From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH v3] drm/i915: Avoid GPU Hang when comming out of s3 or s4 Date: Mon, 11 May 2015 13:55:58 +0200 Message-ID: <20150511115558.GC15256@phenom.ffwll.local> References: <1431330645-26704-1-git-send-email-peter.antoine@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wg0-f53.google.com (mail-wg0-f53.google.com [74.125.82.53]) by gabe.freedesktop.org (Postfix) with ESMTP id 41C036E3D0 for ; Mon, 11 May 2015 04:53:39 -0700 (PDT) Received: by wgin8 with SMTP id n8so125667858wgi.0 for ; Mon, 11 May 2015 04:53:38 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1431330645-26704-1-git-send-email-peter.antoine@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Peter Antoine Cc: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, david.weinehall@intel.com, yex.tian@intel.com, deepak.s@intel.com List-Id: intel-gfx@lists.freedesktop.org T24gTW9uLCBNYXkgMTEsIDIwMTUgYXQgMDg6NTA6NDVBTSArMDEwMCwgUGV0ZXIgQW50b2luZSB3 cm90ZToKPiBUaGlzIHBhdGNoIGZpeGVzIGEgdGltaW5nIGlzc3VlIHRoYXQgY2F1c2VzIGEgR1BV IGhhbmcgd2hlbiB0aGUgc3lzdGVtCj4gY29tZXMgb3V0IG9mIHBvd2VyIHNhdmluZy4KPiAKPiBE dXJpbmcgcG1fcmVzdW1lLCBXZSBhcmUgc3VibWl0dGluZyBiYXRjaGJ1ZmZlcnMgYmVmb3JlIGVu YWJsaW5nCj4gSW50ZXJydXB0cyB0aGlzIGlzIGNhdXNpbmcgdXMgdG8gbWlzcyB0aGUgY29udGV4 dCBzd2l0Y2ggaW50ZXJydXB0LAo+IGFuZCBpbiBjb25zZXF1ZW5jZSBpbnRlbF9leGVjbGlzdHNf aGFuZGxlX2N0eF9ldmVudHMgaXMgbm90IHRyaWdnZXJlZC4KPiAKPiBUaGlzIHBhdGNoIGlzIGJh c2VkIG9uIGEgcGF0Y2ggZnJvbSBEZWVwYWsgUyA8ZGVlcGFrLnNAaW50ZWwuY29tPgo+IGZyb20g YW5vdGhlciBwbGF0Zm9ybS4KPiAKPiBUaGUgcGF0Y2ggZml4ZXMgYW4gaXNzdWUgaW50cm9kdWNl ZCBieToKPiAgIGNvbW1pdCBlNzc3OGJlMWVhYjkxODI3NGY3OTYwM2Q3YzE3YjNlYzhiZTc3Mzg2 Cj4gICBkcm0vaTkxNTogRml4IHN0YXJ0dXAgZmFpbHVyZSBpbiBMUkMgbW9kZSBhZnRlciByZWNl bnQgaW5pdCBjaGFuZ2VzCj4gCj4gVGhlIGFib3ZlIHBhdGNoIGFkZGVkIGEgY2FsbCB0byBpbml0 X2NvbnRleHQoKSB0byBmaXggYW4gaXNzdWUgaW50cm9kdWNlZAo+IGJ5IGEgcHJldmlvdXMgcGF0 Y2guIEJ1dCwgaXQgdGhlbiBvcGVuZWQgdXAgYSBzbWFsbCB0aW1pbmcgd2luZG93IGZvciB0aGUK PiBiYXRjaGVzIGJlaW5nIGFkZGVkIGJ5IHRoZSBpbml0X2NvbnRleHQgKGJhc2ljYWxseSBzZXR0 aW5nIHVwIHRoZSBjb250ZXh0KQo+IHRvIGNvbXBsZXRlIGJlZm9yZSB0aGUgaW50ZXJydXB0cyBo YXZlIGJlZW4gdHVybmVkIG9uLCB0aHVzIGhhbmdpbmcgdGhlCj4gR1BVLgo+IAo+IEJVRzogaHR0 cHM6Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9ODk2MDAKPiBTaWduZWQt b2ZmLWJ5OiBQZXRlciBBbnRvaW5lIDxwZXRlci5hbnRvaW5lQGludGVsLmNvbT4KCmJ0dyBjYW4g eW91IHBsZWFzZSBmb2xsb3cgdXAgd2l0aCBhIHBhdGNoIHRvIGVuY29kZSB0aGVzZSBkZXBlbmNp ZXM/IEEKCldBUk5fT04oIWlycXNfZW5hYmxlZCk7CgppbiBleGVjbGlzdHNfY29udGV4dF91bnF1 ZXVlIGFmdGVyIHRoZSBzcGlubG9jayBhc3NlcnQgd291bGQgYmUgZ29vZCBJCnRoaW5rLgotRGFu aWVsCgo+IC0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5jIHwgMTAgKysrKysr Ky0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgNyBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQo+ IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5jIGIvZHJpdmVy cy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYuYwo+IGluZGV4IDZiYjZjNDcuLjkwYjEzMDkgMTAwNjQ0 Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYuYwo+ICsrKyBiL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2k5MTVfZHJ2LmMKPiBAQCAtNzM0LDYgKzczNCwxMiBAQCBzdGF0aWMgaW50 IGk5MTVfZHJtX3Jlc3VtZShzdHJ1Y3QgZHJtX2RldmljZSAqZGV2KQo+ICAJaW50ZWxfaW5pdF9w Y2hfcmVmY2xrKGRldik7Cj4gIAlkcm1fbW9kZV9jb25maWdfcmVzZXQoZGV2KTsKPiAgCj4gKwkv KiBJbnRlcnJ1cHRzIGhhdmUgdG8gZW5hYmxlZCBzbyB0aGF0IGFueSBiYXRjaGVzIHRoYXQgYXJl IGNvbXBsZXRlZAo+ICsJICogd2hlbiB0aGUgY29udGV4dCBpcyByZXN0YXJ0ZWQgYXJlIGNhdWdo dCBzbyB0aGF0IHRoZSByaW5nIGJ1ZmZlcgo+ICsJICogZG9lcyBub3QgaGFuZGxlLgo+ICsJICov Cj4gKwlpbnRlbF9ydW50aW1lX3BtX2VuYWJsZV9pbnRlcnJ1cHRzKGRldl9wcml2KTsKPiArCj4g IAltdXRleF9sb2NrKCZkZXYtPnN0cnVjdF9tdXRleCk7Cj4gIAlpZiAoaTkxNV9nZW1faW5pdF9o dyhkZXYpKSB7Cj4gIAkJRFJNX0VSUk9SKCJmYWlsZWQgdG8gcmUtaW5pdGlhbGl6ZSBHUFUsIGRl Y2xhcmluZyB3ZWRnZWQhXG4iKTsKPiBAQCAtNzQxLDkgKzc0Nyw3IEBAIHN0YXRpYyBpbnQgaTkx NV9kcm1fcmVzdW1lKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYpCj4gIAl9Cj4gIAltdXRleF91bmxv Y2soJmRldi0+c3RydWN0X211dGV4KTsKPiAgCj4gLQkvKiBXZSBuZWVkIHdvcmtpbmcgaW50ZXJy dXB0cyBmb3IgbW9kZXNldCBlbmFibGluZyAuLi4gKi8KPiAtCWludGVsX3J1bnRpbWVfcG1fZW5h YmxlX2ludGVycnVwdHMoZGV2X3ByaXYpOwo+IC0KPiArCS8qIFRoaXMgbXVzdCBmb2xsb3cgdGhl IHBtIGVuYWJsZSBpbnRlcnJ1cHRzICovCj4gIAlpbnRlbF9tb2Rlc2V0X2luaXRfaHcoZGV2KTsK PiAgCj4gIAlzcGluX2xvY2tfaXJxKCZkZXZfcHJpdi0+aXJxX2xvY2spOwo+IC0tIAo+IDEuOS4x Cj4gCgotLSAKRGFuaWVsIFZldHRlcgpTb2Z0d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRp b24KaHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5m by9pbnRlbC1nZngK