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bh=K6MYW0Cw8y8JjG5SoRIVtn0utAaLa/9boq4bliE04oQ=; b=E/D9AxX5y6fo7WvBvhjKkXA/LWgv/w0wwgPBif8WCHPY8UD5RIQAkRzRrbyEnTLYZcEZJd n35m9Y7j7aIyTPCesZqaNG44Kn/9wRfU1IqXHo/CM5mQ/NjGgPMV+lD7xyPG1o/y3FReRx /vumSyD8XnuCWwfdidZGmVsMTuWH9D4= 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-180-hrEKN05ONsaAjIh7E5NlUA-1; Tue, 03 Mar 2020 08:14:14 -0500 X-MC-Unique: hrEKN05ONsaAjIh7E5NlUA-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 2B28A13E4; Tue, 3 Mar 2020 13:14:11 +0000 (UTC) Received: from [10.36.116.59] (ovpn-116-59.ams2.redhat.com [10.36.116.59]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 00884277A4; Tue, 3 Mar 2020 13:14:02 +0000 (UTC) Subject: Re: [PATCH v9 00/11] SMMUv3 Nested Stage Setup (VFIO part) To: zhangfei , Tomasz Nowicki , "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" , "jean-philippe.brucker@arm.com" , "will.deacon@arm.com" , "robin.murphy@arm.com" References: <20190711135625.20684-1-eric.auger@redhat.com> <3741c034-08f1-9dbb-ab06-434f3a8bd782@redhat.com> From: Auger Eric Message-ID: Date: Tue, 3 Mar 2020 14:14:01 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Cc: "peter.maydell@linaro.org" , "kevin.tian@intel.com" , "vincent.stehle@arm.com" , "ashok.raj@intel.com" , "marc.zyngier@arm.com" , "tina.zhang@intel.com" , Kenneth Lee 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" SGkgWmhhbmdmZWksCgpPbiAzLzMvMjAgMTo1NyBQTSwgemhhbmdmZWkgd3JvdGU6Cj4gSGksIEVy aWMKPiAKPiBPbiAyMDE5LzExLzIwIOS4i+WNiDY6MTgsIEF1Z2VyIEVyaWMgd3JvdGU6Cj4+Cj4+ Pj4gVGhpcyBzZXJpZXMgYnJpbmdzIHRoZSBWRklPIHBhcnQgb2YgSFcgbmVzdGVkIHBhZ2luZyBz dXBwb3J0Cj4+Pj4gaW4gdGhlIFNNTVV2My4KPj4+Pgo+Pj4+IFRoZSBzZXJpZXMgZGVwZW5kcyBv bjoKPj4+PiBbUEFUQ0ggdjkgMDAvMTRdIFNNTVV2MyBOZXN0ZWQgU3RhZ2UgU2V0dXAgKElPTU1V IHBhcnQpCj4+Pj4gKGh0dHBzOi8vd3d3LnNwaW5pY3MubmV0L2xpc3RzL2tlcm5lbC9tc2czMTg3 NzE0Lmh0bWwpCj4+Pj4KPj4+PiAzIG5ldyBJT0NUTHMgYXJlIGludHJvZHVjZWQgdGhhdCBhbGxv dyB0aGUgdXNlcnNwYWNlIHRvCj4+Pj4gMSkgcGFzcyB0aGUgZ3Vlc3Qgc3RhZ2UgMSBjb25maWd1 cmF0aW9uCj4+Pj4gMikgcGFzcyBzdGFnZSAxIE1TSSBiaW5kaW5ncwo+Pj4+IDMpIGludmFsaWRh dGUgc3RhZ2UgMSByZWxhdGVkIGNhY2hlcwo+Pj4+Cj4+Pj4gVGhleSBtYXAgb250byB0aGUgcmVs YXRlZCBuZXcgSU9NTVUgQVBJIGZ1bmN0aW9ucy4KPj4+Pgo+Pj4+IFdlIGludHJvZHVjZSB0aGUg Y2FwYWJpbGl0eSB0byByZWdpc3RlciBzcGVjaWZpYyBpbnRlcnJ1cHQKPj4+PiBpbmRleGVzIChz ZWUgWzFdKS4gQSBuZXcgRE1BX0ZBVUxUIGludGVycnVwdCBpbmRleCBhbGxvd3MgdG8gcmVnaXN0 