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dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 6179487524; Fri, 13 Nov 2020 16:12:07 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CSTREpiiuL9b; Fri, 13 Nov 2020 16:12:05 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 461F987407; Fri, 13 Nov 2020 16:12:05 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2E450C088E; Fri, 13 Nov 2020 16:12:05 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2AA97C0800 for ; Fri, 13 Nov 2020 16:12:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 261B08775B for ; Fri, 13 Nov 2020 16:12:04 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Z782hRP6dW1Q for ; Fri, 13 Nov 2020 16:12:03 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by hemlock.osuosl.org (Postfix) with ESMTPS id 8035C87755 for ; Fri, 13 Nov 2020 16:12:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605283922; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MzPV3G2COP33yZAJV3i6S/9jkDAO8h9mjkNYvu/SPwg=; b=ZMfFlICiyxVYaVKoA75+pBccEyW5XzhvdG9W7JVTkuifiylnwQq77X9zjKUbYB6w+qagwD OrKBuzfVlD6zlyhKtKQFGVb4swRPL50D2ffVdwk7TUo+7C7dorVz0u1433nD20bEnEsRcD OtfrrOgXskbOQL8IuSp1jAGzpr9KAag= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-130-vDgneSjqO1Gg21M8dJbxMw-1; Fri, 13 Nov 2020 11:11:58 -0500 X-MC-Unique: vDgneSjqO1Gg21M8dJbxMw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 58756801FDE; Fri, 13 Nov 2020 16:11:56 +0000 (UTC) Received: from [10.36.114.125] (ovpn-114-125.ams2.redhat.com [10.36.114.125]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8442B46; Fri, 13 Nov 2020 16:11:49 +0000 (UTC) Subject: Re: [PATCH v10 05/11] vfio/pci: Register an iommu fault handler To: Zenghui Yu , eric.auger.pro@gmail.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, joro@8bytes.org, alex.williamson@redhat.com, jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com, robin.murphy@arm.com References: <20200320161911.27494-1-eric.auger@redhat.com> <20200320161911.27494-6-eric.auger@redhat.com> <571978ff-ee8a-6e9f-6755-519d0871646f@huawei.com> From: Auger Eric Message-ID: <80befd0f-8876-2cd2-7af0-c5e32e79323b@redhat.com> Date: Fri, 13 Nov 2020 17:11:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <571978ff-ee8a-6e9f-6755-519d0871646f@huawei.