From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Harrison Subject: Re: [PATCH 08/34] drm/i915: Make all GPU resets atomic Date: Tue, 22 Jan 2019 14:19:04 -0800 Message-ID: <2943ee42-b094-8977-a4fa-fac111d5604d@Intel.com> References: <20190121222117.23305-1-chris@chris-wilson.co.uk> <20190121222117.23305-9-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8E2406EDD5 for ; Tue, 22 Jan 2019 22:19:05 +0000 (UTC) In-Reply-To: <20190121222117.23305-9-chris@chris-wilson.co.uk> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gMS8yMS8yMDE5IDE0OjIwLCBDaHJpcyBXaWxzb24gd3JvdGU6Cj4gSW4gcHJlcGFyYXRpb24g Zm9yIHRoZSBuZXh0IGZldyBjb21taXRzLCBtYWtlIHJlc2V0dGluZyB0aGUgR1BVIGF0b21pYy4K PiBDdXJyZW50bHksIHdlIGhhdmUgcHJlcGFyZWQgZ2VuNisgZm9yIGF0b21pYyByZXNldHRpbmcg b2YgaW5kaXZpZHVhbAo+IGVuZ2luZXMsIGJ1dCBub3cgdGhlcmUgaXMgYSByZXF1aXJlbWVudCB0 byBwZXJmb3JtIHRoZSB3aG9sZSBkZXZpY2UKPiBsZXZlbCByZXNldCAoanVzdCB0aGUgcmVnaXN0 ZXIgcG9raW5nKSBmcm9tIGluc2lkZSBhbiBhdG9taWMgY29udGV4dC4KPgo+IFNpZ25lZC1vZmYt Ynk6IENocmlzIFdpbHNvbiA8Y2hyaXNAY2hyaXMtd2lsc29uLmNvLnVrPgo+IFJldmlld2VkLWJ5 OiBNaWthIEt1b3BwYWxhIDxtaWthLmt1b3BwYWxhQGxpbnV4LmludGVsLmNvbT4KPiAtLS0KPiAg IGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfcmVzZXQuYyB8IDUwICsrKysrKysrKysrKysrKysr LS0tLS0tLS0tLS0tLS0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAyNyBpbnNlcnRpb25zKCspLCAyMyBk ZWxldGlvbnMoLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3Jl c2V0LmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3Jlc2V0LmMKPiBpbmRleCAzNDJkOWVl NDI2MDEuLmI5ZDBlYTcwMzYxYyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p OTE1X3Jlc2V0LmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3Jlc2V0LmMKPiBA QCAtMTQ0LDE0ICsxNDQsMTQgQEAgc3RhdGljIGludCBpOTE1X2RvX3Jlc2V0KHN0cnVjdCBkcm1f aTkxNV9wcml2YXRlICppOTE1LAo+ICAgCj4gICAJLyogQXNzZXJ0IHJlc2V0IGZvciBhdCBsZWFz dCAyMCB1c2VjLCBhbmQgd2FpdCBmb3IgYWNrbm93bGVkZ2VtZW50LiAqLwo+ICAgCXBjaV93cml0 ZV9jb25maWdfYnl0ZShwZGV2LCBJOTE1X0dEUlNULCBHUkRPTV9SRVNFVF9FTkFCTEUpOwo+IC0J dXNsZWVwX3JhbmdlKDUwLCAyMDApOwo+IC0JZXJyID0gd2FpdF9mb3IoaTkxNV9pbl9yZXNldChw