linux-kernel - Re: [PATCH v2] arm64: defconfig: Enable zram, xfs and loading compressed FW support

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Date: Wed, 21 Feb 2024 15:48:33 +0100
From: Maxime Ripard <mripard@...hat.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Javier Martinez Canillas <javierm@...hat.com>, 
	linux-kernel@...r.kernel.org, Enric Balletbo i Serra <eballetbo@...hat.com>, 
	Erico Nunes <nunes.erico@...il.com>, Brian Masney <bmasney@...hat.com>, Arnd Bergmann <arnd@...db.de>, 
	Bjorn Andersson <quic_bjorande@...cinc.com>, Catalin Marinas <catalin.marinas@....com>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Marek Szyprowski <m.szyprowski@...sung.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Will Deacon <will@...nel.org>, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] arm64: defconfig: Enable zram, xfs and loading
 compressed FW support

On Wed, Feb 21, 2024 at 03:22:38PM +0100, Krzysztof Kozlowski wrote:
> On 21/02/2024 15:13, Javier Martinez Canillas wrote:
> > These options are needed by some Linux distributions (e.g: Fedora), so
> 
> How ZRAM is needed? Why Fedora cannot boot without it? Debian, which I
> use on my arm64 boards, does not have any problem.

Is it relevant in any way?

I'm sure Debian can boot without MEMORY_HOTREMOVE, or BRIDGE, or
NUMA_BALANCING, or BPF_JIT, or NFS_FS, yet all of them are enabled. Let
me know if you want hundreds more examples.

> I kind of repeat comments from similar patch earlier:
> https://lore.kernel.org/all/fe1e74a2-e933-7cd9-f740-86d871076191@linaro.org/
> 
> About XFS: I don't think it is needed to boot anything.

Just like 9P_FS, NFS or UBIFS.

> This is a defconfig, not a distro config. Please don't make it distro.
> 
> I will gladly support things needed by systemd or equivalent, but not
> unusual filesystems needed by distro.

It's a defconfig. It's whatever people want it to be. Or we need to come
up with a clearly defined set of rules of what is acceptable in that
defconfig or not, and prune every option that isn't.

Maxime

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