Re: [PATCH] x86: Drop KGDB support

[Dave Hansen]

On 10/28/26 07:26, Peter Zijlstra wrote:
...
> Also, when was the last time you used KGDB? I think I've tried it once,
> some 20 years ago, and haven't bothered since -- it was *that* good 🙂

I can't remember the last time I used it. I also grepped through all of
my stashed-away kernel configs I've been using for the past 15 or so
years. The only place I even see it configured in is in distro-derived
configs. None of my trimmed down debug configs.

There seems to be approximately one clear commit that shows anyone using
the x86 kgdb.c in the last decade:

	commit 71ab8323cc357c68985a2d6fc6cfc22b1dbbc1c3
	Author: Matt Mullins <mmullins@xxxxxx>
	Date:   Fri May 31 12:47:54 2019 -0700

	    x86/kgdb: Return 0 from kgdb_arch_set_breakpoint()

The only question for me at this point would be whether we should just
config it out for a couple of releases rather than removing it outright.