linux-kernel - Re: [RFC} arm architecture board/feature deprecation timeline

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Message-ID: <CAEwRq=qNqbXRPCqd-ukW9q1uNNJL9x42dBk0pHMEB_VCoV4W2w@mail.gmail.com>
Date: Sun, 1 Sep 2024 16:34:09 +0000
From: Vincent Legoll <vincent.legoll@...il.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: Linus Walleij <linus.walleij@...aro.org>, Aaro Koskinen <aaro.koskinen@....fi>, 
	Alexandre Torgue <alexandre.torgue@...s.st.com>, Andrew Lunn <andrew@...n.ch>, 
	Mark Brown <broonie@...nel.org>, Dmitry Torokhov <dmitry.torokhov@...il.com>, 
	Gregory Clement <gregory.clement@...tlin.com>, "Jeremy J. Peper" <jeremy@...emypeper.com>, 
	Janusz Krzysztofik <jmkrzyszt@...il.com>, Kristoffer Ericson <kristoffer.ericson@...il.com>, 
	Krzysztof Kozlowski <krzk@...nel.org>, Linux Kernel ML <linux-kernel@...r.kernel.org>, 
	Russell King <linux@...linux.org.uk>, Nicolas Pitre <nico@...xnic.net>, 
	Nikita Shubin <nikita.shubin@...uefel.me>, Ramana Radhakrishnan <ramanara@...dia.com>, 
	Richard Earnshaw <richard.earnshaw@....com>, Richard Sandiford <richard.sandiford@....com>, 
	Robert Jarzmik <robert.jarzmik@...e.fr>, 
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>, Tony Lindgren <tony@...mide.com>, 
	linux-mips@...r.kernel.org
Subject: Re: [RFC} arm architecture board/feature deprecation timeline

Hello Arnd,

On Mon, Aug 26, 2024 at 2:55 PM Arnd Bergmann <arnd@...db.de> wrote:
> What you see is certainly unrelated to me mentioning that we may remove
> highmem support from the kernel altogether in the future, but it's
> possible that OpenWRT turned it off because things work better
> without it.
>
> https://github.com/openwrt/openwrt/issues/13151 may explain
> what ios going on here.

Thanks a lot for that hint, indeed there is a solution, which does not rely
on `CONFIG_HIGHMEM=y`, linked from this issue.

Just setting `HIGHMEM_START` made space available for that 64MB
RAM chunk.

Thanks

-- 
Vincent Legoll