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From: Alex Hung <alex.hung@canonical.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Karol Herbst <kherbst@redhat.com>,
	Dave Airlie <airlied@gmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	nouveau <nouveau@lists.freedesktop.org>,
	Mario Limonciello <mario.limonciello@dell.com>,
	Ben Skeggs <bskeggs@redhat.com>, Dave Airlie <airlied@redhat.com>
Subject: Re: [Nouveau] [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to enable dGPU direct output"
Date: Mon, 9 Sep 2019 22:07:42 +0100
Message-ID: <CAJ=jquaLthK556Lqk-zc3GCOus90HoGs66tA=d9a1aju7iNpPw@mail.gmail.com> (raw)
In-Reply-To: <5228680.jBuKzensJx@kreacher>

On Thu, Sep 5, 2019 at 5:26 PM Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
>
> On Thursday, September 5, 2019 5:51:23 PM CEST Karol Herbst wrote:
> > is there any update on the testing with my patches? On the hardware I
> > had access to those patches helped, but I can't know if it also helped
> > on the hardware for which those workarounds where actually added.
>
> Alex Hung and Mario need to answer this question I think.

Sorry for taking a long time. I don't have full testing results yet
but we found at least a regression occurred with _OSI string removed -
it is not on nVidia hardware but on AMD PX one.

I will try to collect and share more details.

>
> > On Mon, Aug 19, 2019 at 11:52 AM Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> > >
> > > On Thursday, August 15, 2019 12:47:35 AM CEST Dave Airlie wrote:
> > > > On Thu, 15 Aug 2019 at 07:31, Karol Herbst <kherbst@redhat.com> wrote:
> > > > >
> > > > > This reverts commit 28586a51eea666d5531bcaef2f68e4abbd87242c.
> > > > >
> > > > > The original commit message didn't even make sense. AMD _does_ support it and
> > > > > it works with Nouveau as well.
> > > > >
> > > > > Also what was the issue being solved here? No references to any bugs and not
> > > > > even explaining any issue at all isn't the way we do things.
> > > > >
> > > > > And even if it means a muxed design, then the fix is to make it work inside the
> > > > > driver, not adding some hacky workaround through ACPI tricks.
> > > > >
> > > > > And what out of tree drivers do or do not support we don't care one bit anyway.
> > > > >
> > > >
> > > > I think the reverts should be merged via Rafael's tree as the original
> > > > patches went in via there, and we should get them in asap.
> > > >
> > > > Acked-by: Dave Airlie <airlied@redhat.com>
> > >
> > > The _OSI strings are to be dropped when all of the needed support is there in
> > > drivers, so they should go away along with the requisite driver changes.
> > >
> >
> > that goes beside the point. firmware level workarounds for GPU driver
> > issues were pushed without consulting with upstream GPU developers.
> > That's something which shouldn't have happened in the first place. And
> > yes, I am personally annoyed by the fact, that people know about
> > issues, but instead of contacting the proper persons and working on a
> > proper fix, we end up with stupid firmware level workarounds. I can't
> > see why we ever would have wanted such workarounds in the first place.
> >
> > And I would be much happier if the next time something like that comes
> > up, that the drm mailing list will be contacted as well or somebody
> > involved.
> >
> > We could have also just disable the feature inside the driver (and
> > probably we should have done that a long time ago, so that is
> > essentially our fault, but still....)
> >
> > > I'm all for dropping then when that's the case, so please feel free to add ACKs
> > > from me to the patches in question at that point.
> > >
> > > Cheers,
> > > Rafael
> > >
> > >
> > >
> >
>
>
>
>


-- 
Cheers,
Alex Hung

  reply index

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14 21:31 [PATCH 0/7] Adding a proper workaround for fixing RTD3 issues with Nouveau Karol Herbst
2019-08-14 21:31 ` [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to enable dGPU direct output" Karol Herbst
2019-08-14 21:49   ` Alex Hung
2019-08-14 22:47   ` [Nouveau] " Dave Airlie
2019-08-15 13:55     ` Mario.Limonciello
2019-08-15 14:04       ` Karol Herbst
2019-08-15 14:13         ` Alex Deucher
2019-08-15 14:15           ` Karol Herbst
2019-08-15 14:17             ` Alex Deucher
2019-08-15 14:23               ` Mario.Limonciello
2019-08-15 14:35                 ` Karol Herbst
2019-08-15 14:41                 ` Alex Deucher
2019-08-15 14:19         ` Mario.Limonciello
2019-08-15 14:25           ` Karol Herbst
2019-08-15 14:34             ` Mario.Limonciello
2019-08-15 14:36               ` Karol Herbst
2019-08-15 14:37             ` Alex Deucher
2019-08-15 14:56               ` Takashi Iwai
2019-08-15 16:19                 ` Mario.Limonciello
2019-08-15 17:43                   ` Takashi Iwai
2019-08-15 18:34                   ` Alex Deucher
2019-08-15 14:59               ` Alex Deucher
2019-08-15 14:11     ` Daniel Vetter
2019-08-19  9:52     ` Rafael J. Wysocki
2019-09-05 15:51       ` Karol Herbst
2019-09-05 16:26         ` Rafael J. Wysocki
2019-09-09 21:07           ` Alex Hung [this message]
2019-10-21  2:14           ` Alex Hung
2019-10-21  8:14             ` Rafael J. Wysocki
2019-10-21  8:48               ` Karol Herbst
2019-10-21  8:54                 ` Rafael J. Wysocki
2019-09-05 16:35         ` Alex Deucher
2019-08-14 21:31 ` [PATCH 2/7] Revert "ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio" Karol Herbst
2019-08-14 21:31 ` [PATCH 3/7] Revert "ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3" Karol Herbst
2019-08-14 23:34   ` Alex Hung
2019-08-15  4:44     ` Karol Herbst
2019-08-14 21:31 ` [PATCH 4/7] drm/nouveau/pci: enable pcie link changes for pascal Karol Herbst
2019-08-14 21:31 ` [PATCH 5/7] drm/nouveau/pci: add nvkm_pcie_get_speed Karol Herbst
2019-08-14 21:31 ` [PATCH 6/7] drm/nouveau/pci: save the boot pcie link speed and restore it on fini Karol Herbst
2019-08-14 21:31 ` [PATCH 7/7] drm/nouveau: abort runtime suspend if we hit an error Karol Herbst

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