From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= Subject: Re: [PATCH v2 1/3] drm: Add support for panic message output Date: Wed, 13 Mar 2019 11:24:30 +0100 Message-ID: References: <20190311174218.51899-1-noralf@tronnes.org> <20190311174218.51899-2-noralf@tronnes.org> <20190311192338.GR2665@phenom.ffwll.local> <20190312221303.GA6260@darwi-home-pc> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190312221303.GA6260@darwi-home-pc> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: "Ahmed S. Darwish" Cc: John Ogness , daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org CgpEZW4gMTIuMDMuMjAxOSAyMy4xMywgc2tyZXYgQWhtZWQgUy4gRGFyd2lzaDoKPiBIaSwKPiAK PiBbWyBDQ2luZyBKb2huIGZvciB0aGUgdHJ5bG9jayBwYXJ0cyBdXQo+IAo+IE9uIE1vbiwgTWFy IDExLCAyMDE5IGF0IDExOjMzOjE1UE0gKzAxMDAsIE5vcmFsZiBUcsO4bm5lcyB3cm90ZToKPj4K Pj4KPj4gRGVuIDExLjAzLjIwMTkgMjAuMjMsIHNrcmV2IERhbmllbCBWZXR0ZXI6Cj4+PiBPbiBN b24sIE1hciAxMSwgMjAxOSBhdCAwNjo0MjoxNlBNICswMTAwLCBOb3JhbGYgVHLDuG5uZXMgd3Jv dGU6Cj4+Pj4gVGhpcyBhZGRzIHN1cHBvcnQgZm9yIG91dHB1dHRpbmcga2VybmVsIG1lc3NhZ2Vz IG9uIHBhbmljKCkuCj4+Pj4gQSBrZXJuZWwgbWVzc2FnZSBkdW1wZXIgaXMgdXNlZCB0byBkdW1w IHRoZSBsb2cuIFRoZSBkdW1wZXIgaXRlcmF0ZXMKPj4+PiBvdmVyIGVhY2ggRFJNIGRldmljZSBh bmQgaXQncyBjcnRjJ3MgdG8gZmluZCBzdWl0YWJsZSBmcmFtZWJ1ZmZlcnMuCj4+Pj4KPj4+PiBB bGwgdGhlIG90aGVyIGR1bXBlcnMgYXJlIHJ1biBiZWZvcmUgdGhpcyBvbmUgZXhjZXB0IG10ZG9v cHMuCj4+Pj4gT25seSBhdG9taWMgZHJpdmVycyBhcmUgc3VwcG9ydGVkLgo+Pj4+Cj4+Pj4gU2ln bmVkLW9mZi1ieTogTm9yYWxmIFRyw7hubmVzIDxub3JhbGZAdHJvbm5lcy5vcmc+Cj4+Pgo+Pj4g QnVuY2ggb2YgY29tbWVudHMvaWRlYXMgZm9yIHlvdSBvciBEYXJ3aXNoIGJlbG93LCB3aG9ldmVy IHBpY2tzIHRoaXMgdXAuCj4+Cj4+IEFjdHVhbGx5IGl0IHdvdWxkIG5lIG5pY2UgaWYgRGFyd2lz aCBjb3VsZCBwaWNrIGl0IHVwIHNpbmNlIGhlIHdpbGwgZG8KPj4gaXQgb24gaTkxNSB3aGljaCB3 aWxsIGJlIHVzZWZ1bCB0byBhIG11Y2ggYnJvYWRlciBhdWRpZW5jZS4KPj4gSWYgbm90IEknbGwg cmVzcGluIHdoZW4gSSdtIGRvbmUgd2l0aCB0aGUgZHJtX2ZiX2hlbHBlciByZWZhY3RvcmluZy4K Pj4KPiAKPiBZdXAsIEknbGwgYmUgbW9yZSB0aGFuIGhhcHB5IHRvIGRvIHRoaXMuLiAKClRoYW5r cyBmb3IgZG9pbmcgdGhhdC4KCk5vcmFsZi4KCj4gd2hpbGUgcHJlc2VydmluZyBhbGwgb2YKPiBO b3JhbGYncyBhdXRob3JzaGlwIGFuZCBjb3B5cmlnaHQgbm90aWNlcyBvZiBjb3Vyc2UuCj4gCj4g SSBndWVzcyBpdCBjYW4gYmU6Cj4gCj4gICAtIEhhbmRsZSB0aGUgY29tbWVudHMgcG9zdGVkIGJ5 IERhbmllbCBhbmQgb3RoZXJzIChJJ2xsIHBvc3QKPiAgICAgc29tZSBxdWVzdGlvbnMgdG9vKQo+ IAo+ICAgLSBBZGQgdGhlIG5lY2Vzc2FyeSBpOTE1IHNwZWNpZmljIGJpdHMKPiAKPiAgIC0gVGVz dCwgcG9zdCB2My92NC8uLi92bi4gUmluc2UgYW5kIHJlcGVhdC4gS2VlcCBpdCBsb2NhbCBhdAo+ ICAgICBkcmktZGV2ZWwgdW50aWwgZ2V0dGluZyB0aGUgbmVjZXNzYXJ5IFMtby1Ccy4KPiAKPiAg IC0gUG9zdCB0byB3aWRlciBhdWRpZW5jZSAoc29tZSBmZWVkYmFjayBmcm9tIGRpc3RyaWJ1dGlv biBmb2xrcwo+ICAgICB3b3VsZCBhbHNvIGJlIG5pY2UsIGJlZm9yZSBwb3N0aW5nIHRvIGxrbWwp Cj4gCj4gTW9yZSBjb21tZW50cyBiZWxvdy4uCj4gCj4gWy4uLl0KPiAKPj4+PiArCj4+Pj4gK3N0 YXRpYyB2b2lkIGRybV9wYW5pY19rbXNnX2R1bXAoc3RydWN0IGttc2dfZHVtcGVyICpkdW1wZXIs Cj4+Pj4gKwkJCQllbnVtIGttc2dfZHVtcF9yZWFzb24gcmVhc29uKQo+Pj4+ICt7Cj4+Pj4gKwlj bGFzc19mb3JfZWFjaF9kZXZpY2UoZHJtX2NsYXNzLCBOVUxMLCBkdW1wZXIsIGRybV9wYW5pY19k ZXZfaXRlcik7Cj4+Pgo+Pj4gY2xhc3NfZm9yX2VhY2hfZGV2aWNlIHVzZXMga2xpc3QsIHdoaWNo IG9ubHkgdXNlcyBhbiBpcnFzYXZlIHNwaW5sb2NrLiBJCj4+PiB0aGluayB0aGF0J3MgZ29vZCBl bm91Z2guIENvbW1lbnQgdG8gdGhhdCBlZmZlY3Qgd291bGQgYmUgZ29vZCBlLmcuCj4+Pgo+Pj4g CS8qIGJhc2VkIG9uIGtsaXN0LCB3aGljaCB1c2VzIG9ubHkgYSBzcGluX2xvY2tfaXJxc2F2ZSwg d2hpY2ggd2UKPj4+IAkgKiBhc3N1bWUgc3RpbGwgd29ya3MgKi8KPj4+Cj4+PiBJZiB3ZSBhaW0g Zm9yIHBlcmZlY3QgdGhpcyBzaG91bGQgYmUgYSB0cnlsb2NrIHN0aWxsLCBtYXliZSB1c2luZyBv dXIgb3duCj4+PiBkZXZpY2UgbGlzdC4KPj4+Cj4gCj4gSSBkZWZpbml0ZWx5IGFncmVlIGhlcmUu Cj4gCj4gVGhlIGxvY2sgbWF5IGFscmVhZHkgYmUgbG9ja2VkIGVpdGhlciBieSBhIHN0b3BwZWQg Q1BVLCBvciBieSB0aGUKPiB2ZXJ5IHNhbWUgQ1BVIHdlIGV4ZWN1dGUgcGFuaWMoKSBvbiAoZS5n LiBOTUkgcGFuaWMoKSBvbiB0aGUKPiBwcmludGluZyBDUFUpLgo+IAo+IFRoaXMgaXMgd2h5IGl0 J3MgdmVyeSBjb21tb24gZm9yIGV4YW1wbGUgaW4gc2VyaWFsIGNvbnNvbGVzLCB3aGljaAo+IGFy ZSB1c3VhbGx5IGNhcmVmdWwgYWJvdXQgcmUtZW50cmFuY2UgYW5kIHBhbmljIGNvbnRleHRzLCB0 byBkbzoKPiAKPiAgIHh4eHh4eF9jb25zb2xlX3dyaXRlKC4uLikgewo+IAlpZiAob29wc19pbl9w cm9ncmVzcykKPiAJCWxvY2tlZCA9IHNwaW5fdHJ5bG9ja19pcnFzYXZlKCZwb3J0LT5sb2NrLCBm bGFncyk7Cj4gCWVsc2UKPiAJCXNwaW5fbG9ja19pcnFzYXZlKCZwb3J0LT5sb2NrLCBmbGFncyk7 Cj4gICB9Cj4gCj4gSSdtIHF1aXRlIHBvc2l0aXZlIHdlIHNob3VsZCBkbyB0aGUgc2FtZSBmb3Ig cGFuaWMgZHJtIGRyaXZlcnMuCj4gSm9obj8KPiAKPj4+PiArfQo+Pj4+ICsKPj4+PiArc3RhdGlj IHN0cnVjdCBrbXNnX2R1bXBlciBkcm1fcGFuaWNfa21zZ19kdW1wZXIgPSB7Cj4+Pj4gKwkuZHVt cCA9IGRybV9wYW5pY19rbXNnX2R1bXAsCj4+Pj4gKwkubWF4X3JlYXNvbiA9IEtNU0dfRFVNUF9Q QU5JQywKPj4+PiArfTsKPj4+PiArCj4+Pj4gK3N0YXRpYyBzc2l6ZV90IGRybV9wYW5pY19maWxl X3BhbmljX3dyaXRlKHN0cnVjdCBmaWxlICpmaWxlLAo+Pj4+ICsJCQkJCSAgY29uc3QgY2hhciBf X3VzZXIgKnVzZXJfYnVmLAo+Pj4+ICsJCQkJCSAgc2l6ZV90IGNvdW50LCBsb2ZmX3QgKnBwb3Mp Cj4+Pj4gK3sKPj4+PiArCXVuc2lnbmVkIGxvbmcgbG9uZyB2YWw7Cj4+Pj4gKwljaGFyIGJ1Zlsy NF07Cj4+Pj4gKwlzaXplX3Qgc2l6ZTsKPj4+PiArCXNzaXplX3QgcmV0Owo+Pj4+ICsKPj4+PiAr CXNpemUgPSBtaW4oc2l6ZW9mKGJ1ZikgLSAxLCBjb3VudCk7Cj4+Pj4gKwlpZiAoY29weV9mcm9t X3VzZXIoYnVmLCB1c2VyX2J1Ziwgc2l6ZSkpCj4+Pj4gKwkJcmV0dXJuIC1FRkFVTFQ7Cj4+Pj4g Kwo+Pj4+ICsJYnVmW3NpemVdID0gJ1wwJzsKPj4+PiArCXJldCA9IGtzdHJ0b3VsbChidWYsIDAs ICZ2YWwpOwo+Pj4+ICsJaWYgKHJldCkKPj4+PiArCQlyZXR1cm4gcmV0Owo+Pj4+ICsKPj4+PiAr CWRybV9wYW5pY19rbXNnX2R1bXBlci5tYXhfcmVhc29uID0gS01TR19EVU1QX09PUFM7Cj4+Pj4g Kwl3bWIoKTsKPj4+PiArCj4+Pj4gKwkvKiBEbyBhIHJlYWwgdGVzdCB3aXRoOiBlY2hvIGMgPiAv cHJvYy9zeXNycS10cmlnZ2VyICovCj4+Pj4gKwo+Pj4+ICsJaWYgKHZhbCA9PSAwKSB7Cj4+Pj4g KwkJcHJfaW5mbygiVGVzdCBwYW5pYyBzY3JlZW4gdXNpbmcga21zZ19kdW1wKE9PUFMpXG4iKTsK Pj4+PiArCQlrbXNnX2R1bXAoS01TR19EVU1QX09PUFMpOwo+Pj4+ICsJfSBlbHNlIGlmICh2YWwg PT0gMSkgewo+Pj4+ICsJCWNoYXIgKm51bGxfcG9pbnRlciA9IE5VTEw7Cj4+Pj4gKwo+Pj4+ICsJ CXByX2luZm8oIlRlc3QgcGFuaWMgc2NyZWVuIHVzaW5nIE5VTEwgcG9pbnRlciBkZXJlZmVyZW5j ZVxuIik7Cj4+Pj4gKwkJKm51bGxfcG9pbnRlciA9IDE7Cj4+Pj4gKwl9IGVsc2Ugewo+Pj4+ICsJ CXJldHVybiAtRUlOVkFMOwo+Pj4+ICsJfQo+Pj4KPj4+IFRoaXMgaXNuJ3QgcXVpdGUgd2hhdCBJ IGhhZCBpbiBtaW5kLCBzaW5jZSBpdCBzdGlsbCBraWxscyB0aGUga2VybmVsIChsaWtlCj4+PiBz eXNycS10cmlnZ2VyKS4KPj4KPj4gSWYgdmFsID09IDAsIGl0IGRvZXNuJ3Qga2lsbCB0aGUga2Vy bmVsLCBpdCBvbmx5IGR1bXBzIHRoZSBrZXJuZWwgbG9nLgo+PiBBbmQgaXQgZG9lc24ndCB0YWlu dCB0aGUga2VybmVsIGVpdGhlci4KPj4KPj4+IEluc3RlYWQgd2hhdCBJIGhhZCBpbiBtaW5kIGlz IHRvIHJlY3JlYXRlIHRoZSB3b3JzdAo+Pj4gcG9zc2libGUgcGFuaWMgY29udGV4dCBhcyBtdWNo IGFzIGZlYXNpYmxlIChkaXNhYmxpbmcgaW50ZXJydXB0cyBzaG91bGQgYmUKPj4+IGEgZ29vZCBz dGFydCwgbWF5YmUgd2UgY2FuIGV2ZW4gZG8gYW4gbm1pIGNhbGxiYWNrKSwgYW5kIHRoZW4gY2Fs bCBvdXIKPj4+IHBhbmljIGltcGxlbWVudGF0aW9uLiBUaGF0IHdheSB3ZSBjYW4gdGVzdCB0aGUg cGFuaWMgaGFuZGxlciBpbiBhCj4+PiBub24tZGVzdHJ1Y3RpdmUgd2F5IChpLmUuIGFzaWRlIGZy b20gbGFzdCBkbWVzZyBsaW5lcyBwcmludGVkIHRvIHRoZQo+Pj4gc2NyZWVuIG5vdGhpbmcgYmFk IGhhcHBlbnMgdG8gdGhlIGtlcm5lbDogTm8gcmVhbCBwYW5pYywgbm8gb29wcywgbm8KPj4+IHRh aW50aW5nKS4KPj4KPj4gVGhlIGludGVycnVwdCBjYXNlIEkgY2FuIGRvLCBubWkgSSBoYXZlIG5v IGlkZWEuCj4+Cj4gCj4gSSBhZ3JlZSB0b28uIERpc2FibGluZyBpbnRlcnJ1cHRzICsgQ09ORklH X0RFQlVHX0FUT01JQ19TTEVFUAo+IHdvdWxkIGJlIGEgbmljZSBub24tZGVzdHJ1Y3RpdmUgdGVz dC1jYXNlIGVtdWxhdGlvbi4KPiAKPiB0aGFua3MhCj4gCj4gLS0KPiBkYXJ3aQo+IGh0dHA6Ly9k YXJ3aXNoLmNoYXNpbmdwb2ludGVycy5jb20KPiAKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4v bGlzdGluZm8vaW50ZWwtZ2Z4