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Author SHA1 Message Date
Vineet Gupta
2d7f5c48c0 ARC: move mcip.h into include/soc and adjust the includes
Also remove the dependency on ARCv2, to increase compile coverage for
!ARCV2 builds

Acked-by: Daniel Lezcano <daniel.lezcnao@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta
c33a605dd6 ARC: breakout aux handling into a separate header
ARC timers use aux registers for programming and this paves way for
moving ARC timer drivers into drivers/clocksource

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta
92b0331403 ARC: time: move time_init() out of the driver
to allow future git mv of the driver into drivers/clocksource

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta
044214200b ARC: timer: gfrc, rtc: build under same option (64-bit timers)
The original distinction was done as they were developed at different
times and primarily because they are specific to UP (RTC) and SMP (GFRC).

But given that driver handles that at runtime, (i.e. not allowing
RTC as clocksource in SMP), we can simplify things a bit.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta
ec7cb87bf9 ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists ...
... don't rely on cpuinfo populated in arc boot code. This paves way for
moving this code in drivers/clocksource/

And while at it, convert the WARN() to pr_warn() as sugested by Daniel

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta
2cd690ea6d ARC: timer: gfrc, rtc: deuglify big endian code
A standard "C" shift will be handled appropriately by the compiler
depending on the endian for the build. So we don't need the
explicit distinction in code

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Arnd Bergmann
7b88f1a489 This pull request contains Broadcom ARM64 based SoC Device Tree changes for
4.10, please pull the following:
 
 - Robin updates the Northstart 2 DTS to use the generic IOMMU binding
 
 - Scott renames the Broadcom Northstar 2 binding document to use a standard name
   including the brcm vendor prefix
 
 - Kamal adds the QSPI Device Tree node to the Northstar 2 SoC and updates the
   Northstar 2 SVK reference board DTS file with it enabled.
 
 - Rob adds the Device Tree node for the Broadcom PDC (mailbox) hardware to the
   Northstar 2 SoC
 
 - Jon enables the SDIO1 block and adds proper PCIe PHYs Device Tree nodes to the
   Northstar 2 SoC
 
 - Ray adds required properties NAND controller properties to make NAND work on
   the Northstar 2 SVK board, this was submitted as a 4.9 fixes and is included
   here to resolve DTS file merges
 
 - Andrea removes an incorrect power LED from the Raspberry Pi 3 DTS
 
 - Andreas fixes the compatible string for the BCM2837 (Raspberry Pi 3)
 
 - Eric defines standard pinctrl groups in the BCM2835 GPIO node
 
 - Gerd adds definitions for the pinctrl groups and updates the PWM, I2C and SDHCI nodes
   to use their appropriate pinctrl functions
 
 - Linus adds names for the Raspberry Pi GPIO lines based on the datasheet
 
 - Martin adds the DT binding and nodes for the Raspberry Pi firmware thermal block
 
 - Stefan fixes a few typos with respect to the BCM2835 mailbox binding example and
   Device Tree nodes he also uses the proper DTSI file to define the USB host mode
   for the USB Device Tree nodes
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Merge tag 'arm-soc/for-4.10/devicetree-arm64' of http://github.com/Broadcom/stblinux into next/dt64

Pull "Broadcom devicetree-arm64 changes for 4.10" from Florian Fainelli:

This pull request contains Broadcom ARM64 based SoC Device Tree changes for
4.10, please pull the following:

- Robin updates the Northstart 2 DTS to use the generic IOMMU binding

- Scott renames the Broadcom Northstar 2 binding document to use a standard name
  including the brcm vendor prefix

- Kamal adds the QSPI Device Tree node to the Northstar 2 SoC and updates the
  Northstar 2 SVK reference board DTS file with it enabled.

- Rob adds the Device Tree node for the Broadcom PDC (mailbox) hardware to the
  Northstar 2 SoC

- Jon enables the SDIO1 block and adds proper PCIe PHYs Device Tree nodes to the
  Northstar 2 SoC

- Ray adds required properties NAND controller properties to make NAND work on
  the Northstar 2 SVK board, this was submitted as a 4.9 fixes and is included
  here to resolve DTS file merges

- Andrea removes an incorrect power LED from the Raspberry Pi 3 DTS

- Andreas fixes the compatible string for the BCM2837 (Raspberry Pi 3)

- Eric defines standard pinctrl groups in the BCM2835 GPIO node

- Gerd adds definitions for the pinctrl groups and updates the PWM, I2C and SDHCI nodes
  to use their appropriate pinctrl functions

- Linus adds names for the Raspberry Pi GPIO lines based on the datasheet

- Martin adds the DT binding and nodes for the Raspberry Pi firmware thermal block

- Stefan fixes a few typos with respect to the BCM2835 mailbox binding example and
  Device Tree nodes he also uses the proper DTSI file to define the USB host mode
  for the USB Device Tree nodes

