Linux 4.5-rc6

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Merge tag 'v4.5-rc6' into perf/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt

@@ -30,7 +30,7 @@ that they are defined using standard clock bindings with following
 clock-output-names:
  - "xin24m" - crystal input - required,
  - "ext_i2s" - external I2S clock - optional,
- - "ext_gmac" - external GMAC clock - optional
+ - "rmii_clkin" - external EMAC clock - optional
 
 Example: Clock controller node:
 

Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt

@@ -24,9 +24,8 @@ Main node required properties:
 		1 = edge triggered
 		4 = level triggered
 
-  Cells 4 and beyond are reserved for future use. When the 1st cell
+  Cells 4 and beyond are reserved for future use and must have a value
-  has a value of 0 or 1, cells 4 and beyond act as padding, and may be
+  of 0 if present.
-  ignored. It is recommended that padding cells have a value of 0.
 
 - reg : Specifies base physical address(s) and size of the GIC
   registers, in the following order:

Documentation/devicetree/bindings/net/renesas,ravb.txt

@@ -82,8 +82,8 @@ Example:
 				  "ch16", "ch17", "ch18", "ch19",
 				  "ch20", "ch21", "ch22", "ch23",
 				  "ch24";
-		clocks = <&mstp8_clks R8A7795_CLK_ETHERAVB>;
+		clocks = <&cpg CPG_MOD 812>;
-		power-domains = <&cpg_clocks>;
+		power-domains = <&cpg>;
 		phy-mode = "rgmii-id";
 		phy-handle = <&phy0>;
 

Documentation/devicetree/bindings/regulator/tps65217.txt

@@ -26,11 +26,7 @@ Example:
 		ti,pmic-shutdown-controller;
 
 		regulators {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
 			dcdc1_reg: dcdc1 {
-				reg = <0>;
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-boot-on;
@@ -38,7 +34,6 @@ Example:
 			};
 
 			dcdc2_reg: dcdc2 {
-				reg = <1>;
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
@@ -46,7 +41,6 @@ Example:
 			};
 
 			dcdc3_reg: dcc3 {
-				reg = <2>;
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-boot-on;
@@ -54,7 +48,6 @@ Example:
 			};
 
 			ldo1_reg: ldo1 {
-				reg = <3>;
 				regulator-min-microvolt = <1000000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
@@ -62,7 +55,6 @@ Example:
 			};
 
 			ldo2_reg: ldo2 {
-				reg = <4>;
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
@@ -70,7 +62,6 @@ Example:
 			};
 
 			ldo3_reg: ldo3 {
-				reg = <5>;
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
@@ -78,7 +69,6 @@ Example:
 			};
 
 			ldo4_reg: ldo4 {
-				reg = <6>;
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;

Documentation/devicetree/bindings/rtc/s3c-rtc.txt

@@ -14,6 +14,10 @@ Required properties:
   interrupt number is the rtc alarm interrupt and second interrupt number
   is the rtc tick interrupt. The number of cells representing a interrupt
   depends on the parent interrupt controller.
+- clocks: Must contain a list of phandle and clock specifier for the rtc
+          and source clocks.
+- clock-names: Must contain "rtc" and "rtc_src" entries sorted in the
+               same order as the clocks property.
 
 Example:
 
@@ -21,4 +25,6 @@ Example:
 		compatible = "samsung,s3c6410-rtc";
 		reg = <0x10070000 0x100>;
 		interrupts = <44 0 45 0>;
+		clocks = <&clock CLK_RTC>, <&s2mps11_osc S2MPS11_CLK_AP>;
+		clock-names = "rtc", "rtc_src";
 	};

Documentation/devicetree/bindings/serial/fsl-imx-uart.txt

@@ -9,7 +9,7 @@ Optional properties:
 - fsl,uart-has-rtscts : Indicate the uart has rts and cts
 - fsl,irda-mode : Indicate the uart supports irda mode
 - fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
-                  is DCE mode by default.
+                  in DCE mode by default.
 
 Note: Each uart controller should have an alias correctly numbered
 in "aliases" node.

Documentation/filesystems/efivarfs.txt

@@ -14,3 +14,10 @@ filesystem.
 efivarfs is typically mounted like this,
 
 	mount -t efivarfs none /sys/firmware/efi/efivars
+
+Due to the presence of numerous firmware bugs where removing non-standard
+UEFI variables causes the system firmware to fail to POST, efivarfs
+files that are not well-known standardized variables are created
+as immutable files.  This doesn't prevent removal - "chattr -i" will work -
+but it does prevent this kind of failure from being accomplished
+accidentally.

Documentation/timers/hpet.txt

@@ -1,9 +1,7 @@
 		High Precision Event Timer Driver for Linux
 
 The High Precision Event Timer (HPET) hardware follows a specification
-by Intel and Microsoft which can be found at
+by Intel and Microsoft, revision 1.
-
-	http://www.intel.com/hardwaredesign/hpetspec_1.pdf
 
 Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
 and up to 32 comparators.  Normally three or more comparators are provided,

MAINTAINERS

@@ -920,17 +920,24 @@ M:	Emilio López <emilio@elopez.com.ar>
 S:	Maintained
 F:	drivers/clk/sunxi/
 
-ARM/Amlogic MesonX SoC support
+ARM/Amlogic Meson SoC support
 M:	Carlo Caione <carlo@caione.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L:	linux-meson@googlegroups.com
+W:	http://linux-meson.com/
 S:	Maintained
-F:	drivers/media/rc/meson-ir.c
+F:	arch/arm/mach-meson/
-N:	meson[x68]
+F:	arch/arm/boot/dts/meson*
+N:	meson
 
 ARM/Annapurna Labs ALPINE ARCHITECTURE
 M:	Tsahee Zidenberg <tsahee@annapurnalabs.com>
+M:	Antoine Tenart <antoine.tenart@free-electrons.com>
 S:	Maintained
 F:	arch/arm/mach-alpine/
+F:	arch/arm/boot/dts/alpine*
+F:	arch/arm64/boot/dts/al/
+F:	drivers/*/*alpine*
 
 ARM/ATMEL AT91RM9200, AT91SAM9 AND SAMA5 SOC SUPPORT
 M:	Nicolas Ferre <nicolas.ferre@atmel.com>
@@ -3444,7 +3451,6 @@ F:	drivers/usb/dwc2/
 DESIGNWARE USB3 DRD IP DRIVER
 M:	Felipe Balbi <balbi@kernel.org>
 L:	linux-usb@vger.kernel.org
-L:	linux-omap@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
 S:	Maintained
 F:	drivers/usb/dwc3/
@@ -6128,7 +6134,7 @@ F:	include/uapi/linux/sunrpc/
 
 KERNEL SELFTEST FRAMEWORK
 M:	Shuah Khan <shuahkh@osg.samsung.com>
-L:	linux-api@vger.kernel.org
+L:	linux-kselftest@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/shuah/linux-kselftest
 S:	Maintained
 F:	tools/testing/selftests
@@ -7354,7 +7360,7 @@ F:	drivers/tty/isicom.c
 F:	include/linux/isicom.h
 
 MUSB MULTIPOINT HIGH SPEED DUAL-ROLE CONTROLLER
-M:	Felipe Balbi <balbi@kernel.org>
+M:	Bin Liu <b-liu@ti.com>
 L:	linux-usb@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
 S:	Maintained
@@ -7686,13 +7692,13 @@ S:	Maintained
 F:	arch/nios2/
 
 NOKIA N900 POWER SUPPLY DRIVERS
-M:	Pali Rohár <pali.rohar@gmail.com>
+R:	Pali Rohár <pali.rohar@gmail.com>
-S:	Maintained
 F:	include/linux/power/bq2415x_charger.h
 F:	include/linux/power/bq27xxx_battery.h
 F:	include/linux/power/isp1704_charger.h
 F:	drivers/power/bq2415x_charger.c
 F:	drivers/power/bq27xxx_battery.c
+F:	drivers/power/bq27xxx_battery_i2c.c
 F:	drivers/power/isp1704_charger.c
 F:	drivers/power/rx51_battery.c
 
@@ -7923,11 +7929,9 @@ F:	drivers/media/platform/omap3isp/
 F:	drivers/staging/media/omap4iss/
 
 OMAP USB SUPPORT
-M:	Felipe Balbi <balbi@kernel.org>
 L:	linux-usb@vger.kernel.org
 L:	linux-omap@vger.kernel.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
+S:	Orphan
-S:	Maintained
 F:	drivers/usb/*/*omap*
 F:	arch/arm/*omap*/usb*
 
@@ -9558,6 +9562,12 @@ M:	Andreas Noever <andreas.noever@gmail.com>
 S:	Maintained
 F:	drivers/thunderbolt/
 
+TI BQ27XXX POWER SUPPLY DRIVER
+R:	Andrew F. Davis <afd@ti.com>
+F:	include/linux/power/bq27xxx_battery.h
+F:	drivers/power/bq27xxx_battery.c
+F:	drivers/power/bq27xxx_battery_i2c.c
+
 TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER
 M:	John Stultz <john.stultz@linaro.org>
 M:	Thomas Gleixner <tglx@linutronix.de>
@@ -12013,7 +12023,6 @@ F:	arch/arm64/xen/
 F:	arch/arm64/include/asm/xen/
 
 XEN NETWORK BACKEND DRIVER
-M:	Ian Campbell <ian.campbell@citrix.com>
 M:	Wei Liu <wei.liu2@citrix.com>
 L:	xen-devel@lists.xenproject.org (moderated for non-subscribers)
 L:	netdev@vger.kernel.org

Makefile

@@ -1,7 +1,7 @@
 VERSION = 4
 PATCHLEVEL = 5
 SUBLEVEL = 0
-EXTRAVERSION = -rc4
+EXTRAVERSION = -rc6
 NAME = Blurry Fish Butt
 
 # *DOCUMENTATION*

arch/arc/Kconfig

@@ -12,8 +12,6 @@ config ARC
 	select BUILDTIME_EXTABLE_SORT
 	select COMMON_CLK
 	select CLONE_BACKWARDS
-	# ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
-	select DEVTMPFS if !INITRAMFS_SOURCE=""
 	select GENERIC_ATOMIC64
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_FIND_FIRST_BIT
@@ -275,14 +273,6 @@ config ARC_DCCM_BASE
 	default "0xA0000000"
 	depends on ARC_HAS_DCCM
 
-config ARC_HAS_HW_MPY
-	bool "Use Hardware Multiplier (Normal or Faster XMAC)"
-	default y
-	help
-	  Influences how gcc generates code for MPY operations.
-	  If enabled, MPYxx insns are generated, provided by Standard/XMAC
-	  Multipler. Otherwise software multipy lib is used
-
 choice
 	prompt "MMU Version"
 	default ARC_MMU_V3 if ARC_CPU_770
@@ -542,14 +532,6 @@ config ARC_DBG_TLB_MISS_COUNT
 	  Counts number of I and D TLB Misses and exports them via Debugfs
 	  The counters can be cleared via Debugfs as well
 
-if SMP
-
-config ARC_IPI_DBG
-	bool "Debug Inter Core interrupts"
-	default n
-
-endif
-
 endif
 
 config ARC_UBOOT_SUPPORT

arch/arc/Makefile

@@ -74,10 +74,6 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN)	+= -EB
 # --build-id w/o "-marclinux". Default arc-elf32-ld is OK
 ldflags-$(upto_gcc44)			+= -marclinux
 
-ifndef CONFIG_ARC_HAS_HW_MPY
-	cflags-y	+= -mno-mpy
-endif
-
 LIBGCC	:= $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
 
