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Commit Graph

36810 Commits

Author SHA1 Message Date
Dinh Nguyen
efb4a44e24 ARM: dts: socfpga: Add a 3.3V fixed regulator node
Without the 3.3V regulator node, the SDMMC driver will give these warnings:

dw_mmc ff704000.dwmmc0: No vmmc regulator found
dw_mmc ff704000.dwmmc0: No vqmmc regulator found

This patch adds the regulator node, and points the SD/MMC to the regulator.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
---
v3: Rename nodes to have schematic-name_regulator and remove "boot-on" and
    "always-on"
v2: Move the regulator nodes to their respective board dts file and
    correctly rename them to match the schematic
2014-10-22 21:00:19 -05:00
Dinh Nguyen
23920c0552 ARM: dts: socfpga: Fix SD card detect
Without this patch, the booting the SOCFPGA platform would hang at the
SDMMC driver loading. The issue, debugged by Doug Anderson, turned out
to be that the GPIO bank used by the SD card-detect was not set to
status="okay".

Also update the cd-gpios to point to portb of the &gpio1 GPIO IP.

Suggested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
---
v4: Use &gpio1 to set status="okay" and update cd-gpio=&portb
v3: Correctly degugged the issue to be a gpio node not having status="okay"
2014-10-22 20:59:45 -05:00
Dinh Nguyen
d11ac1d2d5 ARM: dts: socfpga: rename gpio nodes
Since the Synopsys GPIO IP can support multiple ports of varying widths, it
would make more sense to have the GPIO node DTS entry as this:

gpio0: gpio@ff708000{
	porta{
	};
};

Also, this is documented in the snps-dwapb-gpio.txt.

Suggested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2014-10-22 20:59:07 -05:00
Dinh Nguyen
3a4356c0c0 arm: socfpga: fix fetching cpu1start_addr for SMP
When CPU1 is brought out of reset, it's MMU is not turned on yet, so it will
only be able to use physical addresses. For systems with that have the
MMU page configured for 0xC0000000, 0x80000000, or 0x40000000
"BIC 0x40000000" will work just fine, as it was just converting the
virtual address of &cpu1start_addr into a physical address, ie. 0xC0000000
became 0x80000000. So for systems where the SDRAM controller was able to do a
wrap-around access, this was working fine, as it was just dropping the MSB,
but for systems where out of bounds memory access is not allowed, this would
not allow CPU1 to correctly fetch &cpu1start_addr.

This patch fixes the secondary_trampoline code to correctly fetch the
physical address of cpu1start_addr directly. The patch will subtract the
correct PAGE_OFFSET from &cpu1start_addr. And since on this platform, the
physical memory will always start at 0x0, subtracting PAGE_OFFSET from
&cpu1start_addr will allow CPU1 to correctly fetch the value of cpu1start_addr.

While at it, change the name of cpu1start_addr to socfpga_cpu1start_addr
to avoid any future naming collisions for multiplatform image.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
---
v4: Updated commit log to correctly lay out the usage of PAGE_OFFSET and
    add comments to the same effect.
v3: Used PAGE_OFFSET to get the physical address
v2: Correctly get the physical address instead of just a BIC hack.
2014-10-21 14:04:14 -05:00
Linus Torvalds
4d3639ac3c ARM: SoC fixes for -rc1
A batch of fixes that have come in during the merge window.
 
 Some of them are defconfig updates for things that have now landed,
 some errata additions and a few general scattered fixes.
 
 There's also a qcom DT update that adds support for SATA on AP148,
 and basic support for Sony Xperia Z1 and CM-QS600 platforms that seemed
 isolated enough that we could merge it even if it's late.
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Merge tag 'arm-soc-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A batch of fixes that have come in during the merge window.

  Some of them are defconfig updates for things that have now landed,
  some errata additions and a few general scattered fixes.

  There's also a qcom DT update that adds support for SATA on AP148, and
  basic support for Sony Xperia Z1 and CM-QS600 platforms that seemed
  isolated enough that we could merge it even if it's late"

* tag 'arm-soc-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  MAINTAINERS: corrected bcm2835 search
  ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa
  ARM: dts: Explicitly set dr_mode on exynos Peach boards
  ARM: dts: qcom: add CM-QS600 board
  ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone
  ARM: dts: qcom: Add SATA support on IPQ8064/AP148
  MAINTAINERS: Update Santosh Shilimkar's email id
  ARM: sunxi_defconfig: enable CONFIG_REGULATOR
  ARM: dts: Disable smc91x on n900 until bootloader dependency is removed
  ARM: omap2plus_defconfig: Enable ARM erratum 430973 for omap3
  ARM: exynos_defconfig: enable USB gadget support
  ARM: exynos_defconfig: Enable Maxim 77693 and I2C GPIO drivers
  ARM: mm: Fix ifdef around cpu_*_do_[suspend, resume] ops
  ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n
  ARM: SAMSUNG: Restore Samsung PM Debug functionality
  ARM: dts: Fix pull setting in sd4_width8 pin group for exynos4x12
  ARM: exynos_defconfig: Enable SBS battery support
  ARM: exynos_defconfig: Enable Control Groups support
  ARM: exynos_defconfig: Enable Atmel maXTouch support
  ARM: exynos_defconfig: Enable MAX77802
2014-10-19 17:43:06 -07:00
Linus Torvalds
ab074ade9c Merge git://git.infradead.org/users/eparis/audit
Pull audit updates from Eric Paris:
 "So this change across a whole bunch of arches really solves one basic
  problem.  We want to audit when seccomp is killing a process.  seccomp
  hooks in before the audit syscall entry code.  audit_syscall_entry
  took as an argument the arch of the given syscall.  Since the arch is
  part of what makes a syscall number meaningful it's an important part
  of the record, but it isn't available when seccomp shoots the
  syscall...

  For most arch's we have a better way to get the arch (syscall_get_arch)
  So the solution was two fold: Implement syscall_get_arch() everywhere
  there is audit which didn't have it.  Use syscall_get_arch() in the
  seccomp audit code.  Having syscall_get_arch() everywhere meant it was
  a useless flag on the stack and we could get rid of it for the typical
  syscall entry.