* tag 'arm-soc/for-4.10/devicetree-arm64' of http://github.com/Broadcom/stblinux: (23 commits)
  arm64: dts: NS2: Add PCI PHYs
  arm64: dts: NS2: enable sdio1
  ARM64: dts: bcm2837-rpi-3-b: remove incorrect pwr LED
  ARM64: bcm2835: dts: add thermal node to device-tree of bcm2837
  ARM: bcm2835: Add names for the Raspberry Pi GPIO lines
  ARM: bcm2835: dts: add thermal node to device-tree of bcm283x
  dt: bindings: add thermal device driver for bcm2835
  arm64: dts: Add Broadcom Northstar2 device tree entries for PDC driver.
  ARM: dts: bcm283x: fix typo in mailbox address
  DT: binding: bcm2835-mbox: fix address typo in example
  ARM64: dts: bcm2835: Fix bcm2837 compatible string
  arm64: dts: Update Broadcom NS2 to generic IOMMU binding
  arm64: dts: Updated NAND DT properties for NS2 SVK
  arm64: dts: rename ns2.txt to brcm,ns2.txt
  ARM64: dts: Add QSPI Device Tree node for NS2
  ARM64: dts: bcm283x: Use dtsi for USB host mode
  ARM: dts: bcm283x: drop alt3 from &gpio
  ARM: dts: bcm283x: add pinctrl group to &sdhci, drop pins from &gpio
  ARM: dts: bcm283x: add pinctrl group to &i2c1, drop pins from &gpio
  ARM: dts: bcm283x: add pinctrl group to &i2c0, drop pins from &gpio
  ...
2016-11-30 17:57:26 +01:00
Arnd Bergmann
bb986384d1 This pull request contains Broadcom ARM-based SoC Device Tree changes for 4.10,
please pull the following:
 
 - Rafal adds support for the Netgear R8500 routers, adds basic support
   for the Tenda AC9 router which uses the new BCM53573 SoC (single core Cortex
   A7). He also enables the UART on the Netgear R8000 and restructures the
   include files a bit for the BCM47094 SoC, finally he adds USB 3.0 PHY nodes
   which enables USB 3.0 on BCM5301X devices that support it. Finally he adds
   support for the TP-LINK Archer C9 V1 router.
 
 - Kamal adds support for the QSPI controller on the Northstar Plus SoCs and updates
   the bcm958625k reference board to have it enabled
 
 - Dan adds support for the Luxul XAP-1510 (using a BCM4708) and XWR-3100 (using
   a BCM47094)
 
 - Scott fixes the pinctrl names in the Cygnus DTS files
 
 - Jonathan enables the Broadcom iProc mailbox controller for Broadcom Cygnus/iProc
   SoCs, he adds interrupt support for the GPIO CRMU hardware block and finally adds
   the node for the OTP controller found on Cygnus SoCs
 
 - Dhananjay enables the GPIO B controller on Norstarh Plus SoCs
 
 - Eric defines standard pinctrl groups in the BCM2835 GPIO node
 
 - Gerd adds definitions for the pinctrl groups and updates the PWM, I2C and SDHCI nodes
   to use their appropriate pinctrl functions
 
 - Linus adds names for the Raspberry Pi GPIO lines based on the datasheet
 
 - Martin adds the DT binding and nodes for the Raspberry Pi firmware thermal block
 
 - Stefan fixes a few typos with respect to the BCM2835 mailbox binding example and
   Device Tree nodes he also fixes the Raspberry Pi GPIO lines names and finally
   adds names for the Raspberry Zero GPIO lines
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Merge tag 'arm-soc/for-4.10/devicetree' of http://github.com/Broadcom/stblinux into next/dt

Pull "Broadcom devicetree changes for 4.10" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoC Device Tree changes for 4.10,
please pull the following:

- Rafal adds support for the Netgear R8500 routers, adds basic support
  for the Tenda AC9 router which uses the new BCM53573 SoC (single core Cortex
  A7). He also enables the UART on the Netgear R8000 and restructures the
  include files a bit for the BCM47094 SoC, finally he adds USB 3.0 PHY nodes
  which enables USB 3.0 on BCM5301X devices that support it. Finally he adds
  support for the TP-LINK Archer C9 V1 router.

- Kamal adds support for the QSPI controller on the Northstar Plus SoCs and updates
  the bcm958625k reference board to have it enabled

- Dan adds support for the Luxul XAP-1510 (using a BCM4708) and XWR-3100 (using
  a BCM47094)

- Scott fixes the pinctrl names in the Cygnus DTS files

- Jonathan enables the Broadcom iProc mailbox controller for Broadcom Cygnus/iProc
  SoCs, he adds interrupt support for the GPIO CRMU hardware block and finally adds
  the node for the OTP controller found on Cygnus SoCs

- Dhananjay enables the GPIO B controller on Norstarh Plus SoCs

- Eric defines standard pinctrl groups in the BCM2835 GPIO node

- Gerd adds definitions for the pinctrl groups and updates the PWM, I2C and SDHCI nodes
  to use their appropriate pinctrl functions

- Linus adds names for the Raspberry Pi GPIO lines based on the datasheet

- Martin adds the DT binding and nodes for the Raspberry Pi firmware thermal block

- Stefan fixes a few typos with respect to the BCM2835 mailbox binding example and
  Device Tree nodes he also fixes the Raspberry Pi GPIO lines names and finally
  adds names for the Raspberry Zero GPIO lines

* tag 'arm-soc/for-4.10/devicetree' of http://github.com/Broadcom/stblinux: (29 commits)
  ARM: bcm2835: Add names for the RPi Zero GPIO lines
  ARM: bcm2835: Fix names for the Raspberry Pi GPIO lines
  ARM: dts: enable GPIO-b for Broadcom NSP
  ARM: BCM5301X: Add DT for TP-LINK Archer C9 V1
  ARM: dts: Add node for Broadcom OTP controller driver
  ARM: dts: Enable interrupt support for cygnus crmu gpio driver
  ARM: dts: Enable Broadcom iProc mailbox controller
  ARM: bcm2835: Add names for the Raspberry Pi GPIO lines
  ARM: bcm2835: dts: add thermal node to device-tree of bcm283x
  dt: bindings: add thermal device driver for bcm2835
  ARM: dts: bcm283x: fix typo in mailbox address
  DT: binding: bcm2835-mbox: fix address typo in example
  ARM: dts: cygnus: fix naming of pinctrl node
  ARM: BCM53573: Specify PMU and its ILP clock in the DT
  ARM: BCM5301X: Add DT for Luxul XWR-3100
  ARM: BCM5301X: Add DT for Luxul XAP-1510
  ARM: BCM5301X: Specify USB 3.0 PHY in DT
  ARM: BCM5301X: Enable UART on Netgear R8000
  ARM: BCM5301X: Add separated DTS include file for BCM47094
  ARM: dts: NSP: Add QSPI nodes to NSPI and bcm958625k DTSes
  ...
2016-11-30 17:53:03 +01:00
Arnd Bergmann
9442091ed0 This pull request contains Broadcom ARM-based SoC changes for 4.10, please pull
the following:
 
 - Rafal adds back the abort handler hook on BCM5301x which is required to silence
   errors forwared from the PCIe controller that cannot be silenced at the PCIe RC level
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Merge tag 'arm-soc/for-4.10/soc' of http://github.com/Broadcom/stblinux into next/soc

Merge "Broadcom soc changes for 4.10" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoC changes for 4.10, please pull
the following:

- Rafal adds back the abort handler hook on BCM5301x which is required to silence
  errors forwared from the PCIe controller that cannot be silenced at the PCIe RC level

* tag 'arm-soc/for-4.10/soc' of http://github.com/Broadcom/stblinux:
  ARM: BCM5301X: Add back handler ignoring external imprecise aborts
2016-11-30 17:49:17 +01:00
Arnd Bergmann
f21b65881c arm64: tegra: Device tree changes for v4.10-rc1
This adds initial support for Tegra186, the P3310 processor module as
 well as the P2771 development board. Not much is functional, but there
 is enough to boot to an initial ramdisk with debug serial output.
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Merge tag 'tegra-for-4.10-arm64-dt-numeric-ids' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/dt64

Pull "arm64: tegra: Device tree changes for v4.10-rc1" from Thierry Reding:

This adds initial support for Tegra186, the P3310 processor module as
well as the P2771 development board. Not much is functional, but there
is enough to boot to an initial ramdisk with debug serial output.

* tag 'tegra-for-4.10-arm64-dt-numeric-ids' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  arm64: tegra: Add NVIDIA P2771 board support
  arm64: tegra: Enable PSCI on P3310
  arm64: tegra: Add NVIDIA P3310 processor module support
  arm64: tegra: Add GPIO controllers on Tegra186
  arm64: tegra: Add SDHCI controllers on Tegra186
  arm64: tegra: Add I2C controllers on Tegra186
  arm64: tegra: Add serial ports on Tegra186
  arm64: tegra: Add CPU nodes for Tegra186
  arm64: tegra: Add Tegra186 support
2016-11-30 17:07:13 +01:00
Arnd Bergmann
44b736d0a0 SoCFPGA update for v4.10
- Fixup spelling error
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Merge tag 'socfpga_updates_for_v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/fixes-non-critical

Pull "SoCFPGA update for v4.10" from Dinh Nguyen:

- Fixup spelling error

* tag 'socfpga_updates_for_v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga: fix spelling mistake in error message
2016-11-30 16:58:25 +01:00
Arnd Bergmann
82076f8112 SoCFPGA DTS update for v4.10, part 3
- Fine tune L2 cache configuration
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Merge tag 'socfpga_dts_for_v4.10_part_3' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/dt

Merge "SoCFPGA DTS update for v4.10, part 3" from Dinh Nguyen:

- Fine tune L2 cache configuration

* tag 'socfpga_dts_for_v4.10_part_3' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: dts: socfpga: fine-tune L2 cache configuration
2016-11-30 16:57:12 +01:00
Geert Uytterhoeven
8879f9ffab arm64: defconfig: Do not lower CONFIG_LOG_BUF_SHIFT
The default value of 17 for CONFIG_LOG_BUF_SHIFT is much more suitable
than 14. The latter easily leads to lost kernel messages on systems with
only one CPU core.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2016-11-30 16:56:15 +01:00
Arnd Bergmann
db30a7ae1d Second Round of Renesas ARM64 Based SoC DT Updates for v4.10
Enhancements:
 * Add device nodes for PRR
 * Add m3ulcb board
 * Enable I2C on r8a7796/salvator-x board
 * Enable SDHI0 on h3ulcb board
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Merge tag 'renesas-arm64-dt2-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt64

Pull "Second Round of Renesas ARM64 Based SoC DT Updates for v4.10" from Simon Horman:

Enhancements:
* Add device nodes for PRR
* Add m3ulcb board
* Enable I2C on r8a7796/salvator-x board
* Enable SDHI0 on h3ulcb board

* tag 'renesas-arm64-dt2-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: dts: r8a7796: Add device node for PRR
  arm64: dts: r8a7795: Add device node for PRR
  arm64: dts: h3ulcb: rename SDHI0 pins
  arm64: dts: h3ulcb: enable SDHI2
  arm64: dts: m3ulcb: enable SDHI2
  arm64: dts: m3ulcb: enable SDHI0
  arm64: dts: m3ulcb: enable WDT
  arm64: dts: m3ulcb: enable EXTALR clk
  arm64: dts: m3ulcb: enable GPIO keys
  arm64: dts: m3ulcb: enable GPIO leds
  arm64: dts: m3ulcb: enable SCIF clk and pins
  arm64: dts: m3ulcb: initial device tree
  arm64: dts: m3ulcb: add M3ULCB board DT bindings
  arm64: dts: h3ulcb: update header
  arm64: dts: h3ulcb: update documentation with official board name
  arm64: dts: r8a7796: salvator-x: enable I2C
  arm64: dts: r8a7796: Enable I2C DMA
  arm64: dts: r8a7796: add I2C support
2016-11-30 16:51:07 +01:00
Arnd Bergmann
bc28ba81db Renesas ARM Based SoC Match Updates for v4.10
* Identify SoC and register with the SoC bus
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Merge tag 'renesas-soc-match-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers

Merge "Renesas ARM Based SoC Match Updates for v4.10" from Simon Horman:

* Identify SoC and register with the SoC bus

* tag 'renesas-soc-match-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  soc: renesas: Identify SoC and register with the SoC bus
  ARM: shmobile: Document DT bindings for Product Register

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-11-30 16:49:22 +01:00
Arnd Bergmann
9de194ff11 Second Round of Renesas ARM Based SoC DT Updates for v4.10
Enhancements:
 * Add device nodes for PRR
 * Add r8a7745 SoC and sk-rzg1e board
 * Add r8a7743 SoC and sk-rzg1m board
 * Enable SDR-104 and I2C demuxer on alt, koelsch and lager boards
 
 Corrections:
 * Use SYSC "always-on" PM Domain for sound on r8a7794 SoC
 * Correct hsusb parent clock on r8a7794 SoC
 * Correct PFC names for DU on alt board
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Merge tag 'renesas-dt2-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt

Pull "Second Round of Renesas ARM Based SoC DT Updates for v4.10" from Simon Horman:

Enhancements:
* Add device nodes for PRR
* Add r8a7745 SoC and sk-rzg1e board
* Add r8a7743 SoC and sk-rzg1m board
* Enable SDR-104 and I2C demuxer on alt, koelsch and lager boards

Corrections:
* Use SYSC "always-on" PM Domain for sound on r8a7794 SoC
* Correct hsusb parent clock on r8a7794 SoC
* Correct PFC names for DU on alt board

* tag 'renesas-dt2-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (33 commits)
  ARM: dts: r8a7794: Add device node for PRR
  ARM: dts: r8a7793: Add device node for PRR
  ARM: dts: r8a7792: Add device node for PRR
  ARM: dts: r8a7791: Add device node for PRR
  ARM: dts: r8a7790: Add device node for PRR
  ARM: dts: r8a7779: Add device node for PRR
  ARM: dts: r8a73a4: Add device node for PRR
  ARM: dts: sk-rzg1e: add Ether support
  ARM: dts: sk-rzg1e: initial device tree
  ARM: dts: r8a7745: add IRQC support
  ARM: dts: r8a7745: add Ether support
  ARM: dts: r8a7745: add [H]SCIF{|A|B} support
  ARM: dts: r8a7745: add SYS-DMAC support
  ARM: dts: r8a7745: initial SoC device tree
  ARM: dts: sk-rzg1m: add Ether support
  ARM: dts: sk-rzg1m: initial device tree
  ARM: dts: r8a7743: add IRQC support
  ARM: dts: r8a7743: add Ether support
  ARM: dts: r8a7743: add [H]SCIF{A|B} support
  ARM: dts: r8a7743: add SYS-DMAC support
  ...
2016-11-30 16:44:12 +01:00
Francis Yan
1c885808e4 tcp: SOF_TIMESTAMPING_OPT_STATS option for SO_TIMESTAMPING
This patch exports the sender chronograph stats via the socket
SO_TIMESTAMPING channel. Currently we can instrument how long a
particular application unit of data was queued in TCP by tracking
SOF_TIMESTAMPING_TX_SOFTWARE and SOF_TIMESTAMPING_TX_SCHED. Having
these sender chronograph stats exported simultaneously along with
these timestamps allow further breaking down the various sender
limitation.  For example, a video server can tell if a particular
chunk of video on a connection takes a long time to deliver because
TCP was experiencing small receive window. It is not possible to
tell before this patch without packet traces.

To prepare these stats, the user needs to set
SOF_TIMESTAMPING_OPT_STATS and SOF_TIMESTAMPING_OPT_TSONLY flags
while requesting other SOF_TIMESTAMPING TX timestamps. When the
timestamps are available in the error queue, the stats are returned
in a separate control message of type SCM_TIMESTAMPING_OPT_STATS,
in a list of TLVs (struct nlattr) of types: TCP_NLA_BUSY_TIME,
TCP_NLA_RWND_LIMITED, TCP_NLA_SNDBUF_LIMITED. Unit is microsecond.

Signed-off-by: Francis Yan <francisyyan@gmail.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 10:04:25 -05:00
Arnd Bergmann
31866927ca Some fixes for device-tree patches already queued.
- Fix SD card detect polarity
 - Prevent Ethernet from picking a random mac address
 - Fix error messages on platforms which dont use
   bus master and emif priority settings.
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Merge tag 'davinci-for-v4.10/dt-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/dt

Pull "DaVinci DT updates for v4.10 (part 3)" from Sekhar Nori:

Some fixes for device-tree patches already queued.
- Fix SD card detect polarity
- Prevent Ethernet from picking a random mac address
- Fix error messages on platforms which dont use
  bus master and emif priority settings.

* tag 'davinci-for-v4.10/dt-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: dts: da850: enable memctrl and mstpri nodes per board
  ARM: dts: da850-lcdk: Add ethernet0 alias to DT
  ARM: dts: da850-lcdk: fix mmc card detect polarity
2016-11-30 15:21:19 +01:00
Arnd Bergmann
aea09e5841 Adds device tree nodes enabling DDR controller
and bus master priority settings needed for
 stable LCDC operation on DA850.
 
 Also adds support for MUSB device on DA850
 providing USB OTG support.
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Merge tag 'davinci-for-v4.10/dt-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/dt

Pull "DaVinci DT updates for v4.10 (part 2)" from Sekhar Nori:

Adds device tree nodes enabling DDR controller
and bus master priority settings needed for
stable LCDC operation on DA850.

Also adds support for MUSB device on DA850
providing USB OTG support.

* tag 'davinci-for-v4.10/dt-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: dts: da850-lcdk: Enable the usb otg device node
  ARM: dts: da850: Add the usb otg device node
  ARM: dts: da850: add the mstpri and ddrctl nodes
2016-11-30 15:18:48 +01:00
Arnd Bergmann
f98121f3ef arm64: dts: fix build errors from missing dependencies
Two branches were incorrectly sent without having the necessary
header file changes. Rather than back those out now, I'm replacing
the symbolic names for the clks and resets with the numeric
values to get 'make allmodconfig dtbs' back to work.

After the header file changes are merged, we can revert this
patch.

Fixes: 6bc37fa ("arm64: dts: add Allwinner A64 SoC .dtsi")
Fixes: 50784e6 ("dts: arm64: db820c: add pmic pins specific dts file")
Acked-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-11-30 15:15:16 +01:00
Arnd Bergmann
c2d3925456 A patch enabling USB OHCI support in davinci
defconfig.
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Merge tag 'davinci-for-v4.10/defconfig-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/defconfig

Pull "DaVinci defconfig updates for v4.10 (part 3)" from Sekhar Nori:

Enables newly introduced DDR controller and
master priority setting drivers in kernel.

Also, update defconfig to boot latest systemd
based filesystems on DA850.

A patch enabling USB OHCI support in davinci
defconfig.

* tag 'davinci-for-v4.10/defconfig-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci_all_defconfig: Enable OHCI as module
  ARM: davinci_all_defconfig: add missing options for systemd
  ARM: davinci_all_defconfig: enable the mstpri and ddrctl drivers
2016-11-30 14:55:14 +01:00
Arnd Bergmann
196249beab mach-davinci SoC support updates to adjust
USB ohci device name to that used by drivers
 and update of various board files to use gpio
 descriptor API used by MMC subsystem for card
 detect and write-protect detection.
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Merge tag 'davinci-for-v4.10/soc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc

Pull "DaVinci SoC updates for v4.10 (part 3)" from Sekhar Nori:

mach-davinci SoC support updates to adjust
USB ohci device name to that used by drivers
and update of various board files to use gpio
descriptor API used by MMC subsystem for card
detect and write-protect detection.

* tag 'davinci-for-v4.10/soc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: da830-evm: use gpio descriptor for mmc pins
  ARM: davinci: da850-evm: use gpio descriptor for mmc pins
  ARM: davinci: hawk: use gpio descriptor for mmc pins
  ARM: davinci: da8xx: Fix ohci device name
2016-11-30 14:48:30 +01:00
Arnd Bergmann
c0db16b815 Adds suspend-to-RAM support for DT boot mode
on DA850.
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Merge tag 'davinci-for-v4.10/soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc

Pull "DaVinci SoC updates for v4.10 (part 2)" from Sekhar Nori:

Adds suspend-to-RAM support for DT boot mode
on DA850.

* tag 'davinci-for-v4.10/soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: PM: support da8xx DT platforms
2016-11-30 14:47:37 +01:00
Arnd Bergmann
e264ae280c mach-davinci cleanup to make it easy to add PM support
for DT-boot.
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Merge tag 'davinci-for-v4.10/cleanup-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc

Pull DaVinci cleanup for v4.10 from Sekhar Nori:

mach-davinci cleanup to make it easy to add PM support
for DT-boot.

* tag 'davinci-for-v4.10/cleanup-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: PM: fix build when da850 not compiled in
  ARM: davinci: PM: cleanup: remove references to pdata
  ARM: davinci: PM: rework init, remove platform device
2016-11-30 14:45:31 +01:00
Geoff Levand
6dff5b6705 powerpc/ps3: Fix system hang with GCC 5 builds
GCC 5 generates different code for this bootwrapper null check that
causes the PS3 to hang very early in its bootup. This check is of
limited value, so just get rid of it.

Cc: stable@vger.kernel.org
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:19:59 +11:00
Michael Ellerman
76ffb57850 powerpc/prom: Switch to using structs for ibm_architecture_vec
Now that we've defined structures to describe each of the client
architecture vectors, we can use those to construct the value we pass to
firmware.

This avoids the tricks we previously played with the W() macro, allows
us to properly endian annotate fields, and should help to avoid bugs
introduced by failing to have the correct number of zero pad bytes
between fields.

It also means we can avoid hard coding IBM_ARCH_VEC_NRCORES_OFFSET in
order to update the max_cpus value and instead just set it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:19:59 +11:00
Michael Ellerman
d03d1d65b5 powerpc/prom: Define structs for client architecture vectors
The "client architecture vectors" are a series of structures we pass to
firmware to define various things, such as what processors we support
and many other options.

Each structure is entirely different so we have to define a different
struct for each one, but that's OK.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:19:59 +11:00
Nicholas Piggin
53ce299615 powerpc/pseries: add definitions for new H_SIGNAL_SYS_RESET hcall
This has not made its way to a PAPR release yet, but we have an hcall
number assigned.

  H_SIGNAL_SYS_RESET = 0x380

  Syntax:
    hcall(uint64 H_SIGNAL_SYS_RESET, int64 target);

  Generate a system reset NMI on the threads indicated by target.

  Values for target:
    -1 = target all online threads including the caller
    -2 = target all online threads except for the caller
    All other negative values: reserved
    Positive values: The thread to be targeted, obtained from the value
    of the "ibm,ppc-interrupt-server#s" property of the CPU in the OF
    device tree.

  Semantics:
  - Invalid target: return H_Parameter.
  - Otherwise: Generate a system reset NMI on target thread(s),
    return H_Success.

This will be used by crash/debug code to get stuck CPUs into a known
state.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:19:59 +11:00
Thiago Jung Bauermann
500c7ab1a9 powerpc: Enable CONFIG_KEXEC_FILE in powerpc server defconfigs.
Enable CONFIG_KEXEC_FILE in powernv_defconfig, ppc64_defconfig and
pseries_defconfig.

It depends on CONFIG_CRYPTO_SHA256=y, so add that as well.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:15:36 +11:00
Thiago Jung Bauermann
80f60e509a powerpc/kexec: Enable kexec_file_load() syscall
Define the Kconfig symbol so that the kexec_file_load() code can be
built, and wire up the syscall so that it can be called.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:15:27 +11:00
Thiago Jung Bauermann
0d97631392 powerpc: Add purgatory for kexec_file_load() implementation.
This purgatory implementation is based on the versions from kexec-tools
and kexec-lite, with additional changes.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:15:26 +11:00
Thiago Jung Bauermann
a0458284f0 powerpc: Add support code for kexec_file_load()
This patch adds the support code needed for implementing
kexec_file_load() on powerpc.

This consists of functions to load the ELF kernel, either big or little
endian, and setup the purgatory enviroment which switches from the first
kernel to the second kernel.

None of this code is built yet, as it depends on CONFIG_KEXEC_FILE which
we have not yet defined. Although we could define CONFIG_KEXEC_FILE in
this patch, we'd then have a window in history where the kconfig symbol
is present but the syscall is not, which would be awkward.

Signed-off-by: Josh Sklar <sklar@linux.vnet.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:15:25 +11:00
Thiago Jung Bauermann
da6658859b powerpc: Change places using CONFIG_KEXEC to use CONFIG_KEXEC_CORE instead.
Commit 2965faa5e0 ("kexec: split kexec_load syscall from kexec core
code") introduced CONFIG_KEXEC_CORE so that CONFIG_KEXEC means whether
the kexec_load system call should be compiled-in and CONFIG_KEXEC_FILE
means whether the kexec_file_load system call should be compiled-in.
These options can be set independently from each other.

Since until now powerpc only supported kexec_load, CONFIG_KEXEC and
CONFIG_KEXEC_CORE were synonyms. That is not the case anymore, so we
need to make a distinction. Almost all places where CONFIG_KEXEC was
being used should be using CONFIG_KEXEC_CORE instead, since
kexec_file_load also needs that code compiled in.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:15:11 +11:00
Thiago Jung Bauermann
ec2b9bfaac kexec_file: Change kexec_add_buffer to take kexec_buf as argument.
This is done to simplify the kexec_add_buffer argument list.
Adapt all callers to set up a kexec_buf to pass to kexec_add_buffer.

In addition, change the type of kexec_buf.buffer from char * to void *.
There is no particular reason for it to be a char *, and the change
allows us to get rid of 3 existing casts to char * in the code.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 23:14:59 +11:00
Ard Biesheuvel
81126d1a8b crypto: arm/aesbs - fix brokenness after skcipher conversion
The CBC encryption routine should use the encryption round keys, not
the decryption round keys.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 20:01:51 +08:00
Ard Biesheuvel
b3e1e0cbd9 crypto: arm64/aes-ce-ctr - fix skcipher conversion
Fix a missing statement that got lost in the skcipher conversion of
the CTR transform.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 20:01:44 +08:00
Ard Biesheuvel
7f329c1742 crypto: arm/aes-ce - fix broken monolithic build
When building the arm64 kernel with both CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
and CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y configured, the build breaks with
the following error:

arch/arm64/crypto/aes-neon-blk.o:(.bss+0x0): multiple definition of `aes_simd_algs'
arch/arm64/crypto/aes-ce-blk.o:(.bss+0x0): first defined here

Fix this by making aes_simd_algs 'static'.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 20:01:41 +08:00
Herbert Xu
6fdf436fd8 crypto: arm/aes - Add missing SIMD select for aesbs
This patch adds one more missing SIMD select for AES_ARM_BS.  It
also changes selects on ALGAPI to BLKCIPHER.

Fixes: 211f41af53 ("crypto: aesbs - Convert to skcipher")
Reported-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 20:01:40 +08:00
Thomas Gleixner
b836554386 x86/tsc: Fix broken CONFIG_X86_TSC=n build
Add the missing return statement to the inline stub
tsc_store_and_check_tsc_adjust() and add the other stubs to make a
SMP=y,TSC=n build happy.

While at it, remove the unused variable from the UP variant of
tsc_store_and_check_tsc_adjust().

Fixes: commit ba75fb646931 ("x86/tsc: Sync test only for the first cpu in a package")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-30 09:44:52 +01:00
Ingo Molnar
0a21fc1214 sched/x86: Make CONFIG_SCHED_MC_PRIO=y easier to enable
Right now CONFIG_SCHED_MC_PRIO has X86_INTEL_PSTATE as a dependency,
which is not enabled by default and which hides the CONFIG_SCHED_MC_PRIO
hardware-enabling feature.

Select X86_INTEL_PSTATE instead, plus its dependency (CPU_FREQ), if the
user enables CONFIG_SCHED_MC_PRIO=y.

(Also align the CONFIG_SCHED_MC_PRIO Kconfig help text in standard style.)

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: bp@suse.de
Cc: jolsa@redhat.com
Cc: linux-acpi@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: rjw@rjwysocki.net
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-30 08:36:10 +01:00
Tim Chen
de966cf4a4 sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO
Rename CONFIG_SCHED_ITMT for Intel Turbo Boost Max Technology 3.0
to CONFIG_SCHED_MC_PRIO.  This makes the configuration extensible
in future to other architectures that wish to similarly establish
CPU core priorities support in the scheduler.

The description in Kconfig is updated to reflect this change with
added details for better clarity.  The configuration is explicitly
default-y, to enable the feature on CPUs that have this feature.

It has no effect on non-TBM3 CPUs.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@suse.de
Cc: jolsa@redhat.com
Cc: linux-acpi@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/2b2ee29d93e3f162922d72d0165a1405864fbb23.1480444902.git.tim.c.chen@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-30 08:27:08 +01:00
Balbir Singh
0ab5171b89 powerpc/mm: Fix no execute fault handling on pre-POWER5
Aneesh/Ben reported that the change to do_page_fault() we made in commit
1d18ad0268 ("powerpc/mm: Detect instruction fetch denied and report")
needs to handle the case where CPU_FTR_COHERENT_ICACHE is missing but we
have CPU_FTR_NOEXECUTE. In those cases the check added for
SRR1_ISI_N_OR_G might trigger a false positive.

This patch adds a check for CPU_FTR_COHERENT_ICACHE in addition to the
MSR value.

Fixes: 1d18ad0268 ("powerpc/mm: Detect instruction fetch denied and report")
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-30 17:19:01 +11:00
Dave Airlie
35838b470a Merge tag 'drm-intel-next-2016-11-21' of git://anongit.freedesktop.org/git/drm-intel into drm-next
Final 4.10 updates:

- fine-tune fb flushing and tracking (Chris Wilson)
- refactor state check dumper code for more conciseness (Tvrtko)
- roll out dev_priv all over the place (Tvrkto)
- finally remove __i915__ magic macro (Tvrtko)
- more gvt bugfixes (Zhenyu&team)
- better opregion CADL handling (Jani)
- refactor/clean up wm programming (Maarten)
- gpu scheduler + priority boosting for flips as first user (Chris
  Wilson)
- make fbc use more atomic (Paulo)
- initial kvm-gvt framework, but not yet complete (Zhenyu&team)

* tag 'drm-intel-next-2016-11-21' of git://anongit.freedesktop.org/git/drm-intel: (127 commits)
  drm/i915: Update DRIVER_DATE to 20161121
  drm/i915: Skip final clflush if LLC is coherent
  drm/i915: Always flush the dirty CPU cache when pinning the scanout
  drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error
  drm/i915: Check that each request phase is completed before retiring
  drm/i915: i915_pages_create_for_stolen should return err ptr
  drm/i915: Enable support for nonblocking modeset
  drm/i915: Be more careful to drop the GT wakeref
  drm/i915: Move frontbuffer CS write tracking from ggtt vma to object
  drm/i915: Only dump dp_m2_n2 configuration when drrs is used
  drm/i915: don't leak global_timeline
  drm/i915: add i915_address_space_fini
  drm/i915: Add a few more sanity checks for stolen handling
  drm/i915: Waterproof verification of gen9 forcewake table ranges
  drm/i915: Introduce enableddisabled helper
  drm/i915: Only dump possible panel fitter config for the platform
  drm/i915: Only dump scaler config where supported
  drm/i915: Compact a few pipe config debug lines
  drm/i915: Don't log pipe config kernel pointer and duplicated pipe name
  drm/i915: Dump FDI config only where applicable
  ...
2016-11-30 14:21:35 +10:00
Eugeniy Paltsev
bd2c6636cc dmaengine: DW DMAC: add multi-block property to device tree
Several versions of DW DMAC have multi block transfers hardware
support. Hardware support of multi block transfers is disabled
by default if we use DT to configure DMAC and software emulation
of multi block transfers used instead.
Add multi-block property, so it is possible to enable hardware
multi block transfers (if present) via DT.

Switch from per device is_nollp variable to multi_block array
to be able enable/disable multi block transfers separately per
channel.

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:57:50 +05:30
Brian Norris
0989b0909c This pull request contains the following notable changes:
- new tango NAND controller driver
 - new ox820 NAND controller driver
 - addition of a new full-ID entry in the nand_ids table
 - rework of the s3c240 driver to support DT
 - extension of the nand_sdr_timings to expose tCCS, tPROG and tR
 - addition of a new flag to ask the core to wait for tCCS when sending
   a RNDIN/RNDOUT command
 - addition of a new flag to ask the core to let the controller driver
   send the READ/PROGPAGE command
 
 This pull request also contains minor fixes/cleanup/cosmetic changes:
 - properly support 512 ECC step size in the sunxi driver
 - improve the error messages in the pxa probe path
 - fix module autoload in the omap2 driver
 - cleanup of several nand drivers to return nand_scan{_tail}() error
   code instead of returning -EIO
 - various cleanups in the denali driver
 - cleanups in the ooblayout handling (MTD core)
 - fix an error check in nandsim
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Merge tag 'nand/for-4.10' of github.com:linux-nand/linux

From Boris Brezillon:

"""
This pull request contains the following notable changes:
- new tango NAND controller driver
- new ox820 NAND controller driver
- addition of a new full-ID entry in the nand_ids table
- rework of the s3c240 driver to support DT
- extension of the nand_sdr_timings to expose tCCS, tPROG and tR
- addition of a new flag to ask the core to wait for tCCS when sending
  a RNDIN/RNDOUT command
- addition of a new flag to ask the core to let the controller driver
  send the READ/PROGPAGE command

This pull request also contains minor fixes/cleanup/cosmetic changes:
- properly support 512 ECC step size in the sunxi driver
- improve the error messages in the pxa probe path
- fix module autoload in the omap2 driver
- cleanup of several nand drivers to return nand_scan{_tail}() error
  code instead of returning -EIO
- various cleanups in the denali driver
- cleanups in the ooblayout handling (MTD core)
- fix an error check in nandsim
"""
2016-11-29 18:28:30 -08:00
Thomas Gleixner
cc4db26899 x86/tsc: Try to adjust TSC if sync test fails
If the first CPU of a package comes online, it is necessary to test whether
the TSC is in sync with a CPU on some other package. When a deviation is
observed (time going backwards between the two CPUs) the TSC is marked
unstable, which is a problem on large machines as they have to fall back to
the HPET clocksource, which is insanely slow.

It has been attempted to compensate the TSC by adding the offset to the TSC
and writing it back some time ago, but this never was merged because it did
not turn out to be stable, especially not on older systems.

Modern systems have become more stable in that regard and the TSC_ADJUST
MSR allows us to compensate for the time deviation in a sane way. If it's
available allow up to three synchronization runs and if a time warp is
detected the starting CPU can compensate the time warp via the TSC_ADJUST
MSR and retry. If the third run still shows a deviation or when random time
warps are detected the test terminally fails.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20161119134018.048237517@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-29 19:23:18 +01:00
Thomas Gleixner
76d3b85158 x86/tsc: Prepare warp test for TSC adjustment
To allow TSC compensation cross nodes its necessary to know in which
direction the TSC warp was observed. Return the maximum observed value on
the calling CPU so the caller can determine the direction later.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20161119134017.970859287@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-29 19:23:18 +01:00
Thomas Gleixner
4c5e3c6375 x86/tsc: Move sync cleanup to a safe place
Cleaning up the stop marker on the control CPU is wrong when we want to add
retry support. Move the cleanup to the starting CPU.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20161119134017.892095627@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-29 19:23:18 +01:00
Thomas Gleixner
a36f513681 x86/tsc: Sync test only for the first cpu in a package
If the TSC_ADJUST MSR is available all CPUs in a package are forced to the
same value. So TSCs cannot be out of sync when the first CPU in the package
was in sync.

That allows to skip the sync test for all CPUs except the first starting
CPU in a package.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20161119134017.809901363@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-29 19:23:17 +01:00
Thomas Gleixner
1d0095feea x86/tsc: Verify TSC_ADJUST from idle
When entering idle, it's a good oportunity to verify that the TSC_ADJUST
MSR has not been tampered with (BIOS hiding SMM cycles). If tampering is
detected, emit a warning and restore it to the previous value.

This is especially important for machines, which mark the TSC reliable
because there is no watchdog clocksource available (SoCs).

This is not sufficient for HPC (NOHZ_FULL) situations where a CPU never
goes idle, but adding a timer to do the check periodically is not an option
either. On a machine, which has this issue, the check triggeres right
during boot, so there is a decent chance that the sysadmin will notice.

Rate limit the check to once per second and warn only once per cpu.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20161119134017.732180441@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-29 19:23:16 +01:00