On Wed, 17 Aug 2022 14:21:12 +0800 Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> wrote: > The pmd_huge() is used to validate if the pmd entry is mapped by a huge > page, also including the case of non-present (migration or hwpoisoned) > pmd entry on arm64 or x86 architectures. Thus we should validate if it > is present before making the pmd entry old or getting young state, > otherwise we can not get the correct corresponding page. > What are the user-visible runtime effects of this change?
