From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: Re: [PATCH v2] drm/i915: Protect DDI port to DPLL map from theoretical race. Date: Mon, 18 Dec 2017 14:36:27 -0800 Message-ID: <20171218223627.p5tb6eo7fst7qfpn@intel.com> 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 mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 42A0B6E227 for ; Mon, 18 Dec 2017 22:36:40 +0000 (UTC) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Maarten Lankhorst Cc: intel-gfx@lists.freedesktop.org, Paulo Zanoni List-Id: intel-gfx@lists.freedesktop.org T24gTW9uLCBEZWMgMTgsIDIwMTcgYXQgMTA6NDA6MDJBTSArMDAwMCwgTWFhcnRlbiBMYW5raG9y c3Qgd3JvdGU6Cj4gT3AgMTUtMTItMTcgb20gMjM6NDMgc2NocmVlZiBSb2RyaWdvIFZpdmk6Cj4g PiBJbiBjYXNlIHdlIGhhdmUgbXVsdGlwbGUgbW9kZXNldHMgZm9yIGRpZmZlcmVudCBjb25uZWN0 b3JzCj4gPiBoYXBwZW5pbmcgaW4gcGFyYWxsZWwgd2UgY291bGQgaGF2ZSBhIHJhY2Ugb24gdGhl IFJNVyBvbiB0aGVzZQo+ID4gc2hhcmVkIHJlZ2lzdGVycy4KPiA+Cj4gPiBUaGlzIHBvc3NpYmls aXR5IHdhcyBpbml0aWFsbHkgcmFpc2VkIGJ5IFBhdWxvIHdoZW4gcmV2aWV3aW5nCj4gPiBjb21t aXQgJzU1NWUzOGQyNzMxNyAoImRybS9pOTE1L2NubDogRERJIC0gUExMIG1hcHBpbmciKScKPiA+ IGJ1dCB0aGUgb3JpZ2luYWwgcG9zc2liaWxpdHkgY29tZXMgZnJvbSBjb21taXQgJzU0MTZkODcx MTM2ZAo+ID4gKCJkcm0vaTkxNS9za2w6IFNldCB0aGUgZURQIGxpbmsgcmF0ZSBvbiBEUExMMCIp Jy4gT3IgbWF5YmUKPiA+IGxhdGVyIHdoZW4gYXRvbWljIGNvbW1pdHMgZW50ZXJlZCBpbnRvIHBp Y3R1cmUuCj4gPgo+ID4gQXBwYXJlbnRseSB0aGUgZGlzY3Vzc2lvbiBhcm91bmQgdGhpcyB0b3Bp YyBzaG93ZWQgdGhhdCB0aGUKPiA+IHJpZ2h0IHNvbHV0aW9uIHdvdWxkIGJlIG9uIHNlcmlhbGl6 aW5nIHRoZSBhdG9taWMgY29tbWl0cyBpbgo+ID4gYSB3YXkgdGhhdCB3ZSBkb24ndCBoYXZlIHRo ZSBwb3NzaWJpbGl0eSBvZiByYWNlcyBoZXJlIHNpbmNlCj4gPiBpZiB0aGF0IHBhcmFsbGVsIG1v ZGVzZXQgaGFwcGVuaW5ncyBhcHBhcmVudGx5IG1hbnkgb3RoZXIKPiA+IHRoaW5ncyB3aWxsIGJl IG9uIGZpcmUuCj4gPgo+ID4gQ29kZSBpcyB0aGVyZSBzaW5jZSBTS0wgYW5kIHRoZXJlIHdhcyBu byByZXBvcnQgb2YgaXNzdWUsCj4gPiBidXQgc2luY2Ugd2UgbmV2ZXIgbG9va2VkIGJhY2sgdG8g dGhhdCBzZXJpYWxpemF0aW9uIHBvc3NpYmlsaXR5LAo+ID4gYW5kIGFsc28gd2UgZG9uJ3QgaGF2 ZSBhbiBpZ3QgY2FzZSBmb3IgdGhhdCBpdCBpcyBiZXR0ZXIgdG8gYXQKPiA+IGxlYXN0IHByb3Rl Y3QgdGhpcyBjb3JuZXIuCj4gPgo+ID4gU3VnZ2VzdGVkLWJ5OiBQYXVsbyBaYW5vbmkgPHBhdWxv LnIuemFub25pQGludGVsLmNvbT4KPiA+IEZpeGVzOiA1NTVlMzhkMjczMTcgKCJkcm0vaTkxNS9j bmw6IERESSAtIFBMTCBtYXBwaW5nIikKPiA+IEZpeGVzOiA1NDE2ZDg3MTEzNmQgKCJkcm0vaTkx NS9za2w6IFNldCB0aGUgZURQIGxpbmsgcmF0ZSBvbiBEUExMMCIpCj4gPiBDYzogUGF1bG8gWmFu b25pIDxwYXVsby5yLnphbm9uaUBpbnRlbC5jb20+Cj4gPiBDYzogVmlsbGUgU3lyasOkbMOkIDx2 aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNvbT4KPiA+IENjOiBNYWFydGVuIExhbmtob3JzdCBt YWFydGVuLmxhbmtob3JzdEBsaW51eC5pbnRlbC5jb20KPiA+IFNpZ25lZC1vZmYtYnk6IFJvZHJp Z28gVml2aSA8cm9kcmlnby52aXZpQGludGVsLmNvbT4KPiA+IC0tLQo+ID4gIGRyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2RkaS5jIHwgNCArKysrCj4gPiAgMSBmaWxlIGNoYW5nZWQsIDQgaW5z ZXJ0aW9ucygrKQo+ID4KPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9kZGkuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RkaS5jCj4gPiBpbmRleCAzNjlm NzgwNTg4ZmIuLmY2MjRiYThlMjNiZSAxMDA2NDQKPiA+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX2RkaS5jCj4gPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGku Ywo+ID4gQEAgLTIwOTUsNiArMjA5NSw4IEBAIHN0YXRpYyB2b2lkIGludGVsX2RkaV9jbGtfc2Vs ZWN0KHN0cnVjdCBpbnRlbF9lbmNvZGVyICplbmNvZGVyLAo+ID4gIAlpZiAoV0FSTl9PTighcGxs KSkKPiA+ICAJCXJldHVybjsKPiA+ICAKPiA+ICsJIG11dGV4X2xvY2soJmRldl9wcml2LT5kcGxs X2xvY2spOwo+ID4gKwo+ID4gIAlpZiAoSVNfQ0FOTk9OTEFLRShkZXZfcHJpdikpIHsKPiA+ICAJ CS8qIENvbmZpZ3VyZSBEUENMS0FfQ0ZHQ1IwIHRvIG1hcCB0aGUgRFBMTCB0byB0aGUgRERJLiAq Lwo+ID4gIAkJdmFsID0gSTkxNV9SRUFEKERQQ0xLQV9DRkdDUjApOwo+ID4gQEAgLTIxMjQsNiAr MjEyNiw4IEBAIHN0YXRpYyB2b2lkIGludGVsX2RkaV9jbGtfc2VsZWN0KHN0cnVjdCBpbnRlbF9l bmNvZGVyICplbmNvZGVyLAo+ID4gIAl9IGVsc2UgaWYgKElOVEVMX0lORk8oZGV2X3ByaXYpLT5n ZW4gPCA5KSB7Cj4gPiAgCQlJOTE1X1dSSVRFKFBPUlRfQ0xLX1NFTChwb3J0KSwgaHN3X3BsbF90 b19kZGlfcGxsX3NlbChwbGwpKTsKPiA+ICAJfQo+ID4gKwo+ID4gKwltdXRleF91bmxvY2soJmRl dl9wcml2LT5kcGxsX2xvY2spOwo+ID4gIH0KPiA+ICAKPiA+ICBzdGF0aWMgdm9pZCBpbnRlbF9k ZGlfY2xrX2Rpc2FibGUoc3RydWN0IGludGVsX2VuY29kZXIgKmVuY29kZXIpCj4gCj4gV2hhdCBp cyB0aGUgZGlmZmVyZW5jZSBiZXR3ZWVuIHYxIGFuZCB0aGlzPyBDaGFuZ2Vsb2cgd291bGQgYmUg bmljZSwgb3IgYSBjb21tZW50IHRoYXQgeW91IHJlc2VudCBpdC4gOikKCm5vIGRpZmZlcmVuY2Ug YXQgYWxsLi4uICBidXQgSSBmb3Jnb3QgdG8gYWRkIHRoZSBtZW50aW9uIG9mIHRoZSByZWJhc2Ug b24gdGhlIHJpZ2h0IGJyYW5jaC4KCj4gCj4gUGF0Y2ggbG9va3Mgc2FuZSwgc28gUmV2aWV3ZWQt Ynk6IE1hYXJ0ZW4gTGFua2hvcnN0IDxtYWFydGVuLmxhbmtob3JzdEBsaW51eC5pbnRlbC5jb20+ CgpUaGFua3MuLi4gTWVyZ2luZyB0aGlzIG5vdy4uLgoKPiAKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1n ZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21h aWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==