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Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , Paolo Bonzini , Dan Williams Subject: Re: [PATCH v1 0/4] mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c Message-ID: References: <20260306101600.57355-1-david@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260306101600.57355-1-david@kernel.org> On Fri, Mar 06, 2026 at 11:15:56AM +0100, David Hildenbrand (Arm) wrote: > Looking into vma_(kernel|mmu)_pagesize(), I realized that there is one > scenario where DAX would not do the right thing when the kernel is > not compiled with hugetlb support. > > Without hugetlb support, vma_(kernel|mmu)_pagesize() will always return > PAGE_SIZE instead of using the ->pagesize() result provided by dax-device > code. > > Fix that by moving vma_kernel_pagesize() to core MM code, where it belongs. > I don't think this is stable material, but am not 100% sure. > > Also, move vma_mmu_pagesize() while at it. Remove the unnecessary hugetlb.h > inclusion from KVM code. > > Cross-compiled heavily. > > Cc: Andrew Morton > Cc: Madhavan Srinivasan > Cc: Nicholas Piggin > Cc: Michael Ellerman > Cc: "Christophe Leroy (CS GROUP)" > Cc: Muchun Song > Cc: Oscar Salvador > Cc: Lorenzo Stoakes > Cc: "Liam R. Howlett" > Cc: Vlastimil Babka > Cc: Mike Rapoport > Cc: Suren Baghdasaryan > Cc: Michal Hocko > Cc: Jann Horn > Cc: Pedro Falcato > Cc: Paolo Bonzini > Cc: Dan Williams > > David Hildenbrand (Arm) (4): > mm: move vma_kernel_pagesize() from hugetlb to mm.h > mm: move vma_mmu_pagesize() from hugetlb to vma.c > KVM: remove hugetlb.h inclusion > KVM: PPC: remove hugetlb.h inclusion > > arch/powerpc/kvm/book3s_hv.c | 1 - > include/linux/hugetlb.h | 14 -------------- > include/linux/mm.h | 22 ++++++++++++++++++++++ > mm/hugetlb.c | 28 ---------------------------- > mm/vma.c | 21 +++++++++++++++++++++ > virt/kvm/kvm_main.c | 1 - > 6 files changed, 43 insertions(+), 44 deletions(-) For the series: Acked-by: Mike Rapoport (Microsoft) > base-commit: f75825cdfc4c5477cffcfd2cafa4e5ce5aa67f13 > -- > 2.43.0 > -- Sincerely yours, Mike.