  The other changes inside the audit system aren't grand, fixed some
  records that had invalid spaces.  Better locking around the task comm
  field.  Removing some dead functions and structs.  Make some things
  static.  Really minor stuff"

* git://git.infradead.org/users/eparis/audit: (31 commits)
  audit: rename audit_log_remove_rule to disambiguate for trees
  audit: cull redundancy in audit_rule_change
  audit: WARN if audit_rule_change called illegally
  audit: put rule existence check in canonical order
  next: openrisc: Fix build
  audit: get comm using lock to avoid race in string printing
  audit: remove open_arg() function that is never used
  audit: correct AUDIT_GET_FEATURE return message type
  audit: set nlmsg_len for multicast messages.
  audit: use union for audit_field values since they are mutually exclusive
  audit: invalid op= values for rules
  audit: use atomic_t to simplify audit_serial()
  kernel/audit.c: use ARRAY_SIZE instead of sizeof/sizeof[0]
  audit: reduce scope of audit_log_fcaps
  audit: reduce scope of audit_net_id
  audit: arm64: Remove the audit arch argument to audit_syscall_entry
  arm64: audit: Add audit hook in syscall_trace_enter/exit()
  audit: x86: drop arch from __audit_syscall_entry() interface
  sparc: implement is_32bit_task
  sparc: properly conditionalize use of TIF_32BIT
  ...
2014-10-19 16:25:56 -07:00
Olof Johansson
57764512ce Merge tag 'qcom-dt-for-3.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into fixes
Merge "qcom DT changes for v3.18-3" from Kumar Gala:

Qualcomm ARM Based Device Tree Updates for v3.18-3

* Added Board support for CM-QS600 and Sony Xperia Z1 phone
* Added SATA support on IPQ8064/AP148

* tag 'qcom-dt-for-3.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
  ARM: dts: qcom: add CM-QS600 board
  ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone
  ARM: dts: qcom: Add SATA support on IPQ8064/AP148
2014-10-19 13:39:08 -07:00
Olof Johansson
e29c64865f 2nd Samsung fixes for v3.18
- Explicitly set dr_mode on exynos5800-peach-pi, exynos5420-peach-pit
   and exynos5420-arndale-octa boards, because the USB dwc3 controller
   will not work properly without dr_mode as host on above boards if
   the USB host and gadget are enabled in kernel configuration both.
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Merge tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Pull more fixes from Kukjin Kim:

2nd Samsung fixes for v3.18
- Explicitly set dr_mode on exynos5800-peach-pi, exynos5420-peach-pit
  and exynos5420-arndale-octa boards, because the USB dwc3 controller
  will not work properly without dr_mode as host on above boards if
  the USB host and gadget are enabled in kernel configuration both.

* tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa
  ARM: dts: Explicitly set dr_mode on exynos Peach boards

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-19 13:34:52 -07:00
Linus Torvalds
8a5de18239 Second batch of changes for KVM/{arm,arm64} for 3.18
- Support for 48bit IPA and VA (EL2)
 - A number of fixes for devices mapped into guests
 - Yet another VGIC fix for BE
 - A fix for CPU hotplug
 - A few compile fixes (disabled VGIC, strict mm checks)
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Merge tag 'kvm-arm-for-3.18-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm

Pull second batch of changes for KVM/{arm,arm64} from Marc Zyngier:
 "The most obvious thing is the sizeable MMU changes to support 48bit
  VAs on arm64.

  Summary:

   - support for 48bit IPA and VA (EL2)
   - a number of fixes for devices mapped into guests
   - yet another VGIC fix for BE
   - a fix for CPU hotplug
   - a few compile fixes (disabled VGIC, strict mm checks)"

[ I'm pulling directly from Marc at the request of Paolo Bonzini, whose
  backpack was stolen at Düsseldorf airport and will do new keys and
  rebuild his web of trust.    - Linus ]

* tag 'kvm-arm-for-3.18-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm:
  arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regs
  arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort
  arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE
  arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2
  arm/arm64: KVM: map MMIO regions at creation time
  arm64: kvm: define PAGE_S2_DEVICE as read-only by default
  ARM: kvm: define PAGE_S2_DEVICE as read-only by default
  arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremap
  arm/arm64: KVM: fix potential NULL dereference in user_mem_abort()
  arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages
  ARM: KVM: fix vgic-disabled build
  arm: kvm: fix CPU hotplug
2014-10-18 14:32:31 -07:00
Linus Torvalds
511c41d9e6 MTD updates for 3.18
NAND
  * Cleanup for Denali driver
  * Atmel: add support for new page sizes
  * Atmel: fix up 'raw' mode support
  * Atmel: miscellaneous cleanups
  * New timing mode helpers for non-ONFI NAND
  * OMAP: allow driver to be (properly) built as a module
  * bcm47xx: RESET support and other cleanups
 
 SPI NOR
  * Miscellaneous cleanups, to prepare framework for wider use (some further
    work still pending)
  * Compile-time configuration to select 4K vs. 64K support for flash that
    support both (necessary for using UBIFS on some SPI NOR)
 
 A few scattered code quality fixes, detected by Coverity
 
 See the changesets for more.
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Merge tag 'for-linus-20141015' of git://git.infradead.org/linux-mtd

Pull MTD update from Brian Norris:
 "Sorry for delaying this a bit later than usual.  There's one mild
  regression from 3.16 that was noticed during the 3.17 cycle, and I
  meant to send a fix for it along with this pull request.  I'll
  probably try to queue it up for a later pull request once I've had a
  better look at it, hopefully by -rc2 at the latest.

  Summary for this pull:

  NAND
   - Cleanup for Denali driver
   - Atmel: add support for new page sizes
   - Atmel: fix up 'raw' mode support
   - Atmel: miscellaneous cleanups
   - New timing mode helpers for non-ONFI NAND
   - OMAP: allow driver to be (properly) built as a module
   - bcm47xx: RESET support and other cleanups

  SPI NOR
   - Miscellaneous cleanups, to prepare framework for wider use (some
     further work still pending)
   - Compile-time configuration to select 4K vs.  64K support for flash
     that support both (necessary for using UBIFS on some SPI NOR)

  A few scattered code quality fixes, detected by Coverity

  See the changesets for more"

* tag 'for-linus-20141015' of git://git.infradead.org/linux-mtd: (59 commits)
  mtd: nand: omap: Correct CONFIG_MTD_NAND_OMAP_BCH help message
  mtd: nand: Force omap_elm to be built as a module if omap2_nand is a module
  mtd: move support for struct flash_platform_data into m25p80
  mtd: spi-nor: add Kconfig option to disable 4K sectors
  mtd: nand: Move ELM driver and rename as omap_elm
  nand: omap2: Replace pr_err with dev_err
  nand: omap2: Remove horrible ifdefs to fix module probe
  mtd: nand: add Hynix's H27UCG8T2ATR-BC to nand_ids table
  mtd: nand: support ONFI timing mode retrieval for non-ONFI NANDs
  mtd: physmap_of: Add non-obsolete map_rom probe
  mtd: physmap_of: Fix ROM support via OF
  MAINTAINERS: add l2-mtd.git, 'next' tree for MTD
  mtd: denali: fix indents and other trivial things
  mtd: denali: remove unnecessary parentheses
  mtd: denali: remove another set-but-unused variable
  mtd: denali: fix include guard and license block of denali.h
  mtd: nand: don't break long print messages
  mtd: bcm47xxnflash: replace some magic numbers
  mtd: bcm47xxnflash: NAND_CMD_RESET support
  mtd: bcm47xxnflash: add cmd_ctrl handler
  ...
2014-10-18 11:48:03 -07:00
Sjoerd Simons
4e03394e93 ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa
Explicitly set the dr_mode for the second dwc3 controller on the
Arndale Octa board to host mode. This is required to ensure the
controller is initialized in the right mode if the kernel is build
with USB gadget support.

Reported-By: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-10-17 08:17:35 +09:00
Sjoerd Simons
e1c69efc52 ARM: dts: Explicitly set dr_mode on exynos Peach boards
In case the optional dr_mode property isn't set in the dwc3 nodes the
the controller will go into OTG mode if both USB host and USB gadget
functionality are enabled in the kernel configuration. Unfortunately
this results in USB not working on exynos5420-peach-pit and
exynos5800-peach-pi with such a kernel configuration unless manually
change the mode. To resolve that explicitly configure the dual role
mode as host.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-10-17 08:17:35 +09:00
Christoffer Dall
2df36a5dd6 arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regs
The EIRSR and ELRSR registers are 32-bit registers on GICv2, and we
store these as an array of two such registers on the vgic vcpu struct.
However, we access them as a single 64-bit value or as a bitmap pointer
in the generic vgic code, which breaks BE support.

Instead, store them as u64 values on the vgic structure and do the
word-swapping in the assembly code, which already handles the byte order
for BE systems.

Tested-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-16 10:57:41 +02:00
Mike Rapoport
7dac24bdc1 ARM: dts: qcom: add CM-QS600 board
CM-QS600 is a APQ8064 based computer on module.
The details are available at
http://compulab.co.il/products/computer-on-modules/cm-qs600/

Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-10-16 02:48:36 -05:00
Tim Bird
71b5235ab6 ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone
This DTS has support for the Sony Xperia Z1 phone (codenamed Honami).
This first version of the DTS supports just a serial console.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-10-16 02:48:20 -05:00
Kumar Gala
e512448f6e ARM: dts: qcom: Add SATA support on IPQ8064/AP148
Add SATA PHY and SATA AHCI controller nodes to device tree to enable
generic ahci support on the IPQ8064/AP148 board.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-10-16 02:44:47 -05:00
Steve Capper
3d08c62924 arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort
Commit:
b886576 ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping

introduced some code in user_mem_abort that failed to compile if
STRICT_MM_TYPECHECKS was enabled.

This patch fixes up the failing comparison.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-15 11:25:22 +02:00
Olof Johansson
22414f776d Samsung defconfig, actually exynos_defconig updates for v3.18
- enable USB gadget support
 - enable Maxim77802 support
 - enable Maxim77693 and I2C GPIO drivers
 - enable Atmel maXTouch support
 - enable SBS battery support
 - enable Control Groups support
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Merge tag 'samsung-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung defconfig, actually exynos_defconig updates for v3.18" from
Kukjin Kim:

- enable USB gadget support
- enable Maxim77802 support
- enable Maxim77693 and I2C GPIO drivers
- enable Atmel maXTouch support
- enable SBS battery support
- enable Control Groups support

* tag 'samsung-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: exynos_defconfig: enable USB gadget support
  ARM: exynos_defconfig: Enable Maxim 77693 and I2C GPIO drivers
  ARM: exynos_defconfig: Enable SBS battery support
  ARM: exynos_defconfig: Enable Control Groups support
  ARM: exynos_defconfig: Enable Atmel maXTouch support
  ARM: exynos_defconfig: Enable MAX77802

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-14 23:32:31 -07:00
Olof Johansson
e17fd8e58a Samsung fixes for v3.18
- fix ifdef around cpu_*_do_[suspend, resume] ops to check
   CONFIG_ARM_CPU_SUSPEND and not CONFIG_PM_SLEEP
 - fix exynos_defconfig build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n
 - fix enabling Samsung PM debug functionality due to recently merged
   patches and previous merge conflicts
 - fix pull-up setting in sd4_width8 pin group for exynos4x12
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Merge tag 'samsung-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung fixes for v3.18" from Kukjin Kim:

- fix ifdef around cpu_*_do_[suspend, resume] ops to check
  CONFIG_ARM_CPU_SUSPEND and not CONFIG_PM_SLEEP
- fix exynos_defconfig build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n
- fix enabling Samsung PM debug functionality due to recently merged
  patches and previous merge conflicts
- fix pull-up setting in sd4_width8 pin group for exynos4x12

* tag 'samsung-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: mm: Fix ifdef around cpu_*_do_[suspend, resume] ops
  ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n
  ARM: SAMSUNG: Restore Samsung PM Debug functionality
  ARM: dts: Fix pull setting in sd4_width8 pin group for exynos4x12

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-14 23:31:13 -07:00
Olof Johansson
6d81dc87c0 Two omap fixes for issues noticed during the merge window:
- We need to enable ARM errata 430973 for omap3
 
 - The smc91x on some early n900 boards need to be disabled
   for now until the dependencies to specific a bootloader
   version are fixed
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Merge tag 'fixes-for-v3.18-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Merge "Two omap fixes for v3.18 merge window" from Tony Lindgren:

Two omap fixes for issues noticed during the merge window:

- We need to enable ARM errata 430973 for omap3

- The smc91x on some early n900 boards need to be disabled
  for now until the dependencies to specific a bootloader
  version are fixed

* tag 'fixes-for-v3.18-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Disable smc91x on n900 until bootloader dependency is removed
  ARM: omap2plus_defconfig: Enable ARM erratum 430973 for omap3

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-14 23:30:36 -07:00
Olof Johansson
9a2ad529ed ARM: sunxi_defconfig: enable CONFIG_REGULATOR
Commit 97a13e5289 ('net: phy: mdio-sun4i: don't select REGULATOR') removed
the select of REGULATOR, which means that it now has to be explicitly
enabled in the defconfig or things won't work very well.

