From mboxrd@z Thu Jan 1 00:00:00 1970 From: Imre Deak Subject: Re: [PATCH 2/2] drm/i915/bxt: work around HW context corruption due to coherency problem Date: Thu, 17 Sep 2015 19:16:34 +0300 Message-ID: <1442506594.4469.14.camel@intel.com> References: <1442341820-23531-1-git-send-email-imre.deak@intel.com> <1442341820-23531-2-git-send-email-imre.deak@intel.com> Reply-To: imre.deak@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 27AAA6E037 for ; Thu, 17 Sep 2015 09:16:39 -0700 (PDT) In-Reply-To: <1442341820-23531-2-git-send-email-imre.deak@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 List-Id: intel-gfx@lists.freedesktop.org T24gdGksIDIwMTUtMDktMTUgYXQgMjE6MzAgKzAzMDAsIEltcmUgRGVhayB3cm90ZToKPiBUaGUg ZXhlY2xpc3QgY29udGV4dCBvYmplY3QgaXMgbWFwcGVkIHdpdGggYSBDUFUvR1BVIGNvaGVyZW50 IG1hcHBpbmcKPiBldmVyeXdoZXJlLCBidXQgb24gQlhUIEEgc3RlcHBpbmcgZHVlIHRvIGEgSFcg aXNzdWUgdGhlIGNvaGVyZW5jeSBpcyBub3QKPiBndWFyYW50ZWVkLiBUbyB3b3JrIGFyb3VuZCB0 aGlzIGZsdXNoIHRoZSBDUFUgY2FjaGUgYWZ0ZXIgYW55IGNoYW5nZQo+IGZyb20gdGhlIENQVSB0 byB0aGUgY29udGV4dCBvYmplY3QuIE5vdGUgdGhhdCB0aGlzIGFsc28gaW5jbHVkZXMgYW55Cj4g Y2hhbmdlcyBkb25lIGJ5IHRoZSBWTSBjb3JlIGFzIG9wcG9zZWQgdG8gdGhlIGRyaXZlciwgd2hl bgo+IHJlYWRpbmcgZnJvbSBiYWNraW5nIHN0b3JlL2J6ZXJvaW5nIHRoZSBwYWdlcy4KPiAKPiBJ IG5vdGljZWQgdGhpcyBwcm9ibGVtIHZpYSBhIEdQVSBoYW5nLCB3aGVyZSBJUEVIUiBwb2ludGVk IHRvIGFuIGludmFsaWQKPiBvcGNvZGUgdmFsdWUuIEkgY291bGRuJ3QgZmluZCB0aGlzIHZhbHVl IG9uIHRoZSByaW5nIGJ1dCBsb29raW5nIGF0IHRoZQo+IGNvbnRlbnRzIG9mIHRoZSBhY3RpdmUg Y29udGV4dCBvYmplY3QgaXQgdHVybmVkIG91dCB0byBiZSBhIHBhcmFtZXRlcgo+IGR3b3JkIG9m IGEgYmlnZ2VyIGNvbW1hbmQgdGhlcmUuIFRoZSBvcmlnaW5hbCBjb21tYW5kIG9wY29kZSBpdHNl bGYKPiB3YXMgemVyb2VkIG91dCwgYmFzZWQgb24gdGhlIGFib3ZlIEkgYXNzdW1lIGR1ZSB0byBh IENQVSB3cml0ZWJhY2sgb2YKPiB0aGUgY29ycmVzcG9uZGluZyBjYWNoZWxpbmUuIFdoZW4gcmVz dG9yaW5nIHRoZSBjb250ZXh0IHRoZSBHUFUgd291bGQKPiBqdW1wIG92ZXIgdGhlIHplcm9lZCBv dXQgb3Bjb2RlIGFuZCBoYW5nIHdoZW4gdHJ5aW5nIHRvIGV4ZWN1dGUgdGhlCj4gYWJvdmUgcGFy YW1ldGVyIGR3b3JkLgo+IAo+IEkgY291bGQgZWFzaWx5IHJlcHJvZHVjZSB0aGlzIGJ5IHJ1bm5p