 # Modules with short calls might break for calls into builtin-kernel

arch/arc/configs/axs101_defconfig

@@ -39,6 +39,7 @@ CONFIG_IP_PNP_RARP=y
 # CONFIG_INET_XFRM_MODE_TUNNEL is not set
 # CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -73,7 +74,6 @@ CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 CONFIG_LOGO=y
@@ -91,12 +91,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_DW=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
 CONFIG_MSDOS_FS=y
 CONFIG_VFAT_FS=y
 CONFIG_NTFS_FS=y
 CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
 CONFIG_NFS_FS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ISO8859_1=y

arch/arc/configs/axs103_defconfig

@@ -39,14 +39,10 @@ CONFIG_IP_PNP_RARP=y
 # CONFIG_INET_XFRM_MODE_TUNNEL is not set
 # CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_MTD=y
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_BLOCK=y
-CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_AXS=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_NETDEVICES=y
@@ -78,14 +74,12 @@ CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 CONFIG_LOGO=y
 # CONFIG_LOGO_LINUX_MONO is not set
 # CONFIG_LOGO_LINUX_VGA16 is not set
 # CONFIG_LOGO_LINUX_CLUT224 is not set
-CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_HCD_PLATFORM=y
 CONFIG_USB_OHCI_HCD=y
@@ -97,12 +91,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_DW=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
 CONFIG_MSDOS_FS=y
 CONFIG_VFAT_FS=y
 CONFIG_NTFS_FS=y
 CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
 CONFIG_NFS_FS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ISO8859_1=y

arch/arc/configs/axs103_smp_defconfig

@@ -40,14 +40,10 @@ CONFIG_IP_PNP_RARP=y
 # CONFIG_INET_XFRM_MODE_TUNNEL is not set
 # CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_MTD=y
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_BLOCK=y
-CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_AXS=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_NETDEVICES=y
@@ -79,14 +75,12 @@ CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 CONFIG_LOGO=y
 # CONFIG_LOGO_LINUX_MONO is not set
 # CONFIG_LOGO_LINUX_VGA16 is not set
 # CONFIG_LOGO_LINUX_CLUT224 is not set
-CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_HCD_PLATFORM=y
 CONFIG_USB_OHCI_HCD=y
@@ -98,12 +92,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_DW=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
 CONFIG_MSDOS_FS=y
 CONFIG_VFAT_FS=y
 CONFIG_NTFS_FS=y
 CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
 CONFIG_NFS_FS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ISO8859_1=y

arch/arc/configs/nsim_700_defconfig

@@ -4,6 +4,7 @@ CONFIG_DEFAULT_HOSTNAME="ARCLinux"
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -26,7 +27,6 @@ CONFIG_ARC_PLAT_SIM=y
 CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -34,6 +34,7 @@ CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -51,7 +52,6 @@ CONFIG_SERIAL_ARC=y
 CONFIG_SERIAL_ARC_CONSOLE=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 # CONFIG_IOMMU_SUPPORT is not set
@@ -63,4 +63,3 @@ CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
 # CONFIG_DEBUG_PREEMPT is not set
-CONFIG_XZ_DEC=y

arch/arc/configs/nsim_hs_defconfig

@@ -35,6 +35,7 @@ CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -49,7 +50,6 @@ CONFIG_SERIAL_ARC=y
 CONFIG_SERIAL_ARC_CONSOLE=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 # CONFIG_IOMMU_SUPPORT is not set
@@ -61,4 +61,3 @@ CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
 # CONFIG_DEBUG_PREEMPT is not set
-CONFIG_XZ_DEC=y

arch/arc/configs/nsim_hs_smp_defconfig

@@ -2,6 +2,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_DEFAULT_HOSTNAME="ARCLinux"
 # CONFIG_SWAP is not set
+# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -21,13 +22,11 @@ CONFIG_MODULES=y
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
 CONFIG_ARC_PLAT_SIM=y
-CONFIG_ARC_BOARD_ML509=y
 CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
 CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -35,6 +34,7 @@ CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -49,7 +49,6 @@ CONFIG_SERIAL_ARC=y
 CONFIG_SERIAL_ARC_CONSOLE=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 # CONFIG_IOMMU_SUPPORT is not set
@@ -60,4 +59,3 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
-CONFIG_XZ_DEC=y

arch/arc/configs/nsimosci_defconfig

@@ -33,6 +33,7 @@ CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -58,7 +59,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
 # CONFIG_HID is not set

arch/arc/configs/nsimosci_hs_defconfig

@@ -34,12 +34,12 @@ CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 # CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
 # CONFIG_BLK_DEV is not set
 CONFIG_NETDEVICES=y
-CONFIG_NET_OSCI_LAN=y
 CONFIG_INPUT_EVDEV=y
 # CONFIG_MOUSE_PS2_ALPS is not set
 # CONFIG_MOUSE_PS2_LOGIPS2PP is not set
@@ -58,7 +58,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
 # CONFIG_HID is not set

arch/arc/configs/nsimosci_hs_smp_defconfig

@@ -2,6 +2,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
 CONFIG_DEFAULT_HOSTNAME="ARCLinux"
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_IKCONFIG=y
@@ -18,15 +19,11 @@ CONFIG_MODULES=y
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
 CONFIG_ARC_PLAT_SIM=y
-CONFIG_ARC_BOARD_ML509=y
 CONFIG_ISA_ARCV2=y
 CONFIG_SMP=y
-CONFIG_ARC_HAS_LL64=y
-# CONFIG_ARC_HAS_RTSC is not set
 CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs_idu"
 CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_PACKET_DIAG=y
@@ -40,6 +37,7 @@ CONFIG_INET=y
 # CONFIG_INET_LRO is not set
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -56,14 +54,11 @@ CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_STMICRO is not set
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
-CONFIG_NET_OSCI_LAN=y
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
 CONFIG_MOUSE_PS2_TOUCHKIT=y
 # CONFIG_SERIO_SERPORT is not set
-CONFIG_SERIO_LIBPS2=y
 CONFIG_SERIO_ARC_PS2=y
-CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_LEGACY_PTYS is not set
 # CONFIG_DEVKMEM is not set
 CONFIG_SERIAL_8250=y
@@ -75,9 +70,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
 CONFIG_FB=y
-CONFIG_ARCPGU_RGB888=y
-CONFIG_ARCPGU_DISPTYPE=0
-# CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
 # CONFIG_HID is not set

arch/arc/configs/tb10x_defconfig

@@ -3,6 +3,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
 CONFIG_DEFAULT_HOSTNAME="tb10x"
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BSD_PROCESS_ACCT=y
 CONFIG_BSD_PROCESS_ACCT_V3=y
@@ -26,12 +27,10 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLOCK is not set
 CONFIG_ARC_PLAT_TB10X=y
 CONFIG_ARC_CACHE_LINE_SHIFT=5
-CONFIG_ARC_STACK_NONEXEC=y
 CONFIG_HZ=250
 CONFIG_ARC_BUILTIN_DTB_NAME="abilis_tb100_dvk"
 CONFIG_PREEMPT_VOLUNTARY=y
 # CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -44,8 +43,8 @@ CONFIG_IP_MULTICAST=y
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
 # CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_PROC_DEVICETREE=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_CADENCE is not set
 # CONFIG_NET_VENDOR_BROADCOM is not set
@@ -55,9 +54,6 @@ CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_NATSEMI is not set
 # CONFIG_NET_VENDOR_SEEQ is not set
 CONFIG_STMMAC_ETH=y
-CONFIG_STMMAC_DEBUG_FS=y
-CONFIG_STMMAC_DA=y
-CONFIG_STMMAC_CHAINED=y
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
 # CONFIG_INPUT is not set
@@ -91,7 +87,6 @@ CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
 CONFIG_LEDS_TRIGGER_TRANSIENT=y
 CONFIG_DMADEVICES=y
 CONFIG_DW_DMAC=y
-CONFIG_NET_DMA=y
 CONFIG_ASYNC_TX_DMA=y
 # CONFIG_IOMMU_SUPPORT is not set
 # CONFIG_DNOTIFY is not set
@@ -100,17 +95,16 @@ CONFIG_TMPFS=y
 CONFIG_CONFIGFS_FS=y
 # CONFIG_MISC_FILESYSTEMS is not set
 # CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_DEBUG_INFO=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
-CONFIG_MAGIC_SYSRQ=y
 CONFIG_STRIP_ASM_SYMS=y
 CONFIG_DEBUG_FS=y
 CONFIG_HEADERS_CHECK=y
 CONFIG_DEBUG_SECTION_MISMATCH=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_STACKOVERFLOW=y
 CONFIG_DETECT_HUNG_TASK=y
 CONFIG_SCHEDSTATS=y
 CONFIG_TIMER_STATS=y
-CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_MEMORY_INIT=y
-CONFIG_DEBUG_STACKOVERFLOW=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/arc/include/asm/arcregs.h

@@ -10,7 +10,8 @@
 #define _ASM_ARC_ARCREGS_H
 
 /* Build Configuration Registers */
-#define ARC_REG_DCCMBASE_BCR	0x61	/* DCCM Base Addr */
+#define ARC_REG_AUX_DCCM	0x18	/* DCCM Base Addr ARCv2 */
+#define ARC_REG_DCCM_BASE_BUILD	0x61	/* DCCM Base Addr ARCompact */
 #define ARC_REG_CRC_BCR		0x62
 #define ARC_REG_VECBASE_BCR	0x68
 #define ARC_REG_PERIBASE_BCR	0x69
@@ -18,10 +19,10 @@
 #define ARC_REG_DPFP_BCR	0x6C	/* ARCompact: Dbl Precision FPU */
 #define ARC_REG_FP_V2_BCR	0xc8	/* ARCv2 FPU */
 #define ARC_REG_SLC_BCR		0xce
-#define ARC_REG_DCCM_BCR	0x74	/* DCCM Present + SZ */
+#define ARC_REG_DCCM_BUILD	0x74	/* DCCM size (common) */
 #define ARC_REG_TIMERS_BCR	0x75
 #define ARC_REG_AP_BCR		0x76
-#define ARC_REG_ICCM_BCR	0x78
+#define ARC_REG_ICCM_BUILD	0x78	/* ICCM size (common) */
 #define ARC_REG_XY_MEM_BCR	0x79
 #define ARC_REG_MAC_BCR		0x7a
 #define ARC_REG_MUL_BCR		0x7b
@@ -36,6 +37,7 @@
 #define ARC_REG_IRQ_BCR		0xF3
 #define ARC_REG_SMART_BCR	0xFF
 #define ARC_REG_CLUSTER_BCR	0xcf
+#define ARC_REG_AUX_ICCM	0x208	/* ICCM Base Addr (ARCv2) */
 
 /* status32 Bits Positions */
 #define STATUS_AE_BIT		5	/* Exception active */
@@ -246,7 +248,7 @@ struct bcr_perip {
 #endif
 };
 
-struct bcr_iccm {
+struct bcr_iccm_arcompact {
 #ifdef CONFIG_CPU_BIG_ENDIAN
 	unsigned int base:16, pad:5, sz:3, ver:8;
 #else
@@ -254,17 +256,15 @@ struct bcr_iccm {
 #endif
 };
 
-/* DCCM Base Address Register: ARC_REG_DCCMBASE_BCR */
+struct bcr_iccm_arcv2 {
-struct bcr_dccm_base {
 #ifdef CONFIG_CPU_BIG_ENDIAN
-	unsigned int addr:24, ver:8;
+	unsigned int pad:8, sz11:4, sz01:4, sz10:4, sz00:4, ver:8;
 #else
-	unsigned int ver:8, addr:24;
+	unsigned int ver:8, sz00:4, sz10:4, sz01:4, sz11:4, pad:8;
 #endif
 };
 
-/* DCCM RAM Configuration Register: ARC_REG_DCCM_BCR */
+struct bcr_dccm_arcompact {
-struct bcr_dccm {
 #ifdef CONFIG_CPU_BIG_ENDIAN
 	unsigned int res:21, sz:3, ver:8;
 #else
@@ -272,6 +272,14 @@ struct bcr_dccm {
 #endif
 };
 
+struct bcr_dccm_arcv2 {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+	unsigned int pad2:12, cyc:3, pad1:1, sz1:4, sz0:4, ver:8;
+#else
+	unsigned int ver:8, sz0:4, sz1:4, pad1:1, cyc:3, pad2:12;
+#endif
+};
+
 /* ARCompact: Both SP and DP FPU BCRs have same format */
 struct bcr_fp_arcompact {
 #ifdef CONFIG_CPU_BIG_ENDIAN
@@ -315,9 +323,9 @@ struct bcr_bpu_arcv2 {
 
 struct bcr_generic {
 #ifdef CONFIG_CPU_BIG_ENDIAN
-	unsigned int pad:24, ver:8;
+	unsigned int info:24, ver:8;
 #else
-	unsigned int ver:8, pad:24;
+	unsigned int ver:8, info:24;
 #endif
 };
 

arch/arc/include/asm/irq.h

@@ -16,11 +16,9 @@
 #ifdef CONFIG_ISA_ARCOMPACT
 #define TIMER0_IRQ      3
 #define TIMER1_IRQ      4
-#define IPI_IRQ		(NR_CPU_IRQS-1) /* dummy to enable SMP build for up hardware */
 #else
 #define TIMER0_IRQ      16
 #define TIMER1_IRQ      17
-#define IPI_IRQ         19
 #endif
 
