From mboxrd@z Thu Jan  1 00:00:00 1970
From: Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH 08/11] drm/nouveau: tegra: Skip IOMMU initialization if
 already attached
Date: Mon, 16 Sep 2019 16:29:18 +0100
Message-ID: <156993ea-ece6-9eb5-b664-a55c631e2600@arm.com>
References: <20190916150412.10025-1-thierry.reding@gmail.com>
 <20190916150412.10025-9-thierry.reding@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
In-Reply-To: <20190916150412.10025-9-thierry.reding@gmail.com>
Content-Language: en-GB
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Thierry Reding <thierry.reding@gmail.com>, Ben Skeggs <bskeggs@redhat.com>
Cc: linux-tegra@vger.kernel.org, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org
List-Id: linux-tegra@vger.kernel.org

SGkgVGhpZXJyeSwKCk9uIDE2LzA5LzIwMTkgMTY6MDQsIFRoaWVycnkgUmVkaW5nIHdyb3RlOgo+
IEZyb206IFRoaWVycnkgUmVkaW5nIDx0cmVkaW5nQG52aWRpYS5jb20+Cj4gCj4gSWYgdGhlIEdQ
VSBpcyBhbHJlYWR5IGF0dGFjaGVkIHRvIGFuIElPTU1VLCBkb24ndCBkZXRhY2ggaXQgYW5kIHNl
dHVwIGFuCj4gZXhwbGljaXQgSU9NTVUgZG9tYWluLiBTaW5jZSBOb3V2ZWF1IGNhbiBub3cgcHJv
cGVybHkgaGFuZGxlIHRoZSBjYXNlIG9mCj4gdGhlIERNQSBBUEkgYmVpbmcgYmFja2VkIGJ5IGFu
IElPTU1VLCBqdXN0IGNvbnRpbnVlIHVzaW5nIHRoZSBETUEgQVBJLgo+IAo+IFNpZ25lZC1vZmYt
Ynk6IFRoaWVycnkgUmVkaW5nIDx0cmVkaW5nQG52aWRpYS5jb20+Cj4gLS0tCj4gICAuLi4vZHJt
L25vdXZlYXUvbnZrbS9lbmdpbmUvZGV2aWNlL3RlZ3JhLmMgICAgfCAxOSArKysrKysrLS0tLS0t
LS0tLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgNyBpbnNlcnRpb25zKCspLCAxMiBkZWxldGlvbnMo
LSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbnZrbS9lbmdpbmUv
ZGV2aWNlL3RlZ3JhLmMgYi9kcml2ZXJzL2dwdS9kcm0vbm91dmVhdS9udmttL2VuZ2luZS9kZXZp
Y2UvdGVncmEuYwo+IGluZGV4IGQwZDUyYzFkNGFlZS4uZmM2NTJhYWE0MWM3IDEwMDY0NAo+IC0t
LSBhL2RyaXZlcnMvZ3B1L2RybS9ub3V2ZWF1L252a20vZW5naW5lL2RldmljZS90ZWdyYS5jCj4g
KysrIGIvZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbnZrbS9lbmdpbmUvZGV2aWNlL3RlZ3JhLmMK
PiBAQCAtMjMsMTAgKzIzLDYgQEAKPiAgICNpZmRlZiBDT05GSUdfTk9VVkVBVV9QTEFURk9STV9E
UklWRVIKPiAgICNpbmNsdWRlICJwcml2LmgiCj4gICAKPiAtI2lmIElTX0VOQUJMRUQoQ09ORklH
X0FSTV9ETUFfVVNFX0lPTU1VKQo+IC0jaW5jbHVkZSA8YXNtL2RtYS1pb21tdS5oPgo+IC0jZW5k
aWYKPiAtCj4gICBzdGF0aWMgaW50Cj4gICBudmttX2RldmljZV90ZWdyYV9wb3dlcl91cChzdHJ1
Y3QgbnZrbV9kZXZpY2VfdGVncmEgKnRkZXYpCj4gICB7Cj4gQEAgLTEwOSwxNCArMTA1LDEzIEBA
IG52a21fZGV2aWNlX3RlZ3JhX3Byb2JlX2lvbW11KHN0cnVjdCBudmttX2RldmljZV90ZWdyYSAq
dGRldikKPiAgIAl1bnNpZ25lZCBsb25nIHBnc2l6ZV9iaXRtYXA7Cj4gICAJaW50IHJldDsKPiAg
IAo+IC0jaWYgSVNfRU5BQkxFRChDT05GSUdfQVJNX0RNQV9VU0VfSU9NTVUpCj4gLQlpZiAoZGV2
LT5hcmNoZGF0YS5tYXBwaW5nKSB7Cj4gLQkJc3RydWN0IGRtYV9pb21tdV9tYXBwaW5nICptYXBw
aW5nID0gdG9fZG1hX2lvbW11X21hcHBpbmcoZGV2KTsKPiAtCj4gLQkJYXJtX2lvbW11X2RldGFj
aF9kZXZpY2UoZGV2KTsKPiAtCQlhcm1faW9tbXVfcmVsZWFzZV9tYXBwaW5nKG1hcHBpbmcpOwo+
IC0JfQo+IC0jZW5kaWYKPiArCS8qCj4gKwkgKiBTa2lwIGV4cGxpY2l0IElPTU1VIGluaXRpYWxp
emF0aW9uIGlmIHRoZSBHUFUgaXMgYWxyZWFkeSBhdHRhY2hlZAo+ICsJICogdG8gYW4gSU9NTVUg
ZG9tYWluLiBUaGlzIGNhbiBoYXBwZW4gaWYgdGhlIERNQSBBUEkgaXMgYmFja2VkIGJ5IGFuCj4g
KwkgKiBJT01NVS4KPiArCSAqLwo+ICsJaWYgKGlvbW11X2dldF9kb21haW5fZm9yX2RldihkZXYp
KQo+ICsJCXJldHVybjsKCkJld2FyZSBvZiAiaW9tbXUucGFzc3Rocm91Z2g9MSIgLSB5b3UgY291
bGQgZ2V0IGEgdmFsaWQgZGVmYXVsdCBkb21haW4gCmhlcmUgeWV0IHN0aWxsIGhhdmUgZGlyZWN0
L1NXSU9UTEIgRE1BIG9wcy4gSSBndWVzcyB5b3UgcHJvYmFibHkgd2FudCB0byAKZG91YmxlLWNo
ZWNrIHRoZSBkb21haW4gdHlwZSBhcyB3ZWxsLgoKUm9iaW4uCgo+ICAgCj4gICAJaWYgKCF0ZGV2
LT5mdW5jLT5pb21tdV9iaXQpCj4gICAJCXJldHVybjsKPiAKX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2
ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21h
aWxtYW4vbGlzdGluZm8vZHJpLWRldmVs