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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 2D1CBC433E0 for ; Fri, 22 May 2020 10:08:52 +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 EFECC206C3 for ; Fri, 22 May 2020 10:08:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EFECC206C3 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 DEBB411F4592F; Fri, 22 May 2020 03:05:14 -0700 (PDT) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=aneesh.kumar@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 828DD117AE4DB for ; Fri, 22 May 2020 03:05:12 -0700 (PDT) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 04MA397p131619; Fri, 22 May 2020 06:08:47 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3160mktfqj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 22 May 2020 06:08:47 -0400 Received: from m0098396.ppops.net (m0098396.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 04MA3IFP132696; Fri, 22 May 2020 06:08:47 -0400 Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 3160mktfpu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 22 May 2020 06:08:47 -0400 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 04MA5Imh015672; Fri, 22 May 2020 10:08:44 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma05fra.de.ibm.com with ESMTP id 313x4xk19p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 22 May 2020 10:08:44 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 04MA8gwZ42533016 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 22 May 2020 10:08:42 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 611864C052; Fri, 22 May 2020 10:08:42 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7E6864C04E; Fri, 22 May 2020 10:08:40 +0000 (GMT) Received: from [9.85.70.225] (unknown [9.85.70.225]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 22 May 2020 10:08:40 +0000 (GMT) Subject: Re: [PATCH v2 3/5] libnvdimm/nvdimm/flush: Allow architecture to override the flush barrier To: =?UTF-8?Q?Michal_Such=c3=a1nek?= , Mikulas Patocka References: <20200513034705.172983-3-aneesh.kumar@linux.ibm.com> <87v9kspk3x.fsf@linux.ibm.com> <87d070f2vs.fsf@linux.ibm.com> <20200522093127.GY25173@kitsune.suse.cz> From: "Aneesh Kumar K.V" Message-ID: <23e57565-be2a-a45c-f4d4-d8eca7262dea@linux.ibm.com> Date: Fri, 22 May 2020 15:38:39 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200522093127.GY25173@kitsune.suse.cz> Content-Language: en-US X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.676 definitions=2020-05-22_05:2020-05-22,2020-05-22 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 cotscore=-2147483648 priorityscore=1501 malwarescore=0 suspectscore=0 bulkscore=0 mlxscore=0 spamscore=0 impostorscore=0 mlxlogscore=999 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005220082 Message-ID-Hash: 4XQWSQYTP7Q4X6TYTKWUMCIYPUDFJZET X-Message-ID-Hash: 4XQWSQYTP7Q4X6TYTKWUMCIYPUDFJZET X-MailFrom: aneesh.kumar@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: Jan Kara , linux-nvdimm , alistair@popple.id.au, linuxppc-dev 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 T24gNS8yMi8yMCAzOjAxIFBNLCBNaWNoYWwgU3VjaMOhbmVrIHdyb3RlOg0KPiBPbiBUaHUsIE1h eSAyMSwgMjAyMCBhdCAwMjo1MjozMFBNIC0wNDAwLCBNaWt1bGFzIFBhdG9ja2Egd3JvdGU6DQo+ Pg0KPj4NCj4+IE9uIFRodSwgMjEgTWF5IDIwMjAsIERhbiBXaWxsaWFtcyB3cm90ZToNCj4+DQo+ Pj4gT24gVGh1LCBNYXkgMjEsIDIwMjAgYXQgMTA6MDMgQU0gQW5lZXNoIEt1bWFyIEsuVg0KPj4+ IDxhbmVlc2gua3VtYXJAbGludXguaWJtLmNvbT4gd3JvdGU6DQo+Pj4+DQo+Pj4+PiBNb3Zpbmcg b24gdG8gdGhlIHBhdGNoIGl0c2VsZi0tQW5lZXNoLCBoYXZlIHlvdSBhdWRpdGVkIG90aGVyIHBl cnNpc3RlbnQNCj4+Pj4+IG1lbW9yeSB1c2VycyBpbiB0aGUga2VybmVsPyAgRm9yIGV4YW1wbGUs IGRyaXZlcnMvbWQvZG0td3JpdGVjYWNoZS5jIGRvZXMNCj4+Pj4+IHRoaXM6DQo+Pj4+Pg0KPj4+ Pj4gc3RhdGljIHZvaWQgd3JpdGVjYWNoZV9jb21taXRfZmx1c2hlZChzdHJ1Y3QgZG1fd3JpdGVj YWNoZSAqd2MsIGJvb2wgd2FpdF9mb3JfaW9zKQ0KPj4+Pj4gew0KPj4+Pj4gICAgICAgIGlmIChX Q19NT0RFX1BNRU0od2MpKQ0KPj4+Pj4gICAgICAgICAgICAgICAgd21iKCk7IDw9PT09PT09PT09 DQo+Pj4+PiAgICAgICAgICAgZWxzZQ0KPj4+Pj4gICAgICAgICAgICAgICAgICAgc3NkX2NvbW1p dF9mbHVzaGVkKHdjLCB3YWl0X2Zvcl9pb3MpOw0KPj4+Pj4gfQ0KPj4+Pj4NCj4+Pj4+IEkgYmVs aWV2ZSB5b3UnbGwgbmVlZCB0byBtYWtlIG1vZGlmaWNhdGlvbnMgdGhlcmUuDQo+Pj4+Pg0KPj4+ Pg0KPj4+PiBDb3JyZWN0LiBUaGFua3MgZm9yIGNhdGNoaW5nIHRoYXQuDQo+Pj4+DQo+Pj4+DQo+ Pj4+IEkgZG9uJ3QgdW5kZXJzdGFuZCBkbSBtdWNoLCB3b25kZXJpbmcgaG93IHRoaXMgd2lsbCB3 b3JrIHdpdGgNCj4+Pj4gbm9uLXN5bmNocm9ub3VzIERBWCBkZXZpY2U/DQo+Pj4NCj4+PiBUaGF0 J3MgYSBnb29kIHBvaW50LiBETS13cml0ZWNhY2hlIG5lZWRzIHRvIGJlIGNvZ25pemFudCBvZiB0 aGluZ3MNCj4+PiBsaWtlIHZpcnRpby1wbWVtIHRoYXQgdmlvbGF0ZSB0aGUgcnVsZSB0aGF0IHBl cnNpc2VudCBtZW1vcnkgd3JpdGVzDQo+Pj4gY2FuIGJlIGZsdXNoZWQgYnkgQ1BVIGZ1bmN0aW9u cyByYXRoZXIgdGhhbiBjYWxsaW5nIGJhY2sgaW50byB0aGUNCj4+PiBkcml2ZXIuIEl0IHNlZW1z IHdlIG5lZWQgdG8gYWx3YXlzIG1ha2UgdGhlIGZsdXNoIGNhc2UgYSBkYXhfb3BlcmF0aW9uDQo+ Pj4gY2FsbGJhY2sgdG8gYWNjb3VudCBmb3IgdGhpcy4NCj4+DQo+PiBkbS13cml0ZWNhY2hlIGlz IG5vcm1hbGx5IHNpdHRpbmcgb24gdGhlIHRvcCBvZiBkbS1saW5lYXIsIHNvIGl0IHdvdWxkDQo+ PiBuZWVkIHRvIHBhc3MgdGhlIHdtYigpIGNhbGwgdGhyb3VnaCB0aGUgZG0gY29yZSBhbmQgZG0t bGluZWFyIHRhcmdldCAuLi4NCj4+IHRoYXQgd291bGQgc2xvdyBpdCBkb3duIC4uLiBJIHJlbWVt YmVyIHRoYXQgeW91IGFscmVhZHkgZGlkIGl0IHRoaXMgd2F5DQo+PiBzb21lIHRpbWVzIGFnbyBh bmQgdGhlbiByZW1vdmVkIGl0Lg0KPj4NCj4+IFdoYXQncyB0aGUgZXhhY3QgcHJvYmxlbSB3aXRo IFBPV0VSPyBDb3VsZCB0aGUgUE9XRVIgc3lzdGVtIGhhdmUgdHdvIHR5cGVzDQo+PiBvZiBwZXJz aXN0ZW50IG1lbW9yeSB0aGF0IG5lZWQgdHdvIGRpZmZlcmVudCB3YXlzIG9mIGZsdXNoaW5nPw0K PiANCj4gQXMgZmFyIGFzIEkgdW5kZXJzdGFuZCB0aGUgZGlzY3Vzc2lvbiBzbyBmYXINCj4gDQo+ ICAgLSBvbiBQT1dFUiAkb2xkaGFyZHdhcmUgdXNlcyAkb2xkaW5zdHJ1Y3Rpb24gdG8gZW5zdXJl IHBtZW0gY29uc2lzdGVuY3kNCj4gICAtIG9uIFBPV0VSICRuZXdoYXJkd2FyZSB1c2VzICRuZXdp bnN0cnVjdGlvbiB0byBlbnN1cmUgcG1lbSBjb25zaXN0ZW5jeQ0KPiAgICAgKGNvbXBhdGlibGUg d2l0aCAkb2xkaW5zdHJ1Y3Rpb24gb24gJG9sZGhhcmR3YXJlKQ0KDQpDb3JyZWN0Lg0KDQo+ICAg LSBvbiBzb21lIHBsYXRmb3JtcyBpbnN0ZWFkIG9mIGJhcnJpZXIgaW5zdHJ1Y3Rpb24gYSBjYWxs YmFjayBpbnRvIHRoZQ0KPiAgICAgZHJpdmVyIGlzIGlzc3VlZCB0byBlbnN1cmUgY29uc2lzdGVu Y3kgDQoNClRoaXMgaXMgdmlydGlvLXBtZW0gb25seSBhdCB0aGlzIHBvaW50IElJVUMuDQoNCg0K PiANCj4gTm9uZSBvZiB0aGlzIGlzIHJlZmxlY3RlZCBieSB0aGUgZG0gZHJpdmVyLg0KPiANCg0K LWFuZWVzaApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpM aW51eC1udmRpbW0gbWFpbGluZyBsaXN0IC0tIGxpbnV4LW52ZGltbUBsaXN0cy4wMS5vcmcKVG8g dW5zdWJzY3JpYmUgc2VuZCBhbiBlbWFpbCB0byBsaW51eC1udmRpbW0tbGVhdmVAbGlzdHMuMDEu b3JnCg==