From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH] drm/i915: Use the existing pages when retrying to DMA map Date: Tue, 20 Dec 2016 14:21:18 +0000 Message-ID: <05286733-3915-f0d9-e4ae-e0e6f586ea58@linux.intel.com> References: <1482241367-17465-1-git-send-email-tvrtko.ursulin@linux.intel.com> <20161220141414.GF1046@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 47E136EE6B for ; Tue, 20 Dec 2016 14:21:21 +0000 (UTC) In-Reply-To: <20161220141414.GF1046@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , Tvrtko Ursulin , Intel-gfx@lists.freedesktop.org, Tvrtko Ursulin List-Id: intel-gfx@lists.freedesktop.org Ck9uIDIwLzEyLzIwMTYgMTQ6MTQsIENocmlzIFdpbHNvbiB3cm90ZToKPiBPbiBUdWUsIERlYyAy MCwgMjAxNiBhdCAwMTo0Mjo0N1BNICswMDAwLCBUdnJ0a28gVXJzdWxpbiB3cm90ZToKPj4gRnJv bTogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KPj4KPj4gUmF0aGVy IHRoYW4gZnJlZWluZyBhbmQgcmUtYWxsb2NhdGluZyB0aGUgcGFnZXMgd2hlbiBETUEgbWFwcGlu Zwo+PiBpbiBsYXJnZSBjaHVua3MgZmFpbHMsIHdlIGNhbiBqdXN0IHJlYnVpbGQgdGhlIHNnIHRh YmxlIHdpdGggbm8KPj4gY29hbGVzY2luZy4KPgo+IFlvdSBhcmUgZnJlZWluZyBhbmQgcmVhbGxv Y2F0aW5nIHRoZSBwYWdlcyAtIEkgdGhvdWdodCB5b3UgbWVhbnQgdGhlCj4gc2dfdGFibGUuIFRo ZSBjb3N0IGZvciByZWNvdmVyaW5nIHRoZSBzaG1lbWZzIGFmdGVyIGFsbG9jYXRpb24vc3dhcGlu Cj4gYWxyZWFkeSBwZXJmb3JtZWQgaW4gdGhlIGZpcnN0IHBhc3Mgc2hvdWxkIGJlIGEgbG9vayB1 cCBpbiB0aGUgcmFkaXggdHJlZS4KPiBOb3Qgd29ycmlzb21lLgoKTWF5YmUgbm90LCBidXQgbG9v a3MgYSBiaXQgdW5zaWdodGx5IHRvIG1lLiBUaGlzIGlzIHNpbXBsZSBlbm91Z2ggYW5kIApvbmUg cmUtYWxsb2NhdGlvbiBsZXNzLiBGcm9tIGJvdGggcGFnZXMgYW5kIHNnIGVudHJpZXMsIHRvIGp1 c3QgdGhlIHNnIAplbnRyaWVzLgoKPj4gQWxzbyBjaGFuZ2UgYmFjayB0aGUgcGFnZSBjb3VudGVy IHRvIHVuc2lnbmVkIGludCBiZWNhdXNlIHRoYXQKPj4gaXMgd2hhdCB0aGUgc2cgQVBJIHN1cHBv cnRzLgo+Cj4gUmF0aGVyIGdvIHRoZSBvdGhlciB3YXkgYW5kIHN0YXJ0IHJlcG9ydGluZyBhbiBl cnJvciB3aGVuIHdlIG92ZXJmbG93Lgo+IEJlaW5nIHN0cmljdCBhbGwgcGFnZV9jb3VudHMgc2hv dWxkIGJlIHU2NC4gOnwKCkFzIEkgd3JvdGUgaW4gdGhlIG90aGVyIHRocmVhZCwgdGhhdCdzIGFs cmVhZHkgaW4gCmk5MTVfZ2VtX29iamVjdF9jcmVhdGUuIEFkZGVkIHRoZXJlIGF0IHRoZSB0aW1l IHdoZW4gSSBzcG90dGVkIHRoZSAKc2dfYWxsb2NfdGFibGUgdW5zaWduZWQgaW50IGJ1c2luZXNz