linux-kernel - [PATCH v5 0/8] memremap for 4.3

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Message-ID: <20150813000250.17702.28409.stgit@otcpl-skl-sds-2.jf.intel.com>
Date:	Wed, 12 Aug 2015 20:12:03 -0400
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	Toshi Kani <toshi.kani@...com>, Arnd Bergmann <arnd@...db.de>,
	linux-nvdimm@...ts.01.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	mcgrof@...e.com, hch@....de,
	Benjamin Romer <benjamin.romer@...sys.com>,
	David Kershner <david.kershner@...sys.com>,
	ross.zwisler@...ux.intel.com
Subject: [PATCH v5 0/8] memremap for 4.3

Changes since v4 [1]:

1/ Squashed the pmem memremap conversion into one patch and dropped the
   boilerplate for looking a mapping-type by range. The architecture
   now optionally defines ARCH_MEMREMAP_PMEM flags to override the
   default. (Christoph)

2/ Fixed memunmap_pmem() to be devm based to match memremap_pmem()

[1]: https://lists.01.org/pipermail/linux-nvdimm/2015-August/001728.html

---

While developing the pmem driver we noticed that the __iomem annotation
on the return value from ioremap_cache() was being mishandled by several
callers.  We also observed that all of the call sites expected to be
able to treat the return value from ioremap_cache() as normal
(non-__iomem) pointer to memory.

See also, the LWN write up: https://lwn.net/Articles/653585/

---

Christoph Hellwig (2):
      devres: add devm_memremap
      pmem: switch to devm_ allocations

Dan Williams (6):
      mm: enhance region_is_ram() to region_intersects()
      arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
      cleanup IORESOURCE_CACHEABLE vs ioremap()
      arch: introduce memremap()
      visorbus: switch from ioremap_cache to memremap
      pmem: convert to generic memremap


 arch/arm/mach-clps711x/board-cdb89712.c        |    2 
 arch/arm/mach-shmobile/pm-rcar.c               |    2 
 arch/ia64/include/asm/io.h                     |    1 
 arch/ia64/kernel/cyclone.c                     |    2 
 arch/powerpc/kernel/pci_of_scan.c              |    2 
 arch/sh/include/asm/io.h                       |    1 
 arch/sparc/kernel/pci.c                        |    3 -
 arch/x86/include/asm/io.h                      |    6 -
 arch/xtensa/include/asm/io.h                   |    1 
 drivers/isdn/icn/icn.h                         |    2 
 drivers/mtd/devices/slram.c                    |    2 
 drivers/mtd/nand/diskonchip.c                  |    2 
 drivers/mtd/onenand/generic.c                  |    2 
 drivers/nvdimm/pmem.c                          |   36 ++----
 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/scsi/sun3x_esp.c                       |    2 
 drivers/staging/comedi/drivers/ii_pci20kc.c    |    1 
 drivers/staging/unisys/visorbus/visorchannel.c |   16 ++-
 drivers/staging/unisys/visorbus/visorchipset.c |   17 ++-
 drivers/tty/serial/8250/8250_core.c            |    2 
 drivers/video/fbdev/ocfb.c                     |    1 
 drivers/video/fbdev/s1d13xxxfb.c               |    3 -
 drivers/video/fbdev/stifb.c                    |    1 
 include/linux/io-mapping.h                     |    2 
 include/linux/io.h                             |   13 ++
 include/linux/mm.h                             |    9 +-
 include/linux/mtd/map.h                        |    2 
 include/linux/pmem.h                           |   36 ++----
 include/video/vga.h                            |    2 
 kernel/Makefile                                |    2 
 kernel/memremap.c                              |  137 ++++++++++++++++++++++++
 kernel/resource.c                              |   61 ++++++-----
 lib/devres.c                                   |   13 +-
 lib/pci_iomap.c                                |    7 -
 tools/testing/nvdimm/Kbuild                    |    4 -
 tools/testing/nvdimm/test/iomap.c              |   46 ++++++--
 40 files changed, 309 insertions(+), 164 deletions(-)
 create mode 100644 kernel/memremap.c
--
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