This series enables vmemmap backing memory allocation from device memory ranges on arm64. But before that, it enables vmemmap_populate_basepages() to accommodate struct vmem_altmap based requests.
This applies alongside arm64 memory hot remove (v10) on next-20191018. https://lkml.org/lkml/2019/10/11/232 Changes in RFC V2: - Changed the commit message on 1/2 patch per Will - Changed the commit message on 2/2 patch as well - Rebased on arm64 memory hot remove series (v10) RFC V1: (https://lkml.org/lkml/2019/6/28/32) Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Tony Luck <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Michal Hocko <[email protected]> Cc: "Matthew Wilcox (Oracle)" <[email protected]> Cc: "Kirill A. Shutemov" <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Dan Williams <[email protected]> Cc: Pavel Tatashin <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Anshuman Khandual (2): mm/sparsemem: Enable vmem_altmap support in vmemmap_populate_basepages() arm64/mm: Enable vmem_altmap support for vmemmap mappings arch/arm64/mm/mmu.c | 58 +++++++++++++++++++++++++++------------- arch/ia64/mm/discontig.c | 2 +- arch/riscv/mm/init.c | 2 +- arch/x86/mm/init_64.c | 6 ++--- include/linux/mm.h | 5 ++-- mm/sparse-vmemmap.c | 16 +++++++---- 6 files changed, 59 insertions(+), 30 deletions(-) -- 2.20.1
