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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 87CA8C3F2CD for ; Wed, 4 Mar 2020 14:26:20 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63D4320848 for ; Wed, 4 Mar 2020 14:26:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63D4320848 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id A001C10FC36C2; Wed, 4 Mar 2020 06:27:11 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=fbarrat@linux.ibm.com; receiver= Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 40A9810FC337F for ; Wed, 4 Mar 2020 06:27:09 -0800 (PST) Received: from pps.filterd (m0187473.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 024EMVkl136868 for ; Wed, 4 Mar 2020 09:26:17 -0500 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0a-001b2d01.pphosted.com with ESMTP id 2yfmg2ju0r-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 04 Mar 2020 09:26:16 -0500 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 4 Mar 2020 14:26:07 -0000 Received: from b06cxnps3075.portsmouth.uk.ibm.com (9.149.109.195) by e06smtp04.uk.ibm.com (192.168.101.134) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 4 Mar 2020 14:26:00 -0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 024EPwZ512648592 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 4 Mar 2020 14:25:58 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 93DBCAE04D; Wed, 4 Mar 2020 14:25:58 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8A97CAE045; Wed, 4 Mar 2020 14:25:57 +0000 (GMT) Received: from pic2.home (unknown [9.145.145.27]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 4 Mar 2020 14:25:57 +0000 (GMT) Subject: Re: [PATCH v3 22/27] powerpc/powernv/pmem: Implement the heartbeat command To: "Alastair D'Silva" , alastair@d-silva.org References: <20200221032720.33893-1-alastair@au1.ibm.com> <20200221032720.33893-23-alastair@au1.ibm.com> From: Frederic Barrat Date: Wed, 4 Mar 2020 15:25:57 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200221032720.33893-23-alastair@au1.ibm.com> Content-Language: en-US X-TM-AS-GCONF: 00 x-cbid: 20030414-0016-0000-0000-000002ED23C9 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20030414-0017-0000-0000-00003350725A Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-03-04_05:2020-03-04,2020-03-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 clxscore=1015 lowpriorityscore=0 malwarescore=0 adultscore=0 suspectscore=0 priorityscore=1501 spamscore=0 mlxscore=0 bulkscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003040109 Message-ID-Hash: WR27DNIIO363C5X3YJ4MH55IZLW44Q36 X-Message-ID-Hash: WR27DNIIO363C5X3YJ4MH55IZLW44Q36 X-MailFrom: fbarrat@linux.ibm.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: "Aneesh Kumar K . V" , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Andrew Donnellan , Arnd Bergmann , Greg Kroah-Hartman , Andrew Morton , Mauro Carvalho Chehab , "David S. Miller" , Rob Herring , Anton Blanchard , Krzysztof Kozlowski , Mahesh Salgaonkar , Madhavan Srinivasan , =?UTF-8?Q?C=c3=a9dric_Le_Goater?= , Anju T Sudhakar , Hari Bathini , Thomas Gleixner , Greg Kurz , Nicholas Piggin , Masahiro Yamada , Alexey Kardashevskiy , linux-kernel@vger.kernel.org, linuxppc-de v@lists.ozlabs.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: base64 DQoNCkxlIDIxLzAyLzIwMjAgw6AgMDQ6MjcsIEFsYXN0YWlyIEQnU2lsdmEgYSDDqWNyaXTCoDoN Cj4gRnJvbTogQWxhc3RhaXIgRCdTaWx2YSA8YWxhc3RhaXJAZC1zaWx2YS5vcmc+DQo+IA0KPiBU aGUgaGVhcnRiZWF0IGFkbWluIGNvbW1hbmQgaXMgYSBzaW1wbGUgYWRtaW4gY29tbWFuZCB0aGF0 IGV4ZXJjaXNlcw0KPiB0aGUgY29tbXVuaWNhdGlvbiBtZWNoYW5pc21zIHdpdGhpbiB0aGUgY29u dHJvbGxlci4NCj4gDQo+IFRoaXMgcGF0Y2ggaXNzdWVzIGEgaGVhcnRiZWF0IGNvbW1hbmQgdG8g dGhlIGNhcmQgZHVyaW5nIGluaXQgdG8gZW5zdXJlDQo+IHdlIGNhbiBjb21tdW5pY2F0ZSB3aXRo IHRoZSBjYXJkJ3MgY29udHJvbGxlci4NCj4gDQo+IFNpZ25lZC1vZmYtYnk6IEFsYXN0YWlyIEQn U2lsdmEgPGFsYXN0YWlyQGQtc2lsdmEub3JnPg0KPiAtLS0NCg0KDQpOb3RoaW5nIHRvIGFkZCBj b21wYXJlZCB0byB3aGF0IGhhcyBhbHJlYWR5IGJlZW4gY29tbWVudGVkIG9uIHByZXZpb3VzIA0K cGF0Y2hlcyAocmMgbm90IHNldCBpbiBwcm9iZSgpLCBoaWdoZXIgbGV2ZWwgZnVuY3Rpb24gdG8g ZXhlY3V0ZSBhZG1pbiANCmNvbW1hbmQgaW4gb25lIGNhbGwpLg0KDQogICBGcmVkDQoNCg0KDQo+ ICAgYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9wb3dlcm52L3BtZW0vb2N4bC5jIHwgNDMgKysrKysr KysrKysrKysrKysrKysrKw0KPiAgIDEgZmlsZSBjaGFuZ2VkLCA0MyBpbnNlcnRpb25zKCspDQo+ IA0KPiBkaWZmIC0tZ2l0IGEvYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9wb3dlcm52L3BtZW0vb2N4 bC5jIGIvYXJjaC9wb3dlcnBjL3BsYXRmb3Jtcy9wb3dlcm52L3BtZW0vb2N4bC5jDQo+IGluZGV4 IDA4MTg4M2E4MjQ3YS4uZTAxZjZmOWZjMTgwIDEwMDY0NA0KPiAtLS0gYS9hcmNoL3Bvd2VycGMv cGxhdGZvcm1zL3Bvd2VybnYvcG1lbS9vY3hsLmMNCj4gKysrIGIvYXJjaC9wb3dlcnBjL3BsYXRm b3Jtcy9wb3dlcm52L3BtZW0vb2N4bC5jDQo+IEBAIC0zMDYsNiArMzA2LDQ0IEBAIHN0YXRpYyBi b29sIGlzX3VzYWJsZShjb25zdCBzdHJ1Y3Qgb2N4bHBtZW0gKm9jeGxwbWVtLCBib29sIHZlcmJv c2UpDQo+ICAgCXJldHVybiB0cnVlOw0KPiAgIH0NCj4gICANCj4gKy8qKg0KPiArICogaGVhcnRi ZWF0KCkgLSBJc3N1ZSBhIGhlYXJ0YmVhdCBjb21tYW5kIHRvIHRoZSBjb250cm9sbGVyDQo+ICsg KiBAb2N4bHBtZW06IHRoZSBkZXZpY2UgbWV0YWRhdGENCj4gKyAqIFJldHVybjogMCBpZiB0aGUg Y29udHJvbGxlciByZXNwb25kZWQgY29ycmVjdGx5LCBuZWdhdGl2ZSBvbiBlcnJvcg0KPiArICov DQo+ICtzdGF0aWMgaW50IGhlYXJ0YmVhdChzdHJ1Y3Qgb2N4bHBtZW0gKm9jeGxwbWVtKQ0KPiAr ew0KPiArCWludCByYzsNCj4gKw0KPiArCW11dGV4X2xvY2soJm9jeGxwbWVtLT5hZG1pbl9jb21t YW5kLmxvY2spOw0KPiArDQo+ICsJcmMgPSBhZG1pbl9jb21tYW5kX3JlcXVlc3Qob2N4bHBtZW0s IEFETUlOX0NPTU1BTkRfSEVBUlRCRUFUKTsNCj4gKwlpZiAocmMpDQo+ICsJCWdvdG8gb3V0Ow0K PiArDQo+ICsJcmMgPSBhZG1pbl9jb21tYW5kX2V4ZWN1dGUob2N4bHBtZW0pOw0KPiArCWlmIChy YykNCj4gKwkJZ290byBvdXQ7DQo+ICsNCj4gKwlyYyA9IGFkbWluX2NvbW1hbmRfY29tcGxldGVf dGltZW91dChvY3hscG1lbSwgQURNSU5fQ09NTUFORF9IRUFSVEJFQVQpOw0KPiArCWlmIChyYyA8 IDApIHsNCj4gKwkJZGV2X2Vycigmb2N4bHBtZW0tPmRldiwgIkhlYXJ0YmVhdCB0aW1lb3V0XG4i KTsNCj4gKwkJZ290byBvdXQ7DQo+ICsJfQ0KPiArDQo+ICsJcmMgPSBhZG1pbl9yZXNwb25zZShv Y3hscG1lbSk7DQo+ICsJaWYgKHJjIDwgMCkNCj4gKwkJZ290byBvdXQ7DQo+ICsJaWYgKHJjICE9 IFNUQVRVU19TVUNDRVNTKQ0KPiArCQl3YXJuX3N0YXR1cyhvY3hscG1lbSwgIlVuZXhwZWN0ZWQg c3RhdHVzIGZyb20gaGVhcnRiZWF0IiwgcmMpOw0KPiArDQo+ICsJKHZvaWQpYWRtaW5fcmVzcG9u c2VfaGFuZGxlZChvY3hscG1lbSk7DQo+ICsNCj4gK291dDoNCj4gKwltdXRleF91bmxvY2soJm9j eGxwbWVtLT5hZG1pbl9jb21tYW5kLmxvY2spOw0KPiArCXJldHVybiByYzsNCj4gK30NCj4gKw0K PiAgIC8qKg0KPiAgICAqIGFsbG9jYXRlX21pbm9yKCkgLSBBbGxvY2F0ZSBhIG1pbm9yIG51bWJl ciB0byB1c2UgZm9yIGFuIE9wZW5DQVBJIHBtZW0gZGV2aWNlDQo+ICAgICogQG9jeGxwbWVtOiB0 aGUgZGV2aWNlIG1ldGFkYXRhDQo+IEBAIC0xNDU4LDYgKzE0OTYsMTEgQEAgc3RhdGljIGludCBw cm9iZShzdHJ1Y3QgcGNpX2RldiAqcGRldiwgY29uc3Qgc3RydWN0IHBjaV9kZXZpY2VfaWQgKmVu dCkNCj4gICAJCWdvdG8gZXJyOw0KPiAgIAl9DQo+ICAgDQo+ICsJaWYgKGhlYXJ0YmVhdChvY3hs cG1lbSkpIHsNCj4gKwkJZGV2X2VycigmcGRldi0+ZGV2LCAiSGVhcnRiZWF0IGZhaWxlZFxuIik7 DQo+ICsJCWdvdG8gZXJyOw0KPiArCX0NCj4gKw0KPiAgIAllbGFwc2VkID0gMDsNCj4gICAJdGlt ZW91dCA9IG9jeGxwbWVtLT5yZWFkaW5lc3NfdGltZW91dCArIG9jeGxwbWVtLT5tZW1vcnlfYXZh aWxhYmxlX3RpbWVvdXQ7DQo+ICAgCXdoaWxlICghaXNfdXNhYmxlKG9jeGxwbWVtLCBmYWxzZSkp IHsNCj4gDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpM aW51eC1udmRpbW0gbWFpbGluZyBsaXN0IC0tIGxpbnV4LW52ZGltbUBsaXN0cy4wMS5vcmcKVG8g dW5zdWJzY3JpYmUgc2VuZCBhbiBlbWFpbCB0byBsaW51eC1udmRpbW0tbGVhdmVAbGlzdHMuMDEu b3JnCg==