From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zanoni, Paulo R" Subject: Re: [PATCH] drm/i915/fbc: FBC causes display flicker when VT-d is enabled on Skylake Date: Fri, 17 Jun 2016 19:02:57 +0000 Message-ID: <1466190175.2901.67.camel@intel.com> References: <20160425082841.GI2510@phenom.ffwll.local> <1466181591-2984-1-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 4664F6ECAA for ; Fri, 17 Jun 2016 19:02:59 +0000 (UTC) In-Reply-To: <1466181591-2984-1-git-send-email-chris@chris-wilson.co.uk> Content-Language: en-US Content-ID: <63AE944C65F8A04F84CABF34F7986D7B@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: "intel-gfx@lists.freedesktop.org" , "chris@chris-wilson.co.uk" List-Id: intel-gfx@lists.freedesktop.org RW0gU2V4LCAyMDE2LTA2LTE3IMOgcyAxNzozOSArMDEwMCwgQ2hyaXMgV2lsc29uIGVzY3JldmV1 Og0KPiBFcnJhdHVtIFNLTDA3NTogRGlzcGxheSBGbGlja2VyIE1heSBPY2N1ciBXaGVuIEJvdGgg VlQtZCBBbmQgRkJDIEFyZQ0KPiBFbmFibGVkDQo+IA0KPiAiRGlzcGxheSBmbGlja2VyaW5nIG1h eSBvY2N1ciB3aGVuIGJvdGggRkJDIChGcmFtZSBCdWZmZXINCj4gQ29tcHJlc3Npb24pDQo+IGFu ZCBWVCAtIGQgKEludGVswq4gVmlydHVhbGl6YXRpb24gVGVjaG5vbG9neSBmb3IgRGlyZWN0ZWQg SS9PKSBhcmUNCj4gZW5hYmxlZA0KPiBhbmQgaW4gdXNlIGJ5IHRoZSBkaXNwbGF5IGNvbnRyb2xs ZXIuIg0KDQpPdWNoLi4uDQoNCj4gDQo+IFNpZ25lZC1vZmYtYnk6IENocmlzIFdpbHNvbiA8Y2hy aXNAY2hyaXMtd2lsc29uLmNvLnVrPg0KPiBDYzogUGF1bG8gWmFub25pIDxwYXVsby5yLnphbm9u aUBpbnRlbC5jb20+DQo+IC0tLQ0KPiDCoGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2ZiYy5j IHwgMTggKysrKysrKysrKysrKysrKysrDQo+IMKgMSBmaWxlIGNoYW5nZWQsIDE4IGluc2VydGlv bnMoKykNCj4gDQo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9mYmMu Yw0KPiBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2ZiYy5jDQo+IGluZGV4IGZkZGJhMWVl ZDVhZC4uZTQ3Nzg1NDY3MjIwIDEwMDY0NA0KPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9mYmMuYw0KPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9mYmMuYw0KPiBA QCAtMTIzMCw2ICsxMjMwLDE4IEBAIHZvaWQgaW50ZWxfZmJjX2luaXRfcGlwZV9zdGF0ZShzdHJ1 Y3QNCj4gZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYpDQo+IMKgCQkJZGV2X3ByaXYtPmZiYy52 aXNpYmxlX3BpcGVzX21hc2sgfD0gKDEgPDwNCj4gY3J0Yy0+cGlwZSk7DQo+IMKgfQ0KPiDCoA0K PiArc3RhdGljIGJvb2wgbmVlZF92dGRfd2Eoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9w cml2KQ0KDQpOb3RpY2Ugd2UgaGF2ZSBhIGZ1bmN0aW9uIHdpdGggdGhlIGV4YWN0IHNhbWUgbmFt ZSBpbiBpbnRlbF9kaXNwbGF5LmMuDQoNCj4gK3sNCj4gKyNpZmRlZiBDT05GSUdfSU5URUxfSU9N TVUNCj4gKwlpZiAoIWludGVsX2lvbW11X2dmeF9tYXBwZWQpDQo+ICsJCXJldHVybiBmYWxzZTsN Cj4gKw0KPiArCWlmIChJTlRFTF9HRU4oZGV2X3ByaXYpID09IDkpDQo+ICsJCXJldHVybiB0cnVl Ow0KPiArI2VuZGlmDQo+ICsJcmV0dXJuIGZhbHNlOw0KPiArfQ0KPiArDQo+IMKgLyoqDQo+IMKg ICogaW50ZWxfZmJjX2luaXQgLSBJbml0aWFsaXplIEZCQw0KPiDCoCAqIEBkZXZfcHJpdjogdGhl IGk5MTUgZGV2aWNlDQo+IEBAIC0xMjQ3LDYgKzEyNTksMTIgQEAgdm9pZCBpbnRlbF9mYmNfaW5p dChzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZQ0KPiAqZGV2X3ByaXYpDQo+IMKgCWZiYy0+YWN0aXZl ID0gZmFsc2U7DQo+IMKgCWZiYy0+d29yay5zY2hlZHVsZWQgPSBmYWxzZTsNCj4gwqANCj4gKwlp ZiAobmVlZF92dGRfd2EoZGV2X3ByaXYpKSB7DQo+ICsJCXN0cnVjdCBpbnRlbF9kZXZpY2VfaW5m byAqaW5mbyA9DQo+ICsJCQkoc3RydWN0IGludGVsX2RldmljZV9pbmZvICopJmRldl9wcml2LT5p bmZvOw0KPiArCQlpbmZvLT5oYXNfZmJjID0gZmFsc2U7DQo+ICsJfQ0KDQpJIGp1c3QgZmluZCB0 aGlzIHBpZWNlIGFib3ZlIGEgbGl0dGxlIG5vdC1zby1iZWF1dGlmdWwgYW5kIHBvc3NpYmx5DQpj b25mdXNpbmcgZm9yIHBlb3BsZSBkZWJ1Z2dpbmcgZmFpbHVyZXMgYW5kL29yIElHVC4gQWx0ZXJu YXRpdmVzOg0KDQoxIC0gTW92ZSB0aGUgY2hlY2sgdG8gaW50ZWxfZmJjX2Nhbl9jaG9vc2UoKSwg c28gd2UgY2FuIGdpdmUgYSBuaWNlDQpub19mYmNfcmVhc29uLiBQcm9ibGVtOiB0aGlzIHdvdWxk IG5vdCBiZSBhcyBlZmZpY2llbnQgYXMgd2hhdCB5b3UNCndyb3RlLg0KDQoyIC0gTW92ZSB0aGUg Y2hlY2sgdG8gaW50ZWxfc2FuaXRpemVfZmJjX29wdGlvbigpLCB3aGljaCBpcyByZXZpZXdlZA0K YnV0IG5vdCBtZXJnZWQgeWV0LiBQcm9ibGVtOiBzYW1lIGFzIDEuDQoNCjMgLSBQYXRjaCBmYmNf c3VwcG9ydGVkKCkgYW5kIG1ha2UgdGhlIGxpbmUgYmVsb3cgY2FsbCBmYmNfc3VwcG9ydGVkKCkN Cmluc3RlYWQgb2YgSEFTX0ZCQygpLiBQcm9ibGVtOiB3ZSBjYWxsIGl0IG1hbnkgdGltZXMuDQoN CjQgLSBDcmVhdGUgZGV2X3ByaXYtPmZiYy5pc19zdXBwb3J0ZWQgKG9yIHNvbWUgb3RoZXIgbWVh bmluZ2Z1bCBuYW1lKSwNCnNldCBpdCBhdCBpbml0IHRpbWUsIGFuZCBtYWtlIGZiY19zdXBwb3J0 ZWQoKSB1c2UgaXQgKG9yIGp1c3QgcmVwbGFjZQ0KZmJjX3N1cHBvcnRlZCgpIGNhbGxzIHdpdGgg dGhlIHZhcmlhYmxlIGNoZWNrKS4NCg0KQWxsIHNvbHV0aW9ucyBhYm92ZSB3b3VsZCBwcm9iYWJs eSByZXF1aXJlIHNvbWUgYWRqdXN0bWVudHMgdG8gZGVidWdmcw0KYW5kL29yIElHVCAod2hpY2gg cmVsaWVzIG9uIGRlYnVnZnMpLCBidXQgYXQgbGVhc3QgdGhleSB3b3VsZG4ndA0Kc3VycHJpc2Ug dXNlcnMgb3IgSUdUIHJ1bm5lcnMgd2l0aCAid2h5IGRvZXMgaXQgc2F5IFNLTCBpcyBub3QNCnN1 cHBvcnRlZCBieSBGQkM/Ii4NCg0KPiArDQo+IMKgCWlmICghSEFTX0ZCQyhkZXZfcHJpdikpIHsN Cj4gwqAJCWZiYy0+bm9fZmJjX3JlYXNvbiA9ICJ1bnN1cHBvcnRlZCBieSB0aGlzIGNoaXBzZXQi Ow0KPiDCoAkJcmV0dXJuOwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRl bC1nZngK