoIENPTkZJR19BUkNIX0hBU19TRVRf QUxJQVMsIHBhZ2VzIGNhbiBiZSB1bm1hcHBlZA0KPiA+IGJyaWVmbHkgb24gdGhlIGRpcmVjdG1h cCwgZXZlbiB3aGVuIENPTkZJR19ERUJVR19QQUdFQUxMT0MgaXMgbm90DQo+ID4gY29uZmlndXJl ZC4NCj4gPiBTbyB0aGlzIGNoYW5nZXMga2VybmVsX21hcF9wYWdlcyBhbmQga2VybmVsX3BhZ2Vf cHJlc2VudCB0byBiZSBkZWZpbmVkIHdoZW4NCj4gPiBDT05GSUdfQVJDSF9IQVNfU0VUX0FMSUFT IGlzIGRlZmluZWQgYXMgd2VsbC4gSXQgYWxzbyBjaGFuZ2VzIHBsYWNlcw0KPiA+IChwYWdlX2Fs bG9jLmMpIHdoZXJlIHRob3NlIGZ1bmN0aW9ucyBhcmUgYXNzdW1lZCB0byBvbmx5IGJlIGltcGxl bWVudGVkIHdoZW4NCj4gPiBDT05GSUdfREVCVUdfUEFHRUFMTE9DIGlzIGRlZmluZWQuDQo+IA0K PiBXaGljaCBhcmNoaXRlY3R1cmVzIGFyZSB0aGF0Pw0KPiANCj4gU2hvdWxkIHRoaXMgYmUgbWVy Z2VkIHRvIHRoZSBwYXRjaCB3aGVyZSBIQVNfU0VUX0FMSUFTIGlzIGludHJvZHVjZWQ/IFdlDQo+ IGRvbid0IHdhbnQgYnJva2VuIGhpYmVybmF0aW9uIGluIGJldHdlZW4uLi4uDQpUaGFua3MgZm9y IHRha2luZyBhIGxvb2suIEl0IHdhcyBhZGRlZCBmb3IgeDg2IGZvciBwYXRjaCAxMyBpbiB0aGlz IHBhdGNoc2V0IGFuZA0KdGhlcmUgd2FzIGludGVyZXN0IGV4cHJlc3NlZCBmb3IgYWRkaW5nIGZv ciBhcm02NC4gSWYgeW91IGRpZG4ndCBnZXQgdGhlIHdob2xlDQpzZXQgYW5kIHdhbnQgdG8gc2Vl IGxldCBtZSBrbm93IGFuZCBJIGNhbiBzZW5kIGl0Lg0KDQo+IA0KPiA+IC0jaWZkZWYgQ09ORklH X0RFQlVHX1BBR0VBTExPQw0KPiA+ICBleHRlcm4gYm9vbCBfZGVidWdfcGFnZWFsbG9jX2VuYWJs ZWQ7DQo+ID4gLWV4dGVybiB2b2lkIF9fa2VybmVsX21hcF9wYWdlcyhzdHJ1Y3QgcGFnZSAqcGFn ZSwgaW50IG51bXBhZ2VzLCBpbnQNCj4gPiBlbmFibGUpOw0KPiA+ICANCj4gPiAgc3RhdGljIGlu bGluZSBib29sIGRlYnVnX3BhZ2VhbGxvY19lbmFibGVkKHZvaWQpDQo+ID4gIHsNCj4gPiAtCXJl dHVybiBfZGVidWdfcGFnZWFsbG9jX2VuYWJsZWQ7DQo+ID4gKwlyZXR1cm4gSVNfRU5BQkxFRChD T05GSUdfREVCVUdfUEFHRUFMTE9DKSAmJiBfZGVidWdfcGFnZWFsbG9jX2VuYWJsZWQ7DQo+ID4g IH0NCj4gDQo+IFRoaXMgd2lsbCBicmVhayBidWlsZCBBRkFJQ1QuIF9kZWJ1Z19wYWdlYWxsb2Nf ZW5hYmxlZCB2YXJpYWJsZSBkb2VzDQo+IG5vdCBleGlzdCBpbiAhQ09ORklHX0RFQlVHX1BBR0VB TExPQyBjYXNlLg0KPiANCj4gCQkJCQkJCQkJUGF2ZWwNCkFmdGVyIGFkZGluZyBpbiB0aGUgQ09O RklHX0FSQ0hfSEFTX1NFVF9BTElBUyBjb25kaXRpb24gdG8gdGhlIGlmZGVmcyBpbiB0aGlzDQph cmVhIGl0IGxvb2tlZCBhIGxpdHRsZSBoYXJkIHRvIHJlYWQgdG8gbWUsIHNvIEkgbW92ZWQgZGVi dWdfcGFnZWFsbG9jX2VuYWJsZWQNCmFuZCBleHRlcm4gYm9vbCBfZGVidWdfcGFnZWFsbG9jX2Vu YWJsZWQgb3V0c2lkZSB0byBtYWtlIGl0IGVhc2llci4gSSB0aGluayB5b3UNCmFyZSByaWdodCwg dGhlIGFjdHVhbCBub24tZXh0ZXJuIHZhcmlhYmxlIGNhbiBub3QgYmUgdGhlcmUsIGJ1dCB0aGUg cmVmZXJlbmNlDQpoZXJlIGdldHMgb3B0aW1pemVkIG91dCBpbiB0aGF0IGNhc2UuDQoNCkp1c3Qg ZG91YmxlIGNoZWNrZWQgYW5kIGl0IGJ1aWxkcyBmb3IgYm90aCBDT05GSUdfREVCVUdfUEFHRUFM TE9DPW4gYW5kDQpDT05GSUdfREVCVUdfUEFHRUFMTE9DPXkgZm9yIG1lLg0KDQpUaGFua3MsDQoN ClJpY2sNCg==