ZGV2KSwgNTAwKTsKPiArCXVkZWxheSg1MCk7Cj4gKwllcnIgPSB3YWl0X2Zvcl9hdG9taWMoaTkx NV9pbl9yZXNldChwZGV2KSwgNTApOwpJcyBpdCBrbm93biB0byBiZSBzYWZlIHRvIHJlZHVjZSBh bGwgb2YgdGhlc2UgdGltZSBvdXQgdmFsdWVzPyBXaGVyZSBkaWQgCnRoZSBvcmlnaW5hbGx5IDUw MG1zIHZhbHVlIGNvbWUgZnJvbT8gSXMgdGhlcmUgYW55IGNoYW5jZSBvZiBnZXR0aW5nIApzcG9y YWRpYyBmYWlsdXJlcyBiZWNhdXNlIDUwbXMgaXMgYm9yZGVybGluZSBpbiB0aGUgd29yc3QgY2Fz ZSBzY2VuYXJpbz8gCkl0IHN0aWxsIHNvdW5kcyBodWdlIGJ1dCBhbiBvcmRlciBvZiBtYWduaXR1 ZGUgY2hhbmdlIGluIGEgdGltZW91dCAKYWx3YXlzIHNlZW1zIHdvcnJ5aW5nIQoKPiAgIAo+ICAg CS8qIENsZWFyIHRoZSByZXNldCByZXF1ZXN0LiAqLwo+ICAgCXBjaV93cml0ZV9jb25maWdfYnl0 ZShwZGV2LCBJOTE1X0dEUlNULCAwKTsKPiAtCXVzbGVlcF9yYW5nZSg1MCwgMjAwKTsKPiArCXVk ZWxheSg1MCk7Cj4gICAJaWYgKCFlcnIpCj4gLQkJZXJyID0gd2FpdF9mb3IoIWk5MTVfaW5fcmVz ZXQocGRldiksIDUwMCk7Cj4gKwkJZXJyID0gd2FpdF9mb3JfYXRvbWljKCFpOTE1X2luX3Jlc2V0 KHBkZXYpLCA1MCk7Cj4gICAKPiAgIAlyZXR1cm4gZXJyOwo+ICAgfQo+IEBAIC0xNzEsNyArMTcx LDcgQEAgc3RhdGljIGludCBnMzNfZG9fcmVzZXQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmk5 MTUsCj4gICAJc3RydWN0IHBjaV9kZXYgKnBkZXYgPSBpOTE1LT5kcm0ucGRldjsKPiAgIAo+ICAg CXBjaV93cml0ZV9jb25maWdfYnl0ZShwZGV2LCBJOTE1X0dEUlNULCBHUkRPTV9SRVNFVF9FTkFC TEUpOwo+IC0JcmV0dXJuIHdhaXRfZm9yKGc0eF9yZXNldF9jb21wbGV0ZShwZGV2KSwgNTAwKTsK PiArCXJldHVybiB3YWl0X2Zvcl9hdG9taWMoZzR4X3Jlc2V0X2NvbXBsZXRlKHBkZXYpLCA1MCk7 Cj4gICB9Cj4gICAKPiAgIHN0YXRpYyBpbnQgZzR4X2RvX3Jlc2V0KHN0cnVjdCBkcm1faTkxNV9w cml2YXRlICpkZXZfcHJpdiwKPiBAQCAtMTgyLDEzICsxODIsMTMgQEAgc3RhdGljIGludCBnNHhf ZG9fcmVzZXQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LAo+ICAgCWludCByZXQ7 Cj4gICAKPiAgIAkvKiBXYVZjcENsa0dhdGVEaXNhYmxlRm9yTWVkaWFSZXNldDpjdGcsZWxrICov Cj4gLQlJOTE1X1dSSVRFKFZERUNDTEtfR0FURV9ELAo+IC0JCSAgIEk5MTVfUkVBRChWREVDQ0xL X0dBVEVfRCkgfCBWQ1BfVU5JVF9DTE9DS19HQVRFX0RJU0FCTEUpOwo+IC0JUE9TVElOR19SRUFE KFZERUNDTEtfR0FURV9EKTsKPiArCUk5MTVfV1JJVEVfRlcoVkRFQ0NMS19HQVRFX0QsCj4gKwkJ ICAgICAgSTkxNV9SRUFEKFZERUNDTEtfR0FURV9EKSB8IFZDUF9VTklUX0NMT0NLX0dBVEVfRElT QUJMRSk7Cj4gKwlQT1NUSU5HX1JFQURfRlcoVkRFQ0NMS19HQVRFX0QpOwo+ICAgCj4gICAJcGNp