This series fixes pfn_valid() for ZONE_DEVICE based memory and also improves
its performance for normal hotplug memory. While here, it also reorganizes
pfn_valid() on CONFIG_SPARSEMEM. This series is based on v5.11-rc6.
Question - should pfn_section_valid() be tested both for boot and non boot
memory as well ?
Cc: Catalin Marinas <catalin.mari...@arm.com>
Cc: Will Deacon <w...@kernel.org>
Cc: Ard Biesheuvel <a...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: James Morse <james.mo...@arm.com>
Cc: Robin Murphy <robin.mur...@arm.com>
Cc: Jérôme Glisse <jgli...@redhat.com>
Cc: Dan Williams <dan.j.willi...@intel.com>
Cc: David Hildenbrand <da...@redhat.com>
Cc: Mike Rapoport <r...@linux.ibm.com>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux...@kvack.org
Cc: linux-kernel@vger.kernel.org
Changes in V2:
- Dropped pfn_valid() bifurcation based on CONFIG_SPARSEMEM
- Used PFN_PHYS() and PHYS_PFN() instead of __pfn_to_phys() and __phys_to_pfn()
- Moved __pfn_to_section() inside #ifdef CONFIG_SPARSEMEM with a { } construct
Changes in V1:
https://lore.kernel.org/linux-mm/1611905986-20155-1-git-send-email-anshuman.khand...@arm.com/
- Test pfn_section_valid() for non boot memory
Changes in RFC:
https://lore.kernel.org/linux-arm-kernel/1608621144-4001-1-git-send-email-anshuman.khand...@arm.com/
Anshuman Khandual (2):
arm64/mm: Fix pfn_valid() for ZONE_DEVICE based memory
arm64/mm: Reorganize pfn_valid()
arch/arm64/mm/init.c | 28 +++++++++++++++++++++++++---
1 file changed, 25 insertions(+), 3 deletions(-)
--
2.20.1