 #include <linux/interrupt.h>

arch/arc/include/asm/irqflags-arcv2.h

@@ -22,6 +22,7 @@
 #define AUX_IRQ_CTRL		0x00E
 #define AUX_IRQ_ACT		0x043	/* Active Intr across all levels */
 #define AUX_IRQ_LVL_PEND	0x200	/* Pending Intr across all levels */
+#define AUX_IRQ_HINT		0x201	/* For generating Soft Interrupts */
 #define AUX_IRQ_PRIORITY	0x206
 #define ICAUSE			0x40a
 #define AUX_IRQ_SELECT		0x40b
@@ -115,6 +116,16 @@ static inline int arch_irqs_disabled(void)
 	return arch_irqs_disabled_flags(arch_local_save_flags());
 }
 
+static inline void arc_softirq_trigger(int irq)
+{
+	write_aux_reg(AUX_IRQ_HINT, irq);
+}
+
+static inline void arc_softirq_clear(int irq)
+{
+	write_aux_reg(AUX_IRQ_HINT, 0);
+}
+
 #else
 
 .macro IRQ_DISABLE  scratch

arch/arc/kernel/entry-arcv2.S

@@ -45,11 +45,12 @@ VECTOR	reserved		; Reserved slots
 VECTOR	handle_interrupt	; (16) Timer0
 VECTOR	handle_interrupt	; unused (Timer1)
 VECTOR	handle_interrupt	; unused (WDT)
-VECTOR	handle_interrupt	; (19) ICI (inter core interrupt)
+VECTOR	handle_interrupt	; (19) Inter core Interrupt (IPI)
-VECTOR	handle_interrupt
+VECTOR	handle_interrupt	; (20) perf Interrupt
-VECTOR	handle_interrupt
+VECTOR	handle_interrupt	; (21) Software Triggered Intr (Self IPI)
-VECTOR	handle_interrupt
+VECTOR	handle_interrupt	; unused
-VECTOR	handle_interrupt	; (23) End of fixed IRQs
+VECTOR	handle_interrupt	; (23) unused
+# End of fixed IRQs
 
 .rept CONFIG_ARC_NUMBER_OF_INTERRUPTS - 8
 	VECTOR	handle_interrupt

arch/arc/kernel/intc-compact.c

@@ -81,9 +81,6 @@ static int arc_intc_domain_map(struct irq_domain *d, unsigned int irq,
 {
 	switch (irq) {
 	case TIMER0_IRQ:
-#ifdef CONFIG_SMP
-	case IPI_IRQ:
-#endif
 		irq_set_chip_and_handler(irq, &onchip_intc, handle_percpu_irq);
 		break;
 	default:

arch/arc/kernel/mcip.c

@@ -11,9 +11,13 @@
 #include <linux/smp.h>
 #include <linux/irq.h>
 #include <linux/spinlock.h>
+#include <asm/irqflags-arcv2.h>
 #include <asm/mcip.h>
 #include <asm/setup.h>
 
+#define IPI_IRQ		19
+#define SOFTIRQ_IRQ	21
+
 static char smp_cpuinfo_buf[128];
 static int idu_detected;
 
@@ -22,6 +26,7 @@ static DEFINE_RAW_SPINLOCK(mcip_lock);
 static void mcip_setup_per_cpu(int cpu)
 {
 	smp_ipi_irq_setup(cpu, IPI_IRQ);
+	smp_ipi_irq_setup(cpu, SOFTIRQ_IRQ);
 }
 
 static void mcip_ipi_send(int cpu)
@@ -29,46 +34,44 @@ static void mcip_ipi_send(int cpu)
 	unsigned long flags;
 	int ipi_was_pending;
 
+	/* ARConnect can only send IPI to others */
+	if (unlikely(cpu == raw_smp_processor_id())) {
+		arc_softirq_trigger(SOFTIRQ_IRQ);
+		return;
+	}
+
+	raw_spin_lock_irqsave(&mcip_lock, flags);
+
 	/*
-	 * NOTE: We must spin here if the other cpu hasn't yet
+	 * If receiver already has a pending interrupt, elide sending this one.
-	 * serviced a previous message. This can burn lots
+	 * Linux cross core calling works well with concurrent IPIs
-	 * of time, but we MUST follows this protocol or
+	 * coalesced into one
-	 * ipi messages can be lost!!!
+	 * see arch/arc/kernel/smp.c: ipi_send_msg_one()
-	 * Also, we must release the lock in this loop because
-	 * the other side may get to this same loop and not
-	 * be able to ack -- thus causing deadlock.
 	 */
+	__mcip_cmd(CMD_INTRPT_READ_STATUS, cpu);
+	ipi_was_pending = read_aux_reg(ARC_REG_MCIP_READBACK);
+	if (!ipi_was_pending)
+		__mcip_cmd(CMD_INTRPT_GENERATE_IRQ, cpu);
 
-	do {
-		raw_spin_lock_irqsave(&mcip_lock, flags);
-		__mcip_cmd(CMD_INTRPT_READ_STATUS, cpu);
-		ipi_was_pending = read_aux_reg(ARC_REG_MCIP_READBACK);
-		if (ipi_was_pending == 0)
-			break; /* break out but keep lock */
-		raw_spin_unlock_irqrestore(&mcip_lock, flags);
-	} while (1);
-
-	__mcip_cmd(CMD_INTRPT_GENERATE_IRQ, cpu);
 	raw_spin_unlock_irqrestore(&mcip_lock, flags);
-
-#ifdef CONFIG_ARC_IPI_DBG
-	if (ipi_was_pending)
-		pr_info("IPI ACK delayed from cpu %d\n", cpu);
-#endif
 }
 
 static void mcip_ipi_clear(int irq)
 {
 	unsigned int cpu, c;
 	unsigned long flags;
-	unsigned int __maybe_unused copy;
+
+	if (unlikely(irq == SOFTIRQ_IRQ)) {
+		arc_softirq_clear(irq);
+		return;
+	}
 
 	raw_spin_lock_irqsave(&mcip_lock, flags);
 
 	/* Who sent the IPI */
 	__mcip_cmd(CMD_INTRPT_CHECK_SOURCE, 0);
 
-	copy = cpu = read_aux_reg(ARC_REG_MCIP_READBACK);	/* 1,2,4,8... */
+	cpu = read_aux_reg(ARC_REG_MCIP_READBACK);	/* 1,2,4,8... */
 
 	/*
 	 * In rare case, multiple concurrent IPIs sent to same target can
@@ -82,12 +85,6 @@ static void mcip_ipi_clear(int irq)
 	} while (cpu);
 
 	raw_spin_unlock_irqrestore(&mcip_lock, flags);
-
-#ifdef CONFIG_ARC_IPI_DBG
-	if (c != __ffs(copy))
-		pr_info("IPIs from %x coalesced to %x\n",
-			copy, raw_smp_processor_id());
-#endif
 }
 
 static void mcip_probe_n_setup(void)
@@ -111,10 +108,11 @@ static void mcip_probe_n_setup(void)
 	READ_BCR(ARC_REG_MCIP_BCR, mp);
 
 	sprintf(smp_cpuinfo_buf,
-		"Extn [SMP]\t: ARConnect (v%d): %d cores with %s%s%s%s\n",
+		"Extn [SMP]\t: ARConnect (v%d): %d cores with %s%s%s%s%s\n",
 		mp.ver, mp.num_cores,
 		IS_AVAIL1(mp.ipi, "IPI "),
 		IS_AVAIL1(mp.idu, "IDU "),
+		IS_AVAIL1(mp.llm, "LLM "),
 		IS_AVAIL1(mp.dbg, "DEBUG "),
 		IS_AVAIL1(mp.gfrc, "GFRC"));
 

arch/arc/kernel/setup.c

@@ -42,6 +42,53 @@ struct task_struct *_current_task[NR_CPUS];	/* For stack switching */
 
 struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
 
+static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
+{
+	if (is_isa_arcompact()) {
+		struct bcr_iccm_arcompact iccm;
+		struct bcr_dccm_arcompact dccm;
+
+		READ_BCR(ARC_REG_ICCM_BUILD, iccm);
+		if (iccm.ver) {
+			cpu->iccm.sz = 4096 << iccm.sz;	/* 8K to 512K */
+			cpu->iccm.base_addr = iccm.base << 16;
+		}
+
+		READ_BCR(ARC_REG_DCCM_BUILD, dccm);
+		if (dccm.ver) {
+			unsigned long base;
+			cpu->dccm.sz = 2048 << dccm.sz;	/* 2K to 256K */
+
+			base = read_aux_reg(ARC_REG_DCCM_BASE_BUILD);
+			cpu->dccm.base_addr = base & ~0xF;
+		}
+	} else {
+		struct bcr_iccm_arcv2 iccm;
+		struct bcr_dccm_arcv2 dccm;
+		unsigned long region;
+
+		READ_BCR(ARC_REG_ICCM_BUILD, iccm);
+		if (iccm.ver) {
+			cpu->iccm.sz = 256 << iccm.sz00;	/* 512B to 16M */
+			if (iccm.sz00 == 0xF && iccm.sz01 > 0)
+				cpu->iccm.sz <<= iccm.sz01;
+
+			region = read_aux_reg(ARC_REG_AUX_ICCM);
+			cpu->iccm.base_addr = region & 0xF0000000;
+		}
+
+		READ_BCR(ARC_REG_DCCM_BUILD, dccm);
+		if (dccm.ver) {
+			cpu->dccm.sz = 256 << dccm.sz0;
+			if (dccm.sz0 == 0xF && dccm.sz1 > 0)
+				cpu->dccm.sz <<= dccm.sz1;
+
+			region = read_aux_reg(ARC_REG_AUX_DCCM);
+			cpu->dccm.base_addr = region & 0xF0000000;
+		}
+	}
+}
+
 static void read_arc_build_cfg_regs(void)
 {
 	struct bcr_perip uncached_space;
@@ -76,36 +123,11 @@ static void read_arc_build_cfg_regs(void)
 	cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0;        /* 1,3 */
 	cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
 	cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
-
-	/* Note that we read the CCM BCRs independent of kernel config
-	 * This is to catch the cases where user doesn't know that
-	 * CCMs are present in hardware build
-	 */
-	{
-		struct bcr_iccm iccm;
-		struct bcr_dccm dccm;
-		struct bcr_dccm_base dccm_base;
-		unsigned int bcr_32bit_val;
-
-		bcr_32bit_val = read_aux_reg(ARC_REG_ICCM_BCR);
-		if (bcr_32bit_val) {
-			iccm = *((struct bcr_iccm *)&bcr_32bit_val);
-			cpu->iccm.base_addr = iccm.base << 16;
-			cpu->iccm.sz = 0x2000 << (iccm.sz - 1);
-		}
-
-		bcr_32bit_val = read_aux_reg(ARC_REG_DCCM_BCR);
-		if (bcr_32bit_val) {
-			dccm = *((struct bcr_dccm *)&bcr_32bit_val);
-			cpu->dccm.sz = 0x800 << (dccm.sz);
-
-			READ_BCR(ARC_REG_DCCMBASE_BCR, dccm_base);
-			cpu->dccm.base_addr = dccm_base.addr << 8;
-		}
-	}
-
 	READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem);
 
+	/* Read CCM BCRs for boot reporting even if not enabled in Kconfig */
+	read_decode_ccm_bcr(cpu);
+
 	read_decode_mmu_bcr();
 	read_decode_cache_bcr();
 
@@ -237,8 +259,6 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
 
 			n += scnprintf(buf + n, len - n, "mpy[opt %d] ", opt);
 		}
-		n += scnprintf(buf + n, len - n, "%s",
-			       IS_USED_CFG(CONFIG_ARC_HAS_HW_MPY));
 	}
 
 	n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n",

arch/arc/kernel/smp.c

@@ -336,11 +336,8 @@ irqreturn_t do_IPI(int irq, void *dev_id)
 		int rc;
 
 		rc = __do_IPI(msg);
-#ifdef CONFIG_ARC_IPI_DBG
-		/* IPI received but no valid @msg */
 		if (rc)
 			pr_info("IPI with bogus msg %ld in %ld\n", msg, copy);
-#endif
 		pending &= ~(1U << msg);
 	} while (pending);
 

arch/arm/boot/dts/am335x-bone-common.dtsi

@@ -285,8 +285,10 @@
 	};
 };
 
