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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 237BDC43331 for ; Thu, 7 Nov 2019 22:57:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D5C1C2178F for ; Thu, 7 Nov 2019 22:57:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="O8mwsL5E" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725928AbfKGW5E (ORCPT ); Thu, 7 Nov 2019 17:57:04 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:60884 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725912AbfKGW5E (ORCPT ); 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Thu, 07 Nov 2019 22:55:01 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xA7MsD57138401; Thu, 7 Nov 2019 22:55:01 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 2w41wb0f8s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2019 22:55:01 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id xA7Msu67017548; Thu, 7 Nov 2019 22:54:56 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 07 Nov 2019 14:54:56 -0800 Subject: Re: [PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert To: Jason Gunthorpe Cc: "linux-mm@kvack.org" , Jerome Glisse , Ralph Campbell , John Hubbard , "Felix.Kuehling@amd.com" , "linux-rdma@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "amd-gfx@lists.freedesktop.org" , Alex Deucher , Ben Skeggs , =?UTF-8?Q?Christian_K=c3=b6nig?= , David Zhou , Dennis Dalessandro , Juergen Gross , Mike Marciniszyn , Oleksandr Andrushchenko , Petr Cvek , Stefano Stabellini , "nouveau@lists.freedesktop.org" , "xen-devel@lists.xenproject.org" , Christoph Hellwig References: <20191028201032.6352-1-jgg@ziepe.ca> <20191028201032.6352-10-jgg@ziepe.ca> <3938b588-c6c5-3bd1-8ea9-47e4d5b2045c@oracle.com> <20191105023108.GN22766@mellanox.com> <20191107203629.GF6730@ziepe.ca> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; prefer-encrypt=mutual; keydata= mQINBFH8CgsBEAC0KiOi9siOvlXatK2xX99e/J3OvApoYWjieVQ9232Eb7GzCWrItCzP8FUV PQg8rMsSd0OzIvvjbEAvaWLlbs8wa3MtVLysHY/DfqRK9Zvr/RgrsYC6ukOB7igy2PGqZd+M MDnSmVzik0sPvB6xPV7QyFsykEgpnHbvdZAUy/vyys8xgT0PVYR5hyvhyf6VIfGuvqIsvJw5 C8+P71CHI+U/IhsKrLrsiYHpAhQkw+Zvyeml6XSi5w4LXDbF+3oholKYCkPwxmGdK8MUIdkM d7iYdKqiP4W6FKQou/lC3jvOceGupEoDV9botSWEIIlKdtm6C4GfL45RD8V4B9iy24JHPlom woVWc0xBZboQguhauQqrBFooHO3roEeM1pxXjLUbDtH4t3SAI3gt4dpSyT3EvzhyNQVVIxj2 FXnIChrYxR6S0ijSqUKO0cAduenhBrpYbz9qFcB/GyxD+ZWY7OgQKHUZMWapx5bHGQ8bUZz2 SfjZwK+GETGhfkvNMf6zXbZkDq4kKB/ywaKvVPodS1Poa44+B9sxbUp1jMfFtlOJ3AYB0WDS Op3d7F2ry20CIf1Ifh0nIxkQPkTX7aX5rI92oZeu5u038dHUu/dO2EcuCjl1eDMGm5PLHDSP 0QUw5xzk1Y8MG1JQ56PtqReO33inBXG63yTIikJmUXFTw6lLJwARAQABtDNCb3JpcyBPc3Ry b3Zza3kgKFdvcmspIDxib3Jpcy5vc3Ryb3Zza3lAb3JhY2xlLmNvbT6JAjgEEwECACIFAlH8 CgsCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEIredpCGysGyasEP/j5xApopUf4g 9Fl3UxZuBx+oduuw3JHqgbGZ2siA3EA4bKwtKq8eT7ekpApn4c0HA8TWTDtgZtLSV5IdH+9z JimBDrhLkDI3Zsx2CafL4pMJvpUavhc5mEU8myp4dWCuIylHiWG65agvUeFZYK4P33fGqoaS VGx3tsQIAr7MsQxilMfRiTEoYH0WWthhE0YVQzV6kx4wj4yLGYPPBtFqnrapKKC8yFTpgjaK jImqWhU9CSUAXdNEs/oKVR1XlkDpMCFDl88vKAuJwugnixjbPFTVPyoC7+4Bm/FnL3iwlJVE qIGQRspt09r+datFzPqSbp5Fo/9m4JSvgtPp2X2+gIGgLPWp2ft1NXHHVWP19sPgEsEJXSr9 tskM8ScxEkqAUuDs6+x/ISX8wa5Pvmo65drN+JWA8EqKOHQG6LUsUdJolFM2i4Z0k40BnFU/ kjTARjrXW94LwokVy4x+ZYgImrnKWeKac6fMfMwH2aKpCQLlVxdO4qvJkv92SzZz4538az1T m+3ekJAimou89cXwXHCFb5WqJcyjDfdQF857vTn1z4qu7udYCuuV/4xDEhslUq1+GcNDjAhB nNYPzD+SvhWEsrjuXv+fDONdJtmLUpKs4Jtak3smGGhZsqpcNv8nQzUGDQZjuCSmDqW8vn2o hWwveNeRTkxh+2x1Qb3GT46uuQINBFH8CgsBEADGC/yx5ctcLQlB9hbq7KNqCDyZNoYu1HAB Hal3MuxPfoGKObEktawQPQaSTB5vNlDxKihezLnlT/PKjcXC2R1OjSDinlu5XNGc6mnky03q yymUPyiMtWhBBftezTRxWRslPaFWlg/h/Y1iDuOcklhpr7K1h1jRPCrf1yIoxbIpDbffnuyz kuto4AahRvBU4Js4sU7f/btU+h+e0AcLVzIhTVPIz7PM+Gk2LNzZ3/on4dnEc/qd+ZZFlOQ4 KDN/hPqlwA/YJsKzAPX51L6Vv344pqTm6Z0f9M7YALB/11FO2nBB7zw7HAUYqJeHutCwxm7i BDNt0g9fhviNcJzagqJ1R7aPjtjBoYvKkbwNu5sWDpQ4idnsnck4YT6ctzN4I+6lfkU8zMzC gM2R4qqUXmxFIS4Bee+gnJi0Pc3KcBYBZsDK44FtM//5Cp9DrxRQOh19kNHBlxkmEb8kL/pw XIDcEq8MXzPBbxwHKJ3QRWRe5jPNpf8HCjnZz0XyJV0/4M1JvOua7IZftOttQ6KnM4m6WNIZ 2ydg7dBhDa6iv1oKdL7wdp/rCulVWn8R7+3cRK95SnWiJ0qKDlMbIN8oGMhHdin8cSRYdmHK kTnvSGJNlkis5a+048o0C6jI3LozQYD/W9wq7MvgChgVQw1iEOB4u/3FXDEGulRVko6xCBU4 SQARAQABiQIfBBgBAgAJBQJR/AoLAhsMAAoJEIredpCGysGyfvMQAIywR6jTqix6/fL0Ip8G jpt3uk//QNxGJE3ZkUNLX6N786vnEJvc1beCu6EwqD1ezG9fJKMl7F3SEgpYaiKEcHfoKGdh 30B3Hsq44vOoxR6zxw2B/giADjhmWTP5tWQ9548N4VhIZMYQMQCkdqaueSL+8asp8tBNP+TJ PAIIANYvJaD8xA7sYUXGTzOXDh2THWSvmEWWmzok8er/u6ZKdS1YmZkUy8cfzrll/9hiGCTj u3qcaOM6i/m4hqtvsI1cOORMVwjJF4+IkC5ZBoeRs/xW5zIBdSUoC8L+OCyj5JETWTt40+lu qoqAF/AEGsNZTrwHJYu9rbHH260C0KYCNqmxDdcROUqIzJdzDKOrDmebkEVnxVeLJBIhYZUd t3Iq9hdjpU50TA6sQ3mZxzBdfRgg+vaj2DsJqI5Xla9QGKD+xNT6v14cZuIMZzO7w0DoojM4 ByrabFsOQxGvE0w9Dch2BDSI2Xyk1zjPKxG1VNBQVx3flH37QDWpL2zlJikW29Ws86PHdthh Fm5PY8YtX576DchSP6qJC57/eAAe/9ztZdVAdesQwGb9hZHJc75B+VNm4xrh/PJO6c1THqdQ 19WVJ+7rDx3PhVncGlbAOiiiE3NOFPJ1OQYxPKtpBUukAlOTnkKE6QcA4zckFepUkfmBV1wM Jg6OxFYd01z+a+oL Message-ID: <4a68acc6-3ce7-e26b-2c98-774867288410@oracle.com> Date: Thu, 7 Nov 2019 17:54:52 