From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id C48486B0005 for ; Thu, 26 Apr 2018 12:21:27 -0400 (EDT) Received: by mail-pf0-f197.google.com with SMTP id c85so19108663pfb.12 for ; Thu, 26 Apr 2018 09:21:27 -0700 (PDT) Received: from g2t2354.austin.hpe.com (g2t2354.austin.hpe.com. [15.233.44.27]) by mx.google.com with ESMTPS id n28si8066278pfh.210.2018.04.26.09.21.25 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Apr 2018 09:21:26 -0700 (PDT) From: "Kani, Toshi" Subject: Re: [PATCH v2 2/2] x86/mm: implement free pmd/pte page interfaces Date: Thu, 26 Apr 2018 16:21:19 +0000 Message-ID: <1524759629.2693.465.camel@hpe.com> References: <20180314180155.19492-1-toshi.kani@hpe.com> <20180314180155.19492-3-toshi.kani@hpe.com> <20180426141926.GN15462@8bytes.org> In-Reply-To: <20180426141926.GN15462@8bytes.org> 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: "joro@8bytes.org" Cc: "linux-kernel@vger.kernel.org" , "bp@suse.de" , "tglx@linutronix.de" , "guohanjun@huawei.com" , "willy@infradead.org" , "wxf.wang@hisilicon.com" , "stable@vger.kernel.org" , "linux-mm@kvack.org" , "x86@kernel.org" , "akpm@linux-foundation.org" , "hpa@zytor.com" , "catalin.marinas@arm.com" , "mingo@redhat.com" , "will.deacon@arm.com" , "Hocko, Michal" , "cpandya@codeaurora.org" , "linux-arm-kernel@lists.infradead.org" T24gVGh1LCAyMDE4LTA0LTI2IGF0IDE2OjE5ICswMjAwLCBKb2VyZyBSb2VkZWwgd3JvdGU6DQo+ IEhpIFRvc2hpLCBBbmRyZXcsDQo+IA0KPiB0aGlzIHBhdGNoKC1zZXQpIGlzIGJyb2tlbiBpbiBz ZXZlcmFsIHdheXMsIHBsZWFzZSBzZWUgYmVsb3cuDQo+IA0KPiBPbiBXZWQsIE1hciAxNCwgMjAx OCBhdCAxMjowMTo1NVBNIC0wNjAwLCBUb3NoaSBLYW5pIHdyb3RlOg0KPiA+IEltcGxlbWVudCBw dWRfZnJlZV9wbWRfcGFnZSgpIGFuZCBwbWRfZnJlZV9wdGVfcGFnZSgpIG9uIHg4Niwgd2hpY2gN Cj4gPiBjbGVhciBhIGdpdmVuIHB1ZC9wbWQgZW50cnkgYW5kIGZyZWUgdXAgbG93ZXIgbGV2ZWwg cGFnZSB0YWJsZShzKS4NCj4gPiBBZGRyZXNzIHJhbmdlIGFzc29jaWF0ZWQgd2l0aCB0aGUgcHVk L3BtZCBlbnRyeSBtdXN0IGhhdmUgYmVlbiBwdXJnZWQNCj4gPiBieSBJTlZMUEcuDQo+IA0KPiBB biBJTlZMUEcgYmVmb3JlIGFjdHVhbGx5IHVubWFwcGluZyB0aGUgcGFnZSBpcyB1c2VsZXNzLCBh cyBvdGhlciBjb3Jlcw0KPiBvciBldmVuIHNwZWN1bGF0aXZlIGluc3RydWN0aW9uIGV4ZWN1dGlv