In particular, this fixes a problem with SD/MMC not probing on my A31-based
board.

Cc: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-14 23:26:58 -07:00
Linus Torvalds
0429fbc0bd Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu consistent-ops changes from Tejun Heo:
 "Way back, before the current percpu allocator was implemented, static
  and dynamic percpu memory areas were allocated and handled separately
  and had their own accessors.  The distinction has been gone for many
  years now; however, the now duplicate two sets of accessors remained
  with the pointer based ones - this_cpu_*() - evolving various other
  operations over time.  During the process, we also accumulated other
  inconsistent operations.

  This pull request contains Christoph's patches to clean up the
  duplicate accessor situation.  __get_cpu_var() uses are replaced with
  with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr().

  Unfortunately, the former sometimes is tricky thanks to C being a bit
  messy with the distinction between lvalues and pointers, which led to
  a rather ugly solution for cpumask_var_t involving the introduction of
  this_cpu_cpumask_var_ptr().

  This converts most of the uses but not all.  Christoph will follow up
  with the remaining conversions in this merge window and hopefully
  remove the obsolete accessors"

* 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits)
  irqchip: Properly fetch the per cpu offset
  percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix
  ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write.
  percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t
  Revert "powerpc: Replace __get_cpu_var uses"
  percpu: Remove __this_cpu_ptr
  clocksource: Replace __this_cpu_ptr with raw_cpu_ptr
  sparc: Replace __get_cpu_var uses
  avr32: Replace __get_cpu_var with __this_cpu_write
  blackfin: Replace __get_cpu_var uses
  tile: Use this_cpu_ptr() for hardware counters
  tile: Replace __get_cpu_var uses
  powerpc: Replace __get_cpu_var uses
  alpha: Replace __get_cpu_var
  ia64: Replace __get_cpu_var uses
  s390: cio driver &__get_cpu_var replacements
  s390: Replace __get_cpu_var uses
  mips: Replace __get_cpu_var uses
  MIPS: Replace __get_cpu_var uses in FPU emulator.
  arm: Replace __this_cpu_ptr with raw_cpu_ptr
  ...
2014-10-15 07:48:18 +02:00
Linus Torvalds
c0fa2373f8 The clk tree changes for 3.18 are dominated by clock drivers. Mostly
fixes and enhancements to existing drivers as well as new drivers. This
 tag contains a bit more arch code than I usually take due to some OMAP2+
 changes. Additionally it contains the restart notifier handlers which
 are merged as a dependency into several trees.
 
 The PXA changes are the only messy part. Due to having a stable tree I
 had to revert one patch and follow up with one more fix near the tip of
 this tag. Some dead code is introduced but it will soon become live code
 after 3.18-rc1 is released as the rest of the PXA family is converted
 over to the common clock framework.
 
 Another trend in this tag is that multiple vendors have started to push
 the complexity of changing their CPU frequency into the clock driver,
 whereas this used to be done in CPUfreq drivers.
 
 Changes to the clk core include a generic gpio-clock type and a
 clk_set_phase() function added to the top-level clk.h api. Due to some
 confusion on the fbdev mailing list the kernel boot parameters
 documentation was updated to further explain the clk_ignore_unused
 parameter, which is often required by users of the simplefb driver.
 Finally some fixes to the locking around the clock debugfs stuff was
 done to prevent deadlocks when interacting with other subsystems.
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Merge tag 'clk-for-linus-3.18' of git://git.linaro.org/people/mike.turquette/linux

Pull clock tree updates from Mike Turquette:
 "The clk tree changes for 3.18 are dominated by clock drivers.  Mostly
  fixes and enhancements to existing drivers as well as new drivers.
  This tag contains a bit more arch code than I usually take due to some
  OMAP2+ changes.  Additionally it contains the restart notifier
  handlers which are merged as a dependency into several trees.

  The PXA changes are the only messy part.  Due to having a stable tree
  I had to revert one patch and follow up with one more fix near the tip
  of this tag.  Some dead code is introduced but it will soon become
  live code after 3.18-rc1 is released as the rest of the PXA family is
  converted over to the common clock framework.

  Another trend in this tag is that multiple vendors have started to
  push the complexity of changing their CPU frequency into the clock
  driver, whereas this used to be done in CPUfreq drivers.

  Changes to the clk core include a generic gpio-clock type and a
  clk_set_phase() function added to the top-level clk.h api.  Due to
  some confusion on the fbdev mailing list the kernel boot parameters
  documentation was updated to further explain the clk_ignore_unused
  parameter, which is often required by users of the simplefb driver.

  Finally some fixes to the locking around the clock debugfs stuff was
  done to prevent deadlocks when interacting with other subsystems."

* tag 'clk-for-linus-3.18' of git://git.linaro.org/people/mike.turquette/linux: (99 commits)
  clk: pxa clocks build system fix
  Revert "arm: pxa: Transition pxa27x to clk framework"
  clk: samsung: register restart handlers for s3c2412 and s3c2443
  clk: rockchip: add restart handler
  clk: rockchip: rk3288: i2s_frac adds flag to set parent's rate
  doc/kernel-parameters.txt: clarify clk_ignore_unused
  arm: pxa: Transition pxa27x to clk framework
  dts: add devicetree bindings for pxa27x clocks
  clk: add pxa27x clock drivers
  arm: pxa: add clock pll selection bits
  clk: dts: document pxa clock binding
  clk: add pxa clocks infrastructure
  clk: gpio-gate: Ensure gpiod_ APIs are prototyped
  clk: ti: dra7-atl-clock: Mark the device as pm_runtime_irq_safe
  clk: ti: LLVMLinux: Move __init outside of type definition
  clk: ti: consider the fact that of_clk_get() might return an error
  clk: ti: dra7-atl-clock: fix a memory leak
  clk: ti: change clock init to use generic of_clk_init
  clk: hix5hd2: add I2C clocks
  clk: hix5hd2: add watchdog0 clocks
  ...
2014-10-15 07:05:03 +02:00
Christoffer Dall
c3058d5da2 arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE
When creating or moving a memslot, make sure the IPA space is within the
addressable range of the guest.  Otherwise, user space can create too
large a memslot and KVM would try to access potentially unallocated page
table entries when inserting entries in the Stage-2 page tables.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-14 05:48:25 -07:00
Christoffer Dall
38f791a4e4 arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2
This patch adds the necessary support for all host kernel PGSIZE and
VA_SPACE configuration options for both EL2 and the Stage-2 page tables.

