From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pasha Tatashin Subject: Re: [PATCH RFCv2 5/6] powerpc/powernv: hold device_hotplug_lock in memtrace_offline_pages() Date: Thu, 30 Aug 2018 19:38:26 +0000 Message-ID: <226aaaf7-7d1c-6f7b-5bf4-e6eb99862ebd@microsoft.com> References: <20180821104418.12710-1-david@redhat.com> <20180821104418.12710-6-david@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180821104418.12710-6-david@redhat.com> Content-Language: en-US Content-ID: <22514313AC9ABF4BA9891A4203E5CEF8@namprd21.prod.outlook.com> Sender: linux-kernel-owner@vger.kernel.org To: David Hildenbrand , "linux-mm@kvack.org" Cc: "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-acpi@vger.kernel.org" , "xen-devel@lists.xenproject.org" , "devel@linuxdriverproject.org" , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Rashmica Gupta , Balbir Singh , Michael Neuling List-Id: linux-acpi@vger.kernel.org UmV2aWV3ZWQtYnk6IFBhdmVsIFRhdGFzaGluIDxwYXZlbC50YXRhc2hpbkBtaWNyb3NvZnQuY29t Pg0KDQpPbiA4LzIxLzE4IDY6NDQgQU0sIERhdmlkIEhpbGRlbmJyYW5kIHdyb3RlOg0KPiBMZXQn cyBwZXJmb3JtIGFsbCBjaGVja2luZyArIG9mZmxpbmluZyArIHJlbW92aW5nIHVuZGVyDQo+IGRl dmljZV9ob3RwbHVnX2xvY2ssIHNvIG5vYm9keSBjYW4gbWVzcyB3aXRoIHRoZXNlIGRldmljZXMg dmlhDQo+IHN5c2ZzIGNvbmN1cnJlbnRseS4NCj4gDQo+IENjOiBCZW5qYW1pbiBIZXJyZW5zY2ht aWR0IDxiZW5oQGtlcm5lbC5jcmFzaGluZy5vcmc+DQo+IENjOiBQYXVsIE1hY2tlcnJhcyA8cGF1 bHVzQHNhbWJhLm9yZz4NCj4gQ2M6IE1pY2hhZWwgRWxsZXJtYW4gPG1wZUBlbGxlcm1hbi5pZC5h dT4NCj4gQ2M6IFJhc2htaWNhIEd1cHRhIDxyYXNobWljYS5nQGdtYWlsLmNvbT4NCj4gQ2M6IEJh bGJpciBTaW5naCA8YnNpbmdoYXJvcmFAZ21haWwuY29tPg0KPiBDYzogTWljaGFlbCBOZXVsaW5n IDxtaWtleUBuZXVsaW5nLm9yZz4NCj4gU2lnbmVkLW9mZi1ieTogRGF2aWQgSGlsZGVuYnJhbmQg PGRhdmlkQHJlZGhhdC5jb20+DQo+IC0tLQ0KPiAgYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9wb3dl cm52L21lbXRyYWNlLmMgfCAxMCArKysrKysrKy0tDQo+ICAxIGZpbGUgY2hhbmdlZCwgOCBpbnNl cnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQ0KPiANCj4gZGlmZiAtLWdpdCBhL2FyY2gvcG93ZXJw Yy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jIGIvYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9w b3dlcm52L21lbXRyYWNlLmMNCj4gaW5kZXggZWY3MTgxZDRmZTY4Li40NzNlNTk4NDJlYzUgMTAw NjQ0DQo+IC0tLSBhL2FyY2gvcG93ZXJwYy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jDQo+ ICsrKyBiL2FyY2gvcG93ZXJwYy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jDQo+IEBAIC03 NCw5ICs3NCwxMyBAQCBzdGF0aWMgYm9vbCBtZW10cmFjZV9vZmZsaW5lX3BhZ2VzKHUzMiBuaWQs IHU2NCBzdGFydF9wZm4sIHU2NCBucl9wYWdlcykNCj4gIHsNCj4gIAl1NjQgZW5kX3BmbiA9IHN0 YXJ0X3BmbiArIG5yX3BhZ2VzIC0gMTsNCj4gIA0KPiArCWxvY2tfZGV2aWNlX2hvdHBsdWcoKTsN Cj4gKw0KPiAgCWlmICh3YWxrX21lbW9yeV9yYW5nZShzdGFydF9wZm4sIGVuZF9wZm4sIE5VTEws DQo+IC0JICAgIGNoZWNrX21lbWJsb2NrX29ubGluZSkpDQo+ICsJICAgIGNoZWNrX21lbWJsb2Nr X29ubGluZSkpIHsNCj4gKwkJdW5sb2NrX2RldmljZV9ob3RwbHVnKCk7DQo+ICAJCXJldHVybiBm YWxzZTsNCj4gKwl9DQo+ICANCj4gIAl3YWxrX21lbW9yeV9yYW5nZShzdGFydF9wZm4sIGVuZF9w Zm4sICh2b2lkICopTUVNX0dPSU5HX09GRkxJTkUsDQo+ICAJCQkgIGNoYW5nZV9tZW1ibG9ja19z dGF0ZSk7DQo+IEBAIC04NCwxNCArODgsMTYgQEAgc3RhdGljIGJvb2wgbWVtdHJhY2Vfb2ZmbGlu ZV9wYWdlcyh1MzIgbmlkLCB1NjQgc3RhcnRfcGZuLCB1NjQgbnJfcGFnZXMpDQo+ICAJaWYgKG9m ZmxpbmVfcGFnZXMoc3RhcnRfcGZuLCBucl9wYWdlcykpIHsNCj4gIAkJd2Fsa19tZW1vcnlfcmFu Z2Uoc3RhcnRfcGZuLCBlbmRfcGZuLCAodm9pZCAqKU1FTV9PTkxJTkUsDQo+ICAJCQkJICBjaGFu Z2VfbWVtYmxvY2tfc3RhdGUpOw0KPiArCQl1bmxvY2tfZGV2aWNlX2hvdHBsdWcoKTsNCj4gIAkJ cmV0dXJuIGZhbHNlOw0KPiAgCX0NCj4gIA0KPiAgCXdhbGtfbWVtb3J5X3JhbmdlKHN0YXJ0X3Bm biwgZW5kX3BmbiwgKHZvaWQgKilNRU1fT0ZGTElORSwNCj4gIAkJCSAgY2hhbmdlX21lbWJsb2Nr X3N0YXRlKTsNCj4gIA0KPiAtCXJlbW92ZV9tZW1vcnkobmlkLCBzdGFydF9wZm4gPDwgUEFHRV9T SElGVCwgbnJfcGFnZXMgPDwgUEFHRV9TSElGVCk7DQo+ICsJX19yZW1vdmVfbWVtb3J5KG5pZCwg c3RhcnRfcGZuIDw8IFBBR0VfU0hJRlQsIG5yX3BhZ2VzIDw8IFBBR0VfU0hJRlQpOw0KPiAgDQo+ ICsJdW5sb2NrX2RldmljZV9ob3RwbHVnKCk7DQo+ICAJcmV0dXJuIHRydWU7DQo+ICB9DQo+ICAN Cj4g From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM04-BN3-obe.outbound.protection.outlook.com (mail-eopbgr680123.outbound.protection.outlook.com [40.107.68.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 421Xpw47F9zF37N for ; Fri, 31 Aug 2018 05:38:32 +1000 (AEST) From: Pasha Tatashin To: David Hildenbrand , "linux-mm@kvack.org" CC: "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-acpi@vger.kernel.org" , "xen-devel@lists.xenproject.org" , "devel@linuxdriverproject.org" , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Rashmica Gupta , Balbir Singh , Michael Neuling Subject: Re: [PATCH RFCv2 5/6] powerpc/powernv: hold device_hotplug_lock in memtrace_offline_pages() Date: Thu, 30 Aug 2018 19:38:26 +0000 Message-ID: <226aaaf7-7d1c-6f7b-5bf4-e6eb99862ebd@microsoft.com> References: <20180821104418.12710-1-david@redhat.com> <20180821104418.12710-6-david@redhat.com> In-Reply-To: <20180821104418.12710-6-david@redhat.