From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f70.google.com (mail-pl0-f70.google.com [209.85.160.70]) by kanga.kvack.org (Postfix) with ESMTP id A49B928027E for ; Fri, 5 Jan 2018 17:16:05 -0500 (EST) Received: by mail-pl0-f70.google.com with SMTP id 31so3872630plk.20 for ; Fri, 05 Jan 2018 14:16:05 -0800 (PST) Received: from g2t2353.austin.hpe.com (g2t2353.austin.hpe.com. [15.233.44.26]) by mx.google.com with ESMTPS id c30si4076180pgn.357.2018.01.05.14.16.03 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 05 Jan 2018 14:16:04 -0800 (PST) From: "Kani, Toshi" Subject: Re: [RFC patch] ioremap: don't set up huge I/O mappings when p4d/pud/pmd is zero Date: Fri, 5 Jan 2018 22:15:57 +0000 Message-ID: <1515193319.2108.24.camel@hpe.com> References: <1514460261-65222-1-git-send-email-guohanjun@huawei.com> In-Reply-To: <1514460261-65222-1-git-send-email-guohanjun@huawei.com> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: <15BE780802C69043B7029400C0B34517@NAMPRD84.PROD.OUTLOOK.COM> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "guohanjun@huawei.com" Cc: "linuxarm@huawei.com" , "linux-mm@kvack.org" , "wxf.wang@hisilicon.com" , "akpm@linux-foundation.org" , "mark.rutland@arm.com" , "catalin.marinas@arm.com" , "will.deacon@arm.com" , "Hocko, Michal" , "hanjun.guo@linaro.org" T24gVGh1LCAyMDE3LTEyLTI4IGF0IDE5OjI0ICswODAwLCBIYW5qdW4gR3VvIHdyb3RlOg0KPiBG cm9tOiBIYW5qdW4gR3VvIDxoYW5qdW4uZ3VvQGxpbmFyby5vcmc+DQo+IA0KPiBXaGVuIHdlIHVz aW5nIGlvdW5tYXAoKSB0byBmcmVlIHRoZSA0SyBtYXBwaW5nLCBpdCBqdXN0IGNsZWFyIHRoZSBQ VEVzDQo+IGJ1dCBsZWF2ZSBQNEQvUFVEL1BNRCB1bmNoYW5nZWQsIGFsc28gd2lsbCBub3QgZnJl ZSB0aGUgbWVtb3J5IG9mIHBhZ2UNCj4gdGFibGVzLg0KPiANCj4gVGhpcyB3aWxsIGNhdXNlIGlz c3VlcyBvbiBBUk02NCBwbGF0Zm9ybSAobm90IHN1cmUgaWYgb3RoZXIgYXJjaHMgaGF2ZQ0KPiB0 aGUgc2FtZSBpc3N1ZSkgZm9yIHRoaXMgY2FzZToNCj4gDQo+IDEuIGlvcmVtYXAgYSA0SyBzaXpl LCB2YWxpZCBwYWdlIHRhYmxlIHdpbGwgYnVpbGQsDQo+IDIuIGlvdW5tYXAgaXQsIHB0ZTAgd2ls bCBzZXQgdG8gMDsNCj4gMy4gaW9yZW1hcCB0aGUgc2FtZSBhZGRyZXNzIHdpdGggMk0gc2l6ZSwg cGdkL3BtZCBpcyB1bmNoYW5nZWQsDQo+ICAgIHRoZW4gc2V0IHRoZSBhIG5ldyB2YWx1ZSBmb3Ig cG1kOw0KPiA0LiBwdGUwIGlzIGxlYWtlZDsNCj4gNS4gQ1BVIG1heSBtZWV0IGV4Y2VwdGlvbiBi ZWNhdXNlIHRoZSBvbGQgcG1kIGlzIHN0aWxsIGluIFRMQiwNCj4gICAgd2hpY2ggd2lsbCBsZWFk IHRvIGtlcm5lbCBwYW5pYy4NCj4gDQo+IEZpeCBpdCBieSBza2lwIHNldHRpbmcgdXAgdGhlIGh1 Z2UgSS9PIG1hcHBpbmdzIHdoZW4gcDRkL3B1ZC9wbWQgaXMNCj4gemVyby4NCg0KSGkgSGFuanVu LA0KDQpJIHRlc3RlZCB0aGUgYWJvdmUgc3RlcHMgb24gbXkgeDg2IGJveCwgYnV0IHdhcyBub3Qg YWJsZSB0byByZXByb2R1Y2UNCnlvdXIga2VybmVsIHBhbmljLiAgT24geDg2LCBhIDRLIHZhZGRy IGdldHMgYWxsb2NhdGVkIGZyb20gYSBzbWFsbA0KZnJhZ21lbnRlZCBmcmVlIHJhbmdlLCB3aGVy ZWFzIGEgMk1CIHZhZGRyIGlzIGZyb20gYSBsYXJnZXIgZnJlZSByYW5nZS4gDQpUaGVpciBhZGRy cyBoYXZlIGRpZmZlcmVudCBhbGlnbm1lbnRzICg0S0IgJiAyTUIpIGFzIHdlbGwuICBTbywgdGhl DQpzdGVwcyBkaWQgbm90IGxlYWQgdG8gdXNlIGEgc2FtZSBwbWQgZW50cnkuDQoNCkhvd2V2ZXIs IEkgYWdyZWUgdGhhdCB6ZXJvJ2QgcHRlIGVudHJpZXMgd2lsbCBiZSBsZWFrZWQgd2hlbiBhIHBt ZCBtYXANCmlzIHNldCBpZiB0aGV5IGFyZSBwcmVzZW50IHVuZGVyIHRoZSBwbWQuDQoNCkkgYWxz byB0ZXN0ZWQgeW91ciBwYXRjaCBvbiBteSB4ODYgYm94LiAgVW5mb3J0dW5hdGVseSwgaXQgZWZm ZWN0aXZlbHkNCmRpc2FibGVkIDJNQiBtYXBwaW5ncy4gIFdoaWxlIGEgMk1CIHZhZGRyIGdldHMg YWxsb2NhdGVkIGZyb20gYSBsYXJnZXINCmZyZWUgcmFuZ2UsIGl0IHNpbGwgY29tZXMgZnJvbSBh IGZyZWUgcmFuZ2UgY292ZXJlZCBieSB6ZXJvJ2QgcHRlDQplbnRyaWVzLiAgU28sIGl0IGVuZHMg dXAgd2l0aCA0S0IgbWFwcGluZ3Mgd2l0aCB5b3VyIGNoYW5nZXMuDQoNCkkgdGhpbmsgd2UgbmVl ZCB0byBjb21lIHVwIHdpdGggb3RoZXIgYXBwcm9hY2guDQpUaGFua3MsDQotVG9zaGkNCg== -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org