However, for 40bit and 42bit PARange systems, the architecture mandates
that VTCR_EL2.SL0 is maximum 1, resulting in fewer levels of stage-2
pagge tables than levels of host kernel page tables.  At the same time,
systems with a PARange > 42bit, we limit the IPA range by always setting
VTCR_EL2.T0SZ to 24.

To solve the situation with different levels of page tables for Stage-2
translation than the host kernel page tables, we allocate a dummy PGD
with pointers to our actual inital level Stage-2 page table, in order
for us to reuse the kernel pgtable manipulation primitives.  Reproducing
all these in KVM does not look pretty and unnecessarily complicates the
32-bit side.

Systems with a PARange < 40bits are not yet supported.

 [ I have reworked this patch from its original form submitted by
   Jungseok to take the architecture constraints into consideration.
   There were too many changes from the original patch for me to
   preserve the authorship.  Thanks to Catalin Marinas for his help in
   figuring out a good solution to this challenge.  I have also fixed
   various bugs and missing error code handling from the original
   patch. - Christoffer ]

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-14 05:48:19 -07:00
Linus Torvalds
2d65a9f48f Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "This is the main git pull for the drm,

  I pretty much froze major pulls at -rc5/6 time, and haven't had much
  fallout, so will probably continue doing that.

  Lots of changes all over, big internal header cleanup to make it clear
  drm features are legacy things and what are things that modern KMS
  drivers should be using.  Also big move to use the new generic fences
  in all the TTM drivers.

  core:
        atomic prep work,
        vblank rework changes, allows immediate vblank disables
        major header reworking and cleanups to better delinate legacy
        interfaces from what KMS drivers should be using.
        cursor planes locking fixes

  ttm:
        move to generic fences (affects all TTM drivers)
        ppc64 caching fixes

  radeon:
        userptr support,
        uvd for old asics,
        reset rework for fence changes
        better buffer placement changes,
        dpm feature enablement
        hdmi audio support fixes

  intel:
        Cherryview work,
        180 degree rotation,
        skylake prep work,
        execlist command submission
        full ppgtt prep work
        cursor improvements
        edid caching,
        vdd handling improvements

  nouveau:
        fence reworking
        kepler memory clock work
        gt21x clock work
        fan control improvements
        hdmi infoframe fixes
        DP audio

  ast:
        ppc64 fixes
        caching fix

  rcar:
        rcar-du DT support

  ipuv3:
        prep work for capture support

  msm:
        LVDS support for mdp4, new panel, gpu refactoring

  exynos:
        exynos3250 SoC support, drop bad mmap interface,
        mipi dsi changes, and component match support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (640 commits)
  drm/mst: rework payload table allocation to conform better.
  drm/ast: Fix HW cursor image
  drm/radeon/kv: add uvd/vce info to dpm debugfs output
  drm/radeon/ci: add uvd/vce info to dpm debugfs output
  drm/radeon: export reservation_object from dmabuf to ttm
  drm/radeon: cope with foreign fences inside the reservation object
  drm/radeon: cope with foreign fences inside display
  drm/core: use helper to check driver features
  drm/radeon/cik: write gfx ucode version to ucode addr reg
  drm/radeon/si: print full CS when we hit a packet 0
  drm/radeon: remove unecessary includes
  drm/radeon/combios: declare legacy_connector_convert as static
  drm/radeon/atombios: declare connector convert tables as static
  drm/radeon: drop btc_get_max_clock_from_voltage_dependency_table
  drm/radeon/dpm: drop clk/voltage dependency filters for BTC
  drm/radeon/dpm: drop clk/voltage dependency filters for CI
  drm/radeon/dpm: drop clk/voltage dependency filters for SI
  drm/radeon/dpm: drop clk/voltage dependency filters for NI
  drm/radeon: disable audio when we disable hdmi (v2)
  drm/radeon: split audio enable between eg and r600 (v2)
  ...
2014-10-14 09:39:08 +02:00
Linus Torvalds
f33a3faa25 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild changes from Michal Marek:
 - fix for handling dependencies of *-objs targets by Masahiro Yamada
 - lots of cleanups in the kbuild machinery, also by Masahiro
 - fixes for the kconfig build to use an UTF-8 capable ncurses library
   if possible and to build on not-so-standard installs
 - some more minor fixes

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Do not reference *-n variables in the Makefile
  kbuild: simplify build, clean, modbuiltin shorthands
  kbuild: arm: Do not define "comma" twice
  kbuild: remove obj-n and lib-n handling
  kbuild: remove unnecessary variable initializaions
  kbuild: remove unnecessary "obj- := dummy.o" trick
  kbuild: handle C=... and M=... after entering into build directory
  kbuild: use $(Q) for sub-make target
  kbuild: fake the "Entering directory ..." message more simply
  kconfig/lxdialog: get ncurses CFLAGS with pkg-config
  kconfig: nconfig: fix multi-byte UTF handling
  kconfig: lxdialog: fix spelling
  kbuild: Make scripts executable
  kbuild: remove redundant clean-files from scripts/kconfig/Makefile
  kbuild: refactor script/kconfig/Makefile
  kbuild: handle the dependency of multi-objs hostprogs appropriately
  kbuild: handle multi-objs dependency appropriately
2014-10-14 09:22:26 +02:00
Linus Torvalds
dfe2c6dcc8 Merge branch 'akpm' (patches from Andrew Morton)
Merge second patch-bomb from Andrew Morton:
 - a few hotfixes
 - drivers/dma updates
 - MAINTAINERS updates
 - Quite a lot of lib/ updates
 - checkpatch updates
 - binfmt updates
 - autofs4
 - drivers/rtc/
 - various small tweaks to less used filesystems
 - ipc/ updates
 - kernel/watchdog.c changes

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (135 commits)
  mm: softdirty: enable write notifications on VMAs after VM_SOFTDIRTY cleared
  kernel/param: consolidate __{start,stop}___param[] in <linux/moduleparam.h>
  ia64: remove duplicate declarations of __per_cpu_start[] and __per_cpu_end[]
  frv: remove unused declarations of __start___ex_table and __stop___ex_table
  kvm: ensure hard lockup detection is disabled by default
  kernel/watchdog.c: control hard lockup detection default
  staging: rtl8192u: use %*pEn to escape buffer
  staging: rtl8192e: use %*pEn to escape buffer
  staging: wlan-ng: use %*pEhp to print SN
  lib80211: remove unused print_ssid()
  wireless: hostap: proc: print properly escaped SSID
  wireless: ipw2x00: print SSID via %*pE
  wireless: libertas: print esaped string via %*pE
  lib/vsprintf: add %*pE[achnops] format specifier
  lib / string_helpers: introduce string_escape_mem()
  lib / string_helpers: refactoring the test suite
  lib / string_helpers: move documentation to c-file
  include/linux: remove strict_strto* definitions
  arch/x86/mm/numa.c: fix boot failure when all nodes are hotpluggable
  fs: check bh blocknr earlier when searching lru
  ...
2014-10-14 03:54:50 +02:00
Linus Torvalds
ba1a96fc7d Merge branch 'x86-seccomp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 seccomp changes from Ingo Molnar:
 "This tree includes x86 seccomp filter speedups and related preparatory
  work, which touches core seccomp facilities as well.

