From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wilson <chris@chris-wilson.co.uk>
Subject: Re: [PATCH 3/3] drm/i915: Move ioremap_wc tracking onto
 VMA
Date: Wed, 13 Apr 2016 13:44:51 +0100
Message-ID: <20160413124451.GF15577@nuc-i3427.alporthouse.com>
References: <1460541160-1955-1-git-send-email-chris@chris-wilson.co.uk>
 <1460541160-1955-3-git-send-email-chris@chris-wilson.co.uk>
 <570E3BEF.6070804@linux.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from fireflyinternet.com (mail.fireflyinternet.com [87.106.93.118])
 by gabe.freedesktop.org (Postfix) with ESMTP id 04F616E8BF
 for <intel-gfx@lists.freedesktop.org>; Wed, 13 Apr 2016 12:44:55 +0000 (UTC)
Content-Disposition: inline
In-Reply-To: <570E3BEF.6070804@linux.intel.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

T24gV2VkLCBBcHIgMTMsIDIwMTYgYXQgMDE6MzA6MzlQTSArMDEwMCwgVHZydGtvIFVyc3VsaW4g
d3JvdGU6Cj4gQXMgbG9uZyBhcyBpdCByZW1haW5zIGhpZGRlbiBpbiBoZXJlLCBvdGhlcndpc2Ug
aXMgYSBiaXQgaGVhdnkgYW5kCj4gcnVkZSAoQlVHX09OKSwgb3Igd2VhayBhcyBBUEkgKGlmIGNv
bnZlcnRlZCB0byBHRU1fQlVHX09OIGFuZCByZXR1cm4KPiBwb2ludGVyIHVuZG9jdW1lbnRlZCku
IEFuZCBpZiBpdCBzdGF5cyBoZXJlIEJVR19PTiBpcyByZWR1bmRhbnQuCj4gSG0uLiBsZWFuaW5n
IHRvd2FyZHMgdGhlIGRpcmVjdCBjb250YWluZXJfb2YgYmVsb3cgdG8gYnlwYXNzIGFsbAo+IHRo
ZXNlIGNvbnNpZGVyYXRpb25zLgoKUmVhc29uYWJsZS4gSSBkbyB2YWx1ZSB0aGUgc2hvcnRoYW5k
IHRvX2dndHQoKSB0aG91Z2guIE9rLCB0aGUgc2hvcnRoYW5kCmNhbiB3YWl0IHVudGlsIHdlIGhh
dmUgbW9yZSB1c2UgY2FzZXMuCgo+ID4gIHN0YXRpYyBpbnQKPiA+ICBpOTE1X2dldF9nZ3R0X3Zt
YV9wYWdlcyhzdHJ1Y3QgaTkxNV92bWEgKnZtYSk7Cj4gPgo+ID5AQCAtMzYyNiwzICszNjMyLDM5
IEBAIGk5MTVfZ2d0dF92aWV3X3NpemUoc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKm9iaiwK
PiA+ICAJCXJldHVybiBvYmotPmJhc2Uuc2l6ZTsKPiA+ICAJfQo+ID4gIH0KPiA+Kwo+ID4rdm9p
ZCAqaTkxNV92bWFfaW9tYXAoc3RydWN0IGk5MTVfdm1hICp2bWEpCj4gCj4gS2VybmVsZG9jISA6
KQoKU29ycnkuIFNob3VsZCBoYXZlIGRvdWJsZSBjaGVja2VkIHdpdGggeW91ciBwYXRjaC4KCj4g
Pit7Cj4gPisJaWYgKFdBUk5fT04oIXZtYS0+b2JqLT5tYXBfYW5kX2ZlbmNlYWJsZSkpCj4gPisJ
CXJldHVybiBFUlJfUFRSKC1FTk9ERVYpOwo+ID4rCj4gPisJQlVHX09OKCF2bWEtPmlzX2dndHQp
Owo+ID4rCUJVR19PTigodm1hLT5ib3VuZCAmIEdMT0JBTF9CSU5EKSA9PSAwKTsKPiAKPiBNYXli
ZSBhZ2dyZWdhdGUgdGhlIHR3byBpbnRvIGEgc2luZ2xlIFdBUk5fT04gYW5kIHJldHVybiAtRUlO
VkFMID8KPiBTaW5jZSB3ZSBlYXNpbHkgY2FuIHNvdW5kcyBiZXR0ZXIuCj4gCj4gPisKPiA+Kwlp
ZiAodm1hLT5pb21hcCA9PSBOVUxMKSB7Cj4gPisJCXN0cnVjdCBpOTE1X2dndHQgKmdndHQgPSB0
b19nZ3R0KHZtYS0+dm0pOwo+ID4rCQl2b2lkICpwdHI7Cj4gPisKPiA+KwkJcHRyID0gaW9fbWFw
cGluZ19tYXBfd2MoZ2d0dC0+bWFwcGFibGUsCj4gPisJCQkJCXZtYS0+bm9kZS5zdGFydCwKPiA+