+
+/include/ "tps65217.dtsi"
+
 &tps {
-	compatible = "ti,tps65217";
 	/*
 	 * Configure pmic to enter OFF-state instead of SLEEP-state ("RTC-only
 	 * mode") at poweroff.  Most BeagleBone versions do not support RTC-only
@@ -307,17 +309,12 @@
 	ti,pmic-shutdown-controller;
 
 	regulators {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
 		dcdc1_reg: regulator@0 {
-			reg = <0>;
 			regulator-name = "vdds_dpr";
 			regulator-always-on;
 		};
 
 		dcdc2_reg: regulator@1 {
-			reg = <1>;
 			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <925000>;
@@ -327,7 +324,6 @@
 		};
 
 		dcdc3_reg: regulator@2 {
-			reg = <2>;
 			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <925000>;
@@ -337,25 +333,21 @@
 		};
 
 		ldo1_reg: regulator@3 {
-			reg = <3>;
 			regulator-name = "vio,vrtc,vdds";
 			regulator-always-on;
 		};
 
 		ldo2_reg: regulator@4 {
-			reg = <4>;
 			regulator-name = "vdd_3v3aux";
 			regulator-always-on;
 		};
 
 		ldo3_reg: regulator@5 {
-			reg = <5>;
 			regulator-name = "vdd_1v8";
 			regulator-always-on;
 		};
 
 		ldo4_reg: regulator@6 {
-			reg = <6>;
 			regulator-name = "vdd_3v3a";
 			regulator-always-on;
 		};

arch/arm/boot/dts/am335x-chilisom.dtsi

@@ -128,21 +128,16 @@
 
 };
 
+/include/ "tps65217.dtsi"
+
 &tps {
-	compatible = "ti,tps65217";
-
 	regulators {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
 		dcdc1_reg: regulator@0 {
-			reg = <0>;
 			regulator-name = "vdds_dpr";
 			regulator-always-on;
 		};
 
 		dcdc2_reg: regulator@1 {
-			reg = <1>;
 			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <925000>;
@@ -152,7 +147,6 @@
 		};
 
 		dcdc3_reg: regulator@2 {
-			reg = <2>;
 			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <925000>;
@@ -162,28 +156,24 @@
 		};
 
 		ldo1_reg: regulator@3 {
-			reg = <3>;
 			regulator-name = "vio,vrtc,vdds";
 			regulator-boot-on;
 			regulator-always-on;
 		};
 
 		ldo2_reg: regulator@4 {
-			reg = <4>;
 			regulator-name = "vdd_3v3aux";
 			regulator-boot-on;
 			regulator-always-on;
 		};
 
 		ldo3_reg: regulator@5 {
-			reg = <5>;
 			regulator-name = "vdd_1v8";
 			regulator-boot-on;
 			regulator-always-on;
 		};
 
 		ldo4_reg: regulator@6 {
-			reg = <6>;
 			regulator-name = "vdd_3v3d";
 			regulator-boot-on;
 			regulator-always-on;

arch/arm/boot/dts/am335x-nano.dts

@@ -375,15 +375,11 @@
 	wp-gpios = <&gpio3 18 0>;
 };
 
+#include "tps65217.dtsi"
+
 &tps {
-	compatible = "ti,tps65217";
-
 	regulators {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
 		dcdc1_reg: regulator@0 {
-			reg = <0>;
 			/* +1.5V voltage with ±4% tolerance */
 			regulator-min-microvolt = <1450000>;
 			regulator-max-microvolt = <1550000>;
@@ -392,7 +388,6 @@
 		};
 
 		dcdc2_reg: regulator@1 {
-			reg = <1>;
 			/* VDD_MPU voltage limits 0.95V - 1.1V with ±4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <915000>;
@@ -402,7 +397,6 @@
 		};
 
 		dcdc3_reg: regulator@2 {
-			reg = <2>;
 			/* VDD_CORE voltage limits 0.95V - 1.1V with ±4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <915000>;
@@ -412,7 +406,6 @@
 		};
 
 		ldo1_reg: regulator@3 {
-			reg = <3>;
 			/* +1.8V voltage with ±4% tolerance */
 			regulator-min-microvolt = <1750000>;
 			regulator-max-microvolt = <1870000>;
@@ -421,7 +414,6 @@
 		};
 
 		ldo2_reg: regulator@4 {
-			reg = <4>;
 			/* +3.3V voltage with ±4% tolerance */
 			regulator-min-microvolt = <3175000>;
 			regulator-max-microvolt = <3430000>;
@@ -430,7 +422,6 @@
 		};
 
 		ldo3_reg: regulator@5 {
-			reg = <5>;
 			/* +1.8V voltage with ±4% tolerance */
 			regulator-min-microvolt = <1750000>;
 			regulator-max-microvolt = <1870000>;
@@ -439,7 +430,6 @@
 		};
 
 		ldo4_reg: regulator@6 {
-			reg = <6>;
 			/* +3.3V voltage with ±4% tolerance */
 			regulator-min-microvolt = <3175000>;
 			regulator-max-microvolt = <3430000>;

arch/arm/boot/dts/am335x-pepper.dts

@@ -420,9 +420,9 @@
 	vin-supply = <&vbat>;
 };
 
-&tps {
+/include/ "tps65217.dtsi"
-	compatible = "ti,tps65217";
 
+&tps {
 	backlight {
 		isel = <1>; /* ISET1 */
 		fdim = <200>; /* TPS65217_BL_FDIM_200HZ */
@@ -430,17 +430,12 @@
 	};
 
 	regulators {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
 		dcdc1_reg: regulator@0 {
-			reg = <0>;
 			/* VDD_1V8 system supply */
 			regulator-always-on;
 		};
 
 		dcdc2_reg: regulator@1 {
-			reg = <1>;
 			/* VDD_CORE voltage limits 0.95V - 1.26V with +/-4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <925000>;
@@ -450,7 +445,6 @@
 		};
 
 		dcdc3_reg: regulator@2 {
-			reg = <2>;
 			/* VDD_MPU voltage limits 0.95V - 1.1V with +/-4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <925000>;
@@ -460,21 +454,18 @@
 		};
 
 		ldo1_reg: regulator@3 {
-			reg = <3>;
 			/* VRTC 1.8V always-on supply */
 			regulator-name = "vrtc,vdds";
 			regulator-always-on;
 		};
 
 		ldo2_reg: regulator@4 {
-			reg = <4>;
 			/* 3.3V rail */
 			regulator-name = "vdd_3v3aux";
 			regulator-always-on;
 		};
 
 		ldo3_reg: regulator@5 {
-			reg = <5>;
 			/* VDD_3V3A 3.3V rail */
 			regulator-name = "vdd_3v3a";
 			regulator-min-microvolt = <3300000>;
@@ -482,7 +473,6 @@
 		};
 
 		ldo4_reg: regulator@6 {
-			reg = <6>;
 			/* VDD_3V3B 3.3V rail */
 			regulator-name = "vdd_3v3b";
 			regulator-always-on;

arch/arm/boot/dts/am335x-shc.dts

@@ -46,7 +46,7 @@
 			gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
 			linux,code = <KEY_BACK>;
 			debounce-interval = <1000>;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 
 		front_button {
@@ -54,7 +54,7 @@
 			gpios = <&gpio1 25 GPIO_ACTIVE_HIGH>;
 			linux,code = <KEY_FRONT>;
 			debounce-interval = <1000>;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 	};
 

arch/arm/boot/dts/am335x-sl50.dts

@@ -375,19 +375,16 @@
 	pinctrl-0 = <&uart4_pins>;
 };
 
+#include "tps65217.dtsi"
+
 &tps {
-	compatible = "ti,tps65217";
 	ti,pmic-shutdown-controller;
 
 	interrupt-parent = <&intc>;
 	interrupts = <7>;	/* NNMI */
 
 	regulators {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
 		dcdc1_reg: regulator@0 {
-			reg = <0>;
 			/* VDDS_DDR */
 			regulator-min-microvolt = <1500000>;
 			regulator-max-microvolt = <1500000>;
@@ -395,7 +392,6 @@
 		};
 
 		dcdc2_reg: regulator@1 {
-			reg = <1>;
 			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
 			regulator-name = "vdd_mpu";
 			regulator-min-microvolt = <925000>;
@@ -405,7 +401,6 @@
 		};
 
 		dcdc3_reg: regulator@2 {
-			reg = <2>;
 			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
 			regulator-name = "vdd_core";
 			regulator-min-microvolt = <925000>;
@@ -415,7 +410,6 @@
 		};
 
 		ldo1_reg: regulator@3 {
-			reg = <3>;
 			/* VRTC / VIO / VDDS*/
 			regulator-always-on;
 			regulator-min-microvolt = <1800000>;
@@ -423,7 +417,6 @@
 		};
 
 		ldo2_reg: regulator@4 {
-			reg = <4>;
 			/* VDD_3V3AUX */
 			regulator-always-on;
 			regulator-min-microvolt = <3300000>;
@@ -431,7 +424,6 @@
 		};
 
 		ldo3_reg: regulator@5 {
-			reg = <5>;
 			/* VDD_1V8 */
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
@@ -439,7 +431,6 @@
 		};
 
 		ldo4_reg: regulator@6 {
-			reg = <6>;
 			/* VDD_3V3A */
 			regulator-min-microvolt = <3300000>;
 			regulator-max-microvolt = <3300000>;

arch/arm/boot/dts/am57xx-beagle-x15.dts

@@ -173,6 +173,8 @@
 
 		sound0_master: simple-audio-card,codec {
 			sound-dai = <&tlv320aic3104>;
+			assigned-clocks = <&clkoutmux2_clk_mux>;
+			assigned-clock-parents = <&sys_clk2_dclk_div>;
 			clocks = <&clkout2_clk>;
 		};
 	};
@@ -796,6 +798,8 @@
 	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&mcasp3_pins_default>;
 	pinctrl-1 = <&mcasp3_pins_sleep>;
+	assigned-clocks = <&mcasp3_ahclkx_mux>;
+	assigned-clock-parents = <&sys_clkin2>;
 	status = "okay";
 
 	op-mode = <0>;	/* MCASP_IIS_MODE */

arch/arm/boot/dts/am57xx-cl-som-am57x.dts

@@ -545,7 +545,7 @@
 		ti,debounce-tol = /bits/ 16 <10>;
 		ti,debounce-rep = /bits/ 16 <1>;
 
-		linux,wakeup;
+		wakeup-source;
 	};
 };
 

arch/arm/boot/dts/imx6qdl.dtsi

@@ -896,7 +896,6 @@
 				#size-cells = <1>;
 				reg = <0x2100000 0x10000>;
 				ranges = <0 0x2100000 0x10000>;
-				interrupt-parent = <&intc>;
 				clocks = <&clks IMX6QDL_CLK_CAAM_MEM>,
 					 <&clks IMX6QDL_CLK_CAAM_ACLK>,
 					 <&clks IMX6QDL_CLK_CAAM_IPG>,

arch/arm/boot/dts/kirkwood-ds112.dts

@@ -14,7 +14,7 @@
 #include "kirkwood-synology.dtsi"
 
 / {
-	model = "Synology DS111";
+	model = "Synology DS112";
 	compatible = "synology,ds111", "marvell,kirkwood";
 
 	memory {

arch/arm/boot/dts/orion5x-linkstation-lswtgl.dts

@@ -228,6 +228,37 @@
 	};
 };
 