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , UmV2aWV3ZWQtYnk6IFBhdmVsIFRhdGFzaGluIDxwYXZlbC50YXRhc2hpbkBtaWNyb3NvZnQuY29t Pg0KDQpPbiA4LzIxLzE4IDY6NDQgQU0sIERhdmlkIEhpbGRlbmJyYW5kIHdyb3RlOg0KPiBMZXQn cyBwZXJmb3JtIGFsbCBjaGVja2luZyArIG9mZmxpbmluZyArIHJlbW92aW5nIHVuZGVyDQo+IGRl dmljZV9ob3RwbHVnX2xvY2ssIHNvIG5vYm9keSBjYW4gbWVzcyB3aXRoIHRoZXNlIGRldmljZXMg dmlhDQo+IHN5c2ZzIGNvbmN1cnJlbnRseS4NCj4gDQo+IENjOiBCZW5qYW1pbiBIZXJyZW5zY2ht aWR0IDxiZW5oQGtlcm5lbC5jcmFzaGluZy5vcmc+DQo+IENjOiBQYXVsIE1hY2tlcnJhcyA8cGF1 bHVzQHNhbWJhLm9yZz4NCj4gQ2M6IE1pY2hhZWwgRWxsZXJtYW4gPG1wZUBlbGxlcm1hbi5pZC5h dT4NCj4gQ2M6IFJhc2htaWNhIEd1cHRhIDxyYXNobWljYS5nQGdtYWlsLmNvbT4NCj4gQ2M6IEJh bGJpciBTaW5naCA8YnNpbmdoYXJvcmFAZ21haWwuY29tPg0KPiBDYzogTWljaGFlbCBOZXVsaW5n IDxtaWtleUBuZXVsaW5nLm9yZz4NCj4gU2lnbmVkLW9mZi1ieTogRGF2aWQgSGlsZGVuYnJhbmQg PGRhdmlkQHJlZGhhdC5jb20+DQo+IC0tLQ0KPiAgYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9wb3dl cm52L21lbXRyYWNlLmMgfCAxMCArKysrKysrKy0tDQo+ICAxIGZpbGUgY2hhbmdlZCwgOCBpbnNl cnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQ0KPiANCj4gZGlmZiAtLWdpdCBhL2FyY2gvcG93ZXJw Yy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jIGIvYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9w b3dlcm52L21lbXRyYWNlLmMNCj4gaW5kZXggZWY3MTgxZDRmZTY4Li40NzNlNTk4NDJlYzUgMTAw NjQ0DQo+IC0tLSBhL2FyY2gvcG93ZXJwYy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jDQo+ ICsrKyBiL2FyY2gvcG93ZXJwYy9wbGF0Zm9ybXMvcG93ZXJudi9tZW10cmFjZS5jDQo+IEBAIC03 NCw5ICs3NCwxMyBAQCBzdGF0aWMgYm9vbCBtZW10cmFjZV9vZmZsaW5lX3BhZ2VzKHUzMiBuaWQs IHU2NCBzdGFydF9wZm4sIHU2NCBucl9wYWdlcykNCj4gIHsNCj4gIAl1NjQgZW5kX3BmbiA9IHN0 YXJ0X3BmbiArIG5yX3BhZ2VzIC0gMTsNCj4gIA0KPiArCWxvY2tfZGV2aWNlX2hvdHBsdWcoKTsN Cj4gKw0KPiAgCWlmICh3YWxrX21lbW9yeV9yYW5nZShzdGFydF9wZm4sIGVuZF9wZm4sIE5VTEws DQo+IC0JICAgIGNoZWNrX21lbWJsb2NrX29ubGluZSkpDQo+ICsJICAgIGNoZWNrX21lbWJsb2Nr X29ubGluZSkpIHsNCj4gKwkJdW5sb2NrX2RldmljZV9ob3RwbHVnKCk7DQo+ICAJCXJldHVybiBm YWxzZTsNCj4gKwl9DQo+ICANCj4gIAl3YWxrX21lbW9yeV9yYW5nZShzdGFydF9wZm4sIGVuZF9w Zm4sICh2b2lkICopTUVNX0dPSU5HX09GRkxJTkUsDQo+ICAJCQkgIGNoYW5nZV9tZW1ibG9ja19z dGF0ZSk7DQo+IEBAIC04NCwxNCArODgsMTYgQEAgc3RhdGljIGJvb2wgbWVtdHJhY2Vfb2ZmbGlu ZV9wYWdlcyh1MzIgbmlkLCB1NjQgc3RhcnRfcGZuLCB1NjQgbnJfcGFnZXMpDQo+ICAJaWYgKG9m ZmxpbmVfcGFnZXMoc3RhcnRfcGZuLCBucl9wYWdlcykpIHsNCj4gIAkJd2Fsa19tZW1vcnlfcmFu Z2Uoc3RhcnRfcGZuLCBlbmRfcGZuLCAodm9pZCAqKU1FTV9PTkxJTkUsDQo+ICAJCQkJICBjaGFu Z2VfbWVtYmxvY2tfc3RhdGUpOw0KPiArCQl1bmxvY2tfZGV2aWNlX2hvdHBsdWcoKTsNCj4gIAkJ cmV0dXJuIGZhbHNlOw0KPiAgCX0NCj4gIA0KPiAgCXdhbGtfbWVtb3J5X3JhbmdlKHN0YXJ0X3Bm biwgZW5kX3BmbiwgKHZvaWQgKilNRU1fT0ZGTElORSwNCj4gIAkJCSAgY2hhbmdlX21lbWJsb2Nr X3N0YXRlKTsNCj4gIA0KPiAtCXJlbW92ZV9tZW1vcnkobmlkLCBzdGFydF9wZm4gPDwgUEFHRV9T SElGVCwgbnJfcGFnZXMgPDwgUEFHRV9TSElGVCk7DQo+ICsJX19yZW1vdmVfbWVtb3J5KG5pZCwg c3RhcnRfcGZuIDw8IFBBR0VfU0hJRlQsIG5yX3BhZ2VzIDw8IFBBR0VfU0hJRlQpOw0KPiAgDQo+ ICsJdW5sb2NrX2RldmljZV9ob3RwbHVnKCk7DQo+ICAJcmV0dXJuIHRydWU7DQo+ICB9DQo+ICAN Cj4g