• Linus Torvalds's avatar
    Merge tag 'libnvdimm-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 9b06860d
    Linus Torvalds authored
    Pull libnvdimm and dax updates from Dan Williams:
     "There were multiple touches outside of drivers/nvdimm/ this round to
      add cross arch compatibility to the devm_memremap_pages() interface,
      enhance numa information for persistent memory ranges, and add a
      zero_page_range() dax operation.
      This cycle I switched from the patchwork api to Konstantin's b4 script
      for collecting tags (from x86, PowerPC, filesystem, and device-mapper
      folks), and everything looks to have gone ok there. This has all
      appeared in -next with no reported issues.
       - Add support for region alignment configuration and enforcement to
         fix compatibility across architectures and PowerPC page size
       - Introduce 'zero_page_range' as a dax operation. This facilitates
         filesystem-dax operation without a block-device.
       - Introduce phys_to_target_node() to facilitate drivers that want to
         know resulting numa node if a given reserved address range was
       - Advertise a persistence-domain for of_pmem and papr_scm. The
         persistence domain indicates where cpu-store cycles need to reach
         in the platform-memory subsystem before the platform will consider
         them power-fail protected.
       - Promote numa_map_to_online_node() to a cross-kernel generic
       - Save x86 numa information to allow for node-id lookups for reserved
         memory ranges, deploy that capability for the e820-pmem driver.
       - Pick up some miscellaneous minor fixes, that missed v5.6-final,
         including a some smatch reports in the ioctl path and some unit
         test compilation fixups.
       - Fixup some flexible-array declarations"
    * tag 'libnvdimm-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (29 commits)
      dax: Move mandatory ->zero_page_range() check in alloc_dax()
      dax,iomap: Add helper dax_iomap_zero() to zero a range
      dax: Use new dax zero page method for zeroing a page
      dm,dax: Add dax zero_page_range operation
      s390,dcssblk,dax: Add dax zero_page_range operation to dcssblk driver
      dax, pmem: Add a dax operation zero_page_range
      pmem: Add functions for reading/writing page to/from pmem
      libnvdimm: Update persistence domain value for of_pmem and papr_scm device
      tools/test/nvdimm: Fix out of tree build
      libnvdimm/region: Fix build error
      libnvdimm/region: Replace zero-length array with flexible-array member
      libnvdimm/label: Replace zero-length array with flexible-array member
      ACPI: NFIT: Replace zero-length array with flexible-array member
      libnvdimm/region: Introduce an 'align' attribute
      libnvdimm/region: Introduce NDD_LABELING
      libnvdimm/namespace: Enforce memremap_compat_align()
      libnvdimm/pfn: Prevent raw mode fallback if pfn-infoblock valid
      libnvdimm: Out of bounds read in __nd_ioctl()
      acpi/nfit: improve bounds checking for 'func'
      mm/memremap_pages: Introduce memremap_compat_align()