linux-kernel - Re: [PATCH v3 1/1] selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT

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Message-ID: <5df18d21-a451-4261-8606-8faa41149028@linux.dev>
Date: Thu, 18 Sep 2025 09:41:58 +0800
From: Lance Yang <lance.yang@...ux.dev>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: david@...hat.com, lorenzo.stoakes@...cle.com, shuah@...nel.org,
 ioworker0@...il.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v3 1/1] selftests/mm: skip soft-dirty tests when
 CONFIG_MEM_SOFT_DIRTY is disabled



On 2025/9/18 06:30, Andrew Morton wrote:
> On Wed, 17 Sep 2025 21:31:37 +0800 Lance Yang <lance.yang@...ux.dev> wrote:
> 
>> The madv_populate and soft-dirty kselftests currently fail on systems where
>> CONFIG_MEM_SOFT_DIRTY is disabled.
>>
>> Introduce a new helper softdirty_supported() into vm_util.c/h to ensure
>> tests are properly skipped when the feature is not enabled.
> 
> It's pretty sad for us to ship kernels which have known selftest flaws
> like this.
> 
> would
> 
> 	Fixes: 9f3265db6ae8 ("selftests: vm: add test for Soft-Dirty PTE bit")
> 
> be appropriate?

Yes. Thanks for providing the Fixes: tag!