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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , David Hildenbrand , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Greg Kroah-Hartman , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Paul Moore , Stephen Smalley , Jaroslav Kysela , Takashi Iwai , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Kiryl Shutsemau , Doug Gilbert , "James E.J. Bottomley" , "Martin K. 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(migrate_vma_setup() regains an explicit hugetlb test later in > the series, once VMA_SPECIAL_FLAGS is removed.) > > * hugetlb VMAs unconditionally set vma->vm_ops, so they are never > anonymous. > > * hugetlb VMAs do not set VMA_PFNMAP_BIT so checking for this is redundant. > > While we're here also drop a VM_BUG_ON() which the simplified check above > makes unreachable, and use the new VMA flag API. > > No functional change intended. > > Signed-off-by: Lorenzo Stoakes (ARM) > --- > arch/arm64/kvm/mmu.c | 4 +--- > drivers/gpu/drm/drm_gpusvm.c | 3 +-- > mm/migrate_device.c | 4 ++-- > 3 files changed, 4 insertions(+), 7 deletions(-) > > diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c > index a7968f8d24bf..3c1240ffc38d 100644 > --- a/arch/arm64/kvm/mmu.c > +++ b/arch/arm64/kvm/mmu.c > @@ -1463,14 +1463,12 @@ static int get_vma_page_shift(struct vm_area_struct *vma, unsigned long hva) > { > unsigned long pa; > > - if (vma_is_hugetlb(vma) && !(vma->vm_flags & VM_PFNMAP)) > + if (vma_is_hugetlb(vma)) > return huge_page_shift(hstate_vma(vma)); > > if (!(vma->vm_flags & VM_PFNMAP)) > return PAGE_SHIFT; > > - VM_BUG_ON(vma_is_hugetlb(vma)); > - > pa = (vma->vm_pgoff << PAGE_SHIFT) + (hva - vma->vm_start); > > #ifndef __PAGETABLE_PMD_FOLDED Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.