pmem api, generic ioremap_cache, and memremap

The pmem api is responsible for shepherding data out to persistent
media.  The pmem driver uses this api, when available, to assert that
data is durable by the time bio_endio() is invoked.  When an
architecture or cpu can not make persistence guarantees the driver warns
and falls back to "best effort" implementation.

Changes since v2 [1]:

1/ Rebased on bp.git/tip-mm-2 (pat cleanups from Boris and ioremap_wt
   from Toshi).

2/ Fixes for build breakage caught by 0day.

3/ Rework IORESOURCE_CACHEABLE to allow it to be safely used in
   devm_ioremap_resource(). (Arnd)

4/ Rename pmem apis from persistent_<action> to <action>_pmem (Boaz)

5/ Introduce the __pmem annotation to let sparse check proper handling
   of a pointer to pmem.

6/ Unify the ioremap function prototype on:
       ioremap(resource_size_t offset, unsigned long size)
   ...across all archs.

7/ Limit the memremap apis to memremap_wt() and memremap_cache(), add
   ARCH_HAS_MEMREMAP to allow drivers to skip architectures where the
   return value from ioremap() is not a simple pointer to memory, and catch
   attempts to memremap addresses that are covered by the kernel's linear
   mapping. (Arnd)

---

Dan Williams (5):
      arch: unify ioremap prototypes and macro aliases
      cleanup IORESOURCE_CACHEABLE vs ioremap()
      arch/*/asm/io.h: add ioremap_cache() to all architectures
      devm: fix ioremap_cache() usage
      arch: introduce memremap_cache() and memremap_wt()

Ross Zwisler (1):
      arch, x86: pmem api for ensuring durability of persistent memory updates


 arch/arc/include/asm/io.h               |    1 
 arch/arm/Kconfig                        |    1 
 arch/arm/include/asm/io.h               |    2 +
 arch/arm/mach-clps711x/board-cdb89712.c |    2 -
 arch/arm64/Kconfig                      |    1 
 arch/arm64/include/asm/io.h             |    3 +
 arch/arm64/kernel/efi.c                 |    4 +
 arch/arm64/kernel/smp_spin_table.c      |   10 ++-
 arch/avr32/include/asm/io.h             |    1 
 arch/cris/include/asm/io.h              |    8 +-
 arch/cris/mm/ioremap.c                  |    6 +-
 arch/frv/Kconfig                        |    1 
 arch/frv/include/asm/io.h               |    6 ++
 arch/ia64/include/asm/io.h              |    9 +--
 arch/ia64/mm/ioremap.c                  |    4 +
 arch/m32r/include/asm/io.h              |    1 
 arch/m68k/Kconfig                       |    1 
 arch/m68k/include/asm/io_mm.h           |    7 ++
 arch/m68k/include/asm/io_no.h           |    5 ++
 arch/metag/Kconfig                      |    1 
 arch/metag/include/asm/io.h             |    5 ++
 arch/microblaze/include/asm/io.h        |    1 
 arch/mips/Kconfig                       |    1 
 arch/mips/include/asm/io.h              |   17 ++++-
 arch/mn10300/include/asm/io.h           |    1 
 arch/nios2/include/asm/io.h             |    1 
 arch/powerpc/Kconfig                    |    1 
 arch/powerpc/include/asm/io.h           |    2 -
 arch/powerpc/kernel/pci_of_scan.c       |    2 -
 arch/s390/include/asm/io.h              |    1 
 arch/sparc/include/asm/io_32.h          |    1 
 arch/sparc/include/asm/io_64.h          |    9 ++-
 arch/sparc/kernel/pci.c                 |    3 -
 arch/tile/include/asm/io.h              |    1 
 arch/x86/Kconfig                        |    2 +
 arch/x86/include/asm/cacheflush.h       |   36 +++++++++++
 arch/x86/include/asm/io.h               |    7 ++
 arch/x86/kernel/crash_dump_64.c         |    6 +-
 arch/x86/kernel/kdebugfs.c              |    8 +-
 arch/x86/kernel/ksysfs.c                |   28 ++++-----
 arch/x86/mm/ioremap.c                   |   12 ++--
 arch/xtensa/Kconfig                     |    1 
 arch/xtensa/include/asm/io.h            |    3 +
 drivers/acpi/apei/einj.c                |    8 +-
 drivers/acpi/apei/erst.c                |    4 +
 drivers/block/Kconfig                   |    1 
 drivers/block/pmem.c                    |   76 +++++++++++++++++++++--
 drivers/firmware/google/memconsole.c    |    4 +
 drivers/pci/probe.c                     |    3 -
 drivers/pnp/manager.c                   |    2 -
 drivers/scsi/aic94xx/aic94xx_init.c     |    7 --
 drivers/scsi/arcmsr/arcmsr_hba.c        |    5 --
 drivers/scsi/mvsas/mv_init.c            |   15 +----
 drivers/video/fbdev/ocfb.c              |    1 
 include/asm-generic/io.h                |    8 ++
 include/asm-generic/iomap.h             |    4 +
 include/linux/compiler.h                |    2 +
 include/linux/device.h                  |    5 ++
 include/linux/io.h                      |    6 ++
 include/linux/pmem.h                    |  102 +++++++++++++++++++++++++++++++
 kernel/resource.c                       |   41 ++++++++++++
 lib/Kconfig                             |    8 ++
 lib/devres.c                            |   48 ++++++---------
 lib/pci_iomap.c                         |    7 +-
 64 files changed, 441 insertions(+), 139 deletions(-)
 create mode 100644 include/linux/pmem.h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/