From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: [PATCH 1/2] drm/i915/bxt: work around HW coherency issue when accessing GPU seqno Date: Wed, 10 Jun 2015 15:21:19 +0100 Message-ID: <20150610142119.GA12731@nuc-i3427.alporthouse.com> References: <1433780924-7673-1-git-send-email-imre.deak@intel.com> <1433780924-7673-2-git-send-email-imre.deak@intel.com> <87bngp8f82.fsf@intel.com> <1433945266.25216.68.camel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from fireflyinternet.com (mail.fireflyinternet.com [87.106.93.118]) by gabe.freedesktop.org (Postfix) with ESMTP id B81886E8D1 for ; Wed, 10 Jun 2015 07:21:25 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1433945266.25216.68.camel@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Imre Deak Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gV2VkLCBKdW4gMTAsIDIwMTUgYXQgMDU6MDc6NDZQTSArMDMwMCwgSW1yZSBEZWFrIHdyb3Rl Ogo+IE9uIHRpLCAyMDE1LTA2LTA5IGF0IDExOjIxICswMzAwLCBKYW5pIE5pa3VsYSB3cm90ZToK PiA+IE9uIE1vbiwgMDggSnVuIDIwMTUsIEltcmUgRGVhayA8aW1yZS5kZWFrQGludGVsLmNvbT4g d3JvdGU6Cj4gPiA+IEJ5IHJ1bm5pbmcgaWd0L3N0b3JlX2R3b3JkX2xvb3BfcmVuZGVyIG9uIEJY VCB3ZSBjYW4gaGl0IGEgY29oZXJlbmN5Cj4gPiA+IHByb2JsZW0gd2hlcmUgdGhlIHNlcW5vIHdy aXR0ZW4gYXQgR1BVIGNvbW1hbmQgY29tcGxldGlvbiB0aW1lIGlzIG5vdAo+ID4gPiBzZWVuIGJ5 IHRoZSBDUFUuIFRoaXMgcmVzdWx0cyBpbiBfX2k5MTVfd2FpdF9yZXF1ZXN0IHNlZWluZyB0aGUg c3RhbGUKPiA+ID4gc2Vxbm8gYW5kIG5vdCBjb21wbGV0aW5nIHRoZSByZXF1ZXN0IChub3QgY29u c2lkZXJpbmcgdGhlIGxvc3QKPiA+ID4gaW50ZXJydXB0L0dQVSByZXNldCBtZWNoYW5pc20pLiBJ IGFsc28gdmVyaWZpZWQgdGhhdCB0aGlzIGlzbid0IGEgY2FzZQo+ID4gPiBvZiBhIGxvc3QgaW50 ZXJydXB0LCBvciB0aGF0IHRoZSBjb21tYW5kIGRpZG4ndCBjb21wbGV0ZSBzb21laG93OiB3aGVu Cj4gPiA+IHRoZSBjb2hlcmVuY3kgaXNzdWUgb2NjdXJlZCBJIHJlYWQgdGhlIHNlcW5vIHZpYSBh biB1bmNhY2hlZCBHVFQgbWFwcGluZwo+ID4gPiB0b28uIFdoaWxlIHRoZSBjYWNoZWQgdmVyc2lv biBvZiB0aGUgc2Vxbm8gc3RpbGwgc2hvd2VkIHRoZSBzdGFsZSB2YWx1ZQo+ID4gPiB0aGUgb25l IHJlYWQgdmlhIHRoZSB1bmNhY2hlZCBtYXBwaW5nIHdhcyB0aGUgY29ycmVjdCBvbmUuCj4gPiA+ Cj4gPiA+IFdvcmsgYXJvdW5kIHRoaXMgaXNzdWUgYnkgY2xmbHVzaGluZyB0aGUgY29ycmVzcG9u ZGluZyBDUFUgY2FjaGVsaW5lCj4gPiA+IGZvbGxvd2luZyBhbnkgc3RvcmUgb2YgdGhlIHNlcW5v IGFuZCBwcmVjZWRpbmcgYW55IHJlYWRpbmcgb2YgaXQuIFdoZW4KPiA+ID4gcmVhZGluZyBpdCBk byB0aGlzIG9ubHkgd2hlbiB0aGUgY2FsbGVyIGV4cGVjdHMgYSBjb2hlcmVudCB2aWV3Lgo+ID4g Pgo+ID4gPiBUZXN0Y2FzZTogaWd0L3N0b3JlX2R3b3JkX2xvb3BfcmVuZGVyCj4gPiA+IFNpZ25l ZC1vZmYtYnk6IEltcmUgRGVhayA8aW1yZS5kZWFrQGludGVsLmNvbT4KPiA+ID4gLS0tCj4gPiA+ ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYyAgICAgICAgfCAxNyArKysrKysrKysr KysrKysrKwo+ID4gPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcmluZ2J1ZmZlci5oIHwg IDcgKysrKysrKwo+ID4gPiAgMiBmaWxlcyBjaGFuZ2VkLCAyNCBpbnNlcnRpb25zKCspCj4gPiA+ Cj4gPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYyBiL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4gPiA+IGluZGV4IDlmNTQ4NWQuLjg4YmM1 NTI1IDEwMDY0NAo+ID4gPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYwo+ ID4gPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYwo+ID4gPiBAQCAtMTI4 OCwxMiArMTI4OCwyOSBAQCBzdGF0aWMgaW50IGdlbjhfZW1pdF9mbHVzaF9yZW5kZXIoc3RydWN0 IGludGVsX3JpbmdidWZmZXIgKnJpbmdidWYsCj4gPiA+ICAKPiA+ID4gIHN0YXRpYyB1MzIgZ2Vu OF9nZXRfc2Vxbm8oc3RydWN0IGludGVsX2VuZ2luZV9jcyAqcmluZywgYm9vbCBsYXp5X2NvaGVy ZW5jeSkKPiA+ID4gIHsKPiA+ID4gKwkvKgo+ID4gPiArCSAqIE9uIEJYVC1BMSB0aGVyZSBpcyBh IGNvaGVyZW5jeSBpc3N1ZSB3aGVyZWJ5IHRoZSBNSV9TVE9SRV9EQVRBX0lNTQo+ID4gPiArCSAq IHN0b3JpbmcgdGhlIGNvbXBsZXRlZCByZXF1ZXN0J3Mgc2Vxbm8gb2NjYXNpb25hbGx5IGRvZXNu J3QKPiA+ID4gKwkgKiBpbnZhbGlkYXRlIHRoZSBDUFUgY2FjaGUuIFdvcmsgYXJvdW5kIHRoaXMg YnkgY2xmbHVzaGluZyB0aGUKPiA+ID4gKwkgKiBjb3JyZXNwb25kaW5nIGNhY2hlbGluZSB3aGVu ZXZlciB0aGUgY2FsbGVyIHdhbnRzIHRoZSBjb2hlcmVuY3kgdG8KPiA+ID4gKwkgKiBiZSBndWFy YW50ZWVkLiBOb3RlIHRoYXQgdGhpcyBjYWNoZWxpbmUgaXMga25vd24gdG8gYmUKPiA+ID4gKwkg KiBjbGVhbiBhdCB0aGlzIHBvaW50LCBzaW5jZSB3ZSBvbmx5IHdyaXRlIGl0IGluIGdlbjhfc2V0 X3NlcW5vKCksCj4gPiA+ICsJICogd2hlcmUgd2UgYWxzbyBkbyBhIGNsZmx1c2ggYWZ0ZXIgdGhl IHdyaXRlLiBTbyB0aGlzIGNsZmx1c2ggaW4KPiA+ID4gKwkgKiBwcmFjdGljZSBiZWNvbWVzIGFu IGludmFsaWRhdGUgb3BlcmF0aW9uLgoKRGlkIHlvdSBjb21wYXJlIGFuZCBjb250cmFzdCB3aXRo IHRoZSBnZW42KyB3L2E/IEEgY2xmbHVzaCBtYXkganVzdCB3b3JrCm91dCBxdWlja2VyIGNvbnNp ZGVyaW5nIHRoYXQgdGhlIHBvc3RpbmcgcmVhZCB3b3VsZCBpbnZvbHZlIGEgc3BpbmxvY2sKYW5k IGZ3IGRhbmNlLgotQ2hyaXMKCi0tIApDaHJpcyBXaWxzb24sIEludGVsIE9wZW4gU291cmNlIFRl Y2hub2xvZ3kgQ2VudHJlCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9w Lm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwt Z2Z4Cg==