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" SGkgWmVuZ2h1aSwKCk9uIDkvMjQvMjAgMTA6NDkgQU0sIFplbmdodWkgWXUgd3JvdGU6Cj4gSGkg RXJpYywKPiAKPiBPbiAyMDIwLzMvMjEgMDoxOSwgRXJpYyBBdWdlciB3cm90ZToKPj4gUmVnaXN0 ZXIgYW4gSU9NTVUgZmF1bHQgaGFuZGxlciB3aGljaCByZWNvcmRzIGZhdWx0cyBpbgo+PiB0aGUg RE1BIEZBVUxUIHJlZ2lvbiByaW5nIGJ1ZmZlci4gSW4gYSBzdWJzZXF1ZW50IHBhdGNoLCB3ZQo+ PiB3aWxsIGFkZCB0aGUgc2lnbmFsaW5nIG9mIGEgc3BlY2lmaWMgZXZlbnRmZCB0byBhbGxvdyB0 aGUKPj4gdXNlcnNwYWNlIHRvIGJlIG5vdGlmaWVkIHdoZW5ldmVyIGEgbmV3IGZhdWx0IGFzIHNo b3duIHVwLgo+Pgo+PiBTaWduZWQtb2ZmLWJ5OiBFcmljIEF1Z2VyIDxlcmljLmF1Z2VyQHJlZGhh dC5jb20+Cj4gCj4gWy4uLl0KPiAKPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvdmZpby9wY2kvdmZp b19wY2kuYyBiL2RyaXZlcnMvdmZpby9wY2kvdmZpb19wY2kuYwo+PiBpbmRleCA1ODZiODlkZWJl ZDUuLjY5NTk1YzI0MGJhZiAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy92ZmlvL3BjaS92ZmlvX3Bj aS5jCj4+ICsrKyBiL2RyaXZlcnMvdmZpby9wY2kvdmZpb19wY2kuYwo+PiBAQCAtMjcsNiArMjcs NyBAQAo+PiDCoCAjaW5jbHVkZSA8bGludXgvdmZpby5oPgo+PiDCoCAjaW5jbHVkZSA8bGludXgv dmdhYXJiLmg+Cj4+IMKgICNpbmNsdWRlIDxsaW51eC9ub3NwZWMuaD4KPj4gKyNpbmNsdWRlIDxs aW51eC9jaXJjX2J1Zi5oPgo+PiDCoCDCoCAjaW5jbHVkZSAidmZpb19wY2lfcHJpdmF0ZS5oIgo+ PiDCoCBAQCAtMjgzLDYgKzI4NCwzOCBAQCBzdGF0aWMgY29uc3Qgc3RydWN0IHZmaW9fcGNpX3Jl Z29wcwo+PiB2ZmlvX3BjaV9kbWFfZmF1bHRfcmVnb3BzID0gewo+PiDCoMKgwqDCoMKgIC5hZGRf Y2FwYWJpbGl0eSA9IHZmaW9fcGNpX2RtYV9mYXVsdF9hZGRfY2FwYWJpbGl0eSwKPj4gwqAgfTsK Pj4gwqAgK2ludCB2ZmlvX3BjaV9pb21tdV9kZXZfZmF1bHRfaGFuZGxlcihzdHJ1Y3QgaW9tbXVf ZmF1bHQgKmZhdWx0LAo+PiB2b2lkICpkYXRhKQo+PiArewo+PiArwqDCoMKgIHN0cnVjdCB2Zmlv X3BjaV9kZXZpY2UgKnZkZXYgPSAoc3RydWN0IHZmaW9fcGNpX2RldmljZSAqKWRhdGE7Cj4+ICvC oMKgwqAgc3RydWN0IHZmaW9fcmVnaW9uX2RtYV9mYXVsdCAqcmVnID0KPj4gK8KgwqDCoMKgwqDC oMKgIChzdHJ1Y3QgdmZpb19yZWdpb25fZG1hX2ZhdWx0ICopdmRldi0+ZmF1bHRfcGFnZXM7Cj4+ ICvCoMKgwqAgc3RydWN0IGlvbW11X2ZhdWx0ICpuZXcgPQo+PiArwqDCoMKgwqDCoMKgwqAgKHN0 cnVjdCBpb21tdV9mYXVsdCAqKSh2ZGV2LT5mYXVsdF9wYWdlcyArIHJlZy0+b2Zmc2V0ICsKPj4g K8KgwqDCoMKgwqDCoMKgwqDCoMKgwqAgcmVnLT5oZWFkICogcmVnLT5lbnRyeV9zaXplKTsKPiAK PiBTaG91bGRuJ3QgJ3JlZy0+aGVhZCcgYmUgcHJvdGVjdGVkIHVuZGVyIHRoZSBmYXVsdF9xdWV1 ZV9sb2NrPyBPdGhlcndpc2UKPiB0aGluZ3MgbWF5IGNoYW5nZSBiZWhpbmQgb3VyIGJhY2tzLi4u