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Date:      Tue, 1 Sep 2020 16:30:40 +0200
From:      Niclas Zeising <zeising@freebsd.org>
To:        meloun.michal@gmail.com, Emmanuel Vadot <manu@bidouilliste.com>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r364737 - head/sys/dev/drm2
Message-ID:  <ac26fa5c-f5c5-0e3a-85c8-574e4ab3f979@freebsd.org>
In-Reply-To: <6a57348b-213a-8535-e36b-b09be14eb934@gmail.com>
References:  <202008242253.07OMrNO2016612@repo.freebsd.org> <790db2ea-0877-671e-e48f-ec6da42c7437@gmail.com> <20200901151635.91c121acb2bf58e9282aa6ae@bidouilliste.com> <235f7f25-4e38-9154-e990-11aa6f8464d4@freebsd.org> <6a57348b-213a-8535-e36b-b09be14eb934@gmail.com>

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On 2020-09-01 16:10, Michal Meloun wrote:
>=20
>=20
> On 01.09.2020 15:32, Niclas Zeising wrote:
>> On 2020-09-01 15:16, Emmanuel Vadot wrote:
>>> On Tue, 1 Sep 2020 15:13:53 +0200
>>> Michal Meloun <meloun.michal@gmail.com> wrote:
>>>
>>>>
>>>>
>>>> On 25.08.2020 0:53, Niclas Zeising wrote:
>>>>> Author: zeising (doc,ports committer)
>>>>> Date: Mon Aug 24 22:53:23 2020
>>>>> New Revision: 364737
>>>>> URL: https://svnweb.freebsd.org/changeset/base/364737
>>>>>
>>>>> Log:
>>>>>  =C2=A0=C2=A0 drm2: Update deprecation message
>>>>>  =C2=A0=C2=A0 =C2=A0=C2=A0 Update the deprecation message in the dr=
m2 (aka legacy drm)
>>>>> drivers to point
>>>>>  =C2=A0=C2=A0 towards the graphics/drm-kmod ports for all architect=
ures, not
>>>>> just amd64.
>>>> Only known user of drm2 is arm/tegra124 based boards. How
>>>> graphics/drm-kmod can help for these?
>>>> Or be more specific - drm2 allows me to hot-plug monitor to tegra ba=
sed
>>>> board an use 2 scaled overlay planes (which is exactly whats I want =
for
>>>>  =C2=A0 my application). Which alternative can you offer me?
>>>> Btw, as you can see, the maintenance cost of drm2 is close to zero a=
nd
>>>> the dev/drm2 code does not inherit with any of the major architectur=
es.
>>>>
>>>> Michal
>>>
>>>  =C2=A0 I think that the goal was only to mfc this to warn users befo=
re 12.2
>>> is branched, maybe a direct commit to 12 would have been better.
>>>
>>
>> No, the change is correct.
>> drm-legacy-kmod (the port) is going away, especially on FreeBSD 13,
>> since it is preventing updates to the FreeBSD VM subsystem.=C2=A0 I se=
nt
>> an-email about this to a variety of lists about a week ago.
>> I do know that there are a few special users of drm2 in FreeBSD curren=
t,
>> I do not know how those are affected.=C2=A0 Since, on FreeBSD current,=
 most
>> architectures can use drm-kmod, I believe it is good to point everyone
>> towards that ports, instead of pointing everyone except amd64 users to
>> drm-legacy-kmod.
>=20
> No, this change is not correct.
> You *newly* point ARM drm2 users to use a port marked with
> "ONLY_FOR_ARCHS=3D amd64 i386 powerpc64"
> Do you think that this is correct behavior?
>=20
> So again. I have not a single problem with drm-legacy-kmod removal,
> I have not a problem with pointing users of supported architectures (by
> kmod-*) to right port.
> But I have problem with marking drm2 driver as obsolete for ARM
> architecture (without single rational reason) and/or by pointing ARM
> users of drm2 driver to not-existent port.
> Michal
>=20

I am only improving an already existing message.  Previously, it would=20
point people to drm-legacy-kmod on all architectures except amd64.  This=20
is wrong, since drm-legacy-kmod will be removed.  drm-legacy-kmod is=20
causing issues and preventing updates to other areas of FreeBSD, as I=20
clearly stated in an email sent to current, ports, x11 and stable=20
mailing lists.  drm-current-kmod is only available on i386, amd64 and=20
powerpc64.  drm-devel-kmod is available on further architectures,=20
covering almost all of the FreeBSD on desktop segment.
With the work manu is doing, this will improve further.
For FreeBSD 12, the situation is slightly different, since=20
drm-fbsd12.1-kmod has less support.  However, drm-legacy is available in=20
base there, and once again, with the work manu is doing, support for=20
further architectures might be possible even on FreeBSD 12.
I have no objections if you want to opt out of the message on your tegra=20
boards, but I do not want us to point users to a port that is deprecated=20
and slated for removal.
Regards
--=20
Niclas Zeising



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