Hello Oscar, On 06/25/2019 01:22 PM, Oscar Salvador wrote: > diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c > index 93ed0df4df79..d4b5661fa6b6 100644 > --- a/arch/arm64/mm/mmu.c > +++ b/arch/arm64/mm/mmu.c > @@ -765,7 +765,10 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, > if (pmd_none(READ_ONCE(*pmdp))) { > void *p = NULL; > > - p = vmemmap_alloc_block_buf(PMD_SIZE, node); > + if (altmap) > + p = altmap_alloc_block_buf(PMD_SIZE, altmap); > + else > + p = vmemmap_alloc_block_buf(PMD_SIZE, node); > if (!p) > return -ENOMEM; Is this really required to be part of this series ? I have an ongoing work (reworked https://patchwork.kernel.org/patch/10882781/) enabling altmap support on arm64 during memory hot add and remove path which is waiting on arm64 memory-hot remove to be merged first. - Anshuman