LgoKPj4gU2lnbmVkLW9mZi1ieTogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVs LmNvbT4KPj4gQ2M6IENocmlzIFdpbHNvbiA8Y2hyaXNAY2hyaXMtd2lsc29uLmNvLnVrPgo+PiAt LS0KPj4gT25seSBjb21waWxlIHRlc3RlZCEKPj4gLS0tCj4+ICBkcml2ZXJzL2dwdS9kcm0vaTkx NS9pOTE1X2dlbS5jIHwgNDAgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrLS0tLS0tLS0t LQo+PiAgMSBmaWxlIGNoYW5nZWQsIDMwIGluc2VydGlvbnMoKyksIDEwIGRlbGV0aW9ucygtKQo+ Pgo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYyBiL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKPj4gaW5kZXggNTI3NWY2MjQ4Y2UzLi5lNzNmOWY1 YTVkMjMgMTAwNjQ0Cj4+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKPj4g KysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+PiBAQCAtMjM0MCwxMiArMjM0 MCwzNiBAQCBzdGF0aWMgdm9pZCBpOTE1X3NnX3RyaW0oc3RydWN0IHNnX3RhYmxlICpvcmlnX3N0 KQo+PiAgCSpvcmlnX3N0ID0gbmV3X3N0Owo+PiAgfQo+Pgo+PiArc3RhdGljIHZvaWQgaTkxNV9z Z191bmNvYWxlc2NlKHN0cnVjdCBzZ190YWJsZSAqb3JpZ19zdCwgdW5zaWduZWQgbG9uZyBuZW50 cykKPj4gK3sKPj4gKwlzdHJ1Y3Qgc2dfdGFibGUgbmV3X3N0Owo+PiArCXN0cnVjdCBzY2F0dGVy bGlzdCAqbmV3X3NnOwo+PiArCXN0cnVjdCBzZ3RfaXRlciBzZ3RfaXRlcjsKPj4gKwlzdHJ1Y3Qg cGFnZSAqcGFnZTsKPj4gKwo+PiArCWlmIChzZ19hbGxvY190YWJsZSgmbmV3X3N0LCBuZW50cywg R0ZQX0tFUk5FTCkpCj4+ICsJCXJldHVybjsKPgo+IEkgd2FzIGhvcGluZyBmb3IgYSB3YXkgdG8g dXNlIHRoZSBwYWdlcyBhbHJlYWR5IGFsbG9jYXRlZC4gRmVlbHMKPiBwb3NzaWJsZSwganVzdCBy ZXZlcnNpbmcgdGhlIGNoYWluIGFuZCB3YWxraW5nIGJhY2t3YXJkcyB3aWxsIGJlIGZ1bi4KCkZv ciBhIHJhaW55IGRheSBhcyB5b3Ugc2FpZC4gOikKCj4KPj4gKwluZXdfc2cgPSBuZXdfc3Quc2ds Owo+PiArCWZvcl9lYWNoX3NndF9wYWdlKHBhZ2UsIHNndF9pdGVyLCBvcmlnX3N0KSB7Cj4+ICsJ CXNnX3NldF9wYWdlKG5ld19zZywgcGFnZSwgUEFHRV9TSVpFLCAwKTsKPj4gKwkJLyogY2FsbGVk IGJlZm9yZSBiZWluZyBETUEgbWFwcGVkLCBubyBuZWVkIHRvIGNvcHkgc2ctPmRtYV8qICovCj4+ ICsJCW5ld19zZyA9IHNnX25leHQobmV3X3NnKTsKPj4gKwl9Cj4+ICsKPj4gKwlHRU1fQlVHX09O KG5ld19zZyk7IC8qIFNob3VsZCB3YWxrIGV4YWN0bHkgbmVudHMgYW5kIGhpdCB0aGUgZW5kICov Cj4+ICsKPj4gKwlzZ19mcmVlX3RhYmxlKG9yaWdfc3QpOwo+PiArCj4+ICsJKm9yaWdfc3QgPSBu ZXdfc3Q7Cj4+ICt9Cj4KClJlZ2FyZHMsCgpUdnJ0a28KX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhA bGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxt YW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==