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

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Message-ID: <f1cb6029-9140-3784-5b44-ff58b4edde2c@huawei.com>
Date: Wed, 21 Jan 2026 10:05:07 +0800
From: Miaohe Lin <linmiaohe@...wei.com>
To: Mark Brown <broonie@...nel.org>
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 2026/1/21 1:46, Mark Brown wrote:
> 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

Currently if HWPOISION_INJECT or MEMORY_FAILURE isn't enabled, the test
will be skipped.

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

Sounds reasonable. Will add it in next version.

Thanks.
.