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <20191107203629.GF6730@ziepe.ca> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9434 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1910280000 definitions=main-1911070210 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9434 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1910280000 definitions=main-1911070210 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On 11/7/19 3:36 PM, Jason Gunthorpe wrote: > On Tue, Nov 05, 2019 at 10:16:46AM -0500, Boris Ostrovsky wrote: > >>> So, I suppose it can be relaxed to a null test and a WARN_ON that it >>> hasn't changed? >> You mean >> >> if (use_ptemod) { >>         WARN_ON(map->vma != vma); >>         ... >> >> >> Yes, that sounds good. > I amended my copy of the patch with the above, has this rework shown > signs of working? Yes, it works fine. But please don't forget notifier ops initialization. With those two changes, Reviewed-by: Boris Ostrovsky > > @@ -436,7 +436,8 @@ static void gntdev_vma_close(struct vm_area_struct *vma) > struct gntdev_priv *priv = file->private_data; > > pr_debug("gntdev_vma_close %p\n", vma); > - if (use_ptemod && map->vma == vma) { > + if (use_ptemod) { > + WARN_ON(map->vma != vma); > mmu_range_notifier_remove(&map->notifier); > map->vma = NULL; > } > > Jason From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert Date: Thu, 7 Nov 2019 17:54:52 -0500 Message-ID: <4a68acc6-3ce7-e26b-2c98-774867288410@oracle.com> References: <20191028201032.6352-1-jgg@ziepe.ca> <20191028201032.6352-10-jgg@ziepe.ca> <3938b588-c6c5-3bd1-8ea9-47e4d5b2045c@oracle.com> <20191105023108.GN22766@mellanox.com> <20191107203629.GF6730@ziepe.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20191107203629.GF6730@ziepe.ca> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Jason Gunthorpe Cc: Juergen Gross , Ralph Campbell , Stefano Stabellini , Oleksandr Andrushchenko , "linux-rdma@vger.kernel.org" , John Hubbard , "Felix.Kuehling@amd.com" , Mike Marciniszyn , "dri-devel@lists.freedesktop.org" , Christoph Hellwig , "linux-mm@kvack.org" , Jerome Glisse , "amd-gfx@lists.freedesktop.org" , "nouveau@lists.freedesktop.org" , Alex Deucher , "xen-devel@lists.xenproject.org" , Dennis Dalessandro , Petr Cvek List-Id: nouveau.vger.kernel.org T24gMTEvNy8xOSAzOjM2IFBNLCBKYXNvbiBHdW50aG9ycGUgd3JvdGU6Cj4gT24gVHVlLCBOb3Yg MDUsIDIwMTkgYXQgMTA6MTY6NDZBTSAtMDUwMCwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+Cj4+ PiBTbywgSSBzdXBwb3NlIGl0IGNhbiBiZSByZWxheGVkIHRvIGEgbnVsbCB0ZXN0IGFuZCBhIFdB Uk5fT04gdGhhdCBpdAo+Pj4gaGFzbid0IGNoYW5nZWQ/Cj4+IFlvdSBtZWFuCj4+Cj4+IGlmICh1 