From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [RFC PATCH] drm/vblanks: Deal with HW vblank counter resets. Date: Tue, 7 Nov 2017 13:26:57 +0200 Message-ID: <20171107112657.GP10981@intel.com> References: <20171107062617.4227-1-dhinakaran.pandiyan@intel.com> <20171107105031.GN10981@intel.com> <66ae9bf8-2aa1-5da8-c76e-aa3e14e5545f@daenzer.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <66ae9bf8-2aa1-5da8-c76e-aa3e14e5545f@daenzer.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Michel =?iso-8859-1?Q?D=E4nzer?= Cc: Daniel Vetter , intel-gfx@lists.freedesktop.org, Dhinakaran Pandiyan , dri-devel@lists.freedesktop.org, Rodrigo Vivi List-Id: dri-devel@lists.freedesktop.org T24gVHVlLCBOb3YgMDcsIDIwMTcgYXQgMTE6NTU6NDRBTSArMDEwMCwgTWljaGVsIETDpG56ZXIg d3JvdGU6Cj4gT24gMDcvMTEvMTcgMTE6NTAgQU0sIFZpbGxlIFN5cmrDpGzDpCB3cm90ZToKPiA+ IE9uIFR1ZSwgTm92IDA3LCAyMDE3IGF0IDEwOjQ3OjAwQU0gKzAxMDAsIE1pY2hlbCBEw6RuemVy IHdyb3RlOgo+ID4+IE9uIDA3LzExLzE3IDA3OjI2IEFNLCBEaGluYWthcmFuIFBhbmRpeWFuIHdy b3RlOgo+ID4+PiBTb21lIEhXIHZibGFuayBjb3VudGVycyByZXNldCBkdWUgdG8gcG93ZXIgbWFu YWdlbWVudCBldmVudHMsIHdoaWNoIG1lc3Nlcwo+ID4+PiB1cCB0aGUgdmJsYW5rIGNvdW50aW5n IGxvZ2ljLiBUaGlzIGxlYWRzIHRvIHNjcmVlbiBmcmVlemVzIHdpdGggdXNlciBzcGFjZQo+ID4+ PiB3YWl0aW5nIG9uIHZibGFuayBldmVudHMgdGhhdCBtYXkgbm90IG9jY3VyIGlmIHRoZSBjb3Vu dGVyIGtlZXBzIHJlc2V0dGluZy4KPiA+Pj4KPiA+Pj4gRm9yIGUuZy4sIEFmdGVyIHRoZSBIVyB2 YmxhbmsgY291bnRlciByZXNldHMKPiA+Pj4gWyAgICA5LjAwNzM1OV0gW2RybTpkcm1fdXBkYXRl X3ZibGFua19jb3VudCBbZHJtXV0gdXBkYXRpbmcgdmJsYW5rIGNvdW50Cj4gPj4+IG9uIGNydGMg MDogY3VycmVudD0yOTcsIGRpZmY9NDI5NDk2NTM4OSwgaHc9NSBod19sYXN0PTE5MTIKPiA+Pj4K PiA+Pj4gU28sIGZhbGwgYmFjayB0byB0aGUgU1cgY291bnRlciwgY29tcHV0ZWQgdXNpbmcgIHZi bGFuayB0aW1lc3RhbXBzCj4gPj4+IGFuZCBmcmFtZSBkdXJhdGlvbiwgd2hlbiB0aGUgSFcgY291 bnRlciB2YWx1ZSBkZXZpYXRlcyBieSA1MCUgb2YgdGhlIFNXCj4gPj4+IGNvbXB1dGVkIHZhbHVl Lgo+ID4+Pgo+ID4+PiBJIGhhdmUgdGVzdGVkIHRoaXMgcGF0Y2ggb24gbXkgU0tMIGxhcHRvcCB3 aXRoIGk5MTUuZW5hYmxlX3Bzcj0xIGFuZCBpdAo+ID4+PiAqc2VlbXMqIHRvIHNvbHZlIHRoZSBz Y3JlZW4gZnJlZXplIGlzc3VlIHNlZW4gd2l0aCBQU1Igd2hlbiBETUMgaXMgbG9hZGVkLgo+ID4+ Pgo+ID4+PiBLbm93biBpc3N1ZXM6Cj4gPj4+IDEpIFRoZSA1MCUgZGV2aWF0aW9uIG1hcmdpbiBp cyBhcmJpdHJhcnkuCj4gPj4+IDIpICJSZWR1bmRhbnQgdmJsaXJxIGlnbm9yZWQiIG1lc3NhZ2Vz IGFyZSBtb3JlIGZyZXF1ZW50Lgo+ID4+Pgo+ID4+PiBJIGFtIHNlbmRpbmcgdGhpcyBhcyBhbiBS RkMgdG8gZ2V0IGZlZWRiYWNrIG9uIHdoZXRoZXIgdGhlIGZhbGwgYmFjawo+ID4+PiBhcHByb2Fj