This series enables vmemmap backing memory allocation from device memory ranges on arm64. But before that, it enables vmemmap_populate_basepages() and vmemmap_alloc_block_buf() to accommodate struct vmem_altmap based alocation requests.
This series applies on 5.8-rc4. Changes in V4: - Dropped 'fallback' from vmemmap_alloc_block_buf() per Catalin Changes in V3: (https://patchwork.kernel.org/project/linux-mm/list/?series=304707) - Dropped comment from free_hotplug_page_range() per Robin - Modified comment in unmap_hotplug_range() per Robin - Enabled altmap support in vmemmap_alloc_block_buf() per Robin Changes in V2: (https://lkml.org/lkml/2020/3/4/475) - Rebased on latest hot-remove series (v14) adding P4D page table support Changes in V1: (https://lkml.org/lkml/2020/1/23/12) - Added an WARN_ON() in unmap_hotplug_range() when altmap is provided without the page table backing memory being freed Changes in RFC V2: (https://lkml.org/lkml/2019/10/21/11) - 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 <catalin.mari...@arm.com> Cc: Will Deacon <w...@kernel.org> Cc: Mark Rutland <mark.rutl...@arm.com> Cc: Paul Walmsley <paul.walms...@sifive.com> Cc: Palmer Dabbelt <pal...@dabbelt.com> Cc: Tony Luck <tony.l...@intel.com> Cc: Fenghua Yu <fenghua...@intel.com> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: Andy Lutomirski <l...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@redhat.com> Cc: David Hildenbrand <da...@redhat.com> Cc: Mike Rapoport <r...@linux.ibm.com> Cc: Michal Hocko <mho...@suse.com> Cc: "Matthew Wilcox (Oracle)" <wi...@infradead.org> Cc: "Kirill A. Shutemov" <kirill.shute...@linux.intel.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Dan Williams <dan.j.willi...@intel.com> Cc: Pavel Tatashin <pasha.tatas...@soleen.com> Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: linux-arm-ker...@lists.infradead.org Cc: linux-i...@vger.kernel.org Cc: linux-ri...@lists.infradead.org Cc: x...@kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Anshuman Khandual (3): mm/sparsemem: Enable vmem_altmap support in vmemmap_populate_basepages() mm/sparsemem: Enable vmem_altmap support in vmemmap_alloc_block_buf() arm64/mm: Enable vmem_altmap support for vmemmap mappings Documentation/vm/memory-model.rst | 2 +- arch/arm64/mm/mmu.c | 58 ++++++++++++++++++++----------- arch/ia64/mm/discontig.c | 2 +- arch/powerpc/mm/init_64.c | 4 +-- arch/riscv/mm/init.c | 2 +- arch/x86/mm/init_64.c | 11 +++--- include/linux/mm.h | 9 ++--- mm/sparse-vmemmap.c | 36 ++++++++++--------- 8 files changed, 72 insertions(+), 52 deletions(-) -- 2.20.1
