From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: References: <20190409135609.18802-1-chris@chris-wilson.co.uk> From: Tvrtko Ursulin Message-ID: Date: Tue, 9 Apr 2019 16:39:43 +0100 MIME-Version: 1.0 In-Reply-To: <20190409135609.18802-1-chris@chris-wilson.co.uk> Content-Language: en-US Subject: Re: [igt-dev] [Intel-gfx] [PATCH i-g-t] i915/gem_exec_schedule: Trick semaphores into a GPU hang List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: Chris Wilson , intel-gfx@lists.freedesktop.org Cc: igt-dev@lists.freedesktop.org List-ID: Ck9uIDA5LzA0LzIwMTkgMTQ6NTYsIENocmlzIFdpbHNvbiB3cm90ZToKPiBJZiB3ZSBoYXZlIHR3 byB0YXNrcyBydW5uaW5nIG9uIHhjczAgYW5kIHhjczEgaW5kZXBlbmRlbnRseSwgYnV0IHdobwo+ IHF1ZXVlIHN1YnNlcXVlbnQgd29yayBvbnRvIHJjcywgd2UgbWF5IGluc2VydCBzZW1hcGhvcmVz IGJlZm9yZSB0aGUgcmNzCj4gd29yayBhbmQgcGljayB1bndpc2VseSB3aGljaCB0YXNrIHRvIHJ1 biBmaXJzdC4gVG8gbWF4aW1pc2UgdGhyb3VnaHB1dCwKPiB3ZSB3YW50IHRvIHJ1biBvbiByY3Mg d2hpY2hldmVyIHRhc2sgaXMgcmVhZHkgZmlyc3QuIENvbnZlcnNlbHksIGlmIHdlCj4gcGljayB3 cm9uZ2x5IHRoYXQgY2FuIGJlIHVzZWQgdG8gdHJpZ2dlciBhIEdQVSBoYW5nIHdpdGggdW5hd2Fy ZQo+IHVzZXJzcGFjZS4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNo cmlzLXdpbHNvbi5jby51az4KPiBDYzogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGlu dGVsLmNvbT4KPiAtLS0KPiAgIHRlc3RzL2k5MTUvZ2VtX2V4ZWNfc2NoZWR1bGUuYyB8IDYxICsr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysKPiAgIDEgZmlsZSBjaGFuZ2VkLCA2MSBp bnNlcnRpb25zKCspCj4gCj4gZGlmZiAtLWdpdCBhL3Rlc3RzL2k5MTUvZ2VtX2V4ZWNfc2NoZWR1 bGUuYyBiL3Rlc3RzL2k5MTUvZ2VtX2V4ZWNfc2NoZWR1bGUuYwo+IGluZGV4IDNkZjMxOWJjYy4u ZDZmMTA5NTQwIDEwMDY0NAo+IC0tLSBhL3Rlc3RzL2k5MTUvZ2VtX2V4ZWNfc2NoZWR1bGUuYwo+ ICsrKyBiL3Rlc3RzL2k5MTUvZ2VtX2V4ZWNfc2NoZWR1bGUuYwo+IEBAIC00MDQsNiArNDA0LDY1 IEBAIHN0YXRpYyB2b2lkIHNlbWFwaG9yZV91c2VybG9jayhpbnQgaTkxNSkKPiAgIAlpZ3Rfc3Bp bl9iYXRjaF9mcmVlKGk5MTUsIHNwaW4pOwo+ICAgfQo+ICAgCj4gK3N0YXRpYyB2b2lkIHNlbWFw aG9yZV9jb2RlcGVuZGVuY3koaW50IGk5MTUpCj4gK3sKPiArCXN0cnVjdCB7Cj4gKwkJaWd0X3Nw aW5fdCAqeGNzLCAqcmNzOwo+ICsJfSB0YXNrWzJdOwo+ICsJdW5zaWduZWQgaW50IGVuZ2luZTsK PiArCWludCBpOwo+ICsKPiArCS8qCj4gKwkgKiBDb25zaWRlciB0d28gdGFza3MsIHRhc2sgQSBy dW5zIG9uICh4Y3MwLCByY3MwKSBhbmQgdGFzayBCCj4gKwkgKiBvbiAoeGNzMSwgcmNzMCkuIFRo YXQgaXMgdGhleSBtdXN0IGJvdGggcnVuIGEgZGVwZW5kZW50Cj4gKwkgKiBiYXRjaCBvbiByY3Mw LCBhZnRlciBmaXJzdCBydW5uaW5nIGluIHBhcmFsbGVsIG9uIHNlcGFyYXRlCj4gKwkgKiBlbmdp bmVzLiBUbyBtYXhpbWlzZSB0aHJvdWdocHV0LCB3ZSB3YW50IHRoZSBzaG9ydGVyIHhjcyB0YXNr Cj4gKwkgKiB0byBzdGFydCBvbiByY3MgZmlyc3QuIEhvd2V2ZXIsIGlmIHdlIGluc2VydCBzZW1h