+&devbus_bootcs {
+	status = "okay";
+	devbus,keep-config;
+
+	flash@0 {
+		compatible = "jedec-flash";
+		reg = <0 0x40000>;
+		bank-width = <1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			header@0 {
+				reg = <0 0x30000>;
+				read-only;
+			};
+
+			uboot@30000 {
+				reg = <0x30000 0xF000>;
+				read-only;
+			};
+
+			uboot_env@3F000 {
+				reg = <0x3F000 0x1000>;
+			};
+		};
+	};
+};
+
 &mdio {
 	status = "okay";
 

arch/arm/boot/dts/sama5d2-pinfunc.h

@@ -90,7 +90,7 @@
 #define PIN_PA14__I2SC1_MCK		PINMUX_PIN(PIN_PA14, 4, 2)
 #define PIN_PA14__FLEXCOM3_IO2		PINMUX_PIN(PIN_PA14, 5, 1)
 #define PIN_PA14__D9			PINMUX_PIN(PIN_PA14, 6, 2)
-#define PIN_PA15			14
+#define PIN_PA15			15
 #define PIN_PA15__GPIO			PINMUX_PIN(PIN_PA15, 0, 0)
 #define PIN_PA15__SPI0_MOSI		PINMUX_PIN(PIN_PA15, 1, 1)
 #define PIN_PA15__TF1			PINMUX_PIN(PIN_PA15, 2, 1)

arch/arm/boot/dts/tps65217.dtsi

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * Integrated Power Management Chip
+ * http://www.ti.com/lit/ds/symlink/tps65217.pdf
+ */
+
+&tps {
+	compatible = "ti,tps65217";
+
+	regulators {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		dcdc1_reg: regulator@0 {
+			reg = <0>;
+			regulator-compatible = "dcdc1";
+		};
+
+		dcdc2_reg: regulator@1 {
+			reg = <1>;
+			regulator-compatible = "dcdc2";
+		};
+
+		dcdc3_reg: regulator@2 {
+			reg = <2>;
+			regulator-compatible = "dcdc3";
+		};
+
+		ldo1_reg: regulator@3 {
+			reg = <3>;
+			regulator-compatible = "ldo1";
+		};
+
+		ldo2_reg: regulator@4 {
+			reg = <4>;
+			regulator-compatible = "ldo2";
+		};
+
+		ldo3_reg: regulator@5 {
+			reg = <5>;
+			regulator-compatible = "ldo3";
+		};
+
+		ldo4_reg: regulator@6 {
+			reg = <6>;
+			regulator-compatible = "ldo4";
+		};
+	};
+};

arch/arm/crypto/aes-ce-glue.c

@@ -364,7 +364,7 @@ static struct crypto_alg aes_algs[] = { {
 	.cra_blkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
+		.ivsize		= 0,
 		.setkey		= ce_aes_setkey,
 		.encrypt	= ecb_encrypt,
 		.decrypt	= ecb_decrypt,
@@ -441,7 +441,7 @@ static struct crypto_alg aes_algs[] = { {
 	.cra_ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
+		.ivsize		= 0,
 		.setkey		= ablk_set_key,
 		.encrypt	= ablk_encrypt,
 		.decrypt	= ablk_decrypt,

arch/arm/include/asm/arch_gicv3.h

@@ -117,6 +117,7 @@ static inline u32 gic_read_iar(void)
 	u32 irqstat;
 
 	asm volatile("mrc " __stringify(ICC_IAR1) : "=r" (irqstat));
+	dsb(sy);
 	return irqstat;
 }
 

arch/arm/include/asm/xen/page-coherent.h

@@ -35,14 +35,21 @@ static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
 	     dma_addr_t dev_addr, unsigned long offset, size_t size,
 	     enum dma_data_direction dir, struct dma_attrs *attrs)
 {
-	bool local = XEN_PFN_DOWN(dev_addr) == page_to_xen_pfn(page);
+	unsigned long page_pfn = page_to_xen_pfn(page);
+	unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
+	unsigned long compound_pages =
+		(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
+	bool local = (page_pfn <= dev_pfn) &&
+		(dev_pfn - page_pfn < compound_pages);
+
 	/*
-	 * Dom0 is mapped 1:1, while the Linux page can be spanned accross
+	 * Dom0 is mapped 1:1, while the Linux page can span across
-	 * multiple Xen page, it's not possible to have a mix of local and
+	 * multiple Xen pages, it's not possible for it to contain a
-	 * foreign Xen page. So if the first xen_pfn == mfn the page is local
+	 * mix of local and foreign Xen pages. So if the first xen_pfn
-	 * otherwise it's a foreign page grant-mapped in dom0. If the page is
+	 * == mfn the page is local otherwise it's a foreign page
-	 * local we can safely call the native dma_ops function, otherwise we
+	 * grant-mapped in dom0. If the page is local we can safely
-	 * call the xen specific function.
+	 * call the native dma_ops function, otherwise we call the xen
+	 * specific function.
 	 */
 	if (local)
 		__generic_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);

arch/arm/kvm/mmio.c

@@ -206,7 +206,8 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
 	run->mmio.is_write	= is_write;
 	run->mmio.phys_addr	= fault_ipa;
 	run->mmio.len		= len;
-	memcpy(run->mmio.data, data_buf, len);
+	if (is_write)
+		memcpy(run->mmio.data, data_buf, len);
 
 	if (!ret) {
 		/* We handled the access successfully in the kernel. */

arch/arm/mach-omap2/board-generic.c

@@ -18,6 +18,7 @@
 
 #include <asm/setup.h>
 #include <asm/mach/arch.h>
+#include <asm/system_info.h>
 
 #include "common.h"
 
@@ -77,12 +78,31 @@ static const char *const n900_boards_compat[] __initconst = {
 	NULL,
 };
 
+/* Set system_rev from atags */
+static void __init rx51_set_system_rev(const struct tag *tags)
+{
+	const struct tag *tag;
+
+	if (tags->hdr.tag != ATAG_CORE)
+		return;
+
+	for_each_tag(tag, tags) {
+		if (tag->hdr.tag == ATAG_REVISION) {
+			system_rev = tag->u.revision.rev;
+			break;
+		}
+	}
+}
+
 /* Legacy userspace on Nokia N900 needs ATAGS exported in /proc/atags,
  * save them while the data is still not overwritten
  */
 static void __init rx51_reserve(void)
 {
-	save_atags((const struct tag *)(PAGE_OFFSET + 0x100));
+	const struct tag *tags = (const struct tag *)(PAGE_OFFSET + 0x100);
+
+	save_atags(tags);
+	rx51_set_system_rev(tags);
 	omap_reserve();
 }
 

arch/arm/mach-omap2/gpmc-onenand.c

@@ -101,10 +101,8 @@ static void omap2_onenand_set_async_mode(void __iomem *onenand_base)
 
 static void set_onenand_cfg(void __iomem *onenand_base)
 {
-	u32 reg;
+	u32 reg = ONENAND_SYS_CFG1_RDY | ONENAND_SYS_CFG1_INT;
 
-	reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
-	reg &= ~((0x7 << ONENAND_SYS_CFG1_BRL_SHIFT) | (0x7 << 9));
 	reg |=	(latency << ONENAND_SYS_CFG1_BRL_SHIFT) |
 		ONENAND_SYS_CFG1_BL_16;
 	if (onenand_flags & ONENAND_FLAG_SYNCREAD)
@@ -123,6 +121,7 @@ static void set_onenand_cfg(void __iomem *onenand_base)
 		reg |= ONENAND_SYS_CFG1_VHF;
 	else
 		reg &= ~ONENAND_SYS_CFG1_VHF;
+
 	writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
 }
 
@@ -289,6 +288,7 @@ static int omap2_onenand_setup_async(void __iomem *onenand_base)
 		}
 	}
 
+	onenand_async.sync_write = true;
 	omap2_onenand_calc_async_timings(&t);
 
 	ret = gpmc_cs_program_settings(gpmc_onenand_data->cs, &onenand_async);

arch/arm/mach-omap2/omap_device.c

@@ -191,12 +191,22 @@ static int _omap_device_notifier_call(struct notifier_block *nb,
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct omap_device *od;
+	int err;
 
 	switch (event) {
 	case BUS_NOTIFY_DEL_DEVICE:
 		if (pdev->archdata.od)
 			omap_device_delete(pdev->archdata.od);
 		break;
+	case BUS_NOTIFY_UNBOUND_DRIVER:
+		od = to_omap_device(pdev);
+		if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED)) {
+			dev_info(dev, "enabled after unload, idling\n");
+			err = omap_device_idle(pdev);
+			if (err)
+				dev_err(dev, "failed to idle\n");
+		}
+		break;
 	case BUS_NOTIFY_ADD_DEVICE:
 		if (pdev->dev.of_node)
 			omap_device_build_from_dt(pdev);
@@ -602,8 +612,10 @@ static int _od_runtime_resume(struct device *dev)
 	int ret;
 
 	ret = omap_device_enable(pdev);
-	if (ret)
+	if (ret) {
+		dev_err(dev, "use pm_runtime_put_sync_suspend() in driver?\n");
 		return ret;
+	}
 
 	return pm_generic_runtime_resume(dev);
 }

arch/arm/mach-shmobile/common.h

@@ -4,7 +4,6 @@
 extern void shmobile_init_delay(void);
 extern void shmobile_boot_vector(void);
 extern unsigned long shmobile_boot_fn;
-extern unsigned long shmobile_boot_arg;
 extern unsigned long shmobile_boot_size;
 extern void shmobile_smp_boot(void);
 extern void shmobile_smp_sleep(void);

arch/arm/mach-shmobile/headsmp-scu.S

@@ -38,9 +38,3 @@ ENTRY(shmobile_boot_scu)
 
 	b	secondary_startup
 ENDPROC(shmobile_boot_scu)
-
-	.text
-	.align	2
-	.globl	shmobile_scu_base
-shmobile_scu_base:
-	.space	4

arch/arm/mach-shmobile/headsmp.S

@@ -24,7 +24,6 @@
 	.arm
 	.align  12
 ENTRY(shmobile_boot_vector)
-	ldr     r0, 2f
 	ldr     r1, 1f
 	bx	r1
 
@@ -34,9 +33,6 @@ ENDPROC(shmobile_boot_vector)
 	.globl	shmobile_boot_fn
 shmobile_boot_fn:
 1:	.space	4
-	.globl	shmobile_boot_arg
-shmobile_boot_arg:
-2:	.space	4
 	.globl	shmobile_boot_size
 shmobile_boot_size:
 	.long	. - shmobile_boot_vector
@@ -46,13 +42,15 @@ shmobile_boot_size:
  */
 
 ENTRY(shmobile_smp_boot)
-						@ r0 = MPIDR_HWID_BITMASK
 	mrc	p15, 0, r1, c0, c0, 5		@ r1 = MPIDR
-	and	r0, r1, r0			@ r0 = cpu_logical_map() value
+	and	r0, r1, #0xffffff		@ MPIDR_HWID_BITMASK
+						@ r0 = cpu_logical_map() value
 	mov	r1, #0				@ r1 = CPU index
-	adr	r5, 1f				@ array of per-cpu mpidr values
+	adr	r2, 1f
-	adr	r6, 2f				@ array of per-cpu functions
+	ldmia	r2, {r5, r6, r7}
-	adr	r7, 3f				@ array of per-cpu arguments
+	add	r5, r5, r2			@ array of per-cpu mpidr values
+	add	r6, r6, r2			@ array of per-cpu functions
+	add	r7, r7, r2			@ array of per-cpu arguments
 
 shmobile_smp_boot_find_mpidr:
 	ldr	r8, [r5, r1, lsl #2]
@@ -80,12 +78,18 @@ ENTRY(shmobile_smp_sleep)
 	b	shmobile_smp_boot
 ENDPROC(shmobile_smp_sleep)
 
+	.align	2
+1:	.long	shmobile_smp_mpidr - .
+	.long	shmobile_smp_fn - 1b
+	.long	shmobile_smp_arg - 1b
+
+	.bss
 	.globl	shmobile_smp_mpidr
 shmobile_smp_mpidr:
-1:	.space	NR_CPUS * 4
+	.space	NR_CPUS * 4
 	.globl	shmobile_smp_fn
 shmobile_smp_fn:
-2:	.space	NR_CPUS * 4
+	.space	NR_CPUS * 4
 	.globl	shmobile_smp_arg
 shmobile_smp_arg:
-3:	.space	NR_CPUS * 4
+	.space	NR_CPUS * 4

arch/arm/mach-shmobile/platsmp-apmu.c

@@ -123,7 +123,6 @@ void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
 {
 	/* install boot code shared by all CPUs */
 	shmobile_boot_fn = virt_to_phys(shmobile_smp_boot);
-	shmobile_boot_arg = MPIDR_HWID_BITMASK;
 
 	/* perform per-cpu setup */
 	apmu_parse_cfg(apmu_init_cpu, apmu_config, num);

arch/arm/mach-shmobile/platsmp-scu.c

@@ -17,6 +17,9 @@
 #include <asm/smp_scu.h>
 #include "common.h"
 
