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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt64
Merge "NXP/Freescale arm64 dts update for 4.6" from Shawn Guo:
- Add "snps,quirk-frame-length-adjustment" property to USB3 node for
erratum A009116, which affects NXP/Freescale arm64 SoCs LS1043A and
LS2080A.
* tag 'imx-dt64-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: dts: ls1043a: Add quirk for Erratum A009116
arm64: dts: ls2080a: Add quirk for Erratum A009116
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git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/dt64
Merge "Qualcomm ARM64 Updates for v4.6" from Andy Gross:
* Add MSM8996 support
* Cleanups for MSM8916
* Updates for APQ8016 SBC
* Fixup pmic reg properties
* Add RPMCC node for 8916
* Add LPASS audio nodes
* Add USB support on MSM8916
* tag 'qcom-arm64-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: (24 commits)
arm64: dts: qcom: Fix MPP's function used for LED control
arm64: dts: qcom: fix usb digital voltage levels
arm64: dts: qcom: apq8016-sbc: enable lpass on DB410c
arm64: dts: qcom: add lpass node
arm64: dts: qcom: add audio pinctrls
arm64: dts: qcom: apq8016-sbc: add usb support
arm64: dts: qcom: add manual pullup setting to otg.
arm64: dts: qcom: msm8916: Add RPMCC DT node
ARM64: dts: qcom: Remove size elements from pmic reg properties
arm64: dts: msm8996: Add #power-domain-cells property
arm64: dts: apq8016-sbc: Add real regulators and pinctrl for sdhc
arm64: dts: apq8016-sbc: move sdhci node under soc node
arm64: dts: apq8016-sbc: make 1.8v available on LS expansion
arm64: dts: apq8016-sbc: add regulators support
arm64: dts: qcom: add lable for smd rpm regulators
arm64: dts: remove s2 regulator from smd regulators.
arm64: dts: qcom: add correct drive strenght on cs pins
arm64: dts: qcom: remove redundant spi cs pins from pinconf
arm64: dts: apq8016-sbc: Add aliases to spi device.
arm64: dts: Add L2 cache node to msm8916
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git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/dt
Merge "at91: dt for 4.6 #2" from Nicolas Ferre:
Second 4.6 DT series, all patches for sama5d2 and its Xplained board:
- addition of the NAND flash node
- addition of the dma properties for UART/USART nodes
- one update of the sama5d2 Xplained phy node
- addition of USB pinmux, button and leds
* tag 'at91-dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
ARM: dts: at91: sama5d2 Xplained: add leds node
ARM: dts: at91: sama5d2 Xplained: add user push button
ARM: dts: at91: sama5d2 Xplained: set pin muxing for usb gadget and usb host
ARM: dts: at91: sama5d2: add nand0 and nfc0 nodes
ARM: dts: at91: sama5d2: add dma properties to UART nodes
ARM: dts: at91: sama5d2 Xplained: Correct the macb irq pinctrl node
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git://git.kernel.org/pub/scm/linux/kernel/git/mcoquelin/stm32 into next/dt
Merge "STM32 DT updates for v4.6 #2" from Maxime Coquelin:
Highlights:
-----------
- Fix clock references in GPIO nodes
- Add early support to stm32f469 MCU
- Add USB HS support in host mdoe to stm32429-eval board
- Add Ethernet support to stm32429-eval board
* tag 'stm32-dt-for-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mcoquelin/stm32:
ARM: dts: stm32f429: Enable Ethernet on Eval board
ARM: dts: stm32f429: Add Ethernet support
ARM: dts: stm32f429: Add system config bank node
ARM: dts: stm32429i-eval: Add USB HS host mode support
ARM: dts: stm32f429: Fix clocks referenced by GPIO banks
ARM: stm32: Supply a DTS file for the STM32F469 Discovery board
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
Pull "Part 2 of device tree changes for omaps for v4.6 merge window" from Tony Lindgren:
- A series of GPMC related interrupt changes from
Rogeq Quadros <rogerq@ti.com> to prepare adding interrupt
support to the NAND driver
- Add RTC support for ti81xx
- Correct LogicPD Torpedo mode description
- Add basic support for LG Optimus Black phone in several
patches by Paul Kocialkowski <contact@paulk.fr>
- Change address-cells for dra7 for LPAE
- Add TBCLK for PWMSS on dra7
* tag 'omap-for-v4.6/dt-pt2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (21 commits)
ARM: dts: omap3-sniper: TWL4030 keypad support
Revert "ARM: dts: DRA7: Add dt nodes for PWMSS"
ARM: dts: dm814x: dra62x: Disable wait pin monitoring for NAND
ARM: dts: dm814x: dra62x: Fix NAND device nodes
ARM: dts: DRA7: Add dt nodes for PWMSS
ARM: dts: DRA7: Add TBCLK for PWMSS
ARM: dts: DRA7: change address-cells and size-cells
ARM: dts: omap3-sniper: USB OTG support
ARM: dts: LG Optimus Black codename sniper basic support
ARM: dts: dm3730-torpedo-devkit: Add "Wireless" to model
ARM: dts: Add RTC entry for dm816x
ARM: dts: Add RTC entry for dm814x and dra62x
ARM: dts: omap3: Fix NAND device nodes
ARM: dts: dm8168-evm: ARM: dts: Disable wait pin monitoring for NAND
ARM: dts: dm816x: Fix NAND device nodes
ARM: dts: am335x: Disable wait pin monitoring for NAND
ARM: dts: am335x: Fix NAND device nodes
ARM: dts: am437x: Disable wait pin monitoring for NAND
ARM: dts: am437x: Fix NAND device nodes
ARM: dts: dra7: Remove redundant nand property
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt2
Merge "i.MX device tree updates for 4.6" from Shawn Guo:
- New i.MX6 board support: NXP/Freescale imx6qp boards, Advantech/GE,
Uniwest evi, Engicam IMX6 Q7, Toradex Apalis SoM and Ixora carrier
boards
- Relicense vf610 dts files under GPLv2/X11
- A patch series from Stefan updating Vybrid Colibri board support with
PMU, regulators and other devices enabled
- Correct PWM pinmux for Ventana boards and add more pinmux for GW54xx
- Clean up imx6q-tbs2910 dts file and add SATA PHY configuration
- A series from Russell cleaning up hummingboard dts files
- A series from Lothar updating Ka-Ro i.MX28, i.MX53 and i.MX6 boards
to use better audio codec frequency and display configurations
- Clean up whitespaces in i.MX6UL pinctrl header and add more devices
support for the SoC
- Other random dts updates to enable various devices
* tag 'imx-dt-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (75 commits)
ARM: dts: imx53-qsb: Fix gpio button polarity
ARM: dts: vfxxx: Add DAC node for Vybrid SoC
ARM: dts: imx6q: add missing links between ipu2 and mipi dsi
ARM: dts: imx: Add support for Advantech/GE B850v3
ARM: dts: imx: Add support for Advantech/GE B650v3
ARM: dts: imx: Add support for Advantech/GE B450v3
ARM: dts: imx: Add support for Advantech/GE Bx50v3
ARM: dts: imx: Add Advantech BA-16 Qseven module
of: Add vendor prefix for General Electric Company
of: Add vendor prefix for Advantech Corporation
ARM: dts: imx35.dtsi: change the clock information for usb
ARM: dts: imx25.dtsi: change the clock information for usb
ARM: dts: imx6ul: add kpp support
ARM: dts: imx6ul: add gpmi support
ARM: dts: imx6ul: add lcdif support
ARM: dts: imx6ul: add sai support
ARM: dts: imx6ul: add flexcan support
ARM: dts: imx6ul: add sdma support
ARM: dts: imx6ul: add pwm[1-4] nodes
ARM: dts: imx6ul: disable PWMs by default
...
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David Binderman pointed out that we were doing a full memset()
of the gdb register buffer and then doing a memcpy() to it that
was almost as big. This commit optimizes that by only doing a
memset() of the registers that are intended to be zero.
While making this change I noticed that we were not copying the
link register (LR, number 55) due to a fencepost error in commit
f419e6f63c5a ("arch: tile: kernel: kgdb.c: Use memcpy() instead of
pointer copy one by one"), and I've corrected that as well.
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt
Merge "ARM: EXYNOS: dts for 4.6, 2nd pull" from Krzysztof Kozlowski:
Samsung DeviceTree updates and improvements for v4.6, second round:
1. Split common reboot/poweroff node to separate DTSI.
2. Don't overheat Odroid XU3 by cooling CPU with cpufreq.
* tag 'samsung-dt-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: dts: exynos: Don't overheat the Odroid XU3-Lite on high load
ARM: dts: exynos: Add cooling levels for Exynos5422/5800 CPUs
ARM: dts: exynos: Add cooling levels for Exynos5420 CPUs
ARM: dts: exynos: Move syscon reboot/poweroff to common dtsi
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git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/dt
Merge "Qualcomm ARM Based Device Tree Updates for v4.6" from Andy Gross:
* Add documentation for Kryo
* Add RPMCC node for APQ8064
* Updates for MSM8974
* Add board clocks
* Add support for Nexus7 device
* Fixup pmic reg properties
* Various updates/cleanups for APQ8064 based boards
* tag 'qcom-dt-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: (23 commits)
ARM: dts: ifc6410: add correct aliases to the i2c and spi bus
ARM: dts: apq8064: add i2c6 device node.
ARM: dts: ifc6410: enable cam i2c device
ARM: dts: apq8064: add gsbi4 with i2c node.
ARM: dts: apq8064: add missing i2c2 pinctrl info
ARM: dts: ifc6410: enable spi device on expansion
ARM: dts: apq8064: add spi5 device node.
ARM: dts: apq8064: add i2c sleep pinctrl states.
ARM: dts: apq8064: add pci support in CM QS600
ARM: dts: apq8064: move pinctrls to dedicated dtsi
ARM: dts: qcom: fix i2c lables to be inline with others
dts: msm8974: Add dma channels for blsp2_i2c1 node
dts: msm8974: Add blsp2_bam dma node
ARM: dts: qcom: Remove size elements from pmic reg properties
devicetree: bindings: Document qcom board compatible format
devicetree: Add DTS file to support the Nexus7 2013 (flo) device.
devicetree: qcom-apq8064.dtsi: Add i2c3 address-cells and size-cells values
arm: dts: qcom: Add more board clocks
ARM: dts: qcom: msm8974: Add WCNSS SMP2P node
ARM: dts: qcom: msm8974: Add smsm node
...
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All PCI mmio ranges are dynamically mapped now, so we
can remove the fixed virtual address definitions.
Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Instead of using old GPIO API, let's switch to GPIOD API, which
automatically handles polarity.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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In an invalid randconfig build (fixed by another patch),
I ran across this warning:
arch/arm/include/debug/at91.S:18:0: error: "CONFIG_DEBUG_UART_VIRT" redefined [-Werror]
#define CONFIG_DEBUG_UART_VIRT AT91_IO_P2V(CONFIG_DEBUG_UART_PHYS)
As Russell pointed out, we should never #define a macro starting
with CONFIG_ in a source file, as that is rather confusing.
This renames the macro to avoid the symbol clash.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Russell King <linux@arm.linux.org.uk>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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Add the three leds on the sama5d2 Xplained board with their pinctrl node.
The blue led is positioned with the "heartbeat" trigger.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: add commit message and adapt to newer kernel]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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Add the push button named "PB USER" with code 0x104. Associated pinctrl node is
also added.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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For USB gadget on port A (device mode):
- pin PA31 is configured as an input GPIO which triggers an interrupt when
vbus is detected on USB port A.
- pin PB9 is configured as an output GPIO and set to low level so the
board doesn't supply vbus to USB port A.
For USB host:
- pin PB10 is configured as an output GPIO and is active at high level.
The ohci driver will activate this pin so the board supplies vbus to USB
port B.
- pin PB9 should be configured as an output GPIO and active at high level
to use to USB port A in host mode (conflicts with USB gadget).
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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We validate pstate using PSR_MODE32_BIT, which is part of the
user-provided pstate (and cannot be trusted). Also, we conflate
validation of AArch32 and AArch64 pstate values, making the code
difficult to reason about.
Instead, validate the pstate value based on the associated task. The
task may or may not be current (e.g. when using ptrace), so this must be
passed explicitly by callers. To avoid circular header dependencies via
sched.h, is_compat_task is pulled out of asm/ptrace.h.
To make the code possible to reason about, the AArch64 and AArch32
validation is split into separate functions. Software must respect the
RES0 policy for SPSR bits, and thus the kernel mirrors the hardware
policy (RAZ/WI) for bits as-yet unallocated. When these acquire an
architected meaning writes may be permitted (potentially with additional
validation).
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Without this booting t410 can fail randomly with no output
depending on the .config options chosen. Enabling debug_ll
causes the problem to go away. I narrowed this down to USB
by disabling one module at a time.
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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As virtio-ccw will have dma ops, we can no longer default to the
zPCI ones. Make use of dev_archdata to keep the dma_ops per device.
The pci devices now use that to override the default, and the
default is changed to use the noop ops for everything that does not
specify a device specific one.
To compile without PCI support we will enable HAS_DMA all the time,
via the default config in lib/Kconfig.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Some of the alpha pci noop dma ops are identical to the common ones.
Use them.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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git commit 26f15caaf993 ("s390/cmpxchg: simplify cmpxchg_double")
removed support for cmpxchg_double for two consecutive four byte
values, for which it would generate a cds instruction.
However I forgot to remove the corresponding define in our percpu
header file, which means that this_cpu_cmpxchg_double would now
incorrectly generate a cdsg instruction if being used on a double four
byte location. Therefore remove the percpu define as well.
There is currently no user and therefore no bug fixed with
this. Obviously any such user could and should simply use cmpxchg.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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commit e22cf8ca6f75 ("s390/cpumf: rework program parameter setting
to detect guest samples") requires guest changes to get proper
guest/host. We can do better: We can use the primary asn value,
which is set on all Linux variants to compare this with the host
pp value.
We now have the following cases:
1. Guest using PP
host sample: gpp == 0, asn == hpp --> host
guest sample: gpp != 0 --> guest
2. Guest not using PP
host sample: gpp == 0, asn == hpp --> host
guest sample: gpp == 0, asn != hpp --> guest
As soon as the host no longer sets CR4, we must back out
this heuristics - let's add a comment in switch_to.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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We have two close to identical report_user_fault functions.
Add a parameter to one and get rid of the other one in order
to reduce code duplication.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The double escape character sequence introduced with commit
272fa59ccb4f ("s390/dis: Fix handling of format specifiers") is not
necessary anymore since commit 561e10300269 ("s390/dis: Fix printing
of the register numbers").
Instead this now generates an extra '%' character:
lg %%r1,160(%%r11)
So fix this and basically revert 272fa59ccb4f.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Git commit ab3f285f227fec62868037e9b1b1fd18294a83b8
"KVM: s390/mm: try a cow on read only pages for key ops"
added a fixup_user_fault to set_guest_storage_key force a copy on
write if the page is mapped read-only. This is supposed to fix the
problem of differing storage keys for shared mappings, e.g. the
empty_zero_page.
But if the storage key is set before the pte is mapped the storage
key update is done on the pgste. A later fault will happily map the
shared page with the key from the pgste.
Eventually git commit 2faee8ff9dc6f4bfe46f6d2d110add858140fb20
"s390/mm: prevent and break zero page mappings in case of storage keys"
fixed this problem for the empty_zero_page. The commit makes sure that
guests enabled for storage keys will not use the empty_zero_page at all.
As the call to fixup_user_fault in set_guest_storage_key depends on the
order of the storage key operation vs. the fault that maps the pte
it does not really fix anything. Just remove it.
Reviewed-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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This patch adds the ability to be able to save the VSX registers to the
thread struct without giving up (disabling the facility) next time the
process returns to userspace.
This patch builds on a previous optimisation for the FPU and VEC registers
in the thread copy path to avoid a possibly pointless reload of VSX state.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch adds the ability to be able to save the VEC registers to the
thread struct without giving up (disabling the facility) next time the
process returns to userspace.
This patch builds on a previous optimisation for the FPU registers in the
thread copy path to avoid a possibly pointless reload of VEC state.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch adds the ability to be able to save the FPU registers to the
thread struct without giving up (disabling the facility) next time the
process returns to userspace.
This patch optimises the thread copy path (as a result of a fork() or
clone()) so that the parent thread can return to userspace with hot
registers avoiding a possibly pointless reload of FPU register state.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This prepares for the decoupling of saving {fpu,altivec,vsx} registers and
marking {fpu,altivec,vsx} as being unused by a thread.
Currently giveup_{fpu,altivec,vsx}() does both however optimisations to
task switching can be made if these two operations are decoupled.
save_all() will permit the saving of registers to thread structs and leave
threads MSR with bits enabled.
This patch introduces no functional change.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Currently the FPU, VEC and VSX facilities are lazily loaded. This is not
a problem unless a process is using these facilities.
Modern versions of GCC are very good at automatically vectorising code,
new and modernised workloads make use of floating point and vector
facilities, even the kernel makes use of vectorised memcpy.
All this combined greatly increases the cost of a syscall since the
kernel uses the facilities sometimes even in syscall fast-path making it
increasingly common for a thread to take an *_unavailable exception soon
after a syscall, not to mention potentially taking all three.
The obvious overcompensation to this problem is to simply always load
all the facilities on every exit to userspace. Loading up all FPU, VEC
and VSX registers every time can be expensive and if a workload does
avoid using them, it should not be forced to incur this penalty.
An 8bit counter is used to detect if the registers have been used in the
past and the registers are always loaded until the value wraps to back
to zero.
Several versions of the assembly in entry_64.S were tested:
1. Always calling C.
2. Performing a common case check and then calling C.
3. A complex check in asm.
After some benchmarking it was determined that avoiding C in the common
case is a performance benefit (option 2). The full check in asm (option
3) greatly complicated that codepath for a negligible performance gain
and the trade-off was deemed not worth it.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Move load_vec in the struct to fill an existing hole, reword change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
fixup
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Currently when threads get scheduled off they always giveup the FPU,
Altivec (VMX) and Vector (VSX) units if they were using them. When they are
scheduled back on a fault is then taken to enable each facility and load
registers. As a result explicitly disabling FPU/VMX/VSX has not been
necessary.
Future changes and optimisations remove this mandatory giveup and fault
which could cause calls such as clone() and fork() to copy threads and run
them later with FPU/VMX/VSX enabled but no registers loaded.
This patch starts the process of having MSR_{FP,VEC,VSX} mean that a
threads registers are hot while not having MSR_{FP,VEC,VSX} means that the
registers must be loaded. This allows for a smarter return to userspace.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Commit 8439e62a1561 ("arm64: mm: use bit ops rather than arithmetic in
pa/va translations") changed the boundary check against PAGE_OFFSET from
an arithmetic comparison to a bit test. This means we now silently assume
that PAGE_OFFSET is a power of 2 that divides the kernel virtual address
space into two equal halves. So make that assumption explicit.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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vmx.c writes the TSC_MULTIPLIER field in vmx_vcpu_load, but only when a
vcpu has migrated physical cpus. Record the last value written and
update in vmx_vcpu_load on any change, otherwise a cpu migration must
occur for TSC frequency scaling to take effect.
Cc: stable@vger.kernel.org
Fixes: ff2c3a1803775cc72dc6f624b59554956396b0ee
Signed-off-by: Owen Hofmann <osh@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Returning directly whatever copy_to_user(...) or copy_from_user(...)
returns may not do the right thing if there's a pagefault:
copy_to_user/copy_from_user return the number of bytes not copied in
this case, but ioctls need to return -EFAULT instead.
Fix up kvm on mips to do
return copy_to_user(...)) ? -EFAULT : 0;
and
return copy_from_user(...)) ? -EFAULT : 0;
everywhere.
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM fixes for 4.5-rc7
- Fix ioctl error handling on the timer path
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MAC is connected to a PHY in MII mode.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@gmail.com>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
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These use the standard clock bindings and now we can make some
of the fixed clocks into real clocks.
Note that the clock output names may become optional as we
probably want to eventually use descriptive names, or use
just dynamically generated names as suggested by Tero.
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Now that the AT24 uses the NVMEM framework, replace the
memory_accessor in the setup() callback with nvmem API calls.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into char-misc-testing
Kees writes:
Become maintainer, add hardening tests for use-after-free and atomic wrapping.
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git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-testing
Chanwoo writes:
Update extcon for 4.6
Detailed description for patchset:
1. Add new EXTCON_CHG_USB_SDP type
- SDP (Standard Downstream Port) USB Charging Port
means the charging connector.a
2. Add the VBUS detection by using GPIO on extcon-palmas
- Beaglex15 board uses the extcon-palmas driver
But, beaglex15 board need the GPIO support for VBUS
detection.
3. Fix the minor issue of extcon drivers
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In the final versions of the Porter board (called "PORTER_C") Renesas
decided to get rid of the Maxim Integrated MAX3355 OTG chip and didn't
add any other provision to differ the host/gadget mode, so we'll have to
remove no longer valid "renesas,enable-gpio" property from the HS-USB
device node. Hopefully, the earlier revisions of the board were never
seen in the wild...
Fixes: c794f6a09a25 ("ARM: shmobile: porter: add HS-USB DT support")
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The existing KVM_CREATE_SPAPR_TCE only supports 32bit windows which is not
enough for directly mapped windows as the guest can get more than 4GB.
This adds KVM_CREATE_SPAPR_TCE_64 ioctl and advertises it
via KVM_CAP_SPAPR_TCE_64 capability. The table size is checked against
the locked memory limit.
Since 64bit windows are to support Dynamic DMA windows (DDW), let's add
@bus_offset and @page_shift which are also required by DDW.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This enables userspace view of TCE tables to start from non-zero offset
on a bus. This will be used for huge DMA windows.
This only changes the internal structure, the user interface needs to
change in order to use an offset.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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At the moment the kvmppc_spapr_tce_table struct can only describe
4GB windows and handle fixed size (4K) pages. Dynamic DMA windows
support more so these limits need to be extended.
This replaces window_size (in bytes, 4GB max) with page_shift (32bit)
and size (64bit, in pages).
This should cause no behavioural change as this is changing
the internal structures only - the user interface still only
allows one to create a 32-bit table with 4KiB pages at this stage.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Helge Deller <deller@gmx.de>
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htab_get_table_size() either retrieve the size of the hash page table (HPT)
from the device tree - if the HPT size is determined by firmware - or
uses a heuristic to determine a good size based on RAM size if the kernel
is responsible for allocating the HPT.
To support a PAPR extension allowing resizing of the HPT, we're going to
want the memory size -> HPT size logic elsewhere, so split it out into a
helper function.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Mike Frysinger reported that his ptrace testcase showed strange
behaviour on parisc: It was not possible to avoid a syscall and the
return value of a syscall couldn't be changed.
To modify a syscall number, we were missing to save the new syscall
number to gr20 which is then picked up later in assembly again.
The effect that the return value couldn't be changed is a side-effect of
another bug in the assembly code. When a process is ptraced, userspace
expects each syscall to report entrance and exit of a syscall. If a
syscall number was given which doesn't exist, we jumped to the normal
syscall exit code instead of informing userspace that the (non-existant)
syscall exits. This unexpected behaviour confuses userspace and thus the
bug was misinterpreted as if we can't change the return value.
This patch fixes both problems and was tested on 64bit kernel with
32bit userspace.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: stable@vger.kernel.org # v4.0+
Tested-by: Mike Frysinger <vapier@gentoo.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Here's another round of updates for -next:
* big A-MSDU RX performance improvement (avoid linearize of paged RX)
* rfkill changes: cleanups, documentation, platform properties
* basic PBSS support in cfg80211
* MU-MIMO action frame processing support
* BlockAck reordering & duplicate detection offload support
* various cleanups & little fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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David Binderman reported a style issue in the floppy.h header file:
arch/parisc/include/asm/floppy.h:221: (style) Boolean result is used in bitwise
operation. Clarify expression with parentheses.
Reported-by: David Binderman <dcb314@hotmail.com>
Cc: David Binderman <dcb314@hotmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
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This adds support for the volume and gesture keys, using TWL4030 keypad.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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This reverts commit 5fcc673067a2b577d37f2c5c5439dbb177f7107e.
The binding may need to change pending related hwmod comments,
so reverting as requested by Paul Walmsley <paul@pwsan.com>.
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