From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89261C432C3 for ; Thu, 21 Nov 2019 11:46:17 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 68C37208A3 for ; Thu, 21 Nov 2019 11:46:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 68C37208A3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 992496EE54; Thu, 21 Nov 2019 11:46:16 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3210D6EE13; Thu, 21 Nov 2019 11:46:15 +0000 (UTC) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Nov 2019 03:46:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,224,1571727600"; d="scan'208";a="216119105" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.163]) by fmsmga001.fm.intel.com with SMTP; 21 Nov 2019 03:46:10 -0800 Received: by lahna (sSMTP sendmail emulation); Thu, 21 Nov 2019 13:46:10 +0200 Date: Thu, 21 Nov 2019 13:46:10 +0200 From: Mika Westerberg To: "Rafael J. Wysocki" Subject: Re: [PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges Message-ID: <20191121114610.GW11621@lahna.fi.intel.com> References: <20191120120913.GE11621@lahna.fi.intel.com> <20191120151542.GH11621@lahna.fi.intel.com> <20191120155301.GL11621@lahna.fi.intel.com> <20191121112821.GU11621@lahna.fi.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.12.1 (2019-06-15) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Karol Herbst , Linux PM , Linux PCI , Mario Limonciello , "Rafael J . Wysocki" , LKML , dri-devel , Bjorn Helgaas , nouveau Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191121114610.4pej9h1acfgIR4ssN2d-E1gUuMfVflmF0-rrgCUQvRo@z> T24gVGh1LCBOb3YgMjEsIDIwMTkgYXQgMTI6MzQ6MjJQTSArMDEwMCwgUmFmYWVsIEouIFd5c29j a2kgd3JvdGU6Cj4gT24gVGh1LCBOb3YgMjEsIDIwMTkgYXQgMTI6MjggUE0gTWlrYSBXZXN0ZXJi ZXJnCj4gPG1pa2Eud2VzdGVyYmVyZ0BpbnRlbC5jb20+IHdyb3RlOgo+ID4KPiA+IE9uIFdlZCwg Tm92IDIwLCAyMDE5IGF0IDExOjI5OjMzUE0gKzAxMDAsIFJhZmFlbCBKLiBXeXNvY2tpIHdyb3Rl Ogo+ID4gPiA+IGxhc3Qgd2VlayBvciBzbyBJIGZvdW5kIHN5c3RlbXMgd2hlcmUgdGhlIEdQVSB3 YXMgdW5kZXIgdGhlICJQQ0kKPiA+ID4gPiBFeHByZXNzIFJvb3QgUG9ydCIgKG5hbWUgZnJvbSBs c3BjaSkgYW5kIG9uIHRob3NlIHN5c3RlbXMgYWxsIG9mIHRoYXQKPiA+ID4gPiBzZWVtcyB0byB3 b3JrLiBTbyBJIGFtIHdvbmRlcmluZyBpZiBpdCdzIGluZGVlZCBqdXN0IHRoZSAweDE5MDEgb25l LAo+ID4gPiA+IHdoaWNoIGFsc28gZXhwbGFpbnMgTWlrYXMgY2FzZSB0aGF0IFRodW5kZXJib2x0 IHN0dWZmIHdvcmtzIGFzIGRldmljZXMKPiA+ID4gPiBuZXZlciBnZXQgcG9wdWxhdGVkIHVuZGVy IHRoaXMgcGFydGljdWxhciBicmlkZ2UgY29udHJvbGxlciwgYnV0IHVuZGVyCj4gPiA+ID4gdGhv c2UgIlJvb3QgUG9ydCJzCj4gPiA+Cj4gPiA+IEl0IGFsd2F5cyBpcyBhIFBDSWUgcG9ydCwgYnV0 IGl0cyBsb2NhdGlvbiB3aXRoaW4gdGhlIFNvQyBtYXkgbWF0dGVyLgo+ID4KPiA+IEV4YWN0bHku IEludGVsIGhhcmR3YXJlIGhhcyBQQ0llIHBvcnRzIG9uIENQVSBzaWRlICh0aGVzZSBhcmUgY2Fs bGVkCj4gPiBQRUcsIFBDSSBFeHByZXNzIEdyYXBoaWNzLCBwb3J0cyksIGFuZCB0aGUgUENIIHNp ZGUuIEkgdGhpbmsgdGhlIElQIGlzCj4gPiBzdGlsbCB0aGUgc2FtZS4KPiA+Cj4gPiA+IEFsc28g c29tZSBjdXN0b20gQU1MLWJhc2VkIHBvd2VyIG1hbmFnZW1lbnQgaXMgaW52b2x2ZWQgYW5kIHRo YXQgbWF5Cj4gPiA+IGJlIG1ha2luZyBzcGVjaWZpYyBhc3N1bXB0aW9ucyBvbiB0aGUgY29uZmln dXJhdGlvbiBvZiB0aGUgU29DIGFuZCB0aGUKPiA+ID4gR1BVIGF0IHRoZSB0aW1lIG9mIGl0cyBp bnZvY2F0aW9uIHdoaWNoIHVuZm9ydHVuYXRlbHkgYXJlIG5vdCBrbm93biB0bwo+ID4gPiB1cy4K PiA+ID4KPiA+ID4gSG93ZXZlciwgaXQgbG9va3MgbGlrZSB0aGUgQU1MIGludm9rZWQgdG8gcG93 ZXIgZG93biB0aGUgR1BVIGZyb20KPiA+ID4gYWNwaV9wY2lfc2V0X3Bvd2VyX3N0YXRlKCkgZ2V0 cyBjb25mdXNlZCBpZiBpdCBpcyBub3QgaW4gUENJIEQwIGF0Cj4gPiA+IHRoYXQgcG9pbnQsIHNv IGl0IGxvb2tzIGxpa2UgdGhhdCBBTUwgdHJpZXMgdG8gYWNjZXNzIGRldmljZSBtZW1vcnkgb24K PiA+ID4gdGhlIEdQVSAoYmV5b25kIHRoZSBQQ0kgY29uZmlnIHNwYWNlKSBvciBzaW1pbGFyIHdo aWNoIGlzIG5vdAo+ID4gPiBhY2Nlc3NpYmxlIGluIFBDSSBwb3dlciBzdGF0ZXMgYmVsb3cgRDAu Cj4gPgo+ID4gT3IgdGhlIFBDSSBjb25maWcgc3BhY2Ugb2YgdGhlIEdQVSB3aGVuIHRoZSBwYXJl bnQgcm9vdCBwb3J0IGlzIGluIEQzaG90Cj4gPiAoYXMgaXQgaXMgdGhlIGNhc2UgaGVyZSkuIEFs c28gdGhlbiB0aGUgR1BVIGNvbmZpZyBzcGFjZSBpcyBub3QKPiA+IGFjY2Vzc2libGUuCj4gCj4g V2h5IHdvdWxkIHRoZSBwYXJlbnQgcG9ydCBiZSBpbiBEM2hvdCBhdCB0aGF0IHBvaW50PyAgV291 bGRuJ3QgdGhhdCBiZQo+IGEgc3VzcGVuZCBvcmRlcmluZyB2aW9sYXRpb24/CgpOby4gV2UgcHV0 IHRoZSBHUFUgaW50byBEM2hvdCBmaXJzdCwgdGhlbiB0aGUgcm9vdCBwb3J0IGFuZCB0aGVuIHR1 cm4Kb2ZmIHRoZSBwb3dlciByZXNvdXJjZSAod2hpY2ggaXMgYXR0YWNoZWQgdG8gdGhlIHJvb3Qg cG9ydCkgcmVzdWx0aW5nCnRoZSB0b3BvbG9neSBlbnRlcmluZyBEM2NvbGQuCgo+ID4gSSB0b29r IGEgbG9vayBhdCB0aGUgSFAgT21lbiBBQ1BJIHRhYmxlcyB3aGljaCBoYXMgc2ltaWxhciBwcm9i bGVtIGFuZAo+ID4gdGhlcmUgaXMgYWxzbyBjaGVjayBmb3IgV2luZG93cyA3IChidXQgbm90IExp bnV4KSBzbyBJIHRoaW5rIG9uZQo+ID4gYWx0ZXJuYXRpdmUgd29ya2Fyb3VuZCB3b3VsZCBiZSB0 byBhZGQgdGhlc2UgZGV2aWNlcyBpbnRvCj4gPiBhY3BpX29zaV9kbWlfdGFibGVbXSB3aGVyZSAu Y2FsbGJhY2sgaXMgc2V0IHRvIGRtaV9kaXNhYmxlX29zaV93aW44IChvcgo+ID4gcGFzcyAnYWNw aV9vc2k9IiFXaW5kb3dzIDIwMTIiJyBpbiB0aGUga2VybmVsIGNvbW1hbmQgbGluZSkuCj4gCj4g SSdkIGxpa2UgdG8gdW5kZXJzdGFuZCB0aGUgZmFjdHMgdGhhdCBoYXZlIGJlZW4gZXN0YWJsaXNo ZWQgc28gZmFyCj4gYmVmb3JlIGRlY2lkaW5nIHdoYXQgdG8gZG8gYWJvdXQgdGhlbS4gOi0pCgpZ ZXMsIEkgYWdyZWUgOikKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Au b3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRl dmVs