+
+void __iomem *shmobile_scu_base;
+
 static int shmobile_smp_scu_notifier_call(struct notifier_block *nfb,
 					  unsigned long action, void *hcpu)
 {
@@ -41,7 +44,6 @@ void __init shmobile_smp_scu_prepare_cpus(unsigned int max_cpus)
 {
 	/* install boot code shared by all CPUs */
 	shmobile_boot_fn = virt_to_phys(shmobile_smp_boot);
-	shmobile_boot_arg = MPIDR_HWID_BITMASK;
 
 	/* enable SCU and cache coherency on booting CPU */
 	scu_enable(shmobile_scu_base);

arch/arm/mach-shmobile/smp-r8a7779.c

@@ -92,8 +92,6 @@ static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
 {
 	/* Map the reset vector (in headsmp-scu.S, headsmp.S) */
 	__raw_writel(__pa(shmobile_boot_vector), AVECR);
-	shmobile_boot_fn = virt_to_phys(shmobile_boot_scu);
-	shmobile_boot_arg = (unsigned long)shmobile_scu_base;
 
 	/* setup r8a7779 specific SCU bits */
 	shmobile_scu_base = IOMEM(R8A7779_SCU_BASE);

arch/arm/mm/mmap.c

@@ -173,7 +173,7 @@ unsigned long arch_mmap_rnd(void)
 {
 	unsigned long rnd;
 
-	rnd = (unsigned long)get_random_int() & ((1 << mmap_rnd_bits) - 1);
+	rnd = get_random_long() & ((1UL << mmap_rnd_bits) - 1);
 
 	return rnd << PAGE_SHIFT;
 }

arch/arm64/Makefile

@@ -88,7 +88,7 @@ Image: vmlinux
 Image.%: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
-zinstall install: vmlinux
+zinstall install:
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
 %.dtb: scripts

arch/arm64/boot/Makefile

@@ -34,10 +34,10 @@ $(obj)/Image.lzma: $(obj)/Image FORCE
 $(obj)/Image.lzo: $(obj)/Image FORCE
 	$(call if_changed,lzo)
 
-install: $(obj)/Image
+install:
 	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
 	$(obj)/Image System.map "$(INSTALL_PATH)"
 
-zinstall: $(obj)/Image.gz
+zinstall:
 	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
 	$(obj)/Image.gz System.map "$(INSTALL_PATH)"

arch/arm64/boot/install.sh

@@ -20,6 +20,20 @@
 #   $4 - default install path (blank if root directory)
 #
 
+verify () {
+	if [ ! -f "$1" ]; then
+		echo ""                                                   1>&2
+		echo " *** Missing file: $1"                              1>&2
+		echo ' *** You need to run "make" before "make install".' 1>&2
+		echo ""                                                   1>&2
+		exit 1
+	fi
+}
+
+# Make sure the files actually exist
+verify "$2"
+verify "$3"
+
 # User may have a custom install script
 if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
 if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi

arch/arm64/crypto/aes-glue.c

@@ -294,7 +294,7 @@ static struct crypto_alg aes_algs[] = { {
 	.cra_blkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
+		.ivsize		= 0,
 		.setkey		= aes_setkey,
 		.encrypt	= ecb_encrypt,
 		.decrypt	= ecb_decrypt,
@@ -371,7 +371,7 @@ static struct crypto_alg aes_algs[] = { {
 	.cra_ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
+		.ivsize		= 0,
 		.setkey		= ablk_set_key,
 		.encrypt	= ablk_encrypt,
 		.decrypt	= ablk_decrypt,

arch/arm64/kernel/debug-monitors.c

@@ -226,11 +226,28 @@ static int call_step_hook(struct pt_regs *regs, unsigned int esr)
 	return retval;
 }
 
+static void send_user_sigtrap(int si_code)
+{
+	struct pt_regs *regs = current_pt_regs();
+	siginfo_t info = {
+		.si_signo	= SIGTRAP,
+		.si_errno	= 0,
+		.si_code	= si_code,
+		.si_addr	= (void __user *)instruction_pointer(regs),
+	};
+
+	if (WARN_ON(!user_mode(regs)))
+		return;
+
+	if (interrupts_enabled(regs))
+		local_irq_enable();
+
+	force_sig_info(SIGTRAP, &info, current);
+}
+
 static int single_step_handler(unsigned long addr, unsigned int esr,
 			       struct pt_regs *regs)
 {
-	siginfo_t info;
-
 	/*
 	 * If we are stepping a pending breakpoint, call the hw_breakpoint
 	 * handler first.
@@ -239,11 +256,7 @@ static int single_step_handler(unsigned long addr, unsigned int esr,
 		return 0;
 
 	if (user_mode(regs)) {
-		info.si_signo = SIGTRAP;
+		send_user_sigtrap(TRAP_HWBKPT);
-		info.si_errno = 0;
-		info.si_code  = TRAP_HWBKPT;
-		info.si_addr  = (void __user *)instruction_pointer(regs);
-		force_sig_info(SIGTRAP, &info, current);
 
 		/*
 		 * ptrace will disable single step unless explicitly
@@ -307,17 +320,8 @@ static int call_break_hook(struct pt_regs *regs, unsigned int esr)
 static int brk_handler(unsigned long addr, unsigned int esr,
 		       struct pt_regs *regs)
 {
-	siginfo_t info;
-
 	if (user_mode(regs)) {
-		info = (siginfo_t) {
+		send_user_sigtrap(TRAP_BRKPT);
-			.si_signo = SIGTRAP,
-			.si_errno = 0,
-			.si_code  = TRAP_BRKPT,
-			.si_addr  = (void __user *)instruction_pointer(regs),
-		};
-
-		force_sig_info(SIGTRAP, &info, current);
 	} else if (call_break_hook(regs, esr) != DBG_HOOK_HANDLED) {
 		pr_warning("Unexpected kernel BRK exception at EL1\n");
 		return -EFAULT;
@@ -328,7 +332,6 @@ static int brk_handler(unsigned long addr, unsigned int esr,
 
 int aarch32_break_handler(struct pt_regs *regs)
 {
-	siginfo_t info;
 	u32 arm_instr;
 	u16 thumb_instr;
 	bool bp = false;
@@ -359,14 +362,7 @@ int aarch32_break_handler(struct pt_regs *regs)
 	if (!bp)
 		return -EFAULT;
 
-	info = (siginfo_t) {
+	send_user_sigtrap(TRAP_BRKPT);
-		.si_signo = SIGTRAP,
-		.si_errno = 0,
-		.si_code  = TRAP_BRKPT,
-		.si_addr  = pc,
-	};
-
-	force_sig_info(SIGTRAP, &info, current);
 	return 0;
 }
 

arch/arm64/kernel/image.h

@@ -89,6 +89,7 @@ __efistub_memcpy		= KALLSYMS_HIDE(__pi_memcpy);
 __efistub_memmove		= KALLSYMS_HIDE(__pi_memmove);
 __efistub_memset		= KALLSYMS_HIDE(__pi_memset);
 __efistub_strlen		= KALLSYMS_HIDE(__pi_strlen);
+__efistub_strnlen		= KALLSYMS_HIDE(__pi_strnlen);
 __efistub_strcmp		= KALLSYMS_HIDE(__pi_strcmp);
 __efistub_strncmp		= KALLSYMS_HIDE(__pi_strncmp);
 __efistub___flush_dcache_area	= KALLSYMS_HIDE(__pi___flush_dcache_area);

arch/arm64/kernel/stacktrace.c

@@ -44,14 +44,13 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
 	unsigned long irq_stack_ptr;
 
 	/*
-	 * Use raw_smp_processor_id() to avoid false-positives from
+	 * Switching between stacks is valid when tracing current and in
-	 * CONFIG_DEBUG_PREEMPT. get_wchan() calls unwind_frame() on sleeping
+	 * non-preemptible context.
-	 * task stacks, we can be pre-empted in this case, so
-	 * {raw_,}smp_processor_id() may give us the wrong value. Sleeping
-	 * tasks can't ever be on an interrupt stack, so regardless of cpu,
-	 * the checks will always fail.
 	 */
-	irq_stack_ptr = IRQ_STACK_PTR(raw_smp_processor_id());
+	if (tsk == current && !preemptible())
+		irq_stack_ptr = IRQ_STACK_PTR(smp_processor_id());
+	else
+		irq_stack_ptr = 0;
 
 	low  = frame->sp;
 	/* irq stacks are not THREAD_SIZE aligned */
@@ -64,8 +63,8 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
 		return -EINVAL;
 
 	frame->sp = fp + 0x10;
-	frame->fp = *(unsigned long *)(fp);
+	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp));
-	frame->pc = *(unsigned long *)(fp + 8);
+	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp + 8));
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 	if (tsk && tsk->ret_stack &&

arch/arm64/kernel/traps.c

@@ -146,9 +146,18 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
 static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 {
 	struct stackframe frame;
-	unsigned long irq_stack_ptr = IRQ_STACK_PTR(smp_processor_id());
+	unsigned long irq_stack_ptr;
 	int skip;
 
+	/*
+	 * Switching between stacks is valid when tracing current and in
+	 * non-preemptible context.
+	 */
+	if (tsk == current && !preemptible())
+		irq_stack_ptr = IRQ_STACK_PTR(smp_processor_id());
+	else
+		irq_stack_ptr = 0;
+
 	pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);
 
 	if (!tsk)

arch/arm64/kvm/hyp/vgic-v3-sr.c

@@ -147,16 +147,6 @@ void __hyp_text __vgic_v3_restore_state(struct kvm_vcpu *vcpu)
 	max_lr_idx = vtr_to_max_lr_idx(val);
 	nr_pri_bits = vtr_to_nr_pri_bits(val);
 
-	switch (nr_pri_bits) {
-	case 7:
-		 write_gicreg(cpu_if->vgic_ap1r[3], ICH_AP1R3_EL2);
-		 write_gicreg(cpu_if->vgic_ap1r[2], ICH_AP1R2_EL2);
-	case 6:
-		 write_gicreg(cpu_if->vgic_ap1r[1], ICH_AP1R1_EL2);
-	default:
-		 write_gicreg(cpu_if->vgic_ap1r[0], ICH_AP1R0_EL2);
-	}	 	                           
-		 	                           
 	switch (nr_pri_bits) {
 	case 7:
 		 write_gicreg(cpu_if->vgic_ap0r[3], ICH_AP0R3_EL2);
@@ -167,6 +157,16 @@ void __hyp_text __vgic_v3_restore_state(struct kvm_vcpu *vcpu)
 		 write_gicreg(cpu_if->vgic_ap0r[0], ICH_AP0R0_EL2);
 	}
 
+	switch (nr_pri_bits) {
+	case 7:
+		 write_gicreg(cpu_if->vgic_ap1r[3], ICH_AP1R3_EL2);
+		 write_gicreg(cpu_if->vgic_ap1r[2], ICH_AP1R2_EL2);
+	case 6:
+		 write_gicreg(cpu_if->vgic_ap1r[1], ICH_AP1R1_EL2);
+	default:
+		 write_gicreg(cpu_if->vgic_ap1r[0], ICH_AP1R0_EL2);
+	}
+
 	switch (max_lr_idx) {
 	case 15:
 		write_gicreg(cpu_if->vgic_lr[VGIC_V3_LR_INDEX(15)], ICH_LR15_EL2);

arch/arm64/lib/strnlen.S

@@ -168,4 +168,4 @@ CPU_LE( lsr	tmp2, tmp2, tmp4 )	/* Shift (tmp1 & 63).  */
 .Lhit_limit:
 	mov	len, limit
 	ret
-ENDPROC(strnlen)
+ENDPIPROC(strnlen)

arch/arm64/mm/dma-mapping.c

@@ -933,6 +933,10 @@ static int __init __iommu_dma_init(void)
 		ret = register_iommu_dma_ops_notifier(&platform_bus_type);
 	if (!ret)
 		ret = register_iommu_dma_ops_notifier(&amba_bustype);
+
+	/* handle devices queued before this arch_initcall */
+	if (!ret)
+		__iommu_attach_notifier(NULL, BUS_NOTIFY_ADD_DEVICE, NULL);
 	return ret;
 }
 arch_initcall(__iommu_dma_init);

arch/arm64/mm/fault.c

@@ -371,6 +371,13 @@ static int __kprobes do_translation_fault(unsigned long addr,
 	return 0;
 }
 