aCBpcyBzYW5lIGFuZCBpZiBpdCBzaG91bGQgYmUgaW1wbGVtZW50ZWQgaW4gdGhlIGNvcmUuCj4g Pj4KPiA+PiBJcyB0aGVyZSBubyB3YXkgZm9yIHRoZSBkcml2ZXIgdG8ga25vdyB1bmRlciB3aGlj aCBjaXJjdW1zdGFuY2VzIHRoZQo+ID4+IHJlc2V0IHRvIDAgbWlnaHQgaGFwcGVuPyBJZiB0aGVy ZSBpcywgbWF5YmUgaXQgY291bGQgYmUgc29sdmVkIGJ5Cj4gPj4gY2FsbGluZyBkcm1fY3J0Y192 Ymxhbmtfb2ZmKCkgYmVmb3JlIGl0IG1pZ2h0IGhhcHBlbiBhbmQKPiA+PiBkcm1fY3J0Y192Ymxh bmtfb24oKSBhZnRlciBpdCBtaWdodCBoYXZlIGhhcHBlbmVkLgo+ID4+Cj4gPj4gT3RoZXJ3aXNl LCBtaWdodCBpdCBiZSBiZXR0ZXIgbm90IHRvIHVzZSB0aGUgSFcgY291bnRlciBhdCBhbGwgd2hl biBpdCdzCj4gPj4ga25vd24gbm90IHRvIGJlIHJlbGlhYmxlPwo+ID4gCj4gPiBZZWFoLCBJIHRo aW5rIHdlIGNvdWxkIGp1c3QgYXZvaWQgdXNpbmcgdGhlIEhXIGNvdW50ZXIgd2hlbmV2ZXIgdGhl cmUncwo+ID4gYSBwb3NzaWJpbGl0eSBvZiBQU1IgYmVpbmcgdXNlZCBvbiB0aGUgY3J0Yy4KPiA+ IAo+ID4gQXNzdW1pbmcgd2Ugc3RpbGwgd2FudCB0byB1c2UgdGhlIEhXIGNvdW50ZXIgb24gY3J0 Y3MgdGhhdCBjYW4ndCBkbyBQU1IsCj4gPiB3ZSdyZSBnb2luZyB0byBuZWVkIHNvbWUga2luZCBv ZiBwZXItY3J0YyBtZWNoYW5pc20gdG8gdGVsbCBkcm1fdmJsYW5rLmMKPiA+IHdoaWNoIG1ldGhv ZCB0byB1c2UuIGh3bW9kZS5wcml2YXRlX2ZsYWdzIGlzIG9uZSBvcHRpb24uIFdlIGFscmVhZHkg dXNlCj4gPiBpdCBmb3IgY2hvb3NpbmcgYmV0d2VlbiB0aGUgc2NhbmxpbmUgY291bnRlciBhbmQg aGFyZHdhcmUgdGltZXN0YW1wcyB3aGVuCj4gPiBjYWxjdWxhdGluZyB0aGUgc2Nhbm91dCBwb3Np dGlvbi4gQnV0IGluIHRoaXMgY2FzZSB0aGUgZmxhZyB3b3VsZG4ndCBiZQo+ID4gZXhhY3RseSBw cml2YXRlIHNpbmNlIGRybV92YmxhbmsuYyB3b3VsZCBoYXZlIHRvIGtub3cgYWJvdXQgaXQgYXMg d2VsbC4KPiA+IElmIHRoYXQgaXMgZGVlbWVkIHRvIGJlIGEgcHJvYmxlbSwgdGhlbiB3ZSBtaWdo dCBqdXN0IG5lZWQgdG8gYWRkIGEgYm9vbAo+ID4gdG8gc3RydWN0IGRybV92YmxhbmtfY3J0YyB0 byBpbmRpY2F0ZSB0aGF0IHRoZSBodyBjb3VudGVyIGlzIGdvb2QsIG9yCj4gPiBtYXliZSBldmVu IG1vdmUgdGhlIGRldi0+bWF4X3ZibGFua19jb3VudCB0byBsaXZlIGluc2lkZQo+ID4gc3RydWN0 IGRybV92YmxhbmtfY3J0Yy4KPiAKPiBPciBqdXN0IGFsbG93IHNldHRpbmcgc3RydWN0IGRybV92 YmxhbmtfY3J0YydzIGdldF92YmxhbmtfY291bnRlciBtZW1iZXIKPiB0byBOVUxMPwoKTG9va3Mg bGlrZSB0aGF0J3MgYWN0dWFsbHkgdW5kZXIgZHJtX2NydGNfZnVuY3MuIEknbSB0aGlua2luZyB3 ZSB3YW50CnRvIGtlZXAgdGhhdCBhcyBjb25zdC4gTm90IHN1cmUgd2Ugd2FudCB0byBhZGQgYSB0 aGlyZCB3YXkgZm9yIGRyaXZlcnMKdG8gcHJvdmlkZSBhIC5nZXRfdmJsYW5rX2NvdW50ZXIoKSBo b29rICh0aGUgc2Vjb25kIG9uZSBiZWluZyB0aGUKb2xkIGRybV9kcml2ZXIuZ2V0X3ZibGFua19j b3VudGVyKCkgaG9vaywgd2hpY2ggaTkxNSBpcyBzdGlsbCB1c2luZwphY3R1YWxseSkuCgotLSAK VmlsbGUgU3lyasOkbMOkCkludGVsIE9UQwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5m cmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0 aW5mby9pbnRlbC1nZngK