Pgo+IFdlIHNob3VsZG4ndCB0YWtlIGFueSBhc3N1bXB0aW9uIGFib3V0IGhvdyBJT01NVSBkcml2 ZXIgd291bGQgcmVwb3J0IHRoZQo+IGZhdWx0IChzZXJpYWxseSBvciBpbiBwYXJhbGxlbCksIEkg dGhpbmsuCgpZZXMgSSBtb2RpZmllZCB0aGUgbG9ja2luZwoKVGhhbmtzCgpFcmljCj4gCj4+ICvC oMKgwqAgaW50IGhlYWQsIHRhaWwsIHNpemU7Cj4+ICvCoMKgwqAgaW50IHJldCA9IDA7Cj4+ICsK Pj4gK8KgwqDCoCBpZiAoZmF1bHQtPnR5cGUgIT0gSU9NTVVfRkFVTFRfRE1BX1VOUkVDT1YpCj4+ ICvCoMKgwqDCoMKgwqDCoCByZXR1cm4gLUVOT0VOVDsKPj4gKwo+PiArwqDCoMKgIG11dGV4X2xv Y2soJnZkZXYtPmZhdWx0X3F1ZXVlX2xvY2spOwo+PiArCj4+ICvCoMKgwqAgaGVhZCA9IHJlZy0+ aGVhZDsKPj4gK8KgwqDCoCB0YWlsID0gcmVnLT50YWlsOwo+PiArwqDCoMKgIHNpemUgPSByZWct Pm5iX2VudHJpZXM7Cj4+ICsKPj4gK8KgwqDCoCBpZiAoQ0lSQ19TUEFDRShoZWFkLCB0YWlsLCBz aXplKSA8IDEpIHsKPj4gK8KgwqDCoMKgwqDCoMKgIHJldCA9IC1FTk9TUEM7Cj4+ICvCoMKgwqDC oMKgwqDCoCBnb3RvIHVubG9jazsKPj4gK8KgwqDCoCB9Cj4+ICsKPj4gK8KgwqDCoCAqbmV3ID0g KmZhdWx0Owo+PiArwqDCoMKgIHJlZy0+aGVhZCA9IChoZWFkICsgMSkgJSBzaXplOwo+PiArdW5s b2NrOgo+PiArwqDCoMKgIG11dGV4X3VubG9jaygmdmRldi0+ZmF1bHRfcXVldWVfbG9jayk7Cj4+ ICvCoMKgwqAgcmV0dXJuIHJldDsKPj4gK30KPj4gKwo+PiDCoCAjZGVmaW5lIERNQV9GQVVMVF9S SU5HX0xFTkdUSCA1MTIKPj4gwqAgwqAgc3RhdGljIGludCB2ZmlvX3BjaV9pbml0X2RtYV9mYXVs dF9yZWdpb24oc3RydWN0IHZmaW9fcGNpX2RldmljZQo+PiAqdmRldikKPj4gQEAgLTMxNyw2ICsz NTAsMTMgQEAgc3RhdGljIGludCB2ZmlvX3BjaV9pbml0X2RtYV9mYXVsdF9yZWdpb24oc3RydWN0 Cj4+IHZmaW9fcGNpX2RldmljZSAqdmRldikKPj4gwqDCoMKgwqDCoCBoZWFkZXItPmVudHJ5X3Np emUgPSBzaXplb2Yoc3RydWN0IGlvbW11X2ZhdWx0KTsKPj4gwqDCoMKgwqDCoCBoZWFkZXItPm5i X2VudHJpZXMgPSBETUFfRkFVTFRfUklOR19MRU5HVEg7Cj4+IMKgwqDCoMKgwqAgaGVhZGVyLT5v ZmZzZXQgPSBzaXplb2Yoc3RydWN0IHZmaW9fcmVnaW9uX2RtYV9mYXVsdCk7Cj4+ICsKPj4gK8Kg wqDCoCByZXQgPSBpb21tdV9yZWdpc3Rlcl9kZXZpY2VfZmF1bHRfaGFuZGxlcigmdmRldi0+cGRl di0+ZGV2LAo+PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgdmZpb19w Y2lfaW9tbXVfZGV2X2ZhdWx0X2hhbmRsZXIsCj4+ICvCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoCB2ZGV2KTsKPj4gK8KgwqDCoCBpZiAocmV0KQo+PiArwqDCoMKgwqDCoMKg wqAgZ290byBvdXQ7Cj4+ICsKPj4gwqDCoMKgwqDCoCByZXR1cm4gMDsKPj4gwqAgb3V0Ogo+PiDC oMKgwqDCoMKgIGtmcmVlKHZkZXYtPmZhdWx0X3BhZ2VzKTsKPiAKPiAKPiBUaGFua3MsCj4gWmVu Z2h1aQo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K aW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBz Oi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11