cGhvcmVzIHdlIG1heQo+ICsJICogcGljayB3cm9uZ2x5IGFuZCBlbmQgdXAgcnVubmluZyB0aGUg cmVxdWVzdHMgaW4gdGhlIGxlYXN0Cj4gKwkgKiBvcHRpbWFsIG9yZGVyLgo+ICsJICovCj4gKwo+ ICsJaSA9IDA7Cj4gKwlmb3JfZWFjaF9waHlzaWNhbF9lbmdpbmUoaTkxNSwgZW5naW5lKSB7Cj4g KwkJdWludDMyX3QgY3R4Owo+ICsKPiArCQlpZiAoZW5naW5lID09IEk5MTVfRVhFQ19SRU5ERVIp Cj4gKwkJCWNvbnRpbnVlOwo+ICsKPiArCQljdHggPSBnZW1fY29udGV4dF9jcmVhdGUoaTkxNSk7 Cj4gKwo+ICsJCXRhc2tbaV0ueGNzID0KPiArCQkJX19pZ3Rfc3Bpbl9iYXRjaF9uZXcoaTkxNSwK PiArCQkJCQkgICAgIC5jdHggPSBjdHgsCj4gKwkJCQkJICAgICAuZW5naW5lID0gZW5naW5lLAo+ ICsJCQkJCSAgICAgLmZsYWdzID0gSUdUX1NQSU5fUE9MTF9SVU4pOwo+ICsJCWlndF9zcGluX2J1 c3l3YWl0X3VudGlsX3J1bm5pbmcodGFza1tpXS54Y3MpOwo+ICsKPiArCQkvKiBDb21tb24gcmNz IHRhc2tzIHdpbGwgYmUgcXVldWVkIGluIEZJRk8gKi8KPiArCQl0YXNrW2ldLnJjcyA9Cj4gKwkJ CV9faWd0X3NwaW5fYmF0Y2hfbmV3KGk5MTUsCj4gKwkJCQkJICAgICAuY3R4ID0gY3R4LAo+ICsJ CQkJCSAgICAgLmVuZ2luZSA9IEk5MTVfRVhFQ19SRU5ERVIsCj4gKwkJCQkJICAgICAuZGVwZW5k ZW5jeSA9IHRhc2tbaV0ueGNzLT5oYW5kbGUpOwo+ICsKPiArCQlnZW1fY29udGV4dF9kZXN0cm95 KGk5MTUsIGN0eCk7Cj4gKwo+ICsJCWlmICgrK2kgPT0gQVJSQVlfU0laRSh0YXNrKSkKPiArCQkJ YnJlYWs7Cj4gKwl9Cj4gKwlpZ3RfcmVxdWlyZShpID09IEFSUkFZX1NJWkUodGFzaykpOwo+ICsK PiArCS8qIFNpbmNlIHRhc2tbMF0gd2FzIHF1ZXVlZCBmaXJzdCwgaXQgd2lsbCBiZSBmaXJzdCBp biBxdWV1ZSBmb3IgcmNzICovCj4gKwlpZ3Rfc3Bpbl9iYXRjaF9lbmQodGFza1sxXS54Y3MpOwo+ ICsJaWd0X3NwaW5fYmF0Y2hfZW5kKHRhc2tbMV0ucmNzKTsKPiArCWdlbV9zeW5jKGk5MTUsIHRh c2tbMV0ucmNzLT5oYW5kbGUpOyAvKiB0byBoYW5nIGlmIHRhc2tbMF0gaG9ncyByY3MgKi8KPiAr Cj4gKwlmb3IgKGkgPSAwOyBpIDwgQVJSQVlfU0laRSh0YXNrKTsgaSsrKSB7Cj4gKwkJaWd0X3Nw aW5fYmF0Y2hfZnJlZShpOTE1LCB0YXNrW2ldLnhjcyk7Cj4gKwkJaWd0X3NwaW5fYmF0Y2hfZnJl ZShpOTE1LCB0YXNrW2ldLnJjcyk7Cj4gKwl9Cj4gK30KPiArCj4gICBzdGF0aWMgdm9pZCByZW9y ZGVyKGludCBmZCwgdW5zaWduZWQgcmluZywgdW5zaWduZWQgZmxhZ3MpCj4gICAjZGVmaW5lIEVR VUFMIDEKPiAgIHsKPiBAQCAtMTM5Myw2ICsxNDUyLDggQEAgaWd0X21haW4KPiAgIAo+ICAgCQlp Z3Rfc3VidGVzdCgic2VtYXBob3JlLXVzZXIiKQo+ICAgCQkJc2VtYXBob3JlX3VzZXJsb2NrKGZk KTsKPiArCQlpZ3Rfc3VidGVzdCgic2VtYXBob3JlLWNvZGVwZW5kZW5jeSIpCj4gKwkJCXNlbWFw aG9yZV9jb2RlcGVuZGVuY3koZmQpOwo+ICAgCj4gICAJCWlndF9zdWJ0ZXN0KCJzbW9rZXRlc3Qt YWxsIikKPiAgIAkJCXNtb2tldGVzdChmZCwgQUxMX0VOR0lORVMsIDMwKTsKPiAKCkp1c3QgbmVl ZCBjYW5fc3RvcmVfZHdvcmQgZm9yIGNvZGUgY29ycmVjdG5lc3MgYmVmb3JlIElHVF9TUElOX1BP TExfUlVOIAphbmQgd2l0aCB0aGF0OgoKUmV2aWV3ZWQtYnk6IFR2cnRrbyBVcnN1bGluIDx0dnJ0 a28udXJzdWxpbkBpbnRlbC5jb20+CgpSZWdhcmRzLAoKVHZydGtvCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppZ3QtZGV2IG1haWxpbmcgbGlzdAppZ3Qt ZGV2QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2lndC1kZXY=