Re: [PATCH v3 1/1] selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT_DIRTY is disabled

On Wed, 17 Sep 2025 21:31:37 +0800 Lance Yang lance.yang@linux.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?