+static int do_alignment_fault(unsigned long addr, unsigned int esr,
+			      struct pt_regs *regs)
+{
+	do_bad_area(addr, esr, regs);
+	return 0;
+}
+
 /*
  * This abort handler always returns "fault".
  */
@@ -418,7 +425,7 @@ static struct fault_info {
 	{ do_bad,		SIGBUS,  0,		"synchronous parity error (translation table walk)" },
 	{ do_bad,		SIGBUS,  0,		"synchronous parity error (translation table walk)" },
 	{ do_bad,		SIGBUS,  0,		"unknown 32"			},
-	{ do_bad,		SIGBUS,  BUS_ADRALN,	"alignment fault"		},
+	{ do_alignment_fault,	SIGBUS,  BUS_ADRALN,	"alignment fault"		},
 	{ do_bad,		SIGBUS,  0,		"unknown 34"			},
 	{ do_bad,		SIGBUS,  0,		"unknown 35"			},
 	{ do_bad,		SIGBUS,  0,		"unknown 36"			},

arch/arm64/mm/mmap.c

@@ -53,10 +53,10 @@ unsigned long arch_mmap_rnd(void)
 
 #ifdef CONFIG_COMPAT
 	if (test_thread_flag(TIF_32BIT))
-		rnd = (unsigned long)get_random_int() & ((1 << mmap_rnd_compat_bits) - 1);
+		rnd = get_random_long() & ((1UL << mmap_rnd_compat_bits) - 1);
 	else
 #endif
-		rnd = (unsigned long)get_random_int() & ((1 << mmap_rnd_bits) - 1);
+		rnd = get_random_long() & ((1UL << mmap_rnd_bits) - 1);
 	return rnd << PAGE_SHIFT;
 }
 

arch/mips/mm/mmap.c

@@ -146,7 +146,7 @@ unsigned long arch_mmap_rnd(void)
 {
 	unsigned long rnd;
 
-	rnd = (unsigned long)get_random_int();
+	rnd = get_random_long();
 	rnd <<= PAGE_SHIFT;
 	if (TASK_IS_32BIT_ADDR)
 		rnd &= 0xfffffful;
@@ -174,7 +174,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 
 static inline unsigned long brk_rnd(void)
 {
-	unsigned long rnd = get_random_int();
+	unsigned long rnd = get_random_long();
 
 	rnd = rnd << PAGE_SHIFT;
 	/* 8MB for 32bit, 256MB for 64bit */

arch/powerpc/Kconfig

@@ -557,7 +557,7 @@ choice
 
 config PPC_4K_PAGES
 	bool "4k page size"
-	select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
+	select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
 
 config PPC_16K_PAGES
 	bool "16k page size"
@@ -566,7 +566,7 @@ config PPC_16K_PAGES
 config PPC_64K_PAGES
 	bool "64k page size"
 	depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
-	select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
+	select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
 
 config PPC_256K_PAGES
 	bool "256k page size"

arch/powerpc/include/asm/book3s/64/pgtable.h

@@ -281,6 +281,10 @@ extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
 extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
 			    pmd_t *pmdp);
 
+#define __HAVE_ARCH_PMDP_HUGE_SPLIT_PREPARE
+extern void pmdp_huge_split_prepare(struct vm_area_struct *vma,
+				    unsigned long address, pmd_t *pmdp);
+
 #define pmd_move_must_withdraw pmd_move_must_withdraw
 struct spinlock;
 static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,

arch/powerpc/include/asm/eeh.h

@@ -81,6 +81,7 @@ struct pci_dn;
 #define EEH_PE_KEEP		(1 << 8)	/* Keep PE on hotplug	*/
 #define EEH_PE_CFG_RESTRICTED	(1 << 9)	/* Block config on error */
 #define EEH_PE_REMOVED		(1 << 10)	/* Removed permanently	*/
+#define EEH_PE_PRI_BUS		(1 << 11)	/* Cached primary bus   */
 
 struct eeh_pe {
 	int type;			/* PE type: PHB/Bus/Device	*/

arch/powerpc/include/asm/trace.h

@@ -57,12 +57,14 @@ DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_exit,
 extern void hcall_tracepoint_regfunc(void);
 extern void hcall_tracepoint_unregfunc(void);
 
-TRACE_EVENT_FN(hcall_entry,
+TRACE_EVENT_FN_COND(hcall_entry,
 
 	TP_PROTO(unsigned long opcode, unsigned long *args),
 
 	TP_ARGS(opcode, args),
 
+	TP_CONDITION(cpu_online(raw_smp_processor_id())),
+
 	TP_STRUCT__entry(
 		__field(unsigned long, opcode)
 	),
@@ -76,13 +78,15 @@ TRACE_EVENT_FN(hcall_entry,
 	hcall_tracepoint_regfunc, hcall_tracepoint_unregfunc
 );
 
-TRACE_EVENT_FN(hcall_exit,
+TRACE_EVENT_FN_COND(hcall_exit,
 
 	TP_PROTO(unsigned long opcode, unsigned long retval,
 		unsigned long *retbuf),
 
 	TP_ARGS(opcode, retval, retbuf),
 
+	TP_CONDITION(cpu_online(raw_smp_processor_id())),
+
 	TP_STRUCT__entry(
 		__field(unsigned long, opcode)
 		__field(unsigned long, retval)

arch/powerpc/kernel/eeh_driver.c

@@ -418,8 +418,7 @@ static void *eeh_rmv_device(void *data, void *userdata)
 		eeh_pcid_put(dev);
 		if (driver->err_handler &&
 		    driver->err_handler->error_detected &&
-		    driver->err_handler->slot_reset &&
+		    driver->err_handler->slot_reset)
-		    driver->err_handler->resume)
 			return NULL;
 	}
 
@@ -564,6 +563,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
 	 */
 	eeh_pe_state_mark(pe, EEH_PE_KEEP);
 	if (bus) {
+		eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
 		pci_lock_rescan_remove();
 		pcibios_remove_pci_devices(bus);
 		pci_unlock_rescan_remove();
@@ -803,6 +803,7 @@ perm_error:
 	 * the their PCI config any more.
 	 */
 	if (frozen_bus) {
+		eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
 		eeh_pe_dev_mode_mark(pe, EEH_DEV_REMOVED);
 
 		pci_lock_rescan_remove();
@@ -886,6 +887,7 @@ static void eeh_handle_special_event(void)
 					continue;
 
 				/* Notify all devices to be down */
+				eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
 				bus = eeh_pe_bus_get(phb_pe);
 				eeh_pe_dev_traverse(pe,
 					eeh_report_failure, NULL);

arch/powerpc/kernel/eeh_pe.c

@@ -928,7 +928,7 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe)
 		bus = pe->phb->bus;
 	} else if (pe->type & EEH_PE_BUS ||
 		   pe->type & EEH_PE_DEVICE) {
-		if (pe->bus) {
+		if (pe->state & EEH_PE_PRI_BUS) {
 			bus = pe->bus;
 			goto out;
 		}

arch/powerpc/kernel/module_64.c

@@ -340,7 +340,7 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
 			if (name[0] == '.') {
 				if (strcmp(name+1, "TOC.") == 0)
 					syms[i].st_shndx = SHN_ABS;
-				memmove(name, name+1, strlen(name));
+				syms[i].st_name++;
 			}
 		}
 	}

arch/powerpc/kernel/process.c

@@ -1768,9 +1768,9 @@ static inline unsigned long brk_rnd(void)
 
 	/* 8MB for 32bit, 1GB for 64bit */
 	if (is_32bit_task())
-		rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
+		rnd = (get_random_long() % (1UL<<(23-PAGE_SHIFT)));
 	else
-		rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
+		rnd = (get_random_long() % (1UL<<(30-PAGE_SHIFT)));
 
 	return rnd << PAGE_SHIFT;
 }

arch/powerpc/mm/hash64_64k.c

@@ -111,7 +111,13 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
 	 */
 	if (!(old_pte & _PAGE_COMBO)) {
 		flush_hash_page(vpn, rpte, MMU_PAGE_64K, ssize, flags);
-		old_pte &= ~_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND;
+		/*
+		 * clear the old slot details from the old and new pte.
+		 * On hash insert failure we use old pte value and we don't
+		 * want slot information there if we have a insert failure.
+		 */
+		old_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND);
+		new_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND);
 		goto htab_insert_hpte;
 	}
 	/*

arch/powerpc/mm/hugepage-hash64.c

@@ -78,9 +78,19 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
 		 * base page size. This is because demote_segment won't flush
 		 * hash page table entries.
 		 */
-		if ((old_pmd & _PAGE_HASHPTE) && !(old_pmd & _PAGE_COMBO))
+		if ((old_pmd & _PAGE_HASHPTE) && !(old_pmd & _PAGE_COMBO)) {
 			flush_hash_hugepage(vsid, ea, pmdp, MMU_PAGE_64K,
 					    ssize, flags);
+			/*
+			 * With THP, we also clear the slot information with
+			 * respect to all the 64K hash pte mapping the 16MB
+			 * page. They are all invalid now. This make sure we
+			 * don't find the slot valid when we fault with 4k
+			 * base page size.
+			 *
+			 */
+			memset(hpte_slot_array, 0, PTE_FRAG_SIZE);
+		}
 	}
 
 	valid = hpte_valid(hpte_slot_array, index);

arch/powerpc/mm/mmap.c

@@ -59,9 +59,9 @@ unsigned long arch_mmap_rnd(void)
 
 	/* 8MB for 32bit, 1GB for 64bit */
 	if (is_32bit_task())
-		rnd = (unsigned long)get_random_int() % (1<<(23-PAGE_SHIFT));
+		rnd = get_random_long() % (1<<(23-PAGE_SHIFT));
 	else
-		rnd = (unsigned long)get_random_int() % (1<<(30-PAGE_SHIFT));
+		rnd = get_random_long() % (1UL<<(30-PAGE_SHIFT));
 
 	return rnd << PAGE_SHIFT;
 }

arch/powerpc/mm/pgtable_64.c

@@ -646,6 +646,28 @@ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
 	return pgtable;
 }
 
+void pmdp_huge_split_prepare(struct vm_area_struct *vma,
+			     unsigned long address, pmd_t *pmdp)
+{
+	VM_BUG_ON(address & ~HPAGE_PMD_MASK);
+	VM_BUG_ON(REGION_ID(address) != USER_REGION_ID);
+
+	/*
+	 * We can't mark the pmd none here, because that will cause a race
+	 * against exit_mmap. We need to continue mark pmd TRANS HUGE, while
+	 * we spilt, but at the same time we wan't rest of the ppc64 code
+	 * not to insert hash pte on this, because we will be modifying
+	 * the deposited pgtable in the caller of this function. Hence
+	 * clear the _PAGE_USER so that we move the fault handling to
+	 * higher level function and that will serialize against ptl.
+	 * We need to flush existing hash pte entries here even though,
+	 * the translation is still valid, because we will withdraw
+	 * pgtable_t after this.
+	 */
+	pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_USER, 0);
+}
+
+
 /*
  * set a new huge pmd. We should not be called for updating
  * an existing pmd entry. That should go via pmd_hugepage_update.
@@ -663,10 +685,20 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
 	return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd));
 }
 
+/*
+ * We use this to invalidate a pmdp entry before switching from a
+ * hugepte to regular pmd entry.
+ */
 void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
 		     pmd_t *pmdp)
 {
 	pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_PRESENT, 0);
+
+	/*
+	 * This ensures that generic code that rely on IRQ disabling
+	 * to prevent a parallel THP split work as expected.
+	 */
+	kick_all_cpus_sync();
 }
 
 /*

arch/powerpc/platforms/powernv/eeh-powernv.c

@@ -444,9 +444,12 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
 	 * PCI devices of the PE are expected to be removed prior
 	 * to PE reset.
 	 */
-	if (!edev->pe->bus)
+	if (!(edev->pe->state & EEH_PE_PRI_BUS)) {
 		edev->pe->bus = pci_find_bus(hose->global_number,
 					     pdn->busno);
+		if (edev->pe->bus)
+			edev->pe->state |= EEH_PE_PRI_BUS;
+	}
 
 	/*
 	 * Enable EEH explicitly so that we will do EEH check

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -3180,6 +3180,7 @@ static void pnv_pci_ioda_shutdown(struct pci_controller *hose)
 
 static const struct pci_controller_ops pnv_pci_ioda_controller_ops = {
        .dma_dev_setup = pnv_pci_dma_dev_setup,
+       .dma_bus_setup = pnv_pci_dma_bus_setup,
 #ifdef CONFIG_PCI_MSI
        .setup_msi_irqs = pnv_setup_msi_irqs,
        .teardown_msi_irqs = pnv_teardown_msi_irqs,

arch/powerpc/platforms/powernv/pci.c

@@ -599,6 +599,9 @@ int pnv_tce_build(struct iommu_table *tbl, long index, long npages,
 	u64 rpn = __pa(uaddr) >> tbl->it_page_shift;
 	long i;
 
+	if (proto_tce & TCE_PCI_WRITE)
+		proto_tce |= TCE_PCI_READ;
+
 	for (i = 0; i < npages; i++) {
 		unsigned long newtce = proto_tce |
 			((rpn + i) << tbl->it_page_shift);
@@ -620,6 +623,9 @@ int pnv_tce_xchg(struct iommu_table *tbl, long index,
 
 	BUG_ON(*hpa & ~IOMMU_PAGE_MASK(tbl));
 
+	if (newtce & TCE_PCI_WRITE)
+		newtce |= TCE_PCI_READ;
+
 	oldtce = xchg(pnv_tce(tbl, idx), cpu_to_be64(newtce));
 	*hpa = be64_to_cpu(oldtce) & ~(TCE_PCI_READ | TCE_PCI_WRITE);
 	*direction = iommu_tce_direction(oldtce);
@@ -760,6 +766,26 @@ void pnv_pci_dma_dev_setup(struct pci_dev *pdev)
 		phb->dma_dev_setup(phb, pdev);
 }
 
+void pnv_pci_dma_bus_setup(struct pci_bus *bus)
+{
+	struct pci_controller *hose = bus->sysdata;
+	struct pnv_phb *phb = hose->private_data;
+	struct pnv_ioda_pe *pe;
+
+	list_for_each_entry(pe, &phb->ioda.pe_list, list) {
+		if (!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)))
+			continue;
+
+		if (!pe->pbus)
+			continue;
+
+		if (bus->number == ((pe->rid >> 8) & 0xFF)) {
+			pe->pbus = bus;
+			break;
+		}
+	}
+}
+
 void pnv_pci_shutdown(void)
 {
 	struct pci_controller *hose;

arch/powerpc/platforms/powernv/pci.h

@@ -242,6 +242,7 @@ extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
 extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option);
 
 extern void pnv_pci_dma_dev_setup(struct pci_dev *pdev);
+extern void pnv_pci_dma_bus_setup(struct pci_bus *bus);
 extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
 extern void pnv_teardown_msi_irqs(struct pci_dev *pdev);
 

arch/s390/include/asm/fpu/internal.h

@@ -40,6 +40,7 @@ static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
 static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
 {
 	fpregs->pad = 0;
+	fpregs->fpc = fpu->fpc;
 	if (MACHINE_HAS_VX)
 		convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs);
 	else
@@ -49,6 +50,7 @@ static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
 
 static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu)
 {
+	fpu->fpc = fpregs->fpc;
 	if (MACHINE_HAS_VX)
 		convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs);
 	else

arch/s390/include/asm/livepatch.h

@@ -37,7 +37,7 @@ static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
 	regs->psw.addr = ip;
 }
 #else
-#error Live patching support is disabled; check CONFIG_LIVEPATCH
+#error Include linux/livepatch.h, not asm/livepatch.h
 #endif
 
 #endif

arch/s390/kernel/compat_signal.c

@@ -271,7 +271,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,
 
 	/* Restore high gprs from signal stack */
 	if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high,
-			     sizeof(&sregs_ext->gprs_high)))
+			     sizeof(sregs_ext->gprs_high)))
 		return -EFAULT;
 	for (i = 0; i < NUM_GPRS; i++)
 		*(__u32 *)&regs->gprs[i] = gprs_high[i];

arch/s390/kernel/perf_event.c

@@ -260,12 +260,13 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry,
 void perf_callchain_kernel(struct perf_callchain_entry *entry,
 			   struct pt_regs *regs)
 {
-	unsigned long head;
+	unsigned long head, frame_size;
 	struct stack_frame *head_sf;
 
 	if (user_mode(regs))
 		return;
 
+	frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
 	head = regs->gprs[15];
 	head_sf = (struct stack_frame *) head;
 
@@ -273,8 +274,9 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
 		return;
 
 	head = head_sf->back_chain;
-	head = __store_trace(entry, head, S390_lowcore.async_stack - ASYNC_SIZE,
+	head = __store_trace(entry, head,
-			     S390_lowcore.async_stack);
+			     S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
+			     S390_lowcore.async_stack + frame_size);
 
 	__store_trace(entry, head, S390_lowcore.thread_info,
 		      S390_lowcore.thread_info + THREAD_SIZE);

arch/s390/kernel/stacktrace.c

@@ -59,26 +59,32 @@ static unsigned long save_context_stack(struct stack_trace *trace,
 	}
 }
 
-void save_stack_trace(struct stack_trace *trace)
+static void __save_stack_trace(struct stack_trace *trace, unsigned long sp)
 {
-	register unsigned long sp asm ("15");
+	unsigned long new_sp, frame_size;
-	unsigned long orig_sp, new_sp;
 
-	orig_sp = sp;
+	frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
-	new_sp = save_context_stack(trace, orig_sp,
+	new_sp = save_context_stack(trace, sp,
-				    S390_lowcore.panic_stack - PAGE_SIZE,
+			S390_lowcore.panic_stack + frame_size - PAGE_SIZE,
-				    S390_lowcore.panic_stack, 1);
+			S390_lowcore.panic_stack + frame_size, 1);
-	if (new_sp != orig_sp)
-		return;
 	new_sp = save_context_stack(trace, new_sp,
-				    S390_lowcore.async_stack - ASYNC_SIZE,
+			S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
-				    S390_lowcore.async_stack, 1);
+			S390_lowcore.async_stack + frame_size, 1);
-	if (new_sp != orig_sp)
-		return;
 	save_context_stack(trace, new_sp,
 			   S390_lowcore.thread_info,
 			   S390_lowcore.thread_info + THREAD_SIZE, 1);
 }
+
+void save_stack_trace(struct stack_trace *trace)
+{
+	register unsigned long r15 asm ("15");
+	unsigned long sp;
+
+	sp = r15;
+	__save_stack_trace(trace, sp);
+	if (trace->nr_entries < trace->max_entries)
+		trace->entries[trace->nr_entries++] = ULONG_MAX;
+}
 EXPORT_SYMBOL_GPL(save_stack_trace);
 
 void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
@@ -86,6 +92,10 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
 	unsigned long sp, low, high;
 
 	sp = tsk->thread.ksp;
+	if (tsk == current) {
+		/* Get current stack pointer. */
+		asm volatile("la %0,0(15)" : "=a" (sp));
+	}
 	low = (unsigned long) task_stack_page(tsk);
 	high = (unsigned long) task_pt_regs(tsk);
 	save_context_stack(trace, sp, low, high, 0);
@@ -93,3 +103,14 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
 		trace->entries[trace->nr_entries++] = ULONG_MAX;
 }
 EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
+
+void save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)
+{
+	unsigned long sp;
+
+	sp = kernel_stack_pointer(regs);
+	__save_stack_trace(trace, sp);
+	if (trace->nr_entries < trace->max_entries)
+		trace->entries[trace->nr_entries++] = ULONG_MAX;
+}
+EXPORT_SYMBOL_GPL(save_stack_trace_regs);

arch/s390/kernel/trace.c

@@ -18,6 +18,9 @@ void trace_s390_diagnose_norecursion(int diag_nr)
 	unsigned long flags;
 	unsigned int *depth;
 
+	/* Avoid lockdep recursion. */
+	if (IS_ENABLED(CONFIG_LOCKDEP))
+		return;
 	local_irq_save(flags);
 	depth = this_cpu_ptr(&diagnose_trace_depth);
 	if (*depth == 0) {

arch/s390/mm/maccess.c

@@ -93,15 +93,19 @@ static int __memcpy_real(void *dest, void *src, size_t count)
  */
 int memcpy_real(void *dest, void *src, size_t count)
 {
+	int irqs_disabled, rc;
 	unsigned long flags;
-	int rc;
 
 	if (!count)
 		return 0;
-	local_irq_save(flags);
+	flags = __arch_local_irq_stnsm(0xf8UL);
-	__arch_local_irq_stnsm(0xfbUL);
+	irqs_disabled = arch_irqs_disabled_flags(flags);
+	if (!irqs_disabled)
+		trace_hardirqs_off();
 	rc = __memcpy_real(dest, src, count);
-	local_irq_restore(flags);
+	if (!irqs_disabled)
+		trace_hardirqs_on();
+	__arch_local_irq_ssm(flags);
 	return rc;
 }
 

arch/s390/oprofile/backtrace.c

@@ -54,12 +54,13 @@ __show_trace(unsigned int *depth, unsigned long sp,
 
 void s390_backtrace(struct pt_regs * const regs, unsigned int depth)
 {
-	unsigned long head;
+	unsigned long head, frame_size;
 	struct stack_frame* head_sf;
 
 	if (user_mode(regs))
 		return;
 
+	frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
 	head = regs->gprs[15];
 	head_sf = (struct stack_frame*)head;
 
@@ -68,8 +69,9 @@ void s390_backtrace(struct pt_regs * const regs, unsigned int depth)
 
 	head = head_sf->back_chain;
 
-	head = __show_trace(&depth, head, S390_lowcore.async_stack - ASYNC_SIZE,
+	head = __show_trace(&depth, head,
-			    S390_lowcore.async_stack);
+			    S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
+			    S390_lowcore.async_stack + frame_size);
 
 	__show_trace(&depth, head, S390_lowcore.thread_info,
 		     S390_lowcore.thread_info + THREAD_SIZE);

arch/sparc/kernel/sys_sparc_64.c

@@ -264,7 +264,7 @@ static unsigned long mmap_rnd(void)
 	unsigned long rnd = 0UL;
 
 	if (current->flags & PF_RANDOMIZE) {
-		unsigned long val = get_random_int();
+		unsigned long val = get_random_long();
 		if (test_thread_flag(TIF_32BIT))
 			rnd = (val % (1UL << (23UL-PAGE_SHIFT)));
 		else

arch/x86/Kconfig

@@ -778,8 +778,8 @@ config HPET_TIMER
 	  HPET is the next generation timer replacing legacy 8254s.
 	  The HPET provides a stable time base on SMP
 	  systems, unlike the TSC, but it is more expensive to access,
-	  as it is off-chip.  You can find the HPET spec at
+	  as it is off-chip.  The interface used is documented
-	  <http://www.intel.com/hardwaredesign/hpetspec_1.pdf>.
+	  in the HPET spec, revision 1.
 
 	  You can safely choose Y here.  However, HPET will only be
 	  activated if the platform and the BIOS support this feature.

arch/x86/entry/entry_32.S

@@ -294,6 +294,7 @@ sysenter_past_esp:
 	pushl	$__USER_DS		/* pt_regs->ss */
 	pushl	%ebp			/* pt_regs->sp (stashed in bp) */
 	pushfl				/* pt_regs->flags (except IF = 0) */
+	ASM_CLAC			/* Clear AC after saving FLAGS */
 	orl	$X86_EFLAGS_IF, (%esp)	/* Fix IF */
 	pushl	$__USER_CS		/* pt_regs->cs */
 	pushl	$0			/* pt_regs->ip = 0 (placeholder) */

arch/x86/entry/entry_64_compat.S

@@ -261,6 +261,7 @@ ENTRY(entry_INT80_compat)
 	 * Interrupts are off on entry.
 	 */
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
+	ASM_CLAC			/* Do this early to minimize exposure */
 	SWAPGS
 
 	/*

arch/x86/include/asm/livepatch.h

@@ -41,7 +41,7 @@ static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
 	regs->ip = ip;
 }
 #else
-#error Live patching support is disabled; check CONFIG_LIVEPATCH
+#error Include linux/livepatch.h, not asm/livepatch.h
 #endif
 
 #endif /* _ASM_X86_LIVEPATCH_H */