KwkJCQkJdm1hLT5ub2RlLnNpemUpOwo+ID4rCQlpZiAocHRyID09IE5VTEwpIHsKPiA+KwkJCWlu
dCByZXQ7Cj4gPisKPiA+KwkJCS8qIFRvbyBtYW55IGFyZWFzIGFscmVhZHkgYWxsb2NhdGVkPyAq
Lwo+ID4rCQkJcmV0ID0gaTkxNV9nZW1fZXZpY3Rfdm0odm1hLT52bSwgdHJ1ZSk7Cj4gCj4gSSBk
b24ndCBrbm93IG11Y2ggYWJvdXQgdGhlIGlvbWFwcGluZyBidXNzaW5lc3MuIENhbiB3ZSBleGhh
dXN0IHRoZQo+IGFkZHJlc3Mgc3BhY2Ugc2ltaWxhciB0byB2bWFwIGFuZCB3b3VsZCB0aGVuIGlu
dGVyZmVyZSB3aXRoIG91ciBvd24KPiAob3Igb3RoZXI/KSBjYWxsIHNpdGVzIGRvaW5nIHBsYWlu
IGlvX21hcHBpbmdfbWFwKiBjYWxscz8KCkl0J3Mgdm1hcCB1bmRlcm5lYXRoLiBNeSB0aGlua2lu
ZyBoZXJlIHdhcyB0aGF0IGlmIHdlIGNvdWxkbid0IGFsbG9jYXRlCmEgbmV3IGlvcmVtYXBfd2Ms
IHRoZSBvYnZpb3VzIGNhbmRpZGF0ZXMgd2VyZSB0byByZWFwIGV2ZXJ5dGhpbmcgaW5zaWRlCnRo
ZSBHR1RUIGkuZS4gaW5hY3RpdmUgaW9yZW1hcF93Yy4KCkJ1dCB0aGUgcXVlc3Rpb24gaXMsIGRv
IHdlIHdhbnQgdG8gcmVhcCB2bWEtPmlvbWFwcyB1cG9uIHZtYXBfcHVyZ2UuClllcywgd2UgcHJv
YmFibHkgc2hvdWxkIC0gc2ltcGxlc3Qgd2lsbCBiZSB0byBkbyBhIHNpbWlsYXIgZm9yY2VkIEdH
VFQKZXZpY3Rpb24gZnJvbSB2bWFwX3B1cmdlIGFuZCByZWZpbmUgZnJvbSB0aGVyZS4KCj4gPisJ
dm1hID0gaTkxNV9nZW1fb2JqX3RvX2dndHQob2JqKTsKPiA+Kwo+ID4gIAkvKiBzZXR1cCBhcGVy
dHVyZSBiYXNlL3NpemUgZm9yIHZlc2FmYiB0YWtlb3ZlciAqLwo+ID4gIAlpbmZvLT5hcGVydHVy
ZXMtPnJhbmdlc1swXS5iYXNlID0gZGV2LT5tb2RlX2NvbmZpZy5mYl9iYXNlOwo+ID4gIAlpbmZv
LT5hcGVydHVyZXMtPnJhbmdlc1swXS5zaXplID0gZ2d0dC0+bWFwcGFibGVfZW5kOwo+ID4KPiA+
LQlpbmZvLT5maXguc21lbV9zdGFydCA9IGRldi0+bW9kZV9jb25maWcuZmJfYmFzZSArIGk5MTVf
Z2VtX29ial9nZ3R0X29mZnNldChvYmopOwo+ID4tCWluZm8tPmZpeC5zbWVtX2xlbiA9IHNpemU7
Cj4gPisJaW5mby0+Zml4LnNtZW1fc3RhcnQgPSBkZXYtPm1vZGVfY29uZmlnLmZiX2Jhc2UgKyB2
bWEtPm5vZGUuc3RhcnQ7Cj4gPisJaW5mby0+Zml4LnNtZW1fbGVuID0gdm1hLT5ub2RlLnNpemU7
Cj4gPgo+ID4tCWluZm8tPnNjcmVlbl9iYXNlID0KPiA+LQkJaW9yZW1hcF93YyhnZ3R0LT5tYXBw
YWJsZV9iYXNlICsgaTkxNV9nZW1fb2JqX2dndHRfb2Zmc2V0KG9iaiksCj4gPi0JCQkgICBzaXpl
KTsKPiA+LQlpZiAoIWluZm8tPnNjcmVlbl9iYXNlKSB7Cj4gPisJaW5mby0+c2NyZWVuX2Jhc2Ug
PSBpOTE1X3ZtYV9pb21hcCh2bWEpOwo+IAo+IFdlIGFyZSBzbG93bHkgZXN0YWJsaXNoaW5nIHRo
YXQgRVJSX1BUUiBzaG91bGQgbm90IGJlIHN0b3JlZCBpbgo+IHN0cnVjdHVyZSBtZW1iZXJzIGJ1
dCBJIHN1cHBvc2UgaGVyZSB3ZSBjYW4gYWxsb3cgaXQgc2luY2UgdGhlCj4gc3RydWN0dXJlIGlz
IGZyZWVkIGlmIGl0IGZhaWxzLgoKSSBrbm93LCBJIHRlbGwgZXZlcnlvbmUgZWxzZSBvZmYgZm9y
IGRvaW5nIGl0IGxpa2UgdGhpcyBhcyB3ZWxsLgpQcmFjdGljZSB3aGF0IHlvdSBwcmVhY2ghCi1D
aHJpcwoKLS0gCkNocmlzIFdpbHNvbiwgSW50ZWwgT3BlbiBTb3VyY2UgVGVjaG5vbG9neSBDZW50
cmUKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwt
Z2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8v
bGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==