c2VfcHRlbW9kKSB7Cj4+IMKgwqDCoMKgwqDCoMKgIFdBUk5fT04obWFwLT52bWEgIT0gdm1hKTsK Pj4gwqDCoMKgwqDCoMKgwqAgLi4uCj4+Cj4+Cj4+IFllcywgdGhhdCBzb3VuZHMgZ29vZC4KPiBJ IGFtZW5kZWQgbXkgY29weSBvZiB0aGUgcGF0Y2ggd2l0aCB0aGUgYWJvdmUsIGhhcyB0aGlzIHJl d29yayBzaG93bgo+IHNpZ25zIG9mIHdvcmtpbmc/CgpZZXMsIGl0IHdvcmtzIGZpbmUuCgpCdXQg cGxlYXNlIGRvbid0IGZvcmdldCBub3RpZmllciBvcHMgaW5pdGlhbGl6YXRpb24uCgpXaXRoIHRo b3NlIHR3byBjaGFuZ2VzLAoKUmV2aWV3ZWQtYnk6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0 cm92c2t5QG9yYWNsZS5jb20+Cgo+Cj4gQEAgLTQzNiw3ICs0MzYsOCBAQCBzdGF0aWMgdm9pZCBn bnRkZXZfdm1hX2Nsb3NlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hKQo+ICAgICAgICAgc3Ry dWN0IGdudGRldl9wcml2ICpwcml2ID0gZmlsZS0+cHJpdmF0ZV9kYXRhOwo+ICAKPiAgICAgICAg IHByX2RlYnVnKCJnbnRkZXZfdm1hX2Nsb3NlICVwXG4iLCB2bWEpOwo+IC0gICAgICAgaWYgKHVz ZV9wdGVtb2QgJiYgbWFwLT52bWEgPT0gdm1hKSB7Cj4gKyAgICAgICBpZiAodXNlX3B0ZW1vZCkg ewo+ICsgICAgICAgICAgICAgICBXQVJOX09OKG1hcC0+dm1hICE9IHZtYSk7Cj4gICAgICAgICAg ICAgICAgIG1tdV9yYW5nZV9ub3RpZmllcl9yZW1vdmUoJm1hcC0+bm90aWZpZXIpOwo+ICAgICAg ICAgICAgICAgICBtYXAtPnZtYSA9IE5VTEw7Cj4gICAgICAgICB9Cj4KPiBKYXNvbgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxp bmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJl ZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVs 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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 E25B3C5DF60 for ; 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Thu, 07 Nov 2019 22:55:01 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xA7MsD57138401; Thu, 7 Nov 2019 22:55:01 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 2w41wb0f8s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2019 22:55:01 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id xA7Msu67017548; Thu, 7 Nov 2019 22:54:56 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 07 Nov 2019 14:54:56 -0800 To: Jason Gunthorpe References: <20191028201032.6352-1-jgg@ziepe.ca> <20191028201032.6352-10-jgg@ziepe.ca> <3938b588-c6c5-3bd1-8ea9-47e4d5b2045c@oracle.com> <20191105023108.GN22766@mellanox.com> <20191107203629.GF6730@ziepe.ca> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <20191107203629.GF6730@ziepe.ca> Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9434 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1910280000 definitions=main-1911070210 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9434 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1910280000 definitions=main-1911070210 Subject: Re: [Xen-devel] [PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , David Zhou , Ralph Campbell , Stefano Stabellini , Oleksandr Andrushchenko , "linux-rdma@vger.kernel.org" , John Hubbard , "Felix.Kuehling@amd.com" , Mike Marciniszyn , "dri-devel@lists.freedesktop.org" , Christoph Hellwig , "linux-mm@kvack.org" , Jerome Glisse , "amd-gfx@lists.freedesktop.org" , "nouveau@lists.freedesktop.org" , Alex Deucher , "xen-devel@lists.xenproject.org" , Dennis Dalessandro , Petr Cvek , =?UTF-8?Q?Christian_K=c3=b6nig?= , Ben Skeggs Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gMTEvNy8xOSAzOjM2IFBNLCBKYXNvbiBHdW50aG9ycGUgd3JvdGU6Cj4gT24gVHVlLCBOb3Yg MDUsIDIwMTkgYXQgMTA6MTY6NDZBTSAtMDUwMCwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+Cj4+ PiBTbywgSSBzdXBwb3NlIGl0IGNhbiBiZSByZWxheGVkIHRvIGEgbnVsbCB0ZXN0IGFuZCBhIFdB Uk5fT04gdGhhdCBpdAo+Pj4gaGFzbid0IGNoYW5nZWQ/Cj4+IFlvdSBtZWFuCj4+Cj4+IGlmICh1 c2VfcHRlbW9kKSB7Cj4+IMKgwqDCoMKgwqDCoMKgIFdBUk5fT04obWFwLT52bWEgIT0gdm1hKTsK Pj4gwqDCoMKgwqDCoMKgwqAgLi4uCj4+Cj4+Cj4+IFllcywgdGhhdCBzb3VuZHMgZ29vZC4KPiBJ IGFtZW5kZWQgbXkgY29weSBvZiB0aGUgcGF0Y2ggd2l0aCB0aGUgYWJvdmUsIGhhcyB0aGlzIHJl d29yayBzaG93bgo+IHNpZ25zIG9mIHdvcmtpbmc/CgpZZXMsIGl0IHdvcmtzIGZpbmUuCgpCdXQg cGxlYXNlIGRvbid0IGZvcmdldCBub3RpZmllciBvcHMgaW5pdGlhbGl6YXRpb24uCgpXaXRoIHRo b3NlIHR3byBjaGFuZ2VzLAoKUmV2aWV3ZWQtYnk6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0 cm92c2t5QG9yYWNsZS5jb20+Cgo+Cj4gQEAgLTQzNiw3ICs0MzYsOCBAQCBzdGF0aWMgdm9pZCBn bnRkZXZfdm1hX2Nsb3NlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hKQo+ICAgICAgICAgc3Ry dWN0IGdudGRldl9wcml2ICpwcml2ID0gZmlsZS0+cHJpdmF0ZV9kYXRhOwo+ICAKPiAgICAgICAg IHByX2RlYnVnKCJnbnRkZXZfdm1hX2Nsb3NlICVwXG4iLCB2bWEpOwo+IC0gICAgICAgaWYgKHVz ZV9wdGVtb2QgJiYgbWFwLT52bWEgPT0gdm1hKSB7Cj4gKyAgICAgICBpZiAodXNlX3B0ZW1vZCkg ewo+ICsgICAgICAgICAgICAgICBXQVJOX09OKG1hcC0+dm1hICE9IHZtYSk7Cj4gICAgICAgICAg ICAgICAgIG1tdV9yYW5nZV9ub3RpZmllcl9yZW1vdmUoJm1hcC0+bm90aWZpZXIpOwo+ICAgICAg ICAgICAgICAgICBtYXAtPnZtYSA9IE5VTEw7Cj4gICAgICAgICB9Cj4KPiBKYXNvbgoKCl9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWls aW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVu cHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw= 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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 6339DC5DF60 for ; 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Thu, 7 Nov 2019 22:55:01 GMT Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2130.oracle.com with ESMTP id 2w41w19j03-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2019 