[PATCH 0/9] (mostly) x86 kernel configuration adjustments

[Stefan Lippers-Hollmann]

On 2023-04-26, Elliott Mitchell wrote:
[...]
> 
> Looks like little of ISA remained on "64", yet some DMA support remained
> due to the generic configuration.  Remove the ISA and ISA DMA support
> from the top-level configuration.  Geode and Legacy though almost
> certainly still need ISA support.

You might find that while ISA went away as an addon slot quite quickly,
it still survived rather long for low performance onboard devices (e.g. 
sensors).

> In case someone doesn't know, "AGP" is short for "Accelerated Graphics
> Port".  This was an interim standard when graphics cards in the late
> 1990s were overwhelming PCI, but PCI-Express wasn't yet available.  Since
> OpenWRT is a router distribution, this doesn't seem like a good fit.  If
> you've got such an Intel board, this will reduce graphics performance,
> but will release ~.5MB extra memory for better uses.

While *I personally* wouldn't consider systems of this vintage for 24/7
operations (power consumption alone), AGP has been in use for quite a 
while longer than that (mid 2000s). I do still have (fully functional) 
Pentium 4 and AMD64 systems with AGP graphics.

I have responded to DRM and x86_x32 individually, but while I understand 
these proposals from a virtualization-only point of view, they are not
very useful on real x86/ x86_64 hardware - up to the point of being 
actively harmful in breaking support for existing hardware.
(It's pointless to enable x32, unless you can demonstrate that OpenWrt's
buildsystem can successfully build for it, with a 32 bit userland and
64 bit kernels).

Regards
	Stefan Lippers-Hollmann
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