ZXIKPj4+PiBhbiBldmVudGZkIHRvIGJlIHNpZ25hbGVkIHdoZW5ldmVyIGEgc3RhZ2UgMSByZWxh dGVkIGZhdWx0Cj4+Pj4gaXMgZGV0ZWN0ZWQgYXQgcGh5c2ljYWwgbGV2ZWwuIEFsc28gYSBzcGVj aWZpYyByZWdpb24gYWxsb3dzCj4+Pj4gdG8gZXhwb3NlIHRoZSBmYXVsdCByZWNvcmRzIHRvIHRo ZSB1c2VyIHNwYWNlLgo+Pj4+Cj4+Pj4gQmVzdCBSZWdhcmRzCj4+Pj4KPj4+PiBFcmljCj4+Pj4K Pj4+PiBUaGlzIHNlcmllcyBjYW4gYmUgZm91bmQgYXQ6Cj4+Pj4gaHR0cHM6Ly9naXRodWIuY29t L2VhdWdlci9saW51eC90cmVlL3Y1LjMuMC1yYzAtMnN0YWdlLXY5Cj4+PiBJIHRoaW5rIHlvdSBo YXZlIGFscmVhZHkgdGVzdGVkIG9uIFRodW5kZXJYMiwgYnV0IGFzIGEgZm9ybWFsaXR5LCBmb3IK Pj4+IHRoZSB3aG9sZSBzZXJpZXM6Cj4+Pgo+Pj4gVGVzdGVkLWJ5OiBUb21hc3ogTm93aWNraSA8 dG5vd2lja2lAbWFydmVsbC5jb20+Cj4+PiBxZW11OiBodHRwczovL2dpdGh1Yi5jb20vZWF1Z2Vy L3FlbXUvdHJlZS92NC4xLjAtcmMwLTJzdGFnZS1yZmN2NQo+Pj4ga2VybmVsOiBodHRwczovL2dp dGh1Yi5jb20vZWF1Z2VyL2xpbnV4L3RyZWUvdjUuMy4wLXJjMC0yc3RhZ2UtdjkgKwo+Pj4gU2hh bWVlcidzIGZpeCBwYXRjaAo+Pj4KPj4+IEluIG15IHRlc3QgSSBhc3NpZ25lZCBJbnRlbCA4MjU3 NEwgTklDIGFuZCBwZXJmb3JtIGlwZXJmIHRlc3RzLgo+PiBUaGFuayB5b3UgZm9yIHlvdXIgdGVz dGluZyBlZmZvcnRzLgo+Pj4gT3RoZXIgZm9sa3MgZnJvbSBNYXJ2ZWxsIGNsYWltZWQgdGhpcyB0 byBiZSBpbXBvcnRhbnQgZmVhdHVyZSBzbyBJIGFza2VkCj4+PiB0aGVtIHRvIHJldmlldyBhbmQg c3BlYWsgdXAgb24gbWFpbGluZyBsaXN0Lgo+PiBUaGF0J3MgbmljZSB0byByZWFkIHRoYXQhwqAg U28gaXQgaXMgdGltZSBmb3IgbWUgdG8gcmViYXNlIGJvdGggdGhlIGlvbW11Cj4+IGFuZCB2Zmlv IHBhcnRzLiBJIHdpbGwgc3VibWl0IHNvbWV0aGluZyBxdWlja2x5LiBUaGVuIEkgd291bGQgZW5j b3VyYWdlCj4+IHRoZSByZXZpZXcgZWZmb3J0cyB0byBmb2N1cyBmaXJzdCBvbiB0aGUgaW9tbXUg cGFydC4KPj4KPj4KPiB2U1ZBIGZlYXR1cmUgaXMgYWxzbyB2ZXJ5IGltcG9ydGFudCB0byB1cywg aXQgd2lsbCBiZSBncmVhdCBpZiB2U1ZBIGNhbgo+IGJlIHN1cHBvcnRlZCBpbiBndWVzdCB3b3Js ZC4KPiAKPiBXZSBqdXN0IHN1Ym1pdHRlZCB1YWNjZSBmb3IgYWNjZWxlcmF0b3IsIHdoaWNoIHdp bGwgYmUgc3VwcG9ydGluZyBTVkEgb24KPiBob3N0LCB0aGFua3MgdG8gSmVhbidzIGVmZm9ydC4K PiAKPiBodHRwczovL2xrbWwub3JnL2xrbWwvMjAyMC8yLzExLzU0Cj4gCj4gCj4gSG93ZXZlciwg c3VwcG9ydGluZyB2U1ZBIGluIGd1ZXN0IGlzIGFsc28gYSBrZXkgY29tcG9uZW50IGZvciBhY2Nl bGVyYXRvci4KPiAKPiBMb29raW5nIGZvcndhcmQgdGhpcyBnb2luZyB0byBiZSBoYXBwZW4uCj4g Cj4gCj4gQW55IHJlc3BpbiwgSSB3aWxsIGJlIHZlcnkgaGFwcHkgdG8gdGVzdC4KCk9LLiBCYXNl ZCBvbiB5b3VyIGludGVyZXN0IGFuZCBNYXJ2ZWxsJ3MgaW50ZXJlc3QgdG9vLCBJIHdpbGwgcmVz cGluCmJvdGggaW9tbXUgJiB2ZmlvIHNlcmllcy4KClRoYW5rcwoKRXJpYwo+IAo+IAo+IFRoYW5r cwo+IAo+IAo+IAo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3Jn Cmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11