diff options
Diffstat (limited to 'arch')
52 files changed, 2637 insertions, 260 deletions
diff --git a/arch/arm/configs/lsk_defconfig b/arch/arm/configs/lsk_defconfig new file mode 100644 index 000000000000..5dce9050d229 --- /dev/null +++ b/arch/arm/configs/lsk_defconfig @@ -0,0 +1,932 @@ +CONFIG_SYSVIPC=y +CONFIG_FHANDLE=y +CONFIG_IRQ_DOMAIN_DEBUG=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_CGROUPS=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_EMBEDDED=y +CONFIG_PERF_EVENTS=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_PARTITION_ADVANCED=y +CONFIG_CMDLINE_PARTITION=y +CONFIG_ARCH_MULTI_V7=y +# CONFIG_ARCH_MULTI_V5 is not set +# CONFIG_ARCH_MULTI_V4 is not set +CONFIG_ARCH_VIRT=y +CONFIG_ARCH_ALPINE=y +CONFIG_ARCH_ARTPEC=y +CONFIG_MACH_ARTPEC6=y +CONFIG_ARCH_MVEBU=y +CONFIG_MACH_ARMADA_370=y +CONFIG_MACH_ARMADA_375=y +CONFIG_MACH_ARMADA_38X=y +CONFIG_MACH_ARMADA_39X=y +CONFIG_MACH_ARMADA_XP=y +CONFIG_MACH_DOVE=y +CONFIG_ARCH_AT91=y +CONFIG_SOC_SAMA5D2=y +CONFIG_SOC_SAMA5D3=y +CONFIG_SOC_SAMA5D4=y +CONFIG_ARCH_BCM=y +CONFIG_ARCH_BCM_CYGNUS=y +CONFIG_ARCH_BCM_NSP=y +CONFIG_ARCH_BCM_21664=y +CONFIG_ARCH_BCM_281XX=y +CONFIG_ARCH_BCM_5301X=y +CONFIG_ARCH_BCM2835=y +CONFIG_ARCH_BCM_63XX=y +CONFIG_ARCH_BRCMSTB=y +CONFIG_ARCH_BERLIN=y +CONFIG_MACH_BERLIN_BG2=y +CONFIG_MACH_BERLIN_BG2CD=y +CONFIG_MACH_BERLIN_BG2Q=y +CONFIG_ARCH_DIGICOLOR=y +CONFIG_ARCH_HIGHBANK=y +CONFIG_ARCH_HISI=y +CONFIG_ARCH_HI3xxx=y +CONFIG_ARCH_HIX5HD2=y +CONFIG_ARCH_HIP01=y +CONFIG_ARCH_HIP04=y +CONFIG_ARCH_KEYSTONE=y +CONFIG_ARCH_MESON=y +CONFIG_ARCH_MXC=y +CONFIG_SOC_IMX50=y +CONFIG_SOC_IMX51=y +CONFIG_SOC_IMX53=y +CONFIG_SOC_IMX6Q=y +CONFIG_SOC_IMX6SL=y +CONFIG_SOC_IMX6SX=y +CONFIG_SOC_IMX6UL=y +CONFIG_SOC_IMX7D=y +CONFIG_SOC_VF610=y +CONFIG_SOC_LS1021A=y +CONFIG_ARCH_OMAP3=y +CONFIG_ARCH_OMAP4=y +CONFIG_SOC_OMAP5=y +CONFIG_SOC_AM33XX=y +CONFIG_SOC_AM43XX=y +CONFIG_SOC_DRA7XX=y +CONFIG_ARCH_QCOM=y +CONFIG_ARCH_MEDIATEK=y +CONFIG_ARCH_MSM8X60=y +CONFIG_ARCH_MSM8960=y +CONFIG_ARCH_MSM8974=y +CONFIG_ARCH_ROCKCHIP=y +CONFIG_ARCH_SOCFPGA=y +CONFIG_PLAT_SPEAR=y +CONFIG_ARCH_SPEAR13XX=y +CONFIG_MACH_SPEAR1310=y +CONFIG_MACH_SPEAR1340=y +CONFIG_ARCH_STI=y +CONFIG_ARCH_EXYNOS=y +CONFIG_EXYNOS5420_MCPM=y +CONFIG_ARCH_RENESAS=y +CONFIG_ARCH_EMEV2=y +CONFIG_ARCH_R7S72100=y +CONFIG_ARCH_R8A73A4=y +CONFIG_ARCH_R8A7740=y +CONFIG_ARCH_R8A7778=y +CONFIG_ARCH_R8A7779=y +CONFIG_ARCH_R8A7790=y +CONFIG_ARCH_R8A7791=y +CONFIG_ARCH_R8A7792=y +CONFIG_ARCH_R8A7793=y +CONFIG_ARCH_R8A7794=y +CONFIG_ARCH_SH73A0=y +CONFIG_ARCH_SUNXI=y +CONFIG_ARCH_SIRF=y +CONFIG_ARCH_TEGRA=y +CONFIG_ARCH_TEGRA_2x_SOC=y +CONFIG_ARCH_TEGRA_3x_SOC=y +CONFIG_ARCH_TEGRA_114_SOC=y +CONFIG_ARCH_TEGRA_124_SOC=y +CONFIG_TEGRA_EMC_SCALING_ENABLE=y +CONFIG_ARCH_UNIPHIER=y +CONFIG_ARCH_U8500=y +CONFIG_MACH_HREFV60=y +CONFIG_MACH_SNOWBALL=y +CONFIG_ARCH_VEXPRESS=y +CONFIG_ARCH_VEXPRESS_CA9X4=y +CONFIG_ARCH_VEXPRESS_TC2_PM=y +CONFIG_ARCH_WM8850=y +CONFIG_ARCH_ZYNQ=y +CONFIG_TRUSTED_FOUNDATIONS=y +CONFIG_PCI=y +CONFIG_PCI_HOST_GENERIC=y +CONFIG_PCI_KEYSTONE=y +CONFIG_PCI_MSI=y +CONFIG_PCI_MVEBU=y +CONFIG_PCI_TEGRA=y +CONFIG_PCI_RCAR_GEN2=y +CONFIG_PCIE_RCAR=y +CONFIG_PCIEPORTBUS=y +CONFIG_SMP=y +CONFIG_NR_CPUS=16 +CONFIG_HIGHPTE=y +CONFIG_CMA=y +CONFIG_SECCOMP=y +CONFIG_ARM_APPENDED_DTB=y +CONFIG_ARM_ATAG_DTB_COMPAT=y +CONFIG_KEXEC=y +CONFIG_EFI=y +CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_STAT_DETAILS=y +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y +CONFIG_CPU_FREQ_GOV_POWERSAVE=m +CONFIG_CPU_FREQ_GOV_USERSPACE=m +CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m +CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y +CONFIG_ARM_IMX6Q_CPUFREQ=y +CONFIG_QORIQ_CPUFREQ=y +CONFIG_CPU_IDLE=y +CONFIG_ARM_CPUIDLE=y +CONFIG_NEON=y +CONFIG_KERNEL_MODE_NEON=y +CONFIG_ARM_ZYNQ_CPUIDLE=y +CONFIG_ARM_EXYNOS_CPUIDLE=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_IP_PNP_RARP=y +CONFIG_IPV6_ROUTER_PREF=y +CONFIG_IPV6_OPTIMISTIC_DAD=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_MIP6=m +CONFIG_IPV6_TUNNEL=m +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_NET_DSA=m +CONFIG_NET_SWITCHDEV=y +CONFIG_CAN=y +CONFIG_CAN_RAW=y +CONFIG_CAN_BCM=y +CONFIG_CAN_DEV=y +CONFIG_CAN_AT91=m +CONFIG_CAN_RCAR=m +CONFIG_CAN_XILINXCAN=y +CONFIG_CAN_MCP251X=y +CONFIG_NET_DSA_BCM_SF2=m +CONFIG_CAN_SUN4I=y +CONFIG_BT=m +CONFIG_BT_MRVL=m +CONFIG_BT_MRVL_SDIO=m +CONFIG_CFG80211=m +CONFIG_MAC80211=m +CONFIG_RFKILL=y +CONFIG_RFKILL_INPUT=y +CONFIG_RFKILL_GPIO=y +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +CONFIG_DMA_CMA=y +CONFIG_CMA_SIZE_MBYTES=64 +CONFIG_OMAP_OCP2SCP=y +CONFIG_SIMPLE_PM_BUS=y +CONFIG_SUNXI_RSB=m +CONFIG_MTD=y +CONFIG_MTD_CMDLINE_PARTS=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_M25P80=y +CONFIG_MTD_NAND=y +CONFIG_MTD_NAND_DENALI_DT=y +CONFIG_MTD_NAND_ATMEL=y +CONFIG_MTD_NAND_BRCMNAND=y +CONFIG_MTD_NAND_VF610_NFC=y +CONFIG_MTD_NAND_DAVINCI=y +CONFIG_MTD_SPI_NOR=y +CONFIG_SPI_FSL_QUADSPI=m +CONFIG_MTD_UBI=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_SIZE=65536 +CONFIG_VIRTIO_BLK=y +CONFIG_AD525X_DPOT=y +CONFIG_AD525X_DPOT_I2C=y +CONFIG_ATMEL_TCLIB=y +CONFIG_ICS932S401=y +CONFIG_ATMEL_SSC=m +CONFIG_QCOM_COINCELL=m +CONFIG_APDS9802ALS=y +CONFIG_ISL29003=y +CONFIG_EEPROM_AT24=y +CONFIG_BLK_DEV_SD=y +CONFIG_BLK_DEV_SR=y +CONFIG_SCSI_MULTI_LUN=y +CONFIG_ATA=y +CONFIG_SATA_AHCI=y +CONFIG_SATA_AHCI_PLATFORM=y +CONFIG_AHCI_BRCM=y +CONFIG_AHCI_ST=y +CONFIG_AHCI_IMX=y +CONFIG_AHCI_SUNXI=y +CONFIG_AHCI_TEGRA=y +CONFIG_SATA_HIGHBANK=y +CONFIG_SATA_MV=y +CONFIG_SATA_RCAR=y +CONFIG_NETDEVICES=y +CONFIG_VIRTIO_NET=y +CONFIG_HIX5HD2_GMAC=y +CONFIG_SUN4I_EMAC=y +CONFIG_MACB=y +CONFIG_BCMGENET=m +CONFIG_SYSTEMPORT=m +CONFIG_NET_CALXEDA_XGMAC=y +CONFIG_GIANFAR=y +CONFIG_IGB=y +CONFIG_MV643XX_ETH=y +CONFIG_MVNETA=y +CONFIG_PXA168_ETH=m +CONFIG_KS8851=y +CONFIG_R8169=y +CONFIG_SH_ETH=y +CONFIG_SMSC911X=y +CONFIG_STMMAC_ETH=y +CONFIG_SYNOPSYS_DWC_ETH_QOS=y +CONFIG_TI_CPSW=y +CONFIG_XILINX_EMACLITE=y +CONFIG_AT803X_PHY=y +CONFIG_MARVELL_PHY=y +CONFIG_SMSC_PHY=y +CONFIG_BROADCOM_PHY=y +CONFIG_ICPLUS_PHY=y +CONFIG_REALTEK_PHY=y +CONFIG_MICREL_PHY=y +CONFIG_FIXED_PHY=y +CONFIG_USB_PEGASUS=y +CONFIG_USB_RTL8152=m +CONFIG_USB_USBNET=y +CONFIG_USB_NET_SMSC75XX=y +CONFIG_USB_NET_SMSC95XX=y +CONFIG_BRCMFMAC=m +CONFIG_RT2X00=m +CONFIG_RT2800USB=m +CONFIG_MWIFIEX=m +CONFIG_MWIFIEX_SDIO=m +CONFIG_INPUT_JOYDEV=y +CONFIG_INPUT_EVDEV=y +CONFIG_KEYBOARD_QT1070=m +CONFIG_KEYBOARD_GPIO=y +CONFIG_KEYBOARD_TEGRA=y +CONFIG_KEYBOARD_SPEAR=y +CONFIG_KEYBOARD_ST_KEYSCAN=y +CONFIG_KEYBOARD_CROS_EC=m +CONFIG_KEYBOARD_SAMSUNG=m +CONFIG_MOUSE_PS2_ELANTECH=y +CONFIG_MOUSE_CYAPA=m +CONFIG_MOUSE_ELAN_I2C=y +CONFIG_INPUT_TOUCHSCREEN=y +CONFIG_TOUCHSCREEN_ATMEL_MXT=m +CONFIG_TOUCHSCREEN_MMS114=m +CONFIG_TOUCHSCREEN_ST1232=m +CONFIG_TOUCHSCREEN_STMPE=y +CONFIG_TOUCHSCREEN_SUN4I=y +CONFIG_TOUCHSCREEN_WM97XX=m +CONFIG_INPUT_MISC=y +CONFIG_INPUT_MAX77693_HAPTIC=m +CONFIG_INPUT_MAX8997_HAPTIC=m +CONFIG_INPUT_MPU3050=y +CONFIG_INPUT_AXP20X_PEK=m +CONFIG_INPUT_ADXL34X=m +CONFIG_SERIO_AMBAKMI=y +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_DW=y +CONFIG_SERIAL_8250_EM=y +CONFIG_SERIAL_8250_MT6577=y +CONFIG_SERIAL_8250_UNIPHIER=y +CONFIG_SERIAL_AMBA_PL011=y +CONFIG_SERIAL_AMBA_PL011_CONSOLE=y +CONFIG_SERIAL_ATMEL=y +CONFIG_SERIAL_ATMEL_CONSOLE=y +CONFIG_SERIAL_ATMEL_TTYAT=y +CONFIG_SERIAL_BCM63XX=y +CONFIG_SERIAL_BCM63XX_CONSOLE=y +CONFIG_SERIAL_MESON=y +CONFIG_SERIAL_MESON_CONSOLE=y +CONFIG_SERIAL_SAMSUNG=y +CONFIG_SERIAL_SAMSUNG_CONSOLE=y +CONFIG_SERIAL_SIRFSOC=y +CONFIG_SERIAL_SIRFSOC_CONSOLE=y +CONFIG_SERIAL_TEGRA=y +CONFIG_SERIAL_IMX=y +CONFIG_SERIAL_IMX_CONSOLE=y +CONFIG_SERIAL_SH_SCI=y +CONFIG_SERIAL_SH_SCI_NR_UARTS=20 +CONFIG_SERIAL_SH_SCI_CONSOLE=y +CONFIG_SERIAL_MSM=y +CONFIG_SERIAL_MSM_CONSOLE=y +CONFIG_SERIAL_VT8500=y +CONFIG_SERIAL_VT8500_CONSOLE=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_SERIAL_OMAP=y +CONFIG_SERIAL_OMAP_CONSOLE=y +CONFIG_SERIAL_XILINX_PS_UART=y +CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y +CONFIG_SERIAL_FSL_LPUART=y +CONFIG_SERIAL_FSL_LPUART_CONSOLE=y +CONFIG_SERIAL_CONEXANT_DIGICOLOR=y +CONFIG_SERIAL_CONEXANT_DIGICOLOR_CONSOLE=y +CONFIG_SERIAL_ST_ASC=y +CONFIG_SERIAL_ST_ASC_CONSOLE=y +CONFIG_HVC_DRIVER=y +CONFIG_VIRTIO_CONSOLE=y +CONFIG_I2C_CHARDEV=y +CONFIG_I2C_DAVINCI=y +CONFIG_I2C_MUX=y +CONFIG_I2C_ARB_GPIO_CHALLENGE=m +CONFIG_I2C_MUX_PCA954x=y +CONFIG_I2C_MUX_PINCTRL=y +CONFIG_I2C_DEMUX_PINCTRL=y +CONFIG_I2C_AT91=m +CONFIG_I2C_BCM2835=y +CONFIG_I2C_CADENCE=y +CONFIG_I2C_DESIGNWARE_PLATFORM=y +CONFIG_I2C_DIGICOLOR=m +CONFIG_I2C_EMEV2=m +CONFIG_I2C_GPIO=m +CONFIG_I2C_EXYNOS5=y +CONFIG_I2C_IMX=m +CONFIG_I2C_MV64XXX=y +CONFIG_I2C_RIIC=y +CONFIG_I2C_RK3X=y +CONFIG_I2C_S3C2410=y +CONFIG_I2C_SH_MOBILE=y +CONFIG_I2C_SIRF=y +CONFIG_I2C_ST=y +CONFIG_I2C_SUN6I_P2WI=y +CONFIG_I2C_TEGRA=y +CONFIG_I2C_UNIPHIER=y +CONFIG_I2C_UNIPHIER_F=y +CONFIG_I2C_XILINX=y +CONFIG_I2C_RCAR=y +CONFIG_I2C_CROS_EC_TUNNEL=m +CONFIG_I2C_SLAVE_EEPROM=y +CONFIG_SPI=y +CONFIG_SPI_ATMEL=m +CONFIG_SPI_BCM2835=y +CONFIG_SPI_BCM2835AUX=y +CONFIG_SPI_CADENCE=y +CONFIG_SPI_DAVINCI=y +CONFIG_SPI_GPIO=m +CONFIG_SPI_FSL_DSPI=m +CONFIG_SPI_OMAP24XX=y +CONFIG_SPI_ORION=y +CONFIG_SPI_PL022=y +CONFIG_SPI_ROCKCHIP=m +CONFIG_SPI_RSPI=y +CONFIG_SPI_S3C64XX=m +CONFIG_SPI_SH_MSIOF=m +CONFIG_SPI_SH_HSPI=y +CONFIG_SPI_SIRF=y +CONFIG_SPI_SUN4I=y +CONFIG_SPI_SUN6I=y +CONFIG_SPI_TEGRA114=y +CONFIG_SPI_TEGRA20_SFLASH=y +CONFIG_SPI_TEGRA20_SLINK=y +CONFIG_SPI_XILINX=y +CONFIG_SPI_SPIDEV=y +CONFIG_SPMI=y +CONFIG_PINCTRL_AS3722=y +CONFIG_PINCTRL_PALMAS=y +CONFIG_PINCTRL_BCM2835=y +CONFIG_PINCTRL_APQ8064=y +CONFIG_PINCTRL_APQ8084=y +CONFIG_PINCTRL_IPQ8064=y +CONFIG_PINCTRL_MSM8660=y +CONFIG_PINCTRL_MSM8960=y +CONFIG_PINCTRL_MSM8X74=y +CONFIG_PINCTRL_MSM8916=y +CONFIG_PINCTRL_QCOM_SPMI_PMIC=y +CONFIG_PINCTRL_QCOM_SSBI_PMIC=y +CONFIG_GPIO_SYSFS=y +CONFIG_GPIO_GENERIC_PLATFORM=y +CONFIG_GPIO_DAVINCI=y +CONFIG_GPIO_DWAPB=y +CONFIG_GPIO_EM=y +CONFIG_GPIO_RCAR=y +CONFIG_GPIO_XILINX=y +CONFIG_GPIO_ZYNQ=y +CONFIG_GPIO_PCA953X=y +CONFIG_GPIO_PCA953X_IRQ=y +CONFIG_GPIO_PCF857X=y +CONFIG_GPIO_TWL4030=y +CONFIG_GPIO_PALMAS=y +CONFIG_GPIO_SYSCON=y +CONFIG_GPIO_TPS6586X=y +CONFIG_GPIO_TPS65910=y +CONFIG_BATTERY_ACT8945A=y +CONFIG_BATTERY_SBS=y +CONFIG_BATTERY_MAX17040=m +CONFIG_BATTERY_MAX17042=m +CONFIG_CHARGER_MAX14577=m +CONFIG_CHARGER_MAX77693=m +CONFIG_CHARGER_MAX8997=m +CONFIG_CHARGER_MAX8998=m +CONFIG_CHARGER_TPS65090=y +CONFIG_AXP20X_POWER=m +CONFIG_POWER_RESET_AS3722=y +CONFIG_POWER_RESET_GPIO=y +CONFIG_POWER_RESET_GPIO_RESTART=y +CONFIG_POWER_RESET_KEYSTONE=y +CONFIG_POWER_RESET_RMOBILE=y +CONFIG_POWER_RESET_ST=y +CONFIG_POWER_AVS=y +CONFIG_ROCKCHIP_IODOMAIN=y +CONFIG_SENSORS_IIO_HWMON=y +CONFIG_SENSORS_LM90=y +CONFIG_SENSORS_LM95245=y +CONFIG_SENSORS_NTC_THERMISTOR=m +CONFIG_SENSORS_PWM_FAN=m +CONFIG_SENSORS_INA2XX=m +CONFIG_CPU_THERMAL=y +CONFIG_ROCKCHIP_THERMAL=y +CONFIG_RCAR_THERMAL=y +CONFIG_ARMADA_THERMAL=y +CONFIG_DAVINCI_WATCHDOG=m +CONFIG_EXYNOS_THERMAL=m +CONFIG_ST_THERMAL_SYSCFG=y +CONFIG_ST_THERMAL_MEMMAP=y +CONFIG_WATCHDOG=y +CONFIG_DA9063_WATCHDOG=m +CONFIG_XILINX_WATCHDOG=y +CONFIG_ARM_SP805_WATCHDOG=y +CONFIG_AT91SAM9X_WATCHDOG=y +CONFIG_SAMA5D4_WATCHDOG=y +CONFIG_ORION_WATCHDOG=y +CONFIG_ST_LPC_WATCHDOG=y +CONFIG_SUNXI_WATCHDOG=y +CONFIG_IMX2_WDT=y +CONFIG_TEGRA_WATCHDOG=m +CONFIG_MESON_WATCHDOG=y +CONFIG_DW_WATCHDOG=y +CONFIG_DIGICOLOR_WATCHDOG=y +CONFIG_BCM2835_WDT=y +CONFIG_BCM7038_WDT=m +CONFIG_BCM_KONA_WDT=y +CONFIG_MFD_ACT8945A=y +CONFIG_MFD_AS3711=y +CONFIG_MFD_AS3722=y +CONFIG_MFD_ATMEL_FLEXCOM=y +CONFIG_MFD_ATMEL_HLCDC=m +CONFIG_MFD_BCM590XX=y +CONFIG_MFD_AXP20X=y +CONFIG_MFD_AXP20X_I2C=m +CONFIG_MFD_AXP20X_RSB=m +CONFIG_MFD_CROS_EC=m +CONFIG_MFD_CROS_EC_I2C=m +CONFIG_MFD_CROS_EC_SPI=m +CONFIG_MFD_DA9063=m +CONFIG_MFD_MAX14577=y +CONFIG_MFD_MAX77686=y +CONFIG_MFD_MAX77693=m +CONFIG_MFD_MAX8907=y +CONFIG_MFD_MAX8997=y +CONFIG_MFD_MAX8998=y +CONFIG_MFD_RK808=y +CONFIG_MFD_PM8921_CORE=y +CONFIG_MFD_QCOM_RPM=y +CONFIG_MFD_SPMI_PMIC=y +CONFIG_MFD_SEC_CORE=y +CONFIG_MFD_STMPE=y +CONFIG_MFD_PALMAS=y +CONFIG_MFD_TPS65090=y +CONFIG_MFD_TPS65217=y +CONFIG_MFD_TPS65218=y +CONFIG_MFD_TPS6586X=y +CONFIG_MFD_TPS65910=y +CONFIG_REGULATOR_ACT8945A=y +CONFIG_REGULATOR_AB8500=y +CONFIG_REGULATOR_ACT8865=y +CONFIG_REGULATOR_ANATOP=y +CONFIG_REGULATOR_AS3711=y +CONFIG_REGULATOR_AS3722=y +CONFIG_REGULATOR_AXP20X=m +CONFIG_REGULATOR_BCM590XX=y +CONFIG_REGULATOR_DA9210=y +CONFIG_REGULATOR_FAN53555=y +CONFIG_REGULATOR_RK808=y +CONFIG_REGULATOR_GPIO=y +CONFIG_MFD_SYSCON=y +CONFIG_POWER_RESET_SYSCON=y +CONFIG_REGULATOR_LP872X=y +CONFIG_REGULATOR_MAX14577=m +CONFIG_REGULATOR_MAX8907=y +CONFIG_REGULATOR_MAX8973=y +CONFIG_REGULATOR_MAX8997=m +CONFIG_REGULATOR_MAX8998=m +CONFIG_REGULATOR_MAX77686=y +CONFIG_REGULATOR_MAX77693=m +CONFIG_REGULATOR_MAX77802=m +CONFIG_REGULATOR_PALMAS=y +CONFIG_REGULATOR_PBIAS=y +CONFIG_REGULATOR_PWM=y +CONFIG_REGULATOR_QCOM_RPM=y +CONFIG_REGULATOR_QCOM_SMD_RPM=y +CONFIG_REGULATOR_S2MPS11=y +CONFIG_REGULATOR_S5M8767=y +CONFIG_REGULATOR_TI_ABB=y +CONFIG_REGULATOR_TPS51632=y +CONFIG_REGULATOR_TPS62360=y +CONFIG_REGULATOR_TPS65090=y +CONFIG_REGULATOR_TPS65217=y +CONFIG_REGULATOR_TPS65218=y +CONFIG_REGULATOR_TPS6586X=y +CONFIG_REGULATOR_TPS65910=y +CONFIG_REGULATOR_TWL4030=y +CONFIG_REGULATOR_VEXPRESS=y +CONFIG_REGULATOR_WM8994=m +CONFIG_MEDIA_SUPPORT=m +CONFIG_MEDIA_CAMERA_SUPPORT=y +CONFIG_MEDIA_CONTROLLER=y +CONFIG_VIDEO_V4L2_SUBDEV_API=y +CONFIG_MEDIA_USB_SUPPORT=y +CONFIG_USB_VIDEO_CLASS=y +CONFIG_USB_GSPCA=y +CONFIG_V4L_PLATFORM_DRIVERS=y +CONFIG_SOC_CAMERA=m +CONFIG_SOC_CAMERA_PLATFORM=m +CONFIG_VIDEO_RCAR_VIN=m +CONFIG_VIDEO_ATMEL_ISI=m +CONFIG_VIDEO_SAMSUNG_EXYNOS4_IS=m +CONFIG_VIDEO_S5P_FIMC=m +CONFIG_VIDEO_S5P_MIPI_CSIS=m +CONFIG_VIDEO_EXYNOS_FIMC_LITE=m +CONFIG_VIDEO_EXYNOS4_FIMC_IS=m +CONFIG_V4L_MEM2MEM_DRIVERS=y +CONFIG_VIDEO_SAMSUNG_S5P_JPEG=m +CONFIG_VIDEO_SAMSUNG_S5P_MFC=m +CONFIG_VIDEO_STI_BDISP=m +CONFIG_VIDEO_RENESAS_JPU=m +CONFIG_VIDEO_RENESAS_VSP1=m +CONFIG_V4L_TEST_DRIVERS=y +# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set +CONFIG_VIDEO_ADV7180=m +CONFIG_VIDEO_ML86V7667=m +CONFIG_DRM=y +CONFIG_DRM_I2C_ADV7511=m +# CONFIG_DRM_I2C_CH7006 is not set +# CONFIG_DRM_I2C_SIL164 is not set +CONFIG_DRM_NXP_PTN3460=m +CONFIG_DRM_PARADE_PS8622=m +CONFIG_DRM_NOUVEAU=m +CONFIG_DRM_EXYNOS=m +CONFIG_DRM_EXYNOS_FIMD=y +CONFIG_DRM_EXYNOS_MIXER=y +CONFIG_DRM_EXYNOS_DPI=y +CONFIG_DRM_EXYNOS_DSI=y +CONFIG_DRM_EXYNOS_HDMI=y +CONFIG_DRM_ROCKCHIP=m +CONFIG_ROCKCHIP_ANALOGIX_DP=m +CONFIG_ROCKCHIP_DW_HDMI=m +CONFIG_ROCKCHIP_DW_MIPI_DSI=m +CONFIG_ROCKCHIP_INNO_HDMI=m +CONFIG_DRM_ATMEL_HLCDC=m +CONFIG_DRM_RCAR_DU=m +CONFIG_DRM_RCAR_HDMI=y +CONFIG_DRM_RCAR_LVDS=y +CONFIG_DRM_SUN4I=m +CONFIG_DRM_TEGRA=y +CONFIG_DRM_PANEL_SAMSUNG_LD9040=m +CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0=m +CONFIG_DRM_PANEL_SIMPLE=y +CONFIG_DRM_STI=m +CONFIG_DRM_VC4=y +CONFIG_FB_ARMCLCD=y +CONFIG_FB_EFI=y +CONFIG_FB_WM8505=y +CONFIG_FB_SH_MOBILE_LCDC=y +CONFIG_FB_SIMPLE=y +CONFIG_FB_SH_MOBILE_MERAM=y +CONFIG_BACKLIGHT_LCD_SUPPORT=y +CONFIG_BACKLIGHT_CLASS_DEVICE=y +CONFIG_LCD_PLATFORM=m +CONFIG_BACKLIGHT_PWM=y +CONFIG_BACKLIGHT_AS3711=y +CONFIG_FRAMEBUFFER_CONSOLE=y +CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y +CONFIG_SOUND=m +CONFIG_SND=m +CONFIG_SND_DYNAMIC_MINORS=y +CONFIG_SND_HDA_TEGRA=m +CONFIG_SND_HDA_INPUT_BEEP=y +CONFIG_SND_HDA_PATCH_LOADER=y +CONFIG_SND_HDA_CODEC_REALTEK=m +CONFIG_SND_HDA_CODEC_HDMI=m +CONFIG_SND_USB_AUDIO=m +CONFIG_SND_SOC=m +CONFIG_SND_ATMEL_SOC=m +CONFIG_SND_ATMEL_SOC_WM8904=m +CONFIG_SND_ATMEL_SOC_PDMIC=m +CONFIG_SND_BCM2835_SOC_I2S=m +CONFIG_SND_SOC_FSL_SAI=m +CONFIG_SND_SOC_ROCKCHIP=m +CONFIG_SND_SOC_ROCKCHIP_SPDIF=m +CONFIG_SND_SOC_ROCKCHIP_MAX98090=m +CONFIG_SND_SOC_ROCKCHIP_RT5645=m +CONFIG_SND_SOC_SAMSUNG=m +CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994=m +CONFIG_SND_SOC_SMDK_WM8994_PCM=m +CONFIG_SND_SOC_SNOW=m +CONFIG_SND_SOC_SH4_FSI=m +CONFIG_SND_SOC_RCAR=m +CONFIG_SND_SOC_RSRC_CARD=m +CONFIG_SND_SUN4I_CODEC=m +CONFIG_SND_SOC_TEGRA=m +CONFIG_SND_SOC_TEGRA_RT5640=m +CONFIG_SND_SOC_TEGRA_WM8753=m +CONFIG_SND_SOC_TEGRA_WM8903=m +CONFIG_SND_SOC_TEGRA_WM9712=m +CONFIG_SND_SOC_TEGRA_TRIMSLICE=m +CONFIG_SND_SOC_TEGRA_ALC5632=m +CONFIG_SND_SOC_TEGRA_MAX98090=m +CONFIG_SND_SOC_AK4642=m +CONFIG_SND_SOC_SGTL5000=m +CONFIG_SND_SOC_SPDIF=m +CONFIG_SND_SOC_WM8978=m +CONFIG_USB=y +CONFIG_USB_XHCI_HCD=y +CONFIG_USB_XHCI_MVEBU=y +CONFIG_USB_XHCI_RCAR=m +CONFIG_USB_XHCI_TEGRA=m +CONFIG_USB_EHCI_HCD=y +CONFIG_USB_EHCI_MSM=m +CONFIG_USB_EHCI_EXYNOS=y +CONFIG_USB_EHCI_TEGRA=y +CONFIG_USB_EHCI_HCD_STI=y +CONFIG_USB_EHCI_HCD_PLATFORM=y +CONFIG_USB_ISP1760=y +CONFIG_USB_OHCI_HCD=y +CONFIG_USB_OHCI_HCD_STI=y +CONFIG_USB_OHCI_HCD_PLATFORM=y +CONFIG_USB_OHCI_EXYNOS=m +CONFIG_USB_R8A66597_HCD=m +CONFIG_USB_RENESAS_USBHS=m +CONFIG_USB_STORAGE=y +CONFIG_USB_MUSB_HDRC=m +CONFIG_USB_MUSB_SUNXI=m +CONFIG_USB_DWC3=y +CONFIG_USB_DWC2=y +CONFIG_USB_CHIPIDEA=y +CONFIG_USB_CHIPIDEA_UDC=y +CONFIG_USB_CHIPIDEA_HOST=y +CONFIG_AB8500_USB=y +CONFIG_KEYSTONE_USB_PHY=y +CONFIG_OMAP_USB3=y +CONFIG_USB_GPIO_VBUS=y +CONFIG_USB_ISP1301=y +CONFIG_USB_MSM_OTG=m +CONFIG_USB_MXS_PHY=y +CONFIG_USB_GADGET=y +CONFIG_USB_FSL_USB2=y +CONFIG_USB_RENESAS_USBHS_UDC=m +CONFIG_USB_ETH=m +CONFIG_MMC=y +CONFIG_MMC_BLOCK_MINORS=16 +CONFIG_MMC_ARMMMCI=y +CONFIG_MMC_SDHCI=y +CONFIG_MMC_SDHCI_PLTFM=y +CONFIG_MMC_SDHCI_OF_ARASAN=y +CONFIG_MMC_SDHCI_OF_AT91=y +CONFIG_MMC_SDHCI_OF_ESDHC=m +CONFIG_MMC_SDHCI_ESDHC_IMX=y +CONFIG_MMC_SDHCI_DOVE=y +CONFIG_MMC_SDHCI_TEGRA=y +CONFIG_MMC_SDHCI_PXAV3=y +CONFIG_MMC_SDHCI_SPEAR=y +CONFIG_MMC_SDHCI_S3C=y +CONFIG_MMC_SDHCI_S3C_DMA=y +CONFIG_MMC_SDHCI_BCM_KONA=y +CONFIG_MMC_SDHCI_ST=y +CONFIG_MMC_OMAP=y +CONFIG_MMC_OMAP_HS=y +CONFIG_MMC_ATMELMCI=y +CONFIG_MMC_SDHCI_MSM=y +CONFIG_MMC_MVSDIO=y +CONFIG_MMC_SDHI=y +CONFIG_MMC_DW=y +CONFIG_MMC_DW_IDMAC=y +CONFIG_MMC_DW_PLTFM=y +CONFIG_MMC_DW_EXYNOS=y +CONFIG_MMC_DW_ROCKCHIP=y +CONFIG_MMC_SH_MMCIF=y +CONFIG_MMC_SUNXI=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_CLASS_FLASH=m +CONFIG_LEDS_GPIO=y +CONFIG_LEDS_PWM=y +CONFIG_LEDS_MAX77693=m +CONFIG_LEDS_MAX8997=m +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_ONESHOT=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_BACKLIGHT=y +CONFIG_LEDS_TRIGGER_CPU=y +CONFIG_LEDS_TRIGGER_GPIO=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_LEDS_TRIGGER_TRANSIENT=y +CONFIG_LEDS_TRIGGER_CAMERA=y +CONFIG_EDAC=y +CONFIG_EDAC_MM_EDAC=y +CONFIG_EDAC_HIGHBANK_MC=y +CONFIG_EDAC_HIGHBANK_L2=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_AS3722=y +CONFIG_RTC_DRV_DS1307=y +CONFIG_RTC_DRV_HYM8563=m +CONFIG_RTC_DRV_MAX8907=y +CONFIG_RTC_DRV_MAX8998=m +CONFIG_RTC_DRV_MAX8997=m +CONFIG_RTC_DRV_MAX77686=y +CONFIG_RTC_DRV_RK808=m +CONFIG_RTC_DRV_RS5C372=m +CONFIG_RTC_DRV_PALMAS=y +CONFIG_RTC_DRV_ST_LPC=y +CONFIG_RTC_DRV_TWL4030=y +CONFIG_RTC_DRV_TPS6586X=y +CONFIG_RTC_DRV_TPS65910=y +CONFIG_RTC_DRV_S35390A=m +CONFIG_RTC_DRV_RX8581=m +CONFIG_RTC_DRV_EM3027=y +CONFIG_RTC_DRV_DA9063=m +CONFIG_RTC_DRV_EFI=m +CONFIG_RTC_DRV_DIGICOLOR=m +CONFIG_RTC_DRV_S5M=m +CONFIG_RTC_DRV_S3C=m +CONFIG_RTC_DRV_PL031=y +CONFIG_RTC_DRV_AT91RM9200=m +CONFIG_RTC_DRV_AT91SAM9=m +CONFIG_RTC_DRV_VT8500=y +CONFIG_RTC_DRV_SUN6I=y +CONFIG_RTC_DRV_SUNXI=y +CONFIG_RTC_DRV_MV=y +CONFIG_RTC_DRV_TEGRA=y +CONFIG_DMADEVICES=y +CONFIG_DW_DMAC=y +CONFIG_AT_HDMAC=y +CONFIG_AT_XDMAC=y +CONFIG_FSL_EDMA=y +CONFIG_MV_XOR=y +CONFIG_TEGRA20_APB_DMA=y +CONFIG_SH_DMAE=y +CONFIG_RCAR_DMAC=y +CONFIG_RENESAS_USB_DMAC=m +CONFIG_STE_DMA40=y +CONFIG_SIRF_DMA=y +CONFIG_TI_EDMA=y +CONFIG_PL330_DMA=y +CONFIG_IMX_SDMA=y +CONFIG_IMX_DMA=y +CONFIG_MXS_DMA=y +CONFIG_DMA_BCM2835=y +CONFIG_DMA_OMAP=y +CONFIG_QCOM_BAM_DMA=y +CONFIG_XILINX_DMA=y +CONFIG_DMA_SUN6I=y +CONFIG_STAGING=y +CONFIG_SENSORS_ISL29018=y +CONFIG_SENSORS_ISL29028=y +CONFIG_MFD_NVEC=y +CONFIG_KEYBOARD_NVEC=y +CONFIG_SERIO_NVEC_PS2=y +CONFIG_NVEC_POWER=y +CONFIG_NVEC_PAZ00=y +CONFIG_QCOM_GSBI=y +CONFIG_QCOM_PM=y +CONFIG_QCOM_SMEM=y +CONFIG_QCOM_SMD=y +CONFIG_QCOM_SMD_RPM=y +CONFIG_QCOM_SMP2P=y +CONFIG_QCOM_SMSM=y +CONFIG_QCOM_WCNSS_CTRL=m +CONFIG_ROCKCHIP_PM_DOMAINS=y +CONFIG_COMMON_CLK_QCOM=y +CONFIG_CHROME_PLATFORMS=y +CONFIG_STAGING_BOARD=y +CONFIG_CROS_EC_CHARDEV=m +CONFIG_COMMON_CLK_MAX77686=y +CONFIG_COMMON_CLK_MAX77802=m +CONFIG_COMMON_CLK_RK808=m +CONFIG_COMMON_CLK_S2MPS11=m +CONFIG_APQ_MMCC_8084=y +CONFIG_MSM_GCC_8660=y +CONFIG_MSM_MMCC_8960=y +CONFIG_MSM_MMCC_8974=y +CONFIG_HWSPINLOCK_QCOM=y +CONFIG_ROCKCHIP_IOMMU=y +CONFIG_TEGRA_IOMMU_GART=y +CONFIG_TEGRA_IOMMU_SMMU=y +CONFIG_PM_DEVFREQ=y +CONFIG_ARM_TEGRA_DEVFREQ=m +CONFIG_MEMORY=y +CONFIG_EXTCON=y +CONFIG_TI_AEMIF=y +CONFIG_IIO=y +CONFIG_AT91_ADC=m +CONFIG_AT91_SAMA5D2_ADC=m +CONFIG_BERLIN2_ADC=m +CONFIG_EXYNOS_ADC=m +CONFIG_VF610_ADC=m +CONFIG_XILINX_XADC=y +CONFIG_CM36651=m +CONFIG_AK8975=y +CONFIG_RASPBERRYPI_POWER=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m +CONFIG_PWM_ATMEL_HLCDC_PWM=m +CONFIG_PWM_ATMEL_TCB=m +CONFIG_PWM_FSL_FTM=m +CONFIG_PWM_RENESAS_TPU=y +CONFIG_PWM_ROCKCHIP=m +CONFIG_PWM_SAMSUNG=m +CONFIG_PWM_SUN4I=y +CONFIG_PWM_TEGRA=y +CONFIG_PWM_VT8500=y +CONFIG_PHY_HIX5HD2_SATA=y +CONFIG_E1000E=y +CONFIG_PWM_STI=y +CONFIG_PWM_BCM2835=y +CONFIG_PWM_BRCMSTB=m +CONFIG_OMAP_USB2=y +CONFIG_TI_PIPE3=y +CONFIG_PHY_BERLIN_USB=y +CONFIG_PHY_BERLIN_SATA=y +CONFIG_PHY_ROCKCHIP_DP=m +CONFIG_PHY_ROCKCHIP_USB=m +CONFIG_PHY_QCOM_APQ8064_SATA=m +CONFIG_PHY_MIPHY28LP=y +CONFIG_PHY_MIPHY365X=y +CONFIG_PHY_RCAR_GEN2=m +CONFIG_PHY_STIH41X_USB=y +CONFIG_PHY_STIH407_USB=y +CONFIG_PHY_SUN4I_USB=y +CONFIG_PHY_SUN9I_USB=y +CONFIG_PHY_SAMSUNG_USB2=m +CONFIG_PHY_TEGRA_XUSB=y +CONFIG_PHY_BRCM_SATA=y +CONFIG_NVMEM=y +CONFIG_NVMEM_SUNXI_SID=y +CONFIG_BCM2835_MBOX=y +CONFIG_RASPBERRYPI_FIRMWARE=y +CONFIG_EFI_VARS=m +CONFIG_EFI_CAPSULE_LOADER=m +CONFIG_EXT4_FS=y +CONFIG_AUTOFS4_FS=y +CONFIG_MSDOS_FS=y +CONFIG_VFAT_FS=y +CONFIG_NTFS_FS=y +CONFIG_TMPFS_POSIX_ACL=y +CONFIG_UBIFS_FS=y +CONFIG_TMPFS=y +CONFIG_SQUASHFS=y +CONFIG_SQUASHFS_LZO=y +CONFIG_SQUASHFS_XZ=y +CONFIG_NFS_FS=y +CONFIG_NFS_V3_ACL=y +CONFIG_NFS_V4=y +CONFIG_ROOT_NFS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_NLS_UTF8=y +CONFIG_PRINTK_TIME=y +CONFIG_DEBUG_FS=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_LOCKUP_DETECTOR=y +CONFIG_CRYPTO_DEV_TEGRA_AES=y +CONFIG_CPUFREQ_DT=y +CONFIG_KEYSTONE_IRQ=y +CONFIG_HW_RANDOM=y +CONFIG_HW_RANDOM_ST=y +CONFIG_CRYPTO_DEV_MARVELL_CESA=m +CONFIG_CRYPTO_DEV_S5P=m +CONFIG_CRYPTO_DEV_SUN4I_SS=m +CONFIG_CRYPTO_DEV_ROCKCHIP=m +CONFIG_ARM_CRYPTO=y +CONFIG_CRYPTO_SHA1_ARM=m +CONFIG_CRYPTO_SHA1_ARM_NEON=m +CONFIG_CRYPTO_SHA1_ARM_CE=m +CONFIG_CRYPTO_SHA2_ARM_CE=m +CONFIG_CRYPTO_SHA256_ARM=m +CONFIG_CRYPTO_SHA512_ARM=m +CONFIG_CRYPTO_AES_ARM=m +CONFIG_CRYPTO_AES_ARM_BS=m +CONFIG_CRYPTO_AES_ARM_CE=m +CONFIG_CRYPTO_GHASH_ARM_CE=m +CONFIG_CRYPTO_DEV_ATMEL_AES=m +CONFIG_CRYPTO_DEV_ATMEL_TDES=m +CONFIG_CRYPTO_DEV_ATMEL_SHA=m +CONFIG_VIDEO_VIVID=m +CONFIG_VIRTIO=y +CONFIG_VIRTIO_PCI=y +CONFIG_VIRTIO_PCI_LEGACY=y +CONFIG_VIRTIO_MMIO=y +CONFIG_TEE=y +CONFIG_OPTEE=y + diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index d0df3611d1e2..a2e7f22494ab 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -109,6 +109,7 @@ config ARM64 select POWER_SUPPLY select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE + select THREAD_INFO_IN_TASK help ARM 64-bit (AArch64) Linux support. @@ -712,6 +713,17 @@ config KEXEC but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. +config CRASH_DUMP + bool "Build kdump crash kernel" + help + Generate crash dump after being started by kexec. This should + be normally only set in special crash dump kernels which are + loaded in the main kernel with kexec-tools into a specially + reserved region and then later executed after a crash by + kdump/kexec. + + For more details see Documentation/kdump/kdump.txt + config XEN_DOM0 def_bool y depends on XEN @@ -843,6 +855,14 @@ config SETEND_EMULATION If unsure, say Y endif +config ARM64_SW_TTBR0_PAN + bool "Emulate Privileged Access Never using TTBR0_EL1 switching" + help + Enabling this option prevents the kernel from accessing + user-space memory directly by pointing TTBR0_EL1 to a reserved + zeroed area and reserved ASID. The user access routines + restore the valid TTBR0_EL1 temporarily. + menu "ARMv8.1 architectural features" config ARM64_HW_AFDBM diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index dab2cb0c1f1c..24922c9c73b8 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -79,6 +79,7 @@ CONFIG_CMA=y CONFIG_SECCOMP=y CONFIG_XEN=y CONFIG_KEXEC=y +CONFIG_CRASH_DUMP=y # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set CONFIG_COMPAT=y CONFIG_CPU_IDLE=y diff --git a/arch/arm64/configs/lsk_defconfig b/arch/arm64/configs/lsk_defconfig new file mode 100644 index 000000000000..28089d2d651b --- /dev/null +++ b/arch/arm64/configs/lsk_defconfig @@ -0,0 +1,468 @@ +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_AUDIT=y +CONFIG_NO_HZ_IDLE=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_BSD_PROCESS_ACCT_V3=y +CONFIG_TASKSTATS=y +CONFIG_TASK_DELAY_ACCT=y +CONFIG_TASK_XACCT=y +CONFIG_TASK_IO_ACCOUNTING=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=14 +CONFIG_MEMCG=y +CONFIG_MEMCG_SWAP=y +CONFIG_BLK_CGROUP=y +CONFIG_CGROUP_PIDS=y +CONFIG_CGROUP_HUGETLB=y +CONFIG_CPUSETS=y +CONFIG_CGROUP_DEVICE=y +CONFIG_CGROUP_CPUACCT=y +CONFIG_CGROUP_PERF=y +CONFIG_USER_NS=y +CONFIG_SCHED_AUTOGROUP=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_KALLSYMS_ALL=y +# CONFIG_COMPAT_BRK is not set +CONFIG_PROFILING=y +CONFIG_JUMP_LABEL=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +CONFIG_ARCH_SUNXI=y +CONFIG_ARCH_ALPINE=y +CONFIG_ARCH_BCM_IPROC=y +CONFIG_ARCH_BERLIN=y +CONFIG_ARCH_EXYNOS=y +CONFIG_ARCH_LAYERSCAPE=y +CONFIG_ARCH_LG1K=y +CONFIG_ARCH_HISI=y +CONFIG_ARCH_MEDIATEK=y +CONFIG_ARCH_MESON=y +CONFIG_ARCH_MVEBU=y +CONFIG_ARCH_QCOM=y +CONFIG_ARCH_ROCKCHIP=y +CONFIG_ARCH_SEATTLE=y +CONFIG_ARCH_RENESAS=y +CONFIG_ARCH_R8A7795=y +CONFIG_ARCH_R8A7796=y +CONFIG_ARCH_STRATIX10=y +CONFIG_ARCH_TEGRA=y +CONFIG_ARCH_SPRD=y +CONFIG_ARCH_THUNDER=y +CONFIG_ARCH_UNIPHIER=y +CONFIG_ARCH_VEXPRESS=y +CONFIG_ARCH_VULCAN=y +CONFIG_ARCH_XGENE=y +CONFIG_ARCH_ZX=y +CONFIG_ARCH_ZYNQMP=y +CONFIG_PCI=y +CONFIG_PCI_MSI=y +CONFIG_PCI_IOV=y +CONFIG_PCI_AARDVARK=y +CONFIG_PCIE_RCAR=y +CONFIG_PCI_HOST_GENERIC=y +CONFIG_PCI_XGENE=y +CONFIG_PCI_LAYERSCAPE=y +CONFIG_PCI_HISI=y +CONFIG_PCIE_QCOM=y +CONFIG_PCIE_ARMADA_8K=y +CONFIG_ARM64_VA_BITS_48=y +CONFIG_SCHED_MC=y +CONFIG_PREEMPT=y +CONFIG_KSM=y +CONFIG_TRANSPARENT_HUGEPAGE=y +CONFIG_CMA=y +CONFIG_SECCOMP=y +CONFIG_XEN=y +CONFIG_KEXEC=y +CONFIG_CRASH_DUMP=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_COMPAT=y +CONFIG_CPU_IDLE=y +CONFIG_ARM_CPUIDLE=y +CONFIG_CPU_FREQ=y +CONFIG_CPUFREQ_DT=y +CONFIG_ARM_BIG_LITTLE_CPUFREQ=y +CONFIG_ARM_SCPI_CPUFREQ=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_IPV6=m +CONFIG_NETFILTER=y +CONFIG_NF_CONNTRACK=m +CONFIG_NF_CONNTRACK_EVENTS=y +CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m +CONFIG_NETFILTER_XT_TARGET_LOG=m +CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m +CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m +CONFIG_NF_CONNTRACK_IPV4=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_TARGET_REJECT=m +CONFIG_IP_NF_NAT=m +CONFIG_IP_NF_TARGET_MASQUERADE=m +CONFIG_IP_NF_MANGLE=m +CONFIG_NF_CONNTRACK_IPV6=m +CONFIG_IP6_NF_IPTABLES=m +CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_TARGET_REJECT=m +CONFIG_IP6_NF_MANGLE=m +CONFIG_IP6_NF_NAT=m +CONFIG_IP6_NF_TARGET_MASQUERADE=m +CONFIG_BRIDGE=m +CONFIG_BRIDGE_VLAN_FILTERING=y +CONFIG_VLAN_8021Q=m +CONFIG_VLAN_8021Q_GVRP=y +CONFIG_VLAN_8021Q_MVRP=y +CONFIG_BPF_JIT=y +CONFIG_BT=m +CONFIG_BT_HIDP=m +# CONFIG_BT_HS is not set +# CONFIG_BT_LE is not set +CONFIG_BT_LEDS=y +# CONFIG_BT_DEBUGFS is not set +CONFIG_BT_HCIUART=m +CONFIG_BT_HCIUART_LL=y +CONFIG_CFG80211=m +CONFIG_MAC80211=m +CONFIG_MAC80211_LEDS=y +CONFIG_RFKILL=m +CONFIG_NET_9P=y +CONFIG_NET_9P_VIRTIO=y +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +CONFIG_DMA_CMA=y +CONFIG_MTD=y +CONFIG_MTD_M25P80=y +CONFIG_MTD_SPI_NOR=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_NBD=m +CONFIG_VIRTIO_BLK=y +CONFIG_SRAM=y +# CONFIG_SCSI_PROC_FS is not set +CONFIG_BLK_DEV_SD=y +CONFIG_SCSI_SAS_ATA=y +CONFIG_SCSI_HISI_SAS=y +CONFIG_ATA=y +CONFIG_SATA_AHCI=y +CONFIG_SATA_AHCI_PLATFORM=y +CONFIG_AHCI_CEVA=y +CONFIG_AHCI_MVEBU=y +CONFIG_AHCI_XGENE=y +CONFIG_AHCI_QORIQ=y +CONFIG_SATA_RCAR=y +CONFIG_SATA_SIL24=y +CONFIG_PATA_PLATFORM=y +CONFIG_PATA_OF_PLATFORM=y +CONFIG_NETDEVICES=y +CONFIG_MACVLAN=m +CONFIG_MACVTAP=m +CONFIG_TUN=y +CONFIG_VETH=m +CONFIG_VIRTIO_NET=y +CONFIG_AMD_XGBE=y +CONFIG_NET_XGENE=y +CONFIG_MACB=y +CONFIG_HNS_DSAF=y +CONFIG_HNS_ENET=y +CONFIG_E1000E=y +CONFIG_IGB=y +CONFIG_IGBVF=y +CONFIG_SKY2=y +CONFIG_RAVB=y +CONFIG_SMC91X=y +CONFIG_SMSC911X=y +CONFIG_STMMAC_ETH=m +CONFIG_REALTEK_PHY=m +CONFIG_MICREL_PHY=y +CONFIG_USB_PEGASUS=m +CONFIG_USB_RTL8150=m +CONFIG_USB_RTL8152=m +CONFIG_USB_USBNET=m +CONFIG_USB_NET_DM9601=m +CONFIG_USB_NET_SR9800=m +CONFIG_USB_NET_SMSC75XX=m +CONFIG_USB_NET_SMSC95XX=m +CONFIG_USB_NET_PLUSB=m +CONFIG_USB_NET_MCS7830=m +CONFIG_WL18XX=m +CONFIG_WLCORE_SDIO=m +CONFIG_INPUT_EVDEV=y +CONFIG_KEYBOARD_GPIO=y +CONFIG_INPUT_MISC=y +CONFIG_INPUT_PM8941_PWRKEY=y +CONFIG_INPUT_HISI_POWERKEY=y +# CONFIG_SERIO_SERPORT is not set +CONFIG_SERIO_AMBAKMI=y +CONFIG_LEGACY_PTY_COUNT=16 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_DW=y +CONFIG_SERIAL_8250_MT6577=y +CONFIG_SERIAL_8250_UNIPHIER=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_SERIAL_AMBA_PL011=y +CONFIG_SERIAL_AMBA_PL011_CONSOLE=y +CONFIG_SERIAL_SAMSUNG=y +CONFIG_SERIAL_SAMSUNG_CONSOLE=y +CONFIG_SERIAL_TEGRA=y +CONFIG_SERIAL_SH_SCI=y +CONFIG_SERIAL_SH_SCI_NR_UARTS=11 +CONFIG_SERIAL_SH_SCI_CONSOLE=y +CONFIG_SERIAL_MESON=y +CONFIG_SERIAL_MESON_CONSOLE=y +CONFIG_SERIAL_MSM=y +CONFIG_SERIAL_MSM_CONSOLE=y +CONFIG_SERIAL_XILINX_PS_UART=y +CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y +CONFIG_SERIAL_MVEBU_UART=y +CONFIG_VIRTIO_CONSOLE=y +CONFIG_I2C_CHARDEV=y +CONFIG_I2C_MUX=y +CONFIG_I2C_MUX_PCA954x=y +CONFIG_I2C_DESIGNWARE_PLATFORM=y +CONFIG_I2C_IMX=y +CONFIG_I2C_MESON=y +CONFIG_I2C_MV64XXX=y +CONFIG_I2C_QUP=y +CONFIG_I2C_TEGRA=y +CONFIG_I2C_UNIPHIER_F=y +CONFIG_I2C_RCAR=y +CONFIG_I2C_CROS_EC_TUNNEL=y +CONFIG_SPI=y +CONFIG_SPI_MESON_SPIFC=m +CONFIG_SPI_ORION=y +CONFIG_SPI_PL022=y +CONFIG_SPI_QUP=y +CONFIG_SPI_SPIDEV=m +CONFIG_SPI_S3C64XX=y +CONFIG_SPMI=y +CONFIG_PINCTRL_SINGLE=y +CONFIG_PINCTRL_MAX77620=y +CONFIG_PINCTRL_MSM8916=y +CONFIG_PINCTRL_MSM8996=y +CONFIG_PINCTRL_QDF2XXX=y +CONFIG_PINCTRL_QCOM_SPMI_PMIC=y +CONFIG_GPIO_SYSFS=y +CONFIG_GPIO_DWAPB=y +CONFIG_GPIO_PL061=y +CONFIG_GPIO_RCAR=y +CONFIG_GPIO_XGENE=y +CONFIG_GPIO_PCA953X=y +CONFIG_GPIO_PCA953X_IRQ=y +CONFIG_GPIO_MAX77620=y +CONFIG_POWER_RESET_MSM=y +CONFIG_BATTERY_BQ27XXX=y +CONFIG_POWER_RESET_XGENE=y +CONFIG_POWER_RESET_SYSCON=y +CONFIG_SENSORS_LM90=m +CONFIG_SENSORS_INA2XX=m +CONFIG_SENSORS_ARM_SCPI=y +CONFIG_THERMAL=y +CONFIG_THERMAL_EMULATION=y +CONFIG_THERMAL_GOV_POWER_ALLOCATOR=y +CONFIG_CPU_THERMAL=y +CONFIG_EXYNOS_THERMAL=y +CONFIG_WATCHDOG=y +CONFIG_RENESAS_WDT=y +CONFIG_S3C2410_WATCHDOG=y +CONFIG_MESON_GXBB_WATCHDOG=m +CONFIG_MESON_WATCHDOG=m +CONFIG_MFD_MAX77620=y +CONFIG_MFD_SPMI_PMIC=y +CONFIG_MFD_SEC_CORE=y +CONFIG_MFD_HI655X_PMIC=y +CONFIG_REGULATOR=y +CONFIG_MFD_CROS_EC=y +CONFIG_MFD_CROS_EC_I2C=y +CONFIG_REGULATOR_FIXED_VOLTAGE=y +CONFIG_REGULATOR_GPIO=y +CONFIG_REGULATOR_HI655X=y +CONFIG_REGULATOR_MAX77620=y +CONFIG_REGULATOR_PWM=y +CONFIG_REGULATOR_QCOM_SMD_RPM=y +CONFIG_REGULATOR_QCOM_SPMI=y +CONFIG_REGULATOR_S2MPS11=y +CONFIG_DRM=m +CONFIG_DRM_NOUVEAU=m +CONFIG_DRM_TEGRA=m +CONFIG_DRM_PANEL_SIMPLE=m +CONFIG_DRM_I2C_ADV7511=m +CONFIG_DRM_HISI_KIRIN=m +CONFIG_FB=y +CONFIG_FB_ARMCLCD=y +CONFIG_BACKLIGHT_GENERIC=m +CONFIG_BACKLIGHT_LP855X=m +CONFIG_FRAMEBUFFER_CONSOLE=y +CONFIG_LOGO=y +# CONFIG_LOGO_LINUX_MONO is not set +# CONFIG_LOGO_LINUX_VGA16 is not set +CONFIG_SOUND=y +CONFIG_SND=y +CONFIG_SND_SOC=y +CONFIG_SND_SOC_RCAR=y +CONFIG_SND_SOC_SAMSUNG=y +CONFIG_SND_SOC_AK4613=y +CONFIG_USB=y +CONFIG_USB_OTG=y +CONFIG_USB_XHCI_HCD=y +CONFIG_USB_XHCI_PLATFORM=y +CONFIG_USB_XHCI_RCAR=y +CONFIG_USB_EHCI_EXYNOS=y +CONFIG_USB_XHCI_TEGRA=y +CONFIG_USB_EHCI_HCD=y +CONFIG_USB_EHCI_MSM=y +CONFIG_USB_EHCI_HCD_PLATFORM=y +CONFIG_USB_OHCI_EXYNOS=y +CONFIG_USB_OHCI_HCD=y +CONFIG_USB_OHCI_HCD_PLATFORM=y +CONFIG_USB_RENESAS_USBHS=m +CONFIG_USB_STORAGE=y +CONFIG_USB_DWC2=y +CONFIG_USB_DWC3=y +CONFIG_USB_CHIPIDEA=y +CONFIG_USB_CHIPIDEA_UDC=y +CONFIG_USB_CHIPIDEA_HOST=y +CONFIG_USB_ISP1760=y +CONFIG_USB_HSIC_USB3503=y +CONFIG_USB_MSM_OTG=y +CONFIG_USB_ULPI=y +CONFIG_USB_GADGET=y +CONFIG_USB_RENESAS_USBHS_UDC=m +CONFIG_MMC=y +CONFIG_MMC_BLOCK_MINORS=32 +CONFIG_MMC_ARMMMCI=y +CONFIG_MMC_SDHCI=y +CONFIG_MMC_SDHCI_ACPI=y +CONFIG_MMC_SDHCI_PLTFM=y +CONFIG_MMC_SDHCI_OF_ESDHC=y +CONFIG_MMC_SDHCI_TEGRA=y +CONFIG_MMC_SDHCI_MSM=y +CONFIG_MMC_SPI=y +CONFIG_MMC_SDHI=y +CONFIG_MMC_DW=y +CONFIG_MMC_DW_EXYNOS=y +CONFIG_MMC_DW_K3=y +CONFIG_MMC_SUNXI=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_GPIO=y +CONFIG_LEDS_SYSCON=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_CPU=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_MAX77686=y +CONFIG_RTC_DRV_S5M=y +CONFIG_RTC_DRV_DS3232=y +CONFIG_RTC_DRV_EFI=y +CONFIG_RTC_DRV_PL031=y +CONFIG_RTC_DRV_SUN6I=y +CONFIG_RTC_DRV_TEGRA=y +CONFIG_RTC_DRV_XGENE=y +CONFIG_RTC_DRV_S3C=y +CONFIG_DMADEVICES=y +CONFIG_PL330_DMA=y +CONFIG_TEGRA20_APB_DMA=y +CONFIG_QCOM_BAM_DMA=y +CONFIG_QCOM_HIDMA_MGMT=y +CONFIG_QCOM_HIDMA=y +CONFIG_RCAR_DMAC=y +CONFIG_VFIO=y +CONFIG_VFIO_PCI=y +CONFIG_VIRTIO_PCI=y +CONFIG_VIRTIO_BALLOON=y +CONFIG_VIRTIO_MMIO=y +CONFIG_XEN_GNTDEV=y +CONFIG_XEN_GRANT_DEV_ALLOC=y +CONFIG_COMMON_CLK_SCPI=y +CONFIG_COMMON_CLK_CS2000_CP=y +CONFIG_COMMON_CLK_S2MPS11=y +CONFIG_CLK_QORIQ=y +CONFIG_COMMON_CLK_QCOM=y +CONFIG_MSM_GCC_8916=y +CONFIG_MSM_MMCC_8996=y +CONFIG_HWSPINLOCK_QCOM=y +CONFIG_MAILBOX=y +CONFIG_ARM_MHU=y +CONFIG_HI6220_MBOX=y +CONFIG_ARM_SMMU=y +CONFIG_QCOM_SMEM=y +CONFIG_QCOM_SMD=y +CONFIG_QCOM_SMD_RPM=y +CONFIG_ARCH_TEGRA_132_SOC=y +CONFIG_ARCH_TEGRA_210_SOC=y +CONFIG_EXTCON_USB_GPIO=y +CONFIG_PWM=y +CONFIG_PWM_TEGRA=m +CONFIG_COMMON_RESET_HI6220=y +CONFIG_PHY_RCAR_GEN3_USB2=y +CONFIG_PHY_HI6220_USB=y +CONFIG_PHY_XGENE=y +CONFIG_PHY_TEGRA_XUSB=y +CONFIG_ARM_SCPI_PROTOCOL=y +CONFIG_ACPI=y +CONFIG_IIO=y +CONFIG_EXYNOS_ADC=y +CONFIG_PWM_SAMSUNG=y +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +CONFIG_EXT4_FS_POSIX_ACL=y +CONFIG_BTRFS_FS=m +CONFIG_BTRFS_FS_POSIX_ACL=y +CONFIG_FANOTIFY=y +CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y +CONFIG_QUOTA=y +CONFIG_AUTOFS4_FS=y +CONFIG_FUSE_FS=m +CONFIG_CUSE=m +CONFIG_OVERLAY_FS=m +CONFIG_VFAT_FS=y +CONFIG_TMPFS=y +CONFIG_HUGETLBFS=y +CONFIG_CONFIGFS_FS=y +CONFIG_EFIVAR_FS=y +CONFIG_SQUASHFS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V4=y +CONFIG_NFS_V4_1=y +CONFIG_NFS_V4_2=y +CONFIG_ROOT_NFS=y +CONFIG_9P_FS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_VIRTUALIZATION=y +CONFIG_KVM=y +CONFIG_PRINTK_TIME=y +CONFIG_DEBUG_INFO=y +CONFIG_DEBUG_FS=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_KERNEL=y +CONFIG_LOCKUP_DETECTOR=y +# CONFIG_SCHED_DEBUG is not set +# CONFIG_DEBUG_PREEMPT is not set +# CONFIG_FTRACE is not set +CONFIG_MEMTEST=y +CONFIG_SECURITY=y +CONFIG_CRYPTO_ECHAINIV=y +CONFIG_CRYPTO_ANSI_CPRNG=y +CONFIG_ARM64_CRYPTO=y +CONFIG_CRYPTO_SHA1_ARM64_CE=y +CONFIG_CRYPTO_SHA2_ARM64_CE=y +CONFIG_CRYPTO_GHASH_ARM64_CE=y +CONFIG_CRYPTO_AES_ARM64_CE_CCM=y +CONFIG_CRYPTO_AES_ARM64_CE_BLK=y +# CONFIG_CRYPTO_AES_ARM64_NEON_BLK is not set +CONFIG_CRYPTO_CRC32_ARM64=y +CONFIG_TEE=y +CONFIG_OPTEE=y diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild index 44e1d7f10add..28196b18e394 100644 --- a/arch/arm64/include/asm/Kbuild +++ b/arch/arm64/include/asm/Kbuild @@ -1,7 +1,6 @@ generic-y += bugs.h generic-y += clkdev.h generic-y += cputime.h -generic-y += current.h generic-y += delay.h generic-y += div64.h generic-y += dma.h diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index bfcfec3590f6..a2597e3f70ad 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -42,6 +42,15 @@ msr daifclr, #2 .endm + .macro save_and_disable_irq, flags + mrs \flags, daif + msr daifset, #2 + .endm + + .macro restore_irq, flags + msr daif, \flags + .endm + /* * Enable and disable debug exceptions. */ @@ -239,14 +248,25 @@ lr .req x30 // link register .endm /* + * @dst: Result of per_cpu(sym, smp_processor_id()) * @sym: The name of the per-cpu variable - * @reg: Result of per_cpu(sym, smp_processor_id()) * @tmp: scratch register */ - .macro this_cpu_ptr, sym, reg, tmp - adr_l \reg, \sym + .macro adr_this_cpu, dst, sym, tmp + adr_l \dst, \sym mrs \tmp, tpidr_el1 - add \reg, \reg, \tmp + add \dst, \dst, \tmp + .endm + + /* + * @dst: Result of READ_ONCE(per_cpu(sym, smp_processor_id())) + * @sym: The name of the per-cpu variable + * @tmp: scratch register + */ + .macro ldr_this_cpu dst, sym, tmp + adr_l \dst, \sym + mrs \tmp, tpidr_el1 + ldr \dst, [\dst, \tmp] .endm /* @@ -432,6 +452,26 @@ alternative_endif movk \reg, :abs_g0_nc:\val .endm +/* + * Return the current thread_info. + */ + .macro get_thread_info, rd + mrs \rd, sp_el0 + .endm + +/* + * Errata workaround post TTBR0_EL1 update. + */ + .macro post_ttbr0_update_workaround +#ifdef CONFIG_CAVIUM_ERRATUM_27456 +alternative_if ARM64_WORKAROUND_CAVIUM_27456 + ic iallu + dsb nsh + isb +alternative_else_nop_endif +#endif + .endm + .macro pte_to_phys, phys, pte and \phys, \pte, #(((1 << (48 - PAGE_SHIFT)) - 1) << PAGE_SHIFT) .endm diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h index 2e5fb976a572..15478762dbbd 100644 --- a/arch/arm64/include/asm/cacheflush.h +++ b/arch/arm64/include/asm/cacheflush.h @@ -149,5 +149,6 @@ int set_memory_ro(unsigned long addr, int numpages); int set_memory_rw(unsigned long addr, int numpages); int set_memory_x(unsigned long addr, int numpages); int set_memory_nx(unsigned long addr, int numpages); +int set_memory_valid(unsigned long addr, unsigned long size, int enable); #endif diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 0bc0b1de90c4..51afac1421e9 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -208,6 +208,12 @@ static inline bool system_supports_mixed_endian_el0(void) return id_aa64mmfr0_mixed_endian_el0(read_system_reg(SYS_ID_AA64MMFR0_EL1)); } +static inline bool system_uses_ttbr0_pan(void) +{ + return IS_ENABLED(CONFIG_ARM64_SW_TTBR0_PAN) && + !cpus_have_cap(ARM64_HAS_PAN); +} + #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm64/include/asm/current.h b/arch/arm64/include/asm/current.h new file mode 100644 index 000000000000..86c404171305 --- /dev/null +++ b/arch/arm64/include/asm/current.h @@ -0,0 +1,30 @@ +#ifndef __ASM_CURRENT_H +#define __ASM_CURRENT_H + +#include <linux/compiler.h> + +#include <asm/sysreg.h> + +#ifndef __ASSEMBLY__ + +struct task_struct; + +/* + * We don't use read_sysreg() as we want the compiler to cache the value where + * possible. + */ +static __always_inline struct task_struct *get_current(void) +{ + unsigned long sp_el0; + + asm ("mrs %0, sp_el0" : "=r" (sp_el0)); + + return (struct task_struct *)sp_el0; +} + +#define current get_current() + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_CURRENT_H */ + diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h index a9e54aad15ef..3a405dccb6cf 100644 --- a/arch/arm64/include/asm/efi.h +++ b/arch/arm64/include/asm/efi.h @@ -1,6 +1,7 @@ #ifndef _ASM_EFI_H #define _ASM_EFI_H +#include <asm/cpufeature.h> #include <asm/io.h> #include <asm/mmu_context.h> #include <asm/neon.h> @@ -75,7 +76,30 @@ static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) static inline void efi_set_pgd(struct mm_struct *mm) { - switch_mm(NULL, mm, NULL); + __switch_mm(mm); + + if (system_uses_ttbr0_pan()) { + if (mm != current->active_mm) { + /* + * Update the current thread's saved ttbr0 since it is + * restored as part of a return from exception. Set + * the hardware TTBR0_EL1 using cpu_switch_mm() + * directly to enable potential errata workarounds. + */ + update_saved_ttbr0(current, mm); + cpu_switch_mm(mm->pgd, mm); + } else { + /* + * Defer the switch to the current thread's TTBR0_EL1 + * until uaccess_enable(). Restore the current + * thread's saved ttbr0 corresponding to its active_mm + * (if different from init_mm). + */ + cpu_set_reserved_ttbr0(); + if (current->active_mm != &init_mm) + update_saved_ttbr0(current, current->active_mm); + } + } } void efi_virtmap_load(void); diff --git a/arch/arm64/include/asm/futex.h b/arch/arm64/include/asm/futex.h index 2a5090fb9113..a891bb6bb3d4 100644 --- a/arch/arm64/include/asm/futex.h +++ b/arch/arm64/include/asm/futex.h @@ -21,15 +21,12 @@ #include <linux/futex.h> #include <linux/uaccess.h> -#include <asm/alternative.h> -#include <asm/cpufeature.h> #include <asm/errno.h> -#include <asm/sysreg.h> #define __futex_atomic_op(insn, ret, oldval, uaddr, tmp, oparg) \ +do { \ + uaccess_enable(); \ asm volatile( \ - ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, \ - CONFIG_ARM64_PAN) \ " prfm pstl1strm, %2\n" \ "1: ldxr %w1, %2\n" \ insn "\n" \ @@ -44,11 +41,11 @@ " .popsection\n" \ _ASM_EXTABLE(1b, 4b) \ _ASM_EXTABLE(2b, 4b) \ - ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, \ - CONFIG_ARM64_PAN) \ : "=&r" (ret), "=&r" (oldval), "+Q" (*uaddr), "=&r" (tmp) \ : "r" (oparg), "Ir" (-EFAULT) \ - : "memory") + : "memory"); \ + uaccess_disable(); \ +} while (0) static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr) @@ -102,8 +99,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *_uaddr, return -EFAULT; uaddr = __uaccess_mask_ptr(_uaddr); + uaccess_enable(); asm volatile("// futex_atomic_cmpxchg_inatomic\n" -ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, CONFIG_ARM64_PAN) " prfm pstl1strm, %2\n" "1: ldxr %w1, %2\n" " sub %w3, %w1, %w4\n" @@ -118,10 +115,10 @@ ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, CONFIG_ARM64_PAN) " .popsection\n" _ASM_EXTABLE(1b, 4b) _ASM_EXTABLE(2b, 4b) -ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, CONFIG_ARM64_PAN) : "+r" (ret), "=&r" (val), "+Q" (*uaddr), "=&r" (tmp) : "r" (oldval), "r" (newval), "Ir" (-EFAULT) : "memory"); + uaccess_disable(); *uval = val; return ret; diff --git a/arch/arm64/include/asm/hardirq.h b/arch/arm64/include/asm/hardirq.h index 8740297dac77..1473fc2f7ab7 100644 --- a/arch/arm64/include/asm/hardirq.h +++ b/arch/arm64/include/asm/hardirq.h @@ -20,7 +20,7 @@ #include <linux/threads.h> #include <asm/irq.h> -#define NR_IPI 6 +#define NR_IPI 7 typedef struct { unsigned int __softirq_pending; diff --git a/arch/arm64/include/asm/kernel-pgtable.h b/arch/arm64/include/asm/kernel-pgtable.h index 7e51d1b57c0c..7803343e5881 100644 --- a/arch/arm64/include/asm/kernel-pgtable.h +++ b/arch/arm64/include/asm/kernel-pgtable.h @@ -19,6 +19,7 @@ #ifndef __ASM_KERNEL_PGTABLE_H #define __ASM_KERNEL_PGTABLE_H +#include <asm/pgtable.h> #include <asm/sparsemem.h> /* @@ -54,6 +55,12 @@ #define SWAPPER_DIR_SIZE (SWAPPER_PGTABLE_LEVELS * PAGE_SIZE) #define IDMAP_DIR_SIZE (IDMAP_PGTABLE_LEVELS * PAGE_SIZE) +#ifdef CONFIG_ARM64_SW_TTBR0_PAN +#define RESERVED_TTBR0_SIZE (PAGE_SIZE) +#else +#define RESERVED_TTBR0_SIZE (0) +#endif + /* Initial memory map size */ #if ARM64_SWAPPER_USES_SECTION_MAPS #define SWAPPER_BLOCK_SHIFT SECTION_SHIFT diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index 04744dc5fb61..e17f0529a882 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -40,9 +40,59 @@ static inline void crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs) { - /* Empty routine needed to avoid build errors. */ + if (oldregs) { + memcpy(newregs, oldregs, sizeof(*newregs)); + } else { + u64 tmp1, tmp2; + + __asm__ __volatile__ ( + "stp x0, x1, [%2, #16 * 0]\n" + "stp x2, x3, [%2, #16 * 1]\n" + "stp x4, x5, [%2, #16 * 2]\n" + "stp x6, x7, [%2, #16 * 3]\n" + "stp x8, x9, [%2, #16 * 4]\n" + "stp x10, x11, [%2, #16 * 5]\n" + "stp x12, x13, [%2, #16 * 6]\n" + "stp x14, x15, [%2, #16 * 7]\n" + "stp x16, x17, [%2, #16 * 8]\n" + "stp x18, x19, [%2, #16 * 9]\n" + "stp x20, x21, [%2, #16 * 10]\n" + "stp x22, x23, [%2, #16 * 11]\n" + "stp x24, x25, [%2, #16 * 12]\n" + "stp x26, x27, [%2, #16 * 13]\n" + "stp x28, x29, [%2, #16 * 14]\n" + "mov %0, sp\n" + "stp x30, %0, [%2, #16 * 15]\n" + + "/* faked current PSTATE */\n" + "mrs %0, CurrentEL\n" + "mrs %1, SPSEL\n" + "orr %0, %0, %1\n" + "mrs %1, DAIF\n" + "orr %0, %0, %1\n" + "mrs %1, NZCV\n" + "orr %0, %0, %1\n" + /* pc */ + "adr %1, 1f\n" + "1:\n" + "stp %1, %0, [%2, #16 * 16]\n" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (newregs) + : "memory" + ); + } } +#if defined(CONFIG_KEXEC_CORE) && defined(CONFIG_HIBERNATION) +extern bool crash_is_nosave(unsigned long pfn); +extern void crash_prepare_suspend(void); +extern void crash_post_resume(void); +#else +static inline bool crash_is_nosave(unsigned long pfn) {return false; } +static inline void crash_prepare_suspend(void) {} +static inline void crash_post_resume(void) {} +#endif + #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index b96c4799f881..041014cee28b 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -23,6 +23,7 @@ #include <linux/sched.h> #include <asm/cacheflush.h> +#include <asm/cpufeature.h> #include <asm/proc-fns.h> #include <asm-generic/mm_hooks.h> #include <asm/cputype.h> @@ -110,7 +111,7 @@ static inline void cpu_uninstall_idmap(void) local_flush_tlb_all(); cpu_set_default_tcr_t0sz(); - if (mm != &init_mm) + if (mm != &init_mm && !system_uses_ttbr0_pan()) cpu_switch_mm(mm->pgd, mm); } @@ -170,20 +171,26 @@ enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { } -/* - * This is the actual mm switch as far as the scheduler - * is concerned. No registers are touched. We avoid - * calling the CPU specific function when the mm hasn't - * actually changed. - */ -static inline void -switch_mm(struct mm_struct *prev, struct mm_struct *next, - struct task_struct *tsk) +#ifdef CONFIG_ARM64_SW_TTBR0_PAN +static inline void update_saved_ttbr0(struct task_struct *tsk, + struct mm_struct *mm) { - unsigned int cpu = smp_processor_id(); + if (system_uses_ttbr0_pan()) { + BUG_ON(mm->pgd == swapper_pg_dir); + task_thread_info(tsk)->ttbr0 = + virt_to_phys(mm->pgd) | ASID(mm) << 48; + } +} +#else +static inline void update_saved_ttbr0(struct task_struct *tsk, + struct mm_struct *mm) +{ +} +#endif - if (prev == next) - return; +static inline void __switch_mm(struct mm_struct *next) +{ + unsigned int cpu = smp_processor_id(); /* * init_mm.pgd does not contain any user mappings and it is always @@ -197,8 +204,26 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next, check_and_switch_context(next, cpu); } +static inline void +switch_mm(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) +{ + if (prev != next) + __switch_mm(next); + + /* + * Update the saved TTBR0_EL1 of the scheduled-in task as the previous + * value may have not been initialised yet (activate_mm caller) or the + * ASID has changed since the last run (following the context switch + * of another thread of the same process). Avoid setting the reserved + * TTBR0_EL1 to swapper_pg_dir (init_mm; e.g. via idle_task_exit). + */ + if (next != &init_mm) + update_saved_ttbr0(tsk, next); +} + #define deactivate_mm(tsk,mm) do { } while (0) -#define activate_mm(prev,next) switch_mm(prev, next, NULL) +#define activate_mm(prev,next) switch_mm(prev, next, current) void verify_cpu_asid_bits(void); diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percpu.h index 5394c8405e66..3bd498e4de4c 100644 --- a/arch/arm64/include/asm/percpu.h +++ b/arch/arm64/include/asm/percpu.h @@ -16,6 +16,8 @@ #ifndef __ASM_PERCPU_H #define __ASM_PERCPU_H +#include <asm/stack_pointer.h> + static inline void set_my_cpu_offset(unsigned long off) { asm volatile("msr tpidr_el1, %0" :: "r" (off) : "memory"); @@ -101,16 +103,16 @@ static inline unsigned long __percpu_read(void *ptr, int size) switch (size) { case 1: - ret = ACCESS_ONCE(*(u8 *)ptr); + ret = READ_ONCE(*(u8 *)ptr); break; case 2: - ret = ACCESS_ONCE(*(u16 *)ptr); + ret = READ_ONCE(*(u16 *)ptr); break; case 4: - ret = ACCESS_ONCE(*(u32 *)ptr); + ret = READ_ONCE(*(u32 *)ptr); break; case 8: - ret = ACCESS_ONCE(*(u64 *)ptr); + ret = READ_ONCE(*(u64 *)ptr); break; default: BUILD_BUG(); @@ -123,16 +125,16 @@ static inline void __percpu_write(void *ptr, unsigned long val, int size) { switch (size) { case 1: - ACCESS_ONCE(*(u8 *)ptr) = (u8)val; + WRITE_ONCE(*(u8 *)ptr, (u8)val); break; case 2: - ACCESS_ONCE(*(u16 *)ptr) = (u16)val; + WRITE_ONCE(*(u16 *)ptr, (u16)val); break; case 4: - ACCESS_ONCE(*(u32 *)ptr) = (u32)val; + WRITE_ONCE(*(u32 *)ptr, (u32)val); break; case 8: - ACCESS_ONCE(*(u64 *)ptr) = (u64)val; + WRITE_ONCE(*(u64 *)ptr, (u64)val); break; default: BUILD_BUG(); diff --git a/arch/arm64/include/asm/perf_event.h b/arch/arm64/include/asm/perf_event.h index 38b6a2b49d68..8d5cbec17d80 100644 --- a/arch/arm64/include/asm/perf_event.h +++ b/arch/arm64/include/asm/perf_event.h @@ -17,6 +17,8 @@ #ifndef __ASM_PERF_EVENT_H #define __ASM_PERF_EVENT_H +#include <asm/stack_pointer.h> + #define ARMV8_PMU_MAX_COUNTERS 32 #define ARMV8_PMU_COUNTER_MASK (ARMV8_PMU_MAX_COUNTERS - 1) diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h index 022644704a93..55f08c5acfad 100644 --- a/arch/arm64/include/asm/smp.h +++ b/arch/arm64/include/asm/smp.h @@ -29,11 +29,22 @@ #ifndef __ASSEMBLY__ +#include <asm/percpu.h> + #include <linux/threads.h> #include <linux/cpumask.h> #include <linux/thread_info.h> -#define raw_smp_processor_id() (current_thread_info()->cpu) +DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number); + +/* + * We don't use this_cpu_read(cpu_number) as that has implicit writes to + * preempt_count, and associated (compiler) barriers, that we'd like to avoid + * the expense of. If we're preemptible, the value can be stale at use anyway. + * And we can't use this_cpu_ptr() either, as that winds up recursing back + * here under CONFIG_DEBUG_PREEMPT=y. + */ +#define raw_smp_processor_id() (*raw_cpu_ptr(&cpu_number)) struct seq_file; @@ -73,6 +84,7 @@ asmlinkage void secondary_start_kernel(void); */ struct secondary_data { void *stack; + struct task_struct *task; long status; }; @@ -136,6 +148,9 @@ static inline void cpu_panic_kernel(void) */ bool cpus_are_stuck_in_kernel(void); +extern void smp_send_crash_stop(void); +extern bool smp_crash_stop_failed(void); + #endif /* ifndef __ASSEMBLY__ */ #endif /* ifndef __ASM_SMP_H */ diff --git a/arch/arm64/include/asm/stack_pointer.h b/arch/arm64/include/asm/stack_pointer.h new file mode 100644 index 000000000000..ffcdf742cddf --- /dev/null +++ b/arch/arm64/include/asm/stack_pointer.h @@ -0,0 +1,9 @@ +#ifndef __ASM_STACK_POINTER_H +#define __ASM_STACK_POINTER_H + +/* + * how to get the current stack pointer from C + */ +register unsigned long current_stack_pointer asm ("sp"); + +#endif /* __ASM_STACK_POINTER_H */ diff --git a/arch/arm64/include/asm/suspend.h b/arch/arm64/include/asm/suspend.h index b8a313fd7a09..de5600f40adf 100644 --- a/arch/arm64/include/asm/suspend.h +++ b/arch/arm64/include/asm/suspend.h @@ -1,7 +1,7 @@ #ifndef __ASM_SUSPEND_H #define __ASM_SUSPEND_H -#define NR_CTX_REGS 10 +#define NR_CTX_REGS 12 #define NR_CALLEE_SAVED_REGS 12 /* diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index e9ea5a6bd449..08580fa45677 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -36,58 +36,31 @@ struct task_struct; +#include <asm/stack_pointer.h> #include <asm/types.h> typedef unsigned long mm_segment_t; /* * low level task data that entry.S needs immediate access to. - * __switch_to() assumes cpu_context follows immediately after cpu_domain. */ struct thread_info { unsigned long flags; /* low level flags */ mm_segment_t addr_limit; /* address limit */ - struct task_struct *task; /* main task structure */ +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + u64 ttbr0; /* saved TTBR0_EL1 */ +#endif int preempt_count; /* 0 => preemptable, <0 => bug */ - int cpu; /* cpu */ }; #define INIT_THREAD_INFO(tsk) \ { \ - .task = &tsk, \ - .flags = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ .addr_limit = KERNEL_DS, \ } -#define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) -/* - * how to get the current stack pointer from C - */ -register unsigned long current_stack_pointer asm ("sp"); - -/* - * how to get the thread information struct from C - */ -static inline struct thread_info *current_thread_info(void) __attribute_const__; - -/* - * struct thread_info can be accessed directly via sp_el0. - * - * We don't use read_sysreg() as we want the compiler to cache the value where - * possible. - */ -static inline struct thread_info *current_thread_info(void) -{ - unsigned long sp_el0; - - asm ("mrs %0, sp_el0" : "=r" (sp_el0)); - - return (struct thread_info *)sp_el0; -} - #define thread_saved_pc(tsk) \ ((unsigned long)(tsk->thread.cpu_context.pc)) #define thread_saved_sp(tsk) \ diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index 1d047d6c421b..71a8ab47fabc 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -18,6 +18,12 @@ #ifndef __ASM_UACCESS_H #define __ASM_UACCESS_H +#include <asm/alternative.h> +#include <asm/kernel-pgtable.h> +#include <asm/sysreg.h> + +#ifndef __ASSEMBLY__ + /* * User space memory access functions */ @@ -26,11 +32,9 @@ #include <linux/string.h> #include <linux/thread_info.h> -#include <asm/alternative.h> #include <asm/cpufeature.h> #include <asm/processor.h> #include <asm/ptrace.h> -#include <asm/sysreg.h> #include <asm/errno.h> #include <asm/memory.h> #include <asm/compiler.h> @@ -136,6 +140,99 @@ static inline unsigned long __range_ok(unsigned long addr, unsigned long size) " .popsection\n" /* + * User access enabling/disabling. + */ +#ifdef CONFIG_ARM64_SW_TTBR