From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: Re: [PATCH 4/5] drm/tegra: Restrict IOVA space to DMA mask Date: Wed, 23 Jan 2019 16:41:44 +0300 Message-ID: <314d2386-3d1b-dda0-3d5e-b277d8c09045@gmail.com> References: <20190123093951.24908-1-thierry.reding@gmail.com> <20190123093951.24908-5-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190123093951.24908-5-thierry.reding@gmail.com> 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: Thierry Reding Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, Mikko Perttunen List-Id: linux-tegra@vger.kernel.org MjMuMDEuMjAxOSAxMjozOSwgVGhpZXJyeSBSZWRpbmcg0L/QuNGI0LXRgjoKPiBGcm9tOiBUaGll cnJ5IFJlZGluZyA8dHJlZGluZ0BudmlkaWEuY29tPgo+IAo+IE9uIFRlZ3JhMTg2IGFuZCBsYXRl ciwgdGhlIEFSTSBTTU1VIHByb3ZpZGVzIGFuIGlucHV0IGFkZHJlc3Mgc3BhY2UgdGhhdAo+IGlz IDQ4IGJpdHMgd2lkZS4gSG93ZXZlciwgbWVtb3J5IGNsaWVudHMgY2FuIG9ubHkgYWRkcmVzcyB1 cCB0byA0MCBiaXRzLgo+IElmIHRoZSBnZW9tZXRyeSBpcyB1c2VkIGFzLWlzLCBhbGxvY2F0aW9u cyBvZiBJT1ZBIHNwYWNlIGNhbiBlbmQgdXAgaW4gYQo+IHJlZ2lvbiB0aGF0IGNhbm5vdCBiZSBh ZGRyZXNzZWQgYnkgdGhlIG1lbW9yeSBjbGllbnRzLgo+IAo+IFRvIGZpeCB0aGlzLCByZXN0cmlj dCB0aGUgSU9WQSBzcGFjZSB0byB0aGUgRE1BIG1hc2sgb2YgdGhlIGhvc3QxeAo+IGRldmljZS4g Tm90ZSB0aGF0LCB0ZWNobmljYWxseSwgdGhlIElPVkEgc3BhY2UgbmVlZHMgdG8gYmUgcmVzdHJp Y3RlZCB0bwo+IHRoZSBpbnRlcnNlY3Rpb24gb2YgdGhlIERNQSBtYXNrcyBmb3IgYWxsIGNsaWVu dHMgdGhhdCBhcmUgYXR0YWNoZWQgdG8KPiB0aGUgSU9NTVUgZG9tYWluLiBJbiBwcmFjdGljZSB1 c2luZyB0aGUgRE1BIG1hc2sgb2YgdGhlIGhvc3QxeCBkZXZpY2UgaXMKPiBzdWZmaWNpZW50IGJl Y2F1c2UgYWxsIGhvc3QxeCBjbGllbnRzIHNoYXJlIHRoZSBzYW1lIERNQSBtYXNrLgo+IAo+IFNp Z25lZC1vZmYtYnk6IFRoaWVycnkgUmVkaW5nIDx0cmVkaW5nQG52aWRpYS5jb20+Cj4gLS0tCj4g IGRyaXZlcnMvZ3B1L2RybS90ZWdyYS9kcm0uYyB8IDUgKysrLS0KPiAgMSBmaWxlIGNoYW5nZWQs IDMgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVy cy9ncHUvZHJtL3RlZ3JhL2RybS5jIGIvZHJpdmVycy9ncHUvZHJtL3RlZ3JhL2RybS5jCj4gaW5k ZXggMjcxYzdhNWZjOTU0Li4wYzVmMWU2YTA0NDYgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUv ZHJtL3RlZ3JhL2RybS5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL3RlZ3JhL2RybS5jCj4gQEAg LTEzNiwxMSArMTM2LDEyIEBAIHN0YXRpYyBpbnQgdGVncmFfZHJtX2xvYWQoc3RydWN0IGRybV9k ZXZpY2UgKmRybSwgdW5zaWduZWQgbG9uZyBmbGFncykKPiAgCj4gIAlpZiAodGVncmEtPmRvbWFp bikgewo+ICAJCXU2NCBjYXJ2ZW91dF9zdGFydCwgY2FydmVvdXRfZW5kLCBnZW1fc3RhcnQsIGdl bV9lbmQ7Cj4gKwkJdTY0IGRtYV9tYXNrID0gZG1hX2dldF9tYXNrKCZkZXZpY2UtPmRldik7Cj4g IAkJZG1hX2FkZHJfdCBzdGFydCwgZW5kOwo+ICAJCXVuc2lnbmVkIGxvbmcgb3JkZXI7Cj4gIAo+ IC0JCXN0YXJ0ID0gdGVncmEtPmRvbWFpbi0+Z2VvbWV0cnkuYXBlcnR1cmVfc3RhcnQ7Cj4gLQkJ ZW5kID0gdGVncmEtPmRvbWFpbi0+Z2VvbWV0cnkuYXBlcnR1cmVfZW5kOwo+ICsJCXN0YXJ0ID0g dGVncmEtPmRvbWFpbi0+Z2VvbWV0cnkuYXBlcnR1cmVfc3RhcnQgJiBkbWFfbWFzazsKPiArCQll bmQgPSB0ZWdyYS0+ZG9tYWluLT5nZW9tZXRyeS5hcGVydHVyZV9lbmQgJiBkbWFfbWFzazsKPiAg Cj4gIAkJZ2VtX3N0YXJ0ID0gc3RhcnQ7Cj4gIAkJZ2VtX2VuZCA9IGVuZCAtIENBUlZFT1VUX1Na Owo+IAoKV293LCBzbyBJT1ZBIGNvdWxkIGFkZHJlc3MgPjMyYml0cyBvbiBsYXRlciBUZWdyYSdz LiBBRkFJSywgY3VycmVudGx5IHRoZXJlIGlzIG5vIHN1cHBvcnQgZm9yIGEgcHJvcGVyIHByb2dy YW1taW5nIG9mIHRoZSA2NGJpdCBhZGRyZXNzZXMgaW4gdGhlIGRyaXZlcnMgY29kZSwgaGVuY2Uu LiB3b24ndCBpdCBtYWtlIHNlbnNlIHRvIGZvcmNlIElPVkEgbWFzayB0byAzMmJpdCBmb3Igbm93 IGFuZCBob3BlIHRoYXQgdGhlIHNlY29uZCBoYWx2ZSBvZiBhZGRyZXNzIHJlZ2lzdGVycyBoYXBw ZW4gdG8gYmUgMHgwMDAwMDAwMCBpbiBIVz8KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMu ZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlz dGluZm8vZHJpLWRldmVsCg==