22:55:01 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xA7MsD57138401; Thu, 7 Nov 2019 22:55:01 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 2w41wb0f8s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2019 22:55:01 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id xA7Msu67017548; Thu, 7 Nov 2019 22:54:56 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 07 Nov 2019 14:54:56 -0800 Subject: Re: [PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert To: Jason Gunthorpe References: <20191028201032.6352-1-jgg@ziepe.ca> <20191028201032.6352-10-jgg@ziepe.ca> <3938b588-c6c5-3bd1-8ea9-47e4d5b2045c@oracle.com> <20191105023108.GN22766@mellanox.com> <20191107203629.GF6730@ziepe.ca> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; 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charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Message-ID: <20191107225452.9dIM6MQc2tgGCEn0TP57T8ILB2Vhdvvt-ZOVEZIgAmA@z> T24gMTEvNy8xOSAzOjM2IFBNLCBKYXNvbiBHdW50aG9ycGUgd3JvdGU6Cj4gT24gVHVlLCBOb3Yg MDUsIDIwMTkgYXQgMTA6MTY6NDZBTSAtMDUwMCwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+Cj4+ PiBTbywgSSBzdXBwb3NlIGl0IGNhbiBiZSByZWxheGVkIHRvIGEgbnVsbCB0ZXN0IGFuZCBhIFdB Uk5fT04gdGhhdCBpdAo+Pj4gaGFzbid0IGNoYW5nZWQ/Cj4+IFlvdSBtZWFuCj4+Cj4+IGlmICh1 c2VfcHRlbW9kKSB7Cj4+IMKgwqDCoMKgwqDCoMKgIFdBUk5fT04obWFwLT52bWEgIT0gdm1hKTsK Pj4gwqDCoMKgwqDCoMKgwqAgLi4uCj4+Cj4+Cj4+IFllcywgdGhhdCBzb3VuZHMgZ29vZC4KPiBJ IGFtZW5kZWQgbXkgY29weSBvZiB0aGUgcGF0Y2ggd2l0aCB0aGUgYWJvdmUsIGhhcyB0aGlzIHJl d29yayBzaG93bgo+IHNpZ25zIG9mIHdvcmtpbmc/CgpZZXMsIGl0IHdvcmtzIGZpbmUuCgpCdXQg cGxlYXNlIGRvbid0IGZvcmdldCBub3RpZmllciBvcHMgaW5pdGlhbGl6YXRpb24uCgpXaXRoIHRo b3NlIHR3byBjaGFuZ2VzLAoKUmV2aWV3ZWQtYnk6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0 cm92c2t5QG9yYWNsZS5jb20+Cgo+Cj4gQEAgLTQzNiw3ICs0MzYsOCBAQCBzdGF0aWMgdm9pZCBn bnRkZXZfdm1hX2Nsb3NlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hKQo+ICAgICAgICAgc3Ry dWN0IGdudGRldl9wcml2ICpwcml2ID0gZmlsZS0+cHJpdmF0ZV9kYXRhOwo+ICAKPiAgICAgICAg IHByX2RlYnVnKCJnbnRkZXZfdm1hX2Nsb3NlICVwXG4iLCB2bWEpOwo+IC0gICAgICAgaWYgKHVz ZV9wdGVtb2QgJiYgbWFwLT52bWEgPT0gdm1hKSB7Cj4gKyAgICAgICBpZiAodXNlX3B0ZW1vZCkg ewo+ICsgICAgICAgICAgICAgICBXQVJOX09OKG1hcC0+dm1hICE9IHZtYSk7Cj4gICAgICAgICAg ICAgICAgIG1tdV9yYW5nZV9ub3RpZmllcl9yZW1vdmUoJm1hcC0+bm90aWZpZXIpOwo+ICAgICAg ICAgICAgICAgICBtYXAtPnZtYSA9IE5VTEw7Cj4gICAgICAgICB9Cj4KPiBKYXNvbgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KYW1kLWdmeCBtYWlsaW5n IGxpc3QKYW1kLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9hbWQtZ2Z4