biBjYW4gYnJpbmcgdGhlIFRMQiBlbnRyeSBiYWNrDQo+IGJlZm9yZSB0aGUgY29kZSBhY3R1YWxs eSB1bm1hcHMgdGhlIHBhZ2UuDQoNCkhpIEpvZXJnLA0KDQpBbGwgcGFnZXMgdW5kZXIgdGhlIHBt ZCBoYWQgYmVlbiB1bm1hcHBlZCBhbmQgdGhlbiBsYXp5IFRMQiBwdXJnZWQgd2l0aA0KSU5WTFBH IGJlZm9yZSBjb21pbmcgdG8gdGhpcyBjb2RlIHBhdGguICBTcGVjdWxhdGlvbiBpcyBub3QgYWxs b3dlZCB0bw0KcGFnZXMgd2l0aG91dCBtYXBwaW5nLiAgDQoNCj4gPiAgaW50IHB1ZF9mcmVlX3Bt ZF9wYWdlKHB1ZF90ICpwdWQpDQo+ID4gIHsNCj4gPiAtCXJldHVybiBwdWRfbm9uZSgqcHVkKTsN Cj4gPiArCXBtZF90ICpwbWQ7DQo+ID4gKwlpbnQgaTsNCj4gPiArDQo+ID4gKwlpZiAocHVkX25v bmUoKnB1ZCkpDQo+ID4gKwkJcmV0dXJuIDE7DQo+ID4gKw0KPiA+ICsJcG1kID0gKHBtZF90ICop cHVkX3BhZ2VfdmFkZHIoKnB1ZCk7DQo+ID4gKw0KPiA+ICsJZm9yIChpID0gMDsgaSA8IFBUUlNf UEVSX1BNRDsgaSsrKQ0KPiA+ICsJCWlmICghcG1kX2ZyZWVfcHRlX3BhZ2UoJnBtZFtpXSkpDQo+ ID4gKwkJCXJldHVybiAwOw0KPiA+ICsNCj4gPiArCXB1ZF9jbGVhcihwdWQpOw0KPiANCj4gVExC IGZsdXNoIG5lZWRlZCBoZXJlLCBiZWZvcmUgdGhlIHBhZ2UgaXMgZnJlZWQuDQo+IA0KPiA+ICsJ ZnJlZV9wYWdlKCh1bnNpZ25lZCBsb25nKXBtZCk7DQo+ID4gKw0KPiA+ICsJcmV0dXJuIDE7DQo+ ID4gIH0NCj4gPiAgDQo+ID4gIC8qKg0KPiA+IEBAIC03MjQsNiArNzM5LDE1IEBAIGludCBwdWRf ZnJlZV9wbWRfcGFnZShwdWRfdCAqcHVkKQ0KPiA+ICAgKi8NCj4gPiAgaW50IHBtZF9mcmVlX3B0 ZV9wYWdlKHBtZF90ICpwbWQpDQo+ID4gIHsNCj4gPiAtCXJldHVybiBwbWRfbm9uZSgqcG1kKTsN Cj4gPiArCXB0ZV90ICpwdGU7DQo+ID4gKw0KPiA+ICsJaWYgKHBtZF9ub25lKCpwbWQpKQ0KPiA+ ICsJCXJldHVybiAxOw0KPiA+ICsNCj4gPiArCXB0ZSA9IChwdGVfdCAqKXBtZF9wYWdlX3ZhZGRy KCpwbWQpOw0KPiA+ICsJcG1kX2NsZWFyKHBtZCk7DQo+IA0KPiBTYW1lIGhlcmUsIFRMQiBmbHVz aCBuZWVkZWQuDQo+IA0KPiBGdXJ0aGVyIHRoaXMgbmVlZHMgc3luY2hyb25pemF0aW9uIHdpdGgg b3RoZXIgcGFnZS10YWJsZXMgaW4gdGhlIHN5c3RlbQ0KPiB3aGVuIHRoZSBrZXJuZWwgUE1EcyBh cmUgbm90IHNoYXJlZCBiZXR3ZWVuIHByb2Nlc3Nlcy4gSW4geDg2LTMyIHdpdGgNCj4gUEFFIHRo aXMgY2F1c2VzIGEgQlVHX09OKCkgYmVpbmcgdHJpZ2dlcmVkIGF0IGFyY2gveDg2L21tL2ZhdWx0 LmM6MjY4DQo+IGJlY2F1c2UgdGhlIHBhZ2UtdGFibGVzIGFyZSBub3QgY29ycmVjdGx5IHN5bmNo cm9uaXplZC4NCg0KSSB0aGluayB0aGlzIGlzIGFuIGlzc3VlIHdpdGggcG1kIG1hcHBpbmcgc3Vw cG9ydCBvbiB4ODYtMzItUEFFLCBub3QNCndpdGggdGhpcyBwYXRjaC4gIEkgdGhpbmsgdGhlIGNv ZGUgbmVlZGVkIHRvIGJlIHVwZGF0ZWQgdG8gc3luYyBhdCB0aGUNCnB1ZCBsZXZlbC4NCg0KVGhh bmtzLA0KLVRvc2hpDQo=