Re: Soft scrolling on framebuffer consoles - with GPM Handling - revised for kernel 6.18.28 (etc.)

Hello, Ben.

On Tue, May 12, 2026 at 20:24:15 -0400, Ben Knoble wrote:


> > Le 12 mai 2026 à 18:20, Alan Mackenzie <[email protected]> a écrit :

> > Hello, Vitaly.

> >> On Wed, May 13, 2026 at 00:24:57 +0400, Vitaly Zdanevich wrote:
> >>   Thanks.

> > Thank you for trying it out!

> >>   Can it [patch to enable soft scrolling in the gentoo-sources kernel]
> >>   be integrated into gentoo-sources? Or with USE flag?

> > This would be difficult. ...

[ .... ]

> > So, while I would like the patch to be incorporated into gentoo-sources,
> > I can't see it as likely to happen.

> However, using /etc/portage/patches (or w/e the path is; on mobile) it
> should be possible to make use of the patch somewhat easy?

Thanks for the idea!  I've used /etc/portage/patches before for a couple
of personal enhancements.

Thanks for the link to the pertinent wiki page, Alexis.  It was useful.

The patch should pretty much work as it is in /etc/portage/patches.  I
just need to work out precisely how to say "apply to version 6.18.26
onwards" in the patch file path.  I was wondering how to specify the
option -p1 to patch (that's the option which ignores the first component
of the file paths when searching for source files to amend), but it seems
this is the default anyway.

The only problem I see is that when the kernel's console code gets
further enhanced and the patch no longer applies, it could take me some
while (possibly two or three days) to update the patch.  This would be
inconvenient (kernel builds failing) for those with the patch already in
/etc/portage/patches.

So I'll take a closer look at this.  Hopefully it will be as simple as
asking people to do

    # mv .../6.18.28-GPM-NO-MD.20260511.diff /etc/portage/patches/...

..

-- 
Alan Mackenzie (Nuremberg, Germany).