On Mon, Apr 5, 2021, 13:13 Alan Mackenzie <a...@muc.de> wrote: > Hello, Wol. > > On Mon, Apr 05, 2021 at 18:44:15 +0100, antlists wrote: > > On 05/04/2021 18:12, Alan Mackenzie wrote: > > > Bug reports and other comments are welcome, of course. > > > > > > If anybody would like the corresponding patch which works on 5.4.n, > for n > > >> = 80, that is available, too. > > > Why did it get removed from the kernel? > > Allegedly, there were security problems with it. I think the kernel > people had a program which fired random inputs at lots of components, > and noted when things went wrong; and things went wrong in the scroll > back component. And they couldn't find anybody to look into these > problems. > > That's the official position. I'm a bit more cynical about it. > > > If you want to get it back in, couldn't you ping Greg KH and get some > > help - or even just advice - getting it accepted? > > I have no reason to believe all the "security problems" will have been > resolved by my hacking. I took the algorithmic bits from 4.19.97 > basically unchanged. > > Maybe there's not much enthusiasm for this feature, in which case I will > keep it working for myself. Linux is basically unusable to me without > it. There are probably quite a few patches to restore the scrollback > floating around the web by now: the changes were not particularly > difficult to anybody who knows the code, but getting to know the code > was unusually difficult. > > We'll see how people react to it here, first. > > > Cheers, > > Wol > > -- > Alan Mackenzie (Nuremberg, Germany).
Without looking at the patch itself: Have you considered something like kmscon as a userland alternative? I installed it on my laptop, and aside from not working with gpmd or consolation for mouse support, it's a perfectly functional local tty.