X3dyaXRlX2NvbmZpZ19ieXRlKHBkZXYsIEk5MTVfR0RSU1QsCj4gICAJCQkgICAgICBHUkRPTV9N RURJQSB8IEdSRE9NX1JFU0VUX0VOQUJMRSk7Cj4gLQlyZXQgPSAgd2FpdF9mb3IoZzR4X3Jlc2V0 X2NvbXBsZXRlKHBkZXYpLCA1MDApOwo+ICsJcmV0ID0gIHdhaXRfZm9yX2F0b21pYyhnNHhfcmVz ZXRfY29tcGxldGUocGRldiksIDUwKTsKPiAgIAlpZiAocmV0KSB7Cj4gICAJCURSTV9ERUJVR19E UklWRVIoIldhaXQgZm9yIG1lZGlhIHJlc2V0IGZhaWxlZFxuIik7Cj4gICAJCWdvdG8gb3V0Owo+ IEBAIC0xOTYsNyArMTk2LDcgQEAgc3RhdGljIGludCBnNHhfZG9fcmVzZXQoc3RydWN0IGRybV9p OTE1X3ByaXZhdGUgKmRldl9wcml2LAo+ICAgCj4gICAJcGNpX3dyaXRlX2NvbmZpZ19ieXRlKHBk ZXYsIEk5MTVfR0RSU1QsCj4gICAJCQkgICAgICBHUkRPTV9SRU5ERVIgfCBHUkRPTV9SRVNFVF9F TkFCTEUpOwo+IC0JcmV0ID0gIHdhaXRfZm9yKGc0eF9yZXNldF9jb21wbGV0ZShwZGV2KSwgNTAw KTsKPiArCXJldCA9ICB3YWl0X2Zvcl9hdG9taWMoZzR4X3Jlc2V0X2NvbXBsZXRlKHBkZXYpLCA1 MCk7Cj4gICAJaWYgKHJldCkgewo+ICAgCQlEUk1fREVCVUdfRFJJVkVSKCJXYWl0IGZvciByZW5k ZXIgcmVzZXQgZmFpbGVkXG4iKTsKPiAgIAkJZ290byBvdXQ7Cj4gQEAgLTIwNSw5ICsyMDUsOSBA QCBzdGF0aWMgaW50IGc0eF9kb19yZXNldChzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3By aXYsCj4gICBvdXQ6Cj4gICAJcGNpX3dyaXRlX2NvbmZpZ19ieXRlKHBkZXYsIEk5MTVfR0RSU1Qs IDApOwo+ICAgCj4gLQlJOTE1X1dSSVRFKFZERUNDTEtfR0FURV9ELAo+IC0JCSAgIEk5MTVfUkVB RChWREVDQ0xLX0dBVEVfRCkgJiB+VkNQX1VOSVRfQ0xPQ0tfR0FURV9ESVNBQkxFKTsKPiAtCVBP U1RJTkdfUkVBRChWREVDQ0xLX0dBVEVfRCk7Cj4gKwlJOTE1X1dSSVRFX0ZXKFZERUNDTEtfR0FU RV9ELAo+ICsJCSAgICAgIEk5MTVfUkVBRChWREVDQ0xLX0dBVEVfRCkgJiB+VkNQX1VOSVRfQ0xP Q0tfR0FURV9ESVNBQkxFKTsKPiArCVBPU1RJTkdfUkVBRF9GVyhWREVDQ0xLX0dBVEVfRCk7Cj4g ICAKPiAgIAlyZXR1cm4gcmV0Owo+ICAgfQo+IEBAIC0yMTgsMjcgKzIxOCwyOSBAQCBzdGF0aWMg aW50IGlyb25sYWtlX2RvX3Jlc2V0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwK PiAgIHsKPiAgIAlpbnQgcmV0Owo+ICAgCj4gLQlJOTE1X1dSSVRFKElMS19HRFNSLCBJTEtfR1JE T01fUkVOREVSIHwgSUxLX0dSRE9NX1JFU0VUX0VOQUJMRSk7Cj4gLQlyZXQgPSBpbnRlbF93YWl0 X2Zvcl9yZWdpc3RlcihkZXZfcHJpdiwKPiAtCQkJCSAgICAgIElMS19HRFNSLCBJTEtfR1JET01f UkVTRVRfRU5BQkxFLCAwLAo+IC0JCQkJICAgICAgNTAwKTsKPiArCUk5MTVfV1JJVEVfRlcoSUxL X0dEU1IsIElMS19HUkRPTV9SRU5ERVIgfCBJTEtfR1JET01fUkVTRVRfRU5BQkxFKTsKPiArCXJl dCA9IF9faW50ZWxfd2FpdF9mb3JfcmVnaXN0ZXJfZncoZGV2X3ByaXYsIElMS19HRFNSLAo+ICsJ CQkJCSAgIElMS19HUkRPTV9SRVNFVF9FTkFCTEUsIDAsCj4gKwkJCQkJICAgNTAwMCwgMCwKPiAr CQkJCQkgICBOVUxMKTsKVGhlc2UgdHdvIHRpbWVvdXRzIGFyZSBub3cgdHdvIG9yZGVycyBvZiBt YWduaXR1ZGUgc21hbGxlcj8gSXQgd2FzIDUwMG1zIApidXQgaXMgbm93IDUwMDB1cyAoPTVtcyk/ CgpKb2huLgoKCj4gICAJaWYgKHJldCkgewo+ICAgCQlEUk1fREVCVUdfRFJJVkVSKCJXYWl0IGZv ciByZW5kZXIgcmVzZXQgZmFpbGVkXG4iKTsKPiAgIAkJZ290byBvdXQ7Cj4gICAJfQo+ICAgCj4g LQlJOTE1X1dSSVRFKElMS19HRFNSLCBJTEtfR1JET01fTUVESUEgfCBJTEtfR1JET01fUkVTRVRf RU5BQkxFKTsKPiAtCXJldCA9IGludGVsX3dhaXRfZm9yX3JlZ2lzdGVyKGRldl9wcml2LAo+IC0J CQkJICAgICAgSUxLX0dEU1IsIElMS19HUkRPTV9SRVNFVF9FTkFCTEUsIDAsCj4gLQkJCQkgICAg ICA1MDApOwo+ICsJSTkxNV9XUklURV9GVyhJTEtfR0RTUiwgSUxLX0dSRE9NX01FRElBIHwgSUxL X0dSRE9NX1JFU0VUX0VOQUJMRSk7Cj4gKwlyZXQgPSBfX2ludGVsX3dhaXRfZm9yX3JlZ2lzdGVy X2Z3KGRldl9wcml2LCBJTEtfR0RTUiwKPiArCQkJCQkgICBJTEtfR1JET01fUkVTRVRfRU5BQkxF LCAwLAo+ICsJCQkJCSAgIDUwMDAsIDAsCj4gKwkJCQkJICAgTlVMTCk7Cj4gICAJaWYgKHJldCkg ewo+ICAgCQlEUk1fREVCVUdfRFJJVkVSKCJXYWl0IGZvciBtZWRpYSByZXNldCBmYWlsZWRcbiIp Owo+ICAgCQlnb3RvIG91dDsKPiAgIAl9Cj4gICAKPiAgIG91dDoKPiAtCUk5MTVfV1JJVEUoSUxL X0dEU1IsIDApOwo+IC0JUE9TVElOR19SRUFEKElMS19HRFNSKTsKPiArCUk5MTVfV1JJVEVfRlco SUxLX0dEU1IsIDApOwo+ICsJUE9TVElOR19SRUFEX0ZXKElMS19HRFNSKTsKPiAgIAlyZXR1cm4g cmV0Owo+ICAgfQo+ICAgCj4gQEAgLTU3Miw3ICs1NzQsOSBAQCBpbnQgaW50ZWxfZ3B1X3Jlc2V0 KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICppOTE1LCB1bnNpZ25lZCBpbnQgZW5naW5lX21hc2sp Cj4gICAJCXJldCA9IC1FTk9ERVY7Cj4gICAJCWlmIChyZXNldCkgewo+ICAgCQkJR0VNX1RSQUNF KCJlbmdpbmVfbWFzaz0leFxuIiwgZW5naW5lX21hc2spOwo+ICsJCQlwcmVlbXB0X2Rpc2FibGUo KTsKPiAgIAkJCXJldCA9IHJlc2V0KGk5MTUsIGVuZ2luZV9tYXNrLCByZXRyeSk7Cj4gKwkJCXBy ZWVtcHRfZW5hYmxlKCk7Cj4gICAJCX0KPiAgIAkJaWYgKHJldCAhPSAtRVRJTUVET1VUIHx8IGVu Z2luZV9tYXNrICE9IEFMTF9FTkdJTkVTKQo+ICAgCQkJYnJlYWs7CgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0Cklu dGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5v cmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK