From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Murphy Subject: Re: [PATCH 08/11] drm/nouveau: tegra: Skip IOMMU initialization if already attached Date: Mon, 16 Sep 2019 17:15:25 +0100 Message-ID: References: <20190916150412.10025-1-thierry.reding@gmail.com> <20190916150412.10025-9-thierry.reding@gmail.com> <156993ea-ece6-9eb5-b664-a55c631e2600@arm.com> <20190916155724.GG7488@ulmo> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190916155724.GG7488@ulmo> Content-Language: en-GB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Thierry Reding Cc: linux-tegra@vger.kernel.org, nouveau@lists.freedesktop.org, Ben Skeggs , dri-devel@lists.freedesktop.org List-Id: linux-tegra@vger.kernel.org T24gMTYvMDkvMjAxOSAxNjo1NywgVGhpZXJyeSBSZWRpbmcgd3JvdGU6Cj4gT24gTW9uLCBTZXAg MTYsIDIwMTkgYXQgMDQ6Mjk6MThQTSArMDEwMCwgUm9iaW4gTXVycGh5IHdyb3RlOgo+PiBIaSBU aGllcnJ5LAo+Pgo+PiBPbiAxNi8wOS8yMDE5IDE2OjA0LCBUaGllcnJ5IFJlZGluZyB3cm90ZToK Pj4+IEZyb206IFRoaWVycnkgUmVkaW5nIDx0cmVkaW5nQG52aWRpYS5jb20+Cj4+Pgo+Pj4gSWYg dGhlIEdQVSBpcyBhbHJlYWR5IGF0dGFjaGVkIHRvIGFuIElPTU1VLCBkb24ndCBkZXRhY2ggaXQg YW5kIHNldHVwIGFuCj4+PiBleHBsaWNpdCBJT01NVSBkb21haW4uIFNpbmNlIE5vdXZlYXUgY2Fu IG5vdyBwcm9wZXJseSBoYW5kbGUgdGhlIGNhc2Ugb2YKPj4+IHRoZSBETUEgQVBJIGJlaW5nIGJh Y2tlZCBieSBhbiBJT01NVSwganVzdCBjb250aW51ZSB1c2luZyB0aGUgRE1BIEFQSS4KPj4+Cj4+ PiBTaWduZWQtb2ZmLWJ5OiBUaGllcnJ5IFJlZGluZyA8dHJlZGluZ0BudmlkaWEuY29tPgo+Pj4g LS0tCj4+PiAgICAuLi4vZHJtL25vdXZlYXUvbnZrbS9lbmdpbmUvZGV2aWNlL3RlZ3JhLmMgICAg fCAxOSArKysrKysrLS0tLS0tLS0tLS0tCj4+PiAgICAxIGZpbGUgY2hhbmdlZCwgNyBpbnNlcnRp b25zKCspLCAxMiBkZWxldGlvbnMoLSkKPj4+Cj4+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUv ZHJtL25vdXZlYXUvbnZrbS9lbmdpbmUvZGV2aWNlL3RlZ3JhLmMgYi9kcml2ZXJzL2dwdS9kcm0v bm91dmVhdS9udmttL2VuZ2luZS9kZXZpY2UvdGVncmEuYwo+Pj4gaW5kZXggZDBkNTJjMWQ0YWVl Li5mYzY1MmFhYTQxYzcgMTAwNjQ0Cj4+PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vbm91dmVhdS9u dmttL2VuZ2luZS9kZXZpY2UvdGVncmEuYwo+Pj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL25vdXZl YXUvbnZrbS9lbmdpbmUvZGV2aWNlL3RlZ3JhLmMKPj4+IEBAIC0yMywxMCArMjMsNiBAQAo+Pj4g ICAgI2lmZGVmIENPTkZJR19OT1VWRUFVX1BMQVRGT1JNX0RSSVZFUgo+Pj4gICAgI2luY2x1ZGUg InByaXYuaCIKPj4+IC0jaWYgSVNfRU5BQkxFRChDT05GSUdfQVJNX0RNQV9VU0VfSU9NTVUpCj4+ PiAtI2luY2x1ZGUgPGFzbS9kbWEtaW9tbXUuaD4KPj4+IC0jZW5kaWYKPj4+IC0KPj4+ICAgIHN0 YXRpYyBpbnQKPj4+ICAgIG52a21fZGV2aWNlX3RlZ3JhX3Bvd2VyX3VwKHN0cnVjdCBudmttX2Rl dmljZV90ZWdyYSAqdGRldikKPj4+ICAgIHsKPj4+IEBAIC0xMDksMTQgKzEwNSwxMyBAQCBudmtt X2RldmljZV90ZWdyYV9wcm9iZV9pb21tdShzdHJ1Y3QgbnZrbV9kZXZpY2VfdGVncmEgKnRkZXYp Cj4+PiAgICAJdW5zaWduZWQgbG9uZyBwZ3NpemVfYml0bWFwOwo+Pj4gICAgCWludCByZXQ7Cj4+ PiAtI2lmIElTX0VOQUJMRUQoQ09ORklHX0FSTV9ETUFfVVNFX0lPTU1VKQo+Pj4gLQlpZiAoZGV2 LT5hcmNoZGF0YS5tYXBwaW5nKSB7Cj4+PiAtCQlzdHJ1Y3QgZG1hX2lvbW11X21hcHBpbmcgKm1h cHBpbmcgPSB0b19kbWFfaW9tbXVfbWFwcGluZyhkZXYpOwo+Pj4gLQo+Pj4gLQkJYXJtX2lvbW11 X2RldGFjaF9kZXZpY2UoZGV2KTsKPj4+IC0JCWFybV9pb21tdV9yZWxlYXNlX21hcHBpbmcobWFw cGluZyk7Cj4+PiAtCX0KPj4+IC0jZW5kaWYKPj4+ICsJLyoKPj4+ICsJICogU2tpcCBleHBsaWNp dCBJT01NVSBpbml0aWFsaXphdGlvbiBpZiB0aGUgR1BVIGlzIGFscmVhZHkgYXR0YWNoZWQKPj4+ ICsJICogdG8gYW4gSU9NTVUgZG9tYWluLiBUaGlzIGNhbiBoYXBwZW4gaWYgdGhlIERNQSBBUEkg aXMgYmFja2VkIGJ5IGFuCj4+PiArCSAqIElPTU1VLgo+Pj4gKwkgKi8KPj4+ICsJaWYgKGlvbW11 X2dldF9kb21haW5fZm9yX2RldihkZXYpKQo+Pj4gKwkJcmV0dXJuOwo+Pgo+PiBCZXdhcmUgb2Yg ImlvbW11LnBhc3N0aHJvdWdoPTEiIC0geW91IGNvdWxkIGdldCBhIHZhbGlkIGRlZmF1bHQgZG9t YWluIGhlcmUKPj4geWV0IHN0aWxsIGhhdmUgZGlyZWN0L1NXSU9UTEIgRE1BIG9wcy4gSSBndWVz cyB5b3UgcHJvYmFibHkgd2FudCB0bwo+PiBkb3VibGUtY2hlY2sgdGhlIGRvbWFpbiB0eXBlIGFz IHdlbGwuCj4gCj4gR29vZCBwb2ludC4gQW4gZWFybGllciB2ZXJzaW9uIG9mIHRoaXMgcGF0Y2gg aGFkIGFuIGFkZGl0aW9uYWwgY2hlY2sgZm9yCj4gSU9NTVVfRE9NQUlOX0RNQSwgYnV0IHRoZW4g dGhhdCBmYWlsZWQgb24gMzItYml0IEFSTSBiZWNhdXNlIHRoZXJlIHRoZQo+IERNQSBBUEkgY2Fu IGFsc28gdXNlIElPTU1VX0RPTUFJTl9VTk1BTkFHRUQgdHlwZSBkb21haW5zLiBDaGVja2luZyBm b3IKPiBJT01NVV9ET01BSU5fSURFTlRJRlkgc2hvdWxkIGJlIHNhZmUsIHRob3VnaC4gVGhhdCBk b2Vzbid0IHNlZW0gdG8KPiBhcHBlYXIgaW4gYXJjaC9hcm0sIGFyY2gvYXJtNjQgb3IgZHJpdmVy cy9pb21tdS9kbWEtaW9tbXUuYy4KClJpZ2h0LCAiZG9tYWluICYmIGRvbWFpbi0+dHlwZSAhPSBJ T01NVV9ET01BSU5fSURFTlRJVFkiIHNob3VsZCBiZSAKc3VmZmljaWVudCB0byBhbnN3ZXIgImlz IHRoZSBETUEgbGF5ZXIgbWFuYWdpbmcgbXkgYWRkcmVzcyBzcGFjZSBmb3IgCm1lPyIgdW5sZXNz IGFuZCB1bnRpbCBzb21lIG1hc3NpdmUgQVBJIGNoYW5nZSBoYXBwZW5zICh3aGljaCBJIGNlcnRh aW5seSAKZG9uJ3QgZm9yZXNlZSkuCgpSb2Jpbi4KX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4v bGlzdGluZm8vZHJpLWRldmVs