bmcgaWd0L2dlbV9yZW5kZXJfY29weV9yZWR1eCBhbmQKPiBnZW1fdGlsZWRfYmxpdHMvYmFzaWMg aW4gcGFyYWxsZWwsIGJ1dCBJIGd1ZXNzIGl0IGNvdWxkIGJlIHRyaWdnZXJlZCBieQo+IGFueXRo aW5nIGludm9sdmluZyBmcmVxdWVudCBzd2l0Y2hlcyBiZXR3ZWVuIHR3byBzZXBhcmF0ZSBjb250 ZXh0cy4gV2l0aAo+IHRoaXMgd29ya2Fyb3VuZCBJIGNvdWxkbid0IHJlcHJvZHVjZSB0aGUgcHJv YmxlbS4KPiAKPiBOb3RlIHRoYXQgSSBhbHNvIGNvbnNpZGVyZWQgdXNpbmcgc2V0X3BhZ2VzX2Fy cmF5X3VjL3djIG9uIHRoZSBjb250ZXh0Cj4gb2JqZWN0IGJ1dCB0aGlzIHdvdWxkbid0IHdvcmsg d2l0aCBrbWFwX2F0b21pYyB3aGljaCBhbHdheXMgcmV0dXJucyBhIFdCCj4gbWFwcGluZywgYXQg bGVhc3Qgb24gSElHSE1FTS4gVGhlIGFsdGVybmF0aXZlIHdvdWxkIGJlIGtlZXBpbmcgYSBVQy9X Qwo+IGtlcm5lbCBtYXBwaW5nIGFyb3VuZCB3aGVuZXZlciB0aGUgY29udGV4dCBvYmplY3QgaXMg cGlubmVkLCBidXQgdGhpcwo+IHdvdWxkIGJlIGEgYmlnZ2VyIGNoYW5nZS4gU2luY2UgSSdtIG5v dCBzdXJlIGlmIHRoZXJlIHdvdWxkIGJlIGFueQo+IGJlbmVmaXQgaW4gdXNpbmcgc2V0X3BhZ2Vz X2FycmF5LCBJIGNob3NlIHRoZSBzaW1wbGVyIGNsZmx1c2ggbWV0aG9kLgoKVmlsbGUgbm90aWNl ZCBhIHJhY2UgY29uZGl0aW9uIHdpdGggdGhlIGFib3ZlIGFwcHJvYWNoIHdoZW4gdXBkYXRpbmcg dGhlCmNvbnRleHQgZHVyaW5nIGNvbnRleHQgc3dpdGNoOiBpdCdzIHBvc3NpYmxlIHRoYXQgdGhl IEdQVSB3cml0ZXMgdGhlCnVwZGF0ZWQgcmluZyBoZWFkIHZhbHVlIGF0IHRoZSBzYW1lIHRpbWUg dGhlIGRyaXZlciB1cGRhdGVzIHRoZSB0YWlsCnZhbHVlLiBJbiB0aGlzIGNhc2UgdGhlIGRyaXZl ciBjb3VsZCBjb3JydXB0IHRoZSB1cGRhdGVkIGhlYWQgdmFsdWUgd2hlbgpkb2luZyB0aGUgY2xm bHVzaCwgc2luY2UgaGVhZCBhbmQgdGFpbCBhcmUgaW4gdGhlIHNhbWUgY2FjaGVsaW5lLiBTbwpp bnN0ZWFkIHdlIGNhbiBtYXAgdGhlIGNvcnJlc3BvbmRpbmcgcGFnZSB1bmNhY2hlZCBhdm9pZGlu ZyB0aGlzCnNjZW5hcmlvLiBJJ2xsIGZvbGxvdyB1cCB3aXRoIGEgdjIgcGF0Y2hzZXQgZG9pbmcg dGhpcy4KCj4gU2lnbmVkLW9mZi1ieTogSW1yZSBEZWFrIDxpbXJlLmRlYWtAaW50ZWwuY29tPgo+ IC0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oICB8ICAyICsrCj4gIGRyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgIHwgIDIgKy0KPiAgZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfbHJjLmMgfCAxOCArKysrKysrKysrKysrKysrKysKPiAgMyBmaWxlcyBjaGFuZ2Vk LCAyMSBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Ry di5oCj4gaW5kZXggNGVhM2U3Yi4uY2E0NTI2OSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9k