linux-kernel - Re: [PATCH] MAINTAINERS: Add Helge as fbdev maintainer

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Message-ID: <e19563aa-21a3-e13c-4143-847bd77a38c7@gmx.de>
Date:   Mon, 17 Jan 2022 17:21:49 +0100
From:   Helge Deller <deller@....de>
To:     Thomas Zimmermann <tzimmermann@...e.de>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        "airlied@...il.com" <airlied@...il.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Javier Martinez Canillas <javierm@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] MAINTAINERS: Add Helge as fbdev maintainer

On 1/17/22 16:58, Thomas Zimmermann wrote:
> Hi
>
> Am 17.01.22 um 16:42 schrieb Helge Deller:
>> [...]
>>>> c) reintroduce the state where fbcon is fast on fbdev. This is important for non-DRM machines,
>>>>     either when run on native hardware or in an emulator.
>>>> d) not break DRM development
>>>>
>>>> Especially regarding c) I complained in [1] and got no feedback. I really would like to
>>>> understand where the actual problems were and what's necessary to fix them.
>>>>
>>>> Helge
>>>>
>>>> [1] https://lore.kernel.org/r/feea8303-2b83-fc36-972c-4fc8ad723bde@gmx.de
>
> Seems like few people read linux-fbdev these days.
> I suggest to partly revert the patch to the point were performance
> gets better again.
Yes, *please*!
That would solve my biggest concern.

As far as I can see that's only 2 commits to be reverted:
b3ec8cdf457e - "fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)"
39aead8373b3 - "fbcon: Disable accelerated scrolling"for-next-next

I think both were not related to any 0-day bug reports (but again, I might be wrong).

Helge