  The main idea is to split seccomp into two phases, to be able to enter
  a simple fast path for syscalls with ptrace side effects.

  There's no substantial user-visible (and ABI) effects expected from
  this, except a change in how we emit a better audit record for
  SECCOMP_RET_TRACE events"

* 'x86-seccomp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86_64, entry: Use split-phase syscall_trace_enter for 64-bit syscalls
  x86_64, entry: Treat regs->ax the same in fastpath and slowpath syscalls
  x86: Split syscall_trace_enter into two phases
  x86, entry: Only call user_exit if TIF_NOHZ
  x86, x32, audit: Fix x32's AUDIT_ARCH wrt audit
  seccomp: Document two-phase seccomp and arch-provided seccomp_data
  seccomp: Allow arch code to provide seccomp_data
  seccomp: Refactor the filter callback and the API
  seccomp,x86,arm,mips,s390: Remove nr parameter from secure_computing
2014-10-14 02:27:06 +02:00
Rasmus Villemoes
2bebf5cb4e ARM: replace strnicmp with strncasecmp
The kernel used to contain two functions for length-delimited,
case-insensitive string comparison, strnicmp with correct semantics and
a slightly buggy strncasecmp.  The latter is the POSIX name, so strnicmp
was renamed to strncasecmp, and strnicmp made into a wrapper for the new
strncasecmp to avoid breaking existing users.

To allow the compat wrapper strnicmp to be removed at some point in the
future, and to avoid the extra indirection cost, do
s/strnicmp/strncasecmp/g.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14 02:18:24 +02:00
Chanwoo Choi
7823047765 ARM: dts: fix wrong compatible string of Exynos3250 RTC dt node
Fix wrong compatible string of Exynos3250 RTC (Real-Time Clock) dt node.
The RTC of Exynos3250 must need additional source clock (XrtcXTI).

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14 02:18:17 +02:00
Linus Torvalds
faafcba3b5 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Optimized support for Intel "Cluster-on-Die" (CoD) topologies (Dave
     Hansen)

   - Various sched/idle refinements for better idle handling (Nicolas
     Pitre, Daniel Lezcano, Chuansheng Liu, Vincent Guittot)

   - sched/numa updates and optimizations (Rik van Riel)

   - sysbench speedup (Vincent Guittot)

   - capacity calculation cleanups/refactoring (Vincent Guittot)

   - Various cleanups to thread group iteration (Oleg Nesterov)

   - Double-rq-lock removal optimization and various refactorings
     (Kirill Tkhai)

   - various sched/deadline fixes

  ... and lots of other changes"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
  sched/dl: Use dl_bw_of() under rcu_read_lock_sched()
  sched/fair: Delete resched_cpu() from idle_balance()
  sched, time: Fix build error with 64 bit cputime_t on 32 bit systems
  sched: Improve sysbench performance by fixing spurious active migration
  sched/x86: Fix up typo in topology detection
  x86, sched: Add new topology for multi-NUMA-node CPUs
  sched/rt: Use resched_curr() in task_tick_rt()
  sched: Use rq->rd in sched_setaffinity() under RCU read lock
  sched: cleanup: Rename 'out_unlock' to 'out_free_new_mask'
  sched: Use dl_bw_of() under RCU read lock
  sched/fair: Remove duplicate code from can_migrate_task()
  sched, mips, ia64: Remove __ARCH_WANT_UNLOCKED_CTXSW
  sched: print_rq(): Don't use tasklist_lock
  sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock()
  sched: Fix the task-group check in tg_has_rt_tasks()
  sched/fair: Leverage the idle state info when choosing the "idlest" cpu
  sched: Let the scheduler see CPU idle states
  sched/deadline: Fix inter- exclusive cpusets migrations
  sched/deadline: Clear dl_entity params when setscheduling to different class
  sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault()
  ...
2014-10-13 16:23:15 +02:00
Linus Torvalds
dbb885fecc Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull arch atomic cleanups from Ingo Molnar:
 "This is a series kept separate from the main locking tree, which
  cleans up and improves various details in the atomics type handling:

   - Remove the unused atomic_or_long() method

   - Consolidate and compress atomic ops implementations between
     architectures, to reduce linecount and to make it easier to add new
     ops.

   - Rewrite generic atomic support to only require cmpxchg() from an
     architecture - generate all other methods from that"

* 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
  locking, mips: Fix atomics
  locking, sparc64: Fix atomics
  locking,arch: Rewrite generic atomic support
  locking,arch,xtensa: Fold atomic_ops
  locking,arch,sparc: Fold atomic_ops
  locking,arch,sh: Fold atomic_ops
  locking,arch,powerpc: Fold atomic_ops
  locking,arch,parisc: Fold atomic_ops
  locking,arch,mn10300: Fold atomic_ops
  locking,arch,mips: Fold atomic_ops
  locking,arch,metag: Fold atomic_ops
  locking,arch,m68k: Fold atomic_ops
  locking,arch,m32r: Fold atomic_ops
  locking,arch,ia64: Fold atomic_ops
  locking,arch,hexagon: Fold atomic_ops
  locking,arch,cris: Fold atomic_ops
  locking,arch,avr32: Fold atomic_ops
  locking,arch,arm64: Fold atomic_ops
  locking,arch,arm: Fold atomic_ops
  ...
2014-10-13 15:48:00 +02:00
Ard Biesheuvel
8eef91239e arm/arm64: KVM: map MMIO regions at creation time
There is really no point in faulting in memory regions page by page
if they are not backed by demand paged system RAM but by a linear
passthrough mapping of a host MMIO region. So instead, detect such
regions at setup time and install the mappings for the backing all
at once.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-13 03:36:53 -07:00
Linus Torvalds
81ae31d782 xen: features and fixes for 3.18-rc0
- Add pvscsi frontend and backend drivers.
 - Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
 - Try and keep memory contiguous during PV memory setup (reduces
   SWIOTLB usage).
 - Allow front/back drivers to use threaded irqs.
 - Support large initrds in PV guests.
 - Fix PVH guests in preparation for Xen 4.5
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Merge tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen updates from David Vrabel:
 "Features and fixes:

   - Add pvscsi frontend and backend drivers.
   - Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
   - Try and keep memory contiguous during PV memory setup (reduces
     SWIOTLB usage).
   - Allow front/back drivers to use threaded irqs.
   - Support large initrds in PV guests.
   - Fix PVH guests in preparation for Xen 4.5"

* tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
  xen: remove DEFINE_XENBUS_DRIVER() macro
  xen/xenbus: Remove BUG_ON() when error string trucated
  xen/xenbus: Correct the comments for xenbus_grant_ring()
  x86/xen: Set EFER.NX and EFER.SCE in PVH guests
  xen: eliminate scalability issues from initrd handling
  xen: sync some headers with xen tree
  xen: make pvscsi frontend dependant on xenbus frontend
  arm{,64}/xen: Remove "EXPERIMENTAL" in the description of the Xen options
  xen-scsifront: don't deadlock if the ring becomes full
  x86: remove the Xen-specific _PAGE_IOMAP PTE flag
  x86/xen: do not use _PAGE_IOMAP PTE flag for I/O mappings
  x86: skip check for spurious faults for non-present faults
  xen/efi: Directly include needed headers
  xen-scsiback: clean up a type issue in scsiback_make_tpg()
  xen-scsifront: use GFP_ATOMIC under spin_lock
  MAINTAINERS: Add xen pvscsi maintainer
  xen-scsiback: Add Xen PV SCSI backend driver
  xen-scsifront: Add Xen PV SCSI frontend driver
  xen: Add Xen pvSCSI protocol description
  xen/events: support threaded irqs for interdomain event channels
  ...
2014-10-11 20:29:01 -04:00
Linus Torvalds
f43b179bbd MMC core:
- Fix SDIO IRQ bug.
  - MMC regulator improvements.
  - Fix slot-gpio card detect bug.
  - Add support for Driver Stage Register.
  - Convert the common MMC OF parser to use GPIO descriptors.
  - Convert MMC_CAP2_NO_MULTI_READ into a callback, ->multi_io_quirk().
  - Some additional minor fixes.
 
 MMC host:
  - mmci: Support Qualcomm specific DML layer for DMA.
  - dw_mmc: Use common MMC regulators.
  - dw_mmc: Add support for Rock-chips RK3288.
  - tmio: Enable runtime PM support.
  - tmio: Add support for R-Car Gen2 SoCs.
  - tmio: Several fixes and improvements.
  - omap_hsmmc: Removed Balaji from MAINTAINERS.
  - jz4740: add DMA and pre/post support.
  - sdhci: Add support for Intel Braswell.
  - sdhci: Several fixes and improvements.
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Merge tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Fix SDIO IRQ bug
   - MMC regulator improvements
   - Fix slot-gpio card detect bug
   - Add support for Driver Stage Register
   - Convert the common MMC OF parser to use GPIO descriptors
   - Convert MMC_CAP2_NO_MULTI_READ into a callback, ->multi_io_quirk()
   - Some additional minor fixes

  MMC host:
   - mmci: Support Qualcomm specific DML layer for DMA
   - dw_mmc: Use common MMC regulators
   - dw_mmc: Add support for Rock-chips RK3288
   - tmio: Enable runtime PM support
   - tmio: Add support for R-Car Gen2 SoCs
   - tmio: Several fixes and improvements
   - omap_hsmmc: Removed Balaji from MAINTAINERS
   - jz4740: add DMA and pre/post support
   - sdhci: Add support for Intel Braswell
   - sdhci: Several fixes and improvements"

* tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc: (119 commits)
  ARM: dts: fix MMC2 regulators for Exynos5420 Arndale Octa board
  mmc: sdhci-acpi: Fix Braswell eMMC timeout clock frequency
  mmc: sdhci-acpi: Pass HID and UID to probe_slot
  mmc: sdhci-acpi: Get UID directly from acpi_device
  mmc, sdhci, bcm-kona, LLVMLinux: Remove use of __initconst
  mmc: sdhci-pci: Fix Braswell eMMC timeout clock frequency
  mmc: sdhci: Let a driver override timeout clock frequency
  mmc: sdhci-pci: Add Bay Trail and Braswell SD card detect
  mmc: sdhci-pci: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel BYT host controllers
  mmc: sdhci-acpi: Add a HID and UID for a SD Card host controller
  mmc: sdhci-acpi: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel host controllers
  mmc: sdhci: Add quirk for always getting TC with stop cmd
  mmc: core: restore detect line inversion semantics
  mmc: Fix incorrect warning when setting 0 Hz via debugfs
  mmc: Fix use of wrong device in mmc_gpiod_free_cd()
  mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot
  mmc: rtsx_pci: Set power related cap2 macros
  mmc: core: Add new power_mode MMC_POWER_UNDEFINED
  mmc: sdhci: execute tuning when device is not busy
  mmc: atmel-mci: Release mmc resources on failure in probe
  ..
2014-10-11 06:34:22 -04:00
Linus Torvalds
754c780953 Merge branch 'for-v3.18' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull dma-mapping update from Marek Szyprowski:
 "Provide the dma write coherent api (available previously on ARM
  architecture) for all other architectures, which use dma_ops-based dma
  mapping implementation.

  This lets one to use the same code in the device drivers regardless of
  the selected architecture"

* 'for-v3.18' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
  dma-mapping: Provide write-combine allocations
  s390: Implement dma_{alloc,free}_attrs()
2014-10-10 16:56:08 -04:00
Linus Torvalds
93834c6419 Immutable branch with restart handler patches for v3.18
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Merge tag 'restart-handler-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull restart handler infrastructure from Guenter Roeck:
 "This series was supposed to be pulled through various trees using it,
  and I did not plan to send a separate pull request.  As it turns out,
  the pinctrl tree did not merge with it, is now upstream, and uses it,
  meaning there are now build failures.

  Please pull this series directly to fix those build failures"

* tag 'restart-handler-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  arm/arm64: unexport restart handlers
  watchdog: sunxi: register restart handler with kernel restart handler
  watchdog: alim7101: register restart handler with kernel restart handler
  watchdog: moxart: register restart handler with kernel restart handler
  arm: support restart through restart handler call chain
  arm64: support restart through restart handler call chain
  power/restart: call machine_restart instead of arm_pm_restart
  kernel: add support for kernel restart handler call chain
2014-10-10 16:38:02 -04:00
Ard Biesheuvel
903ed3a54d ARM: kvm: define PAGE_S2_DEVICE as read-only by default
Now that we support read-only memslots, we need to make sure that
pass-through device mappings are not mapped writable if the guest
has requested them to be read-only. The existing implementation
already honours this by calling kvm_set_s2pte_writable() on the new
pte in case of writable mappings, so all we need to do is define
the default pgprot_t value used for devices to be PTE_S2_RDONLY.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-10 13:07:37 +02:00
Ard Biesheuvel
c40f2f8ff8 arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremap
Add support for read-only MMIO passthrough mappings by adding a
'writable' parameter to kvm_phys_addr_ioremap. For the moment,
mappings will be read-write even if 'writable' is false, but once
the definition of PAGE_S2_DEVICE gets changed, those mappings will
be created read-only.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-10 13:07:37 +02:00
Ard Biesheuvel
37b544087e arm/arm64: KVM: fix potential NULL dereference in user_mem_abort()
Handle the potential NULL return value of find_vma_intersection()
before dereferencing it.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-10 13:07:37 +02:00
Ard Biesheuvel
e9e8578b6c arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages
Pass __GFP_ZERO to __get_free_pages() instead of calling memset()
explicitly.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-10 13:07:37 +02:00
Linus Torvalds
0cf744bc7a Merge branch 'akpm' (fixes from Andrew Morton)
Merge patch-bomb from Andrew Morton:
 - part of OCFS2 (review is laggy again)
 - procfs
 - slab
 - all of MM
 - zram, zbud
 - various other random things: arch, filesystems.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits)
  nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
  include/linux/screen_info.h: remove unused ORIG_* macros
  kernel/sys.c: compat sysinfo syscall: fix undefined behavior
  kernel/sys.c: whitespace fixes
  acct: eliminate compile warning
  kernel/async.c: switch to pr_foo()
  include/linux/blkdev.h: use NULL instead of zero
  include/linux/kernel.h: deduplicate code implementing clamp* macros
  include/linux/kernel.h: rewrite min3, max3 and clamp using min and max
  alpha: use Kbuild logic to include <asm-generic/sections.h>
  frv: remove deprecated IRQF_DISABLED
  frv: remove unused cpuinfo_frv and friends to fix future build error
  zbud: avoid accessing last unused freelist
  zsmalloc: simplify init_zspage free obj linking
  mm/zsmalloc.c: correct comment for fullness group computation
  zram: use notify_free to account all free notifications
  zram: report maximum used memory
  zram: zram memory size limitation
  zsmalloc: change return value unit of zs_get_total_size_bytes
  zsmalloc: move pages_allocated to zs_pool
  ...
2014-10-09 22:26:14 -04:00
Geert Uytterhoeven
7f8998c7ae nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
The different architectures used their own (and different) declarations:

    extern __visible const void __nosave_begin, __nosave_end;
    extern const void __nosave_begin, __nosave_end;
    extern long __nosave_begin, __nosave_end;

Consolidate them using the first variant in <asm/sections.h>.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:04 -04:00
Steve Capper
b8cd51afe0 arm: mm: enable RCU fast_gup
Activate the RCU fast_gup for ARM.  We also need to force THP splits to
broadcast an IPI s.t.  we block in the fast_gup page walker.  As THP
splits are comparatively rare, this should not lead to a noticeable
performance degradation.

Some pre-requisite functions pud_write and pud_page are also added.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dann Frazier <dann.frazier@canonical.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:01 -04:00
Steve Capper
a0ad5496b2 arm: mm: enable HAVE_RCU_TABLE_FREE logic
In order to implement fast_get_user_pages we need to ensure that the page
table walker is protected from page table pages being freed from under it.

This patch enables HAVE_RCU_TABLE_FREE, any page table pages belonging to
address spaces with multiple users will be call_rcu_sched freed.  Meaning
that disabling interrupts will block the free and protect the fast gup
page walker.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dann Frazier <dann.frazier@canonical.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:01 -04:00
Steve Capper
bd951303be arm: mm: introduce special ptes for LPAE
We need a mechanism to tag ptes as being special, this indicates that no
attempt should be made to access the underlying struct page * associated
with the pte.  This is used by the fast_gup when operating on ptes as it
has no means to access VMAs (that also contain this information)
locklessly.

The L_PTE_SPECIAL bit is already allocated for LPAE, this patch modifies
pte_special and pte_mkspecial to make use of it, and defines
__HAVE_ARCH_PTE_SPECIAL.

This patch also excludes special ptes from the icache/dcache sync logic.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dann Frazier <dann.frazier@canonical.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:00 -04:00
Marek Szyprowski
95b0e655f9 ARM: mm: don't limit default CMA region only to low memory
DMA-mapping supports CMA regions places either in low or high memory, so
there is no longer needed to limit default CMA regions only to low memory.
 The real limit is still defined by architecture specific DMA limit.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:25:53 -04:00
Laura Abbott
36d0fd2198 arm: use genalloc for the atomic pool
ARM currently uses a bitmap for tracking atomic allocations.  genalloc
already handles this type of memory pool allocation so switch to using
that instead.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Riley <davidriley@chromium.org>
Cc: Olof Johansson <olof@lixom.net>
Cc: Ritesh Harjain <ritesh.harjani@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:25:52 -04:00
Laura Abbott
513510ddba common: dma-mapping: introduce common remapping functions
For architectures without coherent DMA, memory for DMA may need to be
remapped with coherent attributes.  Factor out the the remapping code from
arm and put it in a common location to reduce code duplication.

As part of this, the arm APIs are now migrated away from
ioremap_page_range to the common APIs which use map_vm_area for remapping.
 This should be an equivalent change and using map_vm_area is more correct
as ioremap_page_range is intended to bring in io addresses into the cpu
space and not regular kernel managed memory.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Riley <davidriley@chromium.org>
Cc: Olof Johansson <olof@lixom.net>
Cc: Ritesh Harjain <ritesh.harjani@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Mitchel Humpherys <mitchelh@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:25:52 -04:00