cm0vaTkxNS9pOTE1X2Rydi5oCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYu aAo+IEBAIC0zMTAzLDYgKzMxMDMsOCBAQCBpOTE1X2dlbV9vYmplY3RfZ2d0dF91bnBpbihzdHJ1 Y3QgZHJtX2k5MTVfZ2VtX29iamVjdCAqb2JqKQo+ICAJaTkxNV9nZW1fb2JqZWN0X2dndHRfdW5w aW5fdmlldyhvYmosICZpOTE1X2dndHRfdmlld19ub3JtYWwpOwo+ICB9Cj4gIAo+ICtib29sIGNw dV93cml0ZV9uZWVkc19jbGZsdXNoKHN0cnVjdCBkcm1faTkxNV9nZW1fb2JqZWN0ICpvYmopOwo+ ICsKPiAgLyogaTkxNV9nZW1fZmVuY2UuYyAqLwo+ICBpbnQgX19tdXN0X2NoZWNrIGk5MTVfZ2Vt X29iamVjdF9nZXRfZmVuY2Uoc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKm9iaik7Cj4gIGlu dCBfX211c3RfY2hlY2sgaTkxNV9nZW1fb2JqZWN0X3B1dF9mZW5jZShzdHJ1Y3QgZHJtX2k5MTVf Z2VtX29iamVjdCAqb2JqKTsKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9nZW0uYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKPiBpbmRleCBjYjBkZjdl Li40NTQzMTI0IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMK PiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCj4gQEAgLTUzLDcgKzUzLDcg QEAgc3RhdGljIGJvb2wgY3B1X2NhY2hlX2lzX2NvaGVyZW50KHN0cnVjdCBkcm1fZGV2aWNlICpk ZXYsCj4gIAlyZXR1cm4gSEFTX0xMQyhkZXYpIHx8IGxldmVsICE9IEk5MTVfQ0FDSEVfTk9ORTsK PiAgfQo+ICAKPiAtc3RhdGljIGJvb2wgY3B1X3dyaXRlX25lZWRzX2NsZmx1c2goc3RydWN0IGRy bV9pOTE1X2dlbV9vYmplY3QgKm9iaikKPiArYm9vbCBjcHVfd3JpdGVfbmVlZHNfY2xmbHVzaChz dHJ1Y3QgZHJtX2k5MTVfZ2VtX29iamVjdCAqb2JqKQo+ICB7Cj4gIAlpZiAoIWNwdV9jYWNoZV9p c19jb2hlcmVudChvYmotPmJhc2UuZGV2LCBvYmotPmNhY2hlX2xldmVsKSkKPiAgCQlyZXR1cm4g dHJ1ZTsKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYwo+IGluZGV4IDNmMThlYTEuLmRlODY2YmUg MTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMKPiArKysgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYwo+IEBAIC0zNjIsNiArMzYyLDggQEAgc3Rh dGljIGludCBleGVjbGlzdHNfdXBkYXRlX2NvbnRleHQoc3RydWN0IGRybV9pOTE1X2dlbV9yZXF1 ZXN0ICpycSkKPiAgCXN0cnVjdCBkcm1faTkxNV9nZW1fb2JqZWN0ICpyYl9vYmogPSBycS0+cmlu Z2J1Zi0+b2JqOwo+ICAJc3RydWN0IHBhZ2UgKnBhZ2U7Cj4gIAl1aW50MzJfdCAqcmVnX3N0YXRl Owo+ICsJdm9pZCAqY2xmbHVzaF9zdGFydDsKPiArCXZvaWQgKmNsZmx1c2hfZW5kOwo+ICAKPiAg CUJVR19PTighY3R4X29iaik7Cj4gIAlXQVJOX09OKCFpOTE1X2dlbV9vYmpfaXNfcGlubmVkKGN0 eF9vYmopKTsKPiBAQCAtMzczLDYgKzM3NSw5IEBAIHN0YXRpYyBpbnQgZXhlY2xpc3RzX3VwZGF0 ZV9jb250ZXh0KHN0cnVjdCBkcm1faTkxNV9nZW1fcmVxdWVzdCAqcnEpCj4gIAlyZWdfc3RhdGVb Q1RYX1JJTkdfVEFJTCsxXSA9IHJxLT50YWlsOwo+ICAJcmVnX3N0YXRlW0NUWF9SSU5HX0JVRkZF Ul9TVEFSVCsxXSA9IGk5MTVfZ2VtX29ial9nZ3R0X29mZnNldChyYl9vYmopOwo+ICAKPiArCWNs Zmx1c2hfc3RhcnQgPSAmcmVnX3N0YXRlW0NUWF9SSU5HX1RBSUwgKyAxXTsKPiArCWNsZmx1c2hf ZW5kID0gJnJlZ19zdGF0ZVtDVFhfUklOR19CVUZGRVJfU1RBUlQgKyAyXTsKPiArCj4gIAlpZiAo cHBndHQgJiYgIVVTRVNfRlVMTF80OEJJVF9QUEdUVChwcGd0dC0+YmFzZS5kZXYpKSB7Cj4gIAkJ LyogVHJ1ZSAzMmIgUFBHVFQgd2l0aCBkeW5hbWljIHBhZ2UgYWxsb2NhdGlvbjogdXBkYXRlIFBE UAo+ICAJCSAqIHJlZ2lzdGVycyBhbmQgcG9pbnQgdGhlIHVuYWxsb2NhdGVkIFBEUHMgdG8gc2Ny YXRjaCBwYWdlLgo+IEBAIC0zODMsOCArMzg4LDE0IEBAIHN0YXRpYyBpbnQgZXhlY2xpc3RzX3Vw ZGF0ZV9jb250ZXh0KHN0cnVjdCBkcm1faTkxNV9nZW1fcmVxdWVzdCAqcnEpCj4gIAkJQVNTSUdO X0NUWF9QRFAocHBndHQsIHJlZ19zdGF0ZSwgMik7Cj4gIAkJQVNTSUdOX0NUWF9QRFAocHBndHQs IHJlZ19zdGF0ZSwgMSk7Cj4gIAkJQVNTSUdOX0NUWF9QRFAocHBndHQsIHJlZ19zdGF0ZSwgMCk7 Cj4gKwo+ICsJCWNsZmx1c2hfZW5kID0gJnJlZ19zdGF0ZVtDVFhfUERQMF9MRFcgKyAyXTsKPiAg CX0KPiAgCj4gKwlpZiAoY3B1X3dyaXRlX25lZWRzX2NsZmx1c2goY3R4X29iaikpCj4gKwkJZHJt X2NsZmx1c2hfdmlydF9yYW5nZShjbGZsdXNoX3N0YXJ0LAo+ICsJCQkJICAgICAgIGNsZmx1c2hf ZW5kIC0gY2xmbHVzaF9zdGFydCk7Cj4gKwo+ICAJa3VubWFwX2F0b21pYyhyZWdfc3RhdGUpOwo+ ICAKPiAgCXJldHVybiAwOwo+IEBAIC0xMDM2LDYgKzEwNDcsMTMgQEAgc3RhdGljIGludCBpbnRl bF9scl9jb250ZXh0X2RvX3BpbihzdHJ1Y3QgaW50ZWxfZW5naW5lX2NzICpyaW5nLAo+ICAJaWYg KHJldCkKPiAgCQlyZXR1cm4gcmV0Owo+ICAKPiArCS8qCj4gKwkgKiBGb3IgYSBub24tY29oZXJl bnQgbWFwcGluZyB3ZSBuZWVkIHRvIGZsdXNoIGFueSByZWxhdGVkIENQVSBjYWNoZQo+ICsJICog bGluZXMsIG90aGVyd2lzZSB0aGUgd3JpdGViYWNrIG9mIHRoZXNlIHdvdWxkIGNvcnJ1cHQgdGhl IGRhdGEKPiArCSAqIHdyaXR0ZW4gYnkgdGhlIEdQVS4KPiArCSAqLwo+ICsJaTkxNV9nZW1fY2xm bHVzaF9vYmplY3QoY3R4X29iaiwgZmFsc2UpOwo+ICsKPiAgCXJldCA9IGludGVsX3Bpbl9hbmRf bWFwX3JpbmdidWZmZXJfb2JqKHJpbmctPmRldiwgcmluZ2J1Zik7Cj4gIAlpZiAocmV0KQo+ICAJ CWdvdG8gdW5waW5fY3R4X29iajsKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVl ZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2ludGVsLWdmeAo=