From: Dan Williams <dan.j.williams@intel.com>
To: tglx@linutronix.de, mingo@kernel.org, hpa@zytor.com
Cc: linux-fbdev@vger.kernel.org, David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org,
kbuild test robot <fengguang.wu@intel.com>,
Lv Zheng <lv.zheng@intel.com>,
Daniel Vetter <daniel.vetter@intel.com>,
Benjamin Romer <benjamin.romer@unisys.com>,
hch@lst.de, linux-arch@vger.kernel.org, linux-nvdimm@ml01.01.org,
Joerg Roedel <joro@8bytes.org>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Bob Moore <robert.moore@intel.com>,
Mike Waychison <mikew@google.com>,
Roland Dreier <roland@purestorage.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
rmk+kernel@arm.linux.org.uk,
Ross Zwisler <ross.zwisler@linux.intel.com>,
David Kershner <david.kershner@unisys.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
intel-gfx@lists.freedesktop.org, Len Brown <lenb@kernel.org>,
Joerg Roedel <jroedel@suse.de>, Arnd Bergmann <arnd@arndb.de>,
"Luis R. Rodriguez" <mcgrof@suse.com>,
Jani Nikula <jani.nikula@linux.intel.com>,
Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
linux-arm-kernel@lists.infradead.org,
Tony Luck <tony.luck@intel.com>,
toshi.kani@hp.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Buzzard <jonathan@buzzard.org.uk>,
linux-kernel@vger.kernel.org, Mike Travis <travis@sgi.com>,
Andrew Morton <akpm@linux-foundation.org>,
Brian Norris <computersforpeace@gmail.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: [PATCH v2 00/25] replace ioremap_{cache|wt} with memremap
Date: Fri, 24 Jul 2015 22:37:54 -0400 [thread overview]
Message-ID: <20150725023649.8664.59145.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
Changes since v1 [1]:
1/ Drop the attempt at unifying ioremap() prototypes, just focus on
converting ioremap_cache and ioremap_wt over to memremap (Christoph)
2/ Drop the unrelated cleanups to use %pa in __ioremap_caller (Thomas)
3/ Add support for memremap() attempts on "System RAM" to simply return
the kernel virtual address for that range. ARM depends on this
functionality in ioremap_cache() and ACPI was open coding a similar
solution. (Mark)
4/ Split the conversions of ioremap_{cache|wt} into separate patches per
driver / arch.
5/ Fix bisection breakage and other reports from 0day-kbuild
---
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.
This patchset takes the opportunity to clean up the above confusion as
well as a few issues with the ioremap_{cache|wt} interface, including:
1/ Eliminating the possibility of function prototypes differing between
architectures by defining a central memremap() prototype that takes
flags to determine the mapping type.
2/ Returning NULL rather than falling back silently to a different
mapping-type. This allows drivers to be stricter about the
mapping-type fallbacks that are permissible.
[1]: http://marc.info/?l=linux-arm-kernel&m=143735199029255&w=2
---
Dan Williams (22):
mm: enhance region_is_ram() to distinguish 'unknown' vs 'mixed'
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
cleanup IORESOURCE_CACHEABLE vs ioremap()
intel_iommu: fix leaked ioremap mapping
arch: introduce memremap()
arm: switch from ioremap_cache to memremap
x86: switch from ioremap_cache to memremap
gma500: switch from acpi_os_ioremap to ioremap
i915: switch from acpi_os_ioremap to ioremap
acpi: switch from ioremap_cache to memremap
toshiba laptop: replace ioremap_cache with ioremap
memconsole: fix __iomem mishandling, switch to memremap
visorbus: switch from ioremap_cache to memremap
intel-iommu: switch from ioremap_cache to memremap
libnvdimm, pmem: switch from ioremap_cache to memremap
pxa2xx-flash: switch from ioremap_cache to memremap
sfi: switch from ioremap_cache to memremap
fbdev: switch from ioremap_wt to memremap
pmem: switch from ioremap_wt to memremap
arch: remove ioremap_cache, replace with arch_memremap
arch: remove ioremap_wt, replace with arch_memremap
pmem: convert to generic memremap
Toshi Kani (3):
mm, x86: Fix warning in ioremap RAM check
mm, x86: Remove region_is_ram() call from ioremap
mm: Fix bugs in region_is_ram()
arch/arc/include/asm/io.h | 1
arch/arm/Kconfig | 1
arch/arm/include/asm/io.h | 13 +++-
arch/arm/include/asm/xen/page.h | 4 +
arch/arm/mach-clps711x/board-cdb89712.c | 2 -
arch/arm/mach-shmobile/pm-rcar.c | 2 -
arch/arm/mm/ioremap.c | 12 +++-
arch/arm/mm/nommu.c | 11 ++-
arch/arm64/Kconfig | 1
arch/arm64/include/asm/acpi.h | 10 +--
arch/arm64/include/asm/dmi.h | 8 +--
arch/arm64/include/asm/io.h | 8 ++-
arch/arm64/kernel/efi.c | 9 ++-
arch/arm64/kernel/smp_spin_table.c | 19 +++---
arch/arm64/mm/ioremap.c | 20 ++----
arch/avr32/include/asm/io.h | 1
arch/frv/Kconfig | 1
arch/frv/include/asm/io.h | 17 ++---
arch/frv/mm/kmap.c | 6 ++
arch/ia64/Kconfig | 1
arch/ia64/include/asm/io.h | 11 +++
arch/ia64/kernel/cyclone.c | 2 -
arch/m32r/include/asm/io.h | 1
arch/m68k/Kconfig | 1
arch/m68k/include/asm/io_mm.h | 14 +---
arch/m68k/include/asm/io_no.h | 12 ++--
arch/m68k/include/asm/raw_io.h | 4 +
arch/m68k/mm/kmap.c | 17 +++++
arch/m68k/mm/sun3kmap.c | 6 ++
arch/metag/include/asm/io.h | 3 -
arch/microblaze/include/asm/io.h | 1
arch/mn10300/include/asm/io.h | 1
arch/nios2/include/asm/io.h | 1
arch/powerpc/kernel/pci_of_scan.c | 2 -
arch/s390/include/asm/io.h | 1
arch/sh/Kconfig | 1
arch/sh/include/asm/io.h | 20 ++++--
arch/sh/mm/ioremap.c | 10 +++
arch/sparc/include/asm/io_32.h | 1
arch/sparc/include/asm/io_64.h | 1
arch/sparc/kernel/pci.c | 3 -
arch/tile/include/asm/io.h | 1
arch/x86/Kconfig | 1
arch/x86/include/asm/efi.h | 3 +
arch/x86/include/asm/io.h | 17 +++--
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 | 76 ++++++++++--------------
arch/xtensa/Kconfig | 1
arch/xtensa/include/asm/io.h | 9 ++-
drivers/acpi/apei/einj.c | 9 ++-
drivers/acpi/apei/erst.c | 6 +-
drivers/acpi/nvs.c | 6 +-
drivers/acpi/osl.c | 70 ++++++----------------
drivers/char/toshiba.c | 2 -
drivers/firmware/google/memconsole.c | 7 +-
drivers/gpu/drm/gma500/opregion.c | 2 -
drivers/gpu/drm/i915/intel_opregion.c | 2 -
drivers/iommu/intel-iommu.c | 10 ++-
drivers/iommu/intel_irq_remapping.c | 4 +
drivers/isdn/icn/icn.h | 2 -
drivers/mtd/devices/slram.c | 2 -
drivers/mtd/maps/pxa2xx-flash.c | 4 +
drivers/mtd/nand/diskonchip.c | 2 -
drivers/mtd/onenand/generic.c | 2 -
drivers/nvdimm/Kconfig | 2 -
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/sfi/sfi_core.c | 4 +
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/Kconfig | 2 -
drivers/video/fbdev/amifb.c | 5 +-
drivers/video/fbdev/atafb.c | 5 +-
drivers/video/fbdev/hpfb.c | 6 +-
drivers/video/fbdev/ocfb.c | 1
drivers/video/fbdev/s1d13xxxfb.c | 3 -
drivers/video/fbdev/stifb.c | 1
include/acpi/acpi_io.h | 6 +-
include/asm-generic/io.h | 8 ---
include/asm-generic/iomap.h | 4 -
include/linux/io-mapping.h | 2 -
include/linux/io.h | 9 +++
include/linux/mtd/map.h | 2 -
include/linux/pmem.h | 26 +++++---
include/video/vga.h | 2 -
kernel/Makefile | 2 +
kernel/memremap.c | 74 +++++++++++++++++++++++
kernel/resource.c | 43 +++++++-------
lib/Kconfig | 5 +-
lib/devres.c | 13 +---
lib/pci_iomap.c | 7 +-
tools/testing/nvdimm/Kbuild | 4 +
tools/testing/nvdimm/test/iomap.c | 34 ++++++++---
101 files changed, 482 insertions(+), 398 deletions(-)
create mode 100644 kernel/memremap.c
next reply other threads:[~2015-07-25 2:43 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-25 2:37 Dan Williams [this message]
2015-07-25 2:38 ` [PATCH v2 01/25] mm, x86: Fix warning in ioremap RAM check Dan Williams
2015-07-25 2:38 ` [PATCH v2 02/25] mm, x86: Remove region_is_ram() call from ioremap Dan Williams
2015-07-25 2:38 ` [PATCH v2 03/25] mm: Fix bugs in region_is_ram() Dan Williams
2015-07-25 2:38 ` [PATCH v2 04/25] mm: enhance region_is_ram() to distinguish 'unknown' vs 'mixed' Dan Williams
2015-07-27 22:50 ` Luis R. Rodriguez
2015-07-28 21:33 ` Toshi Kani
2015-07-25 2:38 ` [PATCH v2 05/25] arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead Dan Williams
2015-07-25 2:38 ` [PATCH v2 06/25] cleanup IORESOURCE_CACHEABLE vs ioremap() Dan Williams
2015-07-25 2:38 ` [PATCH v2 07/25] intel_iommu: fix leaked ioremap mapping Dan Williams
2015-07-25 2:38 ` [PATCH v2 08/25] arch: introduce memremap() Dan Williams
2015-07-26 17:25 ` Christoph Hellwig
2015-07-26 17:49 ` Dan Williams
2015-07-27 5:12 ` Christoph Hellwig
2015-07-27 5:12 ` Christoph Hellwig
2015-07-27 23:26 ` Dan Williams
2015-07-29 6:50 ` Christoph Hellwig
2015-07-29 18:27 ` Luis R. Rodriguez
2015-07-29 18:33 ` Dan Williams
2015-07-29 21:00 ` Toshi Kani
2015-07-29 21:11 ` Toshi Kani
2015-07-29 21:43 ` Luis R. Rodriguez
2015-07-29 21:47 ` Dan Williams
2015-07-29 21:52 ` Luis R. Rodriguez
2015-07-30 0:00 ` Toshi Kani
2015-08-11 21:30 ` Luis R. Rodriguez
2015-08-11 22:40 ` Toshi Kani
2015-08-11 22:52 ` Luis R. Rodriguez
2015-08-11 23:13 ` Dan Williams
2016-04-21 12:47 ` Luis R. Rodriguez
2015-07-27 23:17 ` Luis R. Rodriguez
2015-07-27 23:31 ` Dan Williams
2015-07-27 23:43 ` Luis R. Rodriguez
2015-07-28 0:32 ` Dan Williams
2015-07-25 2:38 ` [PATCH v2 09/25] arm: switch from ioremap_cache to memremap Dan Williams
2015-07-25 2:38 ` [PATCH v2 10/25] x86: " Dan Williams
2015-07-25 2:38 ` [PATCH v2 11/25] gma500: switch from acpi_os_ioremap to ioremap Dan Williams
2015-07-25 2:39 ` [PATCH v2 12/25] i915: " Dan Williams
2015-07-27 7:50 ` [Intel-gfx] " Daniel Vetter
2015-07-25 2:39 ` [PATCH v2 13/25] acpi: switch from ioremap_cache to memremap Dan Williams
2015-07-25 23:55 ` Rafael J. Wysocki
2015-07-25 2:39 ` [PATCH v2 14/25] toshiba laptop: replace ioremap_cache with ioremap Dan Williams
2015-07-25 2:39 ` [PATCH v2 15/25] memconsole: fix __iomem mishandling, switch to memremap Dan Williams
2015-07-25 22:02 ` Sergei Shtylyov
2015-07-25 2:39 ` [PATCH v2 16/25] visorbus: switch from ioremap_cache " Dan Williams
2015-07-25 2:39 ` [PATCH v2 17/25] intel-iommu: " Dan Williams
2015-08-03 14:27 ` Joerg Roedel
2015-07-25 2:39 ` [PATCH v2 18/25] libnvdimm, pmem: " Dan Williams
2015-07-28 22:51 ` Ross Zwisler
2015-07-28 23:06 ` Dan Williams
2015-07-25 2:39 ` [PATCH v2 19/25] pxa2xx-flash: " Dan Williams
2015-10-02 17:51 ` Brian Norris
2015-10-09 21:33 ` Dan Williams
2015-07-25 2:39 ` [PATCH v2 20/25] sfi: " Dan Williams
2015-07-25 2:39 ` [PATCH v2 21/25] fbdev: switch from ioremap_wt " Dan Williams
2015-07-25 2:40 ` [PATCH v2 22/25] pmem: " Dan Williams
2015-07-29 19:12 ` Ross Zwisler
2015-07-25 2:40 ` [PATCH v2 23/25] arch: remove ioremap_cache, replace with arch_memremap Dan Williams
2015-07-26 17:31 ` Christoph Hellwig
2015-07-25 2:40 ` [PATCH v2 24/25] arch: remove ioremap_wt, " Dan Williams
2015-07-26 17:31 ` Christoph Hellwig
2015-07-27 8:03 ` Christoph Hellwig
2015-07-29 22:21 ` Dan Williams
2015-07-25 2:40 ` [PATCH v2 25/25] pmem: convert to generic memremap Dan Williams
2015-07-26 17:33 ` Christoph Hellwig
2015-07-26 18:11 ` Dan Williams
2015-07-27 5:14 ` Christoph Hellwig
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