linux-kernel - Re: [PATCH v2 1/3] selftests/mm: add memory failure anonymous page test

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Message-ID: <737310eb-05e5-4234-af67-9118b3f395ab@sirena.org.uk>
Date: Tue, 20 Jan 2026 17:46:20 +0000
From: Mark Brown <broonie@...nel.org>
To: Miaohe Lin <linmiaohe@...wei.com>
Cc: akpm@...ux-foundation.org, shuah@...nel.org, david@...nel.org,
	lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, vbabka@...e.cz,
	rppt@...nel.org, surenb@...gle.com, mhocko@...e.com,
	nao.horiguchi@...il.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v2 1/3] selftests/mm: add memory failure anonymous page
 test

On Tue, Jan 20, 2026 at 08:32:37PM +0800, Miaohe Lin wrote:

> +# Try to load hwpoison_inject if not present.
> +HWPOISON_DIR=/sys/kernel/debug/hwpoison/
> +if [ ! -d "$HWPOISON_DIR" ]; then
> +	if ! modprobe -q -R hwpoison_inject; then
> +		echo "Module hwpoison_inject not found, skipping..."
> +	else
> +		modprobe hwpoison_inject > /dev/null 2>&1
> +		LOADED_MOD=1
> +	fi
> +fi

You should also add HWPOISION_INJECT and likely also MEMORY_FAILURE
(which it depends on) to the config fragment in

   tools/testing/selftests/mm/config

so people and tools know the config options are needed to get all the
tests running.

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