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Date:   Wed, 4 Apr 2018 14:28:16 +0100
From:   James Hogan <jhogan@kernel.org>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Pavel Machek <pavel@ucw.cz>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-arch <linux-arch@vger.kernel.org>,
        David Howells <dhowells@redhat.com>,
        "moderated list:PANASONIC MN10300..." <linux-am33-list@redhat.com>,
        Hirokazu Takata <takata@linux-m32r.org>,
        Lennox Wu <lennox.wu@gmail.com>,
        Aaron Wu <Aaron.Wu@analog.com>, Bryan Wu <cooloney@gmail.com>,
        Chris Metcalf <chris.d.metcalf@gmail.com>,
        Jesper Nilsson <jesper.nilsson@axis.com>
Subject: Re: [GIT PULL] arch: remove obsolete architecture ports
Message-ID: <20180404132815.GC25517@saruman>
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On Wed, Apr 04, 2018 at 10:38:41AM +0200, Arnd Bergmann wrote:
> Also, now that the other architectures are gone, a lot of changes can
> be done more easily that will be incompatible with a pure revert, so
> the more time passes, the harder it will get to do that.

Yes, and an out-of-tree arch port (as effectively these arches now are)
requires constant maintenance (often subtle runtime breakage) to keep up
to date with each new kernel release, which happens mostly automatically
=66rom arch maintainer POV while they're merged.

Even without changes intentionally taking advantage of not having to
care about these arches, it'll be only a few cycles at the most before a
plain revert won't "just work".

Cheers
James

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