From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maarten Lankhorst Subject: Re: [PATCH v2] drm/i915: Protect DDI port to DPLL map from theoretical race. Date: Mon, 18 Dec 2017 11:40:02 +0100 Message-ID: References: <20171215223545.12305-1-rodrigo.vivi@intel.com> <20171215224310.19103-1-rodrigo.vivi@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8C22889DA2 for ; Mon, 18 Dec 2017 10:40:07 +0000 (UTC) In-Reply-To: <20171215224310.19103-1-rodrigo.vivi@intel.com> 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: Rodrigo Vivi , intel-gfx@lists.freedesktop.org Cc: Paulo Zanoni List-Id: intel-gfx@lists.freedesktop.org T3AgMTUtMTItMTcgb20gMjM6NDMgc2NocmVlZiBSb2RyaWdvIFZpdmk6Cj4gSW4gY2FzZSB3ZSBo YXZlIG11bHRpcGxlIG1vZGVzZXRzIGZvciBkaWZmZXJlbnQgY29ubmVjdG9ycwo+IGhhcHBlbmlu ZyBpbiBwYXJhbGxlbCB3ZSBjb3VsZCBoYXZlIGEgcmFjZSBvbiB0aGUgUk1XIG9uIHRoZXNlCj4g c2hhcmVkIHJlZ2lzdGVycy4KPgo+IFRoaXMgcG9zc2liaWxpdHkgd2FzIGluaXRpYWxseSByYWlz ZWQgYnkgUGF1bG8gd2hlbiByZXZpZXdpbmcKPiBjb21taXQgJzU1NWUzOGQyNzMxNyAoImRybS9p OTE1L2NubDogRERJIC0gUExMIG1hcHBpbmciKScKPiBidXQgdGhlIG9yaWdpbmFsIHBvc3NpYmls aXR5IGNvbWVzIGZyb20gY29tbWl0ICc1NDE2ZDg3MTEzNmQKPiAoImRybS9pOTE1L3NrbDogU2V0 IHRoZSBlRFAgbGluayByYXRlIG9uIERQTEwwIiknLiBPciBtYXliZQo+IGxhdGVyIHdoZW4gYXRv bWljIGNvbW1pdHMgZW50ZXJlZCBpbnRvIHBpY3R1cmUuCj4KPiBBcHBhcmVudGx5IHRoZSBkaXNj dXNzaW9uIGFyb3VuZCB0aGlzIHRvcGljIHNob3dlZCB0aGF0IHRoZQo+IHJpZ2h0IHNvbHV0aW9u IHdvdWxkIGJlIG9uIHNlcmlhbGl6aW5nIHRoZSBhdG9taWMgY29tbWl0cyBpbgo+IGEgd2F5IHRo YXQgd2UgZG9uJ3QgaGF2ZSB0aGUgcG9zc2liaWxpdHkgb2YgcmFjZXMgaGVyZSBzaW5jZQo+IGlm IHRoYXQgcGFyYWxsZWwgbW9kZXNldCBoYXBwZW5pbmdzIGFwcGFyZW50bHkgbWFueSBvdGhlcgo+ IHRoaW5ncyB3aWxsIGJlIG9uIGZpcmUuCj4KPiBDb2RlIGlzIHRoZXJlIHNpbmNlIFNLTCBhbmQg dGhlcmUgd2FzIG5vIHJlcG9ydCBvZiBpc3N1ZSwKPiBidXQgc2luY2Ugd2UgbmV2ZXIgbG9va2Vk IGJhY2sgdG8gdGhhdCBzZXJpYWxpemF0aW9uIHBvc3NpYmlsaXR5LAo+IGFuZCBhbHNvIHdlIGRv bid0IGhhdmUgYW4gaWd0IGNhc2UgZm9yIHRoYXQgaXQgaXMgYmV0dGVyIHRvIGF0Cj4gbGVhc3Qg cHJvdGVjdCB0aGlzIGNvcm5lci4KPgo+IFN1Z2dlc3RlZC1ieTogUGF1bG8gWmFub25pIDxwYXVs by5yLnphbm9uaUBpbnRlbC5jb20+Cj4gRml4ZXM6IDU1NWUzOGQyNzMxNyAoImRybS9pOTE1L2Nu bDogRERJIC0gUExMIG1hcHBpbmciKQo+IEZpeGVzOiA1NDE2ZDg3MTEzNmQgKCJkcm0vaTkxNS9z a2w6IFNldCB0aGUgZURQIGxpbmsgcmF0ZSBvbiBEUExMMCIpCj4gQ2M6IFBhdWxvIFphbm9uaSA8 cGF1bG8uci56YW5vbmlAaW50ZWwuY29tPgo+IENjOiBWaWxsZSBTeXJqw6Rsw6QgPHZpbGxlLnN5 cmphbGFAbGludXguaW50ZWwuY29tPgo+IENjOiBNYWFydGVuIExhbmtob3JzdCBtYWFydGVuLmxh bmtob3JzdEBsaW51eC5pbnRlbC5jb20KPiBTaWduZWQtb2ZmLWJ5OiBSb2RyaWdvIFZpdmkgPHJv ZHJpZ28udml2aUBpbnRlbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVs X2RkaS5jIHwgNCArKysrCj4gIDEgZmlsZSBjaGFuZ2VkLCA0IGluc2VydGlvbnMoKykKPgo+IGRp ZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGkuYyBiL2RyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2RkaS5jCj4gaW5kZXggMzY5Zjc4MDU4OGZiLi5mNjI0YmE4ZTIzYmUg MTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZGRpLmMKPiArKysgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGkuYwo+IEBAIC0yMDk1LDYgKzIwOTUsOCBAQCBz dGF0aWMgdm9pZCBpbnRlbF9kZGlfY2xrX3NlbGVjdChzdHJ1Y3QgaW50ZWxfZW5jb2RlciAqZW5j b2RlciwKPiAgCWlmIChXQVJOX09OKCFwbGwpKQo+ICAJCXJldHVybjsKPiAgCj4gKwkgbXV0ZXhf bG9jaygmZGV2X3ByaXYtPmRwbGxfbG9jayk7Cj4gKwo+ICAJaWYgKElTX0NBTk5PTkxBS0UoZGV2 X3ByaXYpKSB7Cj4gIAkJLyogQ29uZmlndXJlIERQQ0xLQV9DRkdDUjAgdG8gbWFwIHRoZSBEUExM IHRvIHRoZSBEREkuICovCj4gIAkJdmFsID0gSTkxNV9SRUFEKERQQ0xLQV9DRkdDUjApOwo+IEBA IC0yMTI0LDYgKzIxMjYsOCBAQCBzdGF0aWMgdm9pZCBpbnRlbF9kZGlfY2xrX3NlbGVjdChzdHJ1 Y3QgaW50ZWxfZW5jb2RlciAqZW5jb2RlciwKPiAgCX0gZWxzZSBpZiAoSU5URUxfSU5GTyhkZXZf cHJpdiktPmdlbiA8IDkpIHsKPiAgCQlJOTE1X1dSSVRFKFBPUlRfQ0xLX1NFTChwb3J0KSwgaHN3 X3BsbF90b19kZGlfcGxsX3NlbChwbGwpKTsKPiAgCX0KPiArCj4gKwltdXRleF91bmxvY2soJmRl dl9wcml2LT5kcGxsX2xvY2spOwo+ICB9Cj4gIAo+ICBzdGF0aWMgdm9pZCBpbnRlbF9kZGlfY2xr X2Rpc2FibGUoc3RydWN0IGludGVsX2VuY29kZXIgKmVuY29kZXIpCgpXaGF0IGlzIHRoZSBkaWZm ZXJlbmNlIGJldHdlZW4gdjEgYW5kIHRoaXM/IENoYW5nZWxvZyB3b3VsZCBiZSBuaWNlLCBvciBh IGNvbW1lbnQgdGhhdCB5b3UgcmVzZW50IGl0LiA6KQoKUGF0Y2ggbG9va3Mgc2FuZSwgc28gUmV2 aWV3ZWQtYnk6IE1hYXJ0ZW4gTGFua2hvcnN0IDxtYWFydGVuLmxhbmtob3JzdEBsaW51eC5pbnRl bC5jb20+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJ bnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0 cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK