From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= Subject: Re: Stupid NVIDIA 3D vgaarb.c patch Date: Tue, 23 Sep 2014 18:25:09 +0200 Message-ID: <20140923182509.46decd46@neptune.home> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from hygieia.santi-shop.eu (hygieia.santi-shop.eu [78.46.175.2]) by gabe.freedesktop.org (Postfix) with ESMTP id 420F66E270 for ; Tue, 23 Sep 2014 09:25:21 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: C =?UTF-8?B?QmVyZ3N0csO2bQ==?= Cc: Linux Kernel Mailing List , dri-devel@lists.freedesktop.org, Alex Williamson , Linus Torvalds List-Id: dri-devel@lists.freedesktop.org T24gTW9uLCAyMiBTZXB0ZW1iZXIgMjAxNCBMaW51cyBUb3J2YWxkcyA8dG9ydmFsZHNAbGludXgt Zm91bmRhdGlvbi5vcmc+IHdyb3RlOgo+IEFkZGluZyBwcm9wZXIgcGVvcGxlIGFuZCBtYWlsaW5n IGxpc3RzLi4KPiAKPiBUaGUgUENJX0NMQVNTX0RJU1BMQVlfVkdBIHRlc3QgZ29lcyBiYWNrIHRv IHRoZSB2ZXJ5IGJlZ2lubmluZyBieQo+IEJlbkgsIGFuZCBJIGhhdmUgbm8gaWRlYSBpZiBhZGRp bmcgUENJX0NMQVNTX0RJU1BMQVlfM0QgaXMKPiBhcHByb3ByaWF0ZSwgYnV0IGhvcGVmdWxseSBz b21lYm9keSBkb2VzLiBUaGUgZmFjdCB0aGF0IGl0IG1ha2VzCj4gdGhpbmdzIHdvcmsgY2VydGFp bmx5IGFyZ3VlcyBmYWlybHkgY29udmluY2luZ2x5IGZvciBpdCwgYnV0IEkgd2FudAo+IHNvbWUg YmFja3VwIGhlcmUuCj4gCj4gRGF2ZSwgQmVuSD8KPiAKPiBDaHJpc3RvcGhlcig/KSwgY2FuIHlv dSBwbGVhc2UgYWxzbyBzcGVjaWZ5IHdoaWNoIGxhcHRvcCBldGMuIEFuZCB0aGUKPiBwYXRjaCBp dHNlbGYgc2VlbXMgdG8gaGF2ZSBjb21lIGZyb20gc29tZWJvZHkgZWxzZSwgdW5sZXNzIHlvdSdy ZQo+IExla2Vuc3RleW4uIFNvIHdlJ2Qgd2FudCB0byBnZXQgdGhlIHByb3ZlbmFuY2Ugb2YgdGhh dCB0b28uCgpNb3JlIGEgcXVlc3Rpb24gdG8gQ2hyaXN0b3BoZXIsIGJ1dCB3aGF0IGNyaXRlcmlh IGlzIHByZXZlbnRpbmcgdGhlIHVzZQpvZiB0aGUgTlZJRElBIEdQVSB1bmRlciB0aGlzIGNvbmRp dGlvbj8KCkFzIGZhciBhcyBJJ3ZlIHNlZW4gb24gbXkgKHNpbmdsZS1HUFUpIHN5c3RlbXMgWCBy ZXF1aXJlcyB0aGUgR1BVIHRvCmhhdmUgYm9vdF92Z2E9MSBzeXNmcyBhdHRyaWJ1dGUgdG8gYWNj ZXB0IGF1dG9jb25maWd1cmF0aW9uICh0aG91Z2gKd2l0aCB0d28gR1BVcyBhbmQgb3B0aW11cy9z d2l0Y2hlcm9vIGludGVyYWN0aW9uIGJldHdlZW4gdGhlIEdQVXMgbWF5CmNoYW5nZSB0aGUgcGlj dHVyZSkuCgpJJ3ZlIGJlZW4gbG9va2luZyBhdCB0aGUgb3Blbiwgbm91dmVhdSBzaWRlIG9mIHRo aW5ncyBvbmx5LiBJZiBOVklESUEKY2xvc2VkIGRyaXZlciBoYXMgc29tZSBvdGhlciByZXF1aXJl bWVudCwgSSBkb24ndCBrbm93LgoKQnV0IGFzIGhlcmUgdGhlIGludGVudGlvbiBzZWVtcyB0byBi ZSB0byB1c2UgZXhjbHVzaXZlbHkgdGhlIE5WSURJQSBHUFUKanVzdCBsZWF2aW5nIHRoZSBJR0Qg YWxvbmcgaXQgc2hvdWxkIHJlcXVpcmUgZXhwbGljaXQgWCBjb25maWd1cmF0aW9uCndoaWNoIHRo ZW4gZG9lcyBub3QgY2FyZSBhYm91dCBib290X3ZnYS4KCgpBIG1vcmUgZGV0YWlsZWQgZGVzY3Jp cHRpb24gb2Ygd2hhdCBwcmV2ZW50cyBvcGVyYXRpb24gd2l0aCBHUFUgbm90CmJlaW5nIGFkZGVk IHRvIHZnYWFyYiB3b3VsZCBjZXJ0YWlubHkgaGVscCB1bmRlcnN0YW5kaW5nIHdoYXQgaGFwcGVu cywKd2hhdCBpcyBleHBlY3RlZCBhbmQgd2hlcmUgdGhpbmdzIGRpZmZlci4KCkJydW5vCgo+ICAg ICAgICAgICAgICAgICBMaW51cwo+IAo+IE9uIE1vbiwgU2VwIDIyLCAyMDE0IGF0IDE6MjggUE0s IEMgQmVyZ3N0csO2bSA8Y2JlcmdzdHJvbUBwYXRoc2NhbGUuY29tPiB3cm90ZToKPiA+IEhpIExp bnVzLAo+ID4KPiA+IEkgZG9uJ3Qga25vdyB3aG8gdGhlIG9yaWdpbmFsIGF1dGhvciBpcyBhbmQg SSBjYW4gaGF2ZSBvbmUgb2YgdGhlIGRpc3Rybwo+ID4gZ3JhcGhpY3MgZnJpZW5kcyByZXZpZXcg aXQsIGJ1dCBJIG5lZWQgdGhpcyBwYXRjaCBiZWxvdyB0byBnZXQgTlZJRElBCj4gPiBkcml2ZXJz IHRvIHdvcmsgKHdpdGhvdXQgdXNpbmcgYW55IEludGVsIGdyYXBoaWNzKSBvbiBteSBsYXB0b3AK PiA+IGh0dHA6Ly9wYXN0ZWJpbi5jb20vd3BtRmkzOGsKPiA+Cj4gPiBTb3JyeSAtIEkga25vdyB0 aGlzIGlzIG5vdCB0aGUgcHJvcGVyIHdheSB0byBzdWJtaXQgYSBwYXRjaCwgYnV0IGl0J3MKPiA+ IHRyaXZpYWwgYW5kIEknbSBub3QgYSBrZXJuZWwgZGV2Lgo+ID4KPiA+IFRoYW5rcwo+ID4KPiA+ IC4vQwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmkt ZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDov L2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756320AbaIWQbQ (ORCPT ); Tue, 23 Sep 2014 12:31:16 -0400 Received: from hygieia.santi-shop.eu ([78.46.175.2]:42905 "EHLO hygieia.santi-shop.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754836AbaIWQbN convert rfc822-to-8bit (ORCPT ); Tue, 23 Sep 2014 12:31:13 -0400 X-Greylist: delayed 353 seconds by postgrey-1.27 at vger.kernel.org; Tue, 23 Sep 2014 12:31:13 EDT Date: Tue, 23 Sep 2014 18:25:09 +0200 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= To: C =?UTF-8?B?QmVyZ3N0csO2bQ==?= Cc: Linus Torvalds , dri-devel@lists.freedesktop.org, David Airlie , Alex Williamson , Benjamin Herrenschmidt , Linux Kernel Mailing List Subject: Re: Stupid NVIDIA 3D vgaarb.c patch Message-ID: <20140923182509.46decd46@neptune.home> In-Reply-To: References: X-Mailer: Claws Mail 3.10.1 (GTK+ 2.24.24; i686-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 22 September 2014 Linus Torvalds wrote: > Adding proper people and mailing lists.. > > The PCI_CLASS_DISPLAY_VGA test goes back to the very beginning by > BenH, and I have no idea if adding PCI_CLASS_DISPLAY_3D is > appropriate, but hopefully somebody does. The fact that it makes > things work certainly argues fairly convincingly for it, but I want > some backup here. > > Dave, BenH? > > Christopher(?), can you please also specify which laptop etc. And the > patch itself seems to have come from somebody else, unless you're > Lekensteyn. So we'd want to get the provenance of that too. More a question to Christopher, but what criteria is preventing the use of the NVIDIA GPU under this condition? As far as I've seen on my (single-GPU) systems X requires the GPU to have boot_vga=1 sysfs attribute to accept autoconfiguration (though with two GPUs and optimus/switcheroo interaction between the GPUs may change the picture). I've been looking at the open, nouveau side of things only. If NVIDIA closed driver has some other requirement, I don't know. But as here the intention seems to be to use exclusively the NVIDIA GPU just leaving the IGD along it should require explicit X configuration which then does not care about boot_vga. A more detailed description of what prevents operation with GPU not being added to vgaarb would certainly help understanding what happens, what is expected and where things differ. Bruno > Linus > > On Mon, Sep 22, 2014 at 1:28 PM, C Bergström wrote: > > Hi Linus, > > > > I don't know who the original author is and I can have one of the distro > > graphics friends review it, but I need this patch below to get NVIDIA > > drivers to work (without using any Intel graphics) on my laptop > > http://pastebin.com/wpmFi38k > > > > Sorry - I know this is not the proper way to submit a patch, but it's > > trivial and I'm not a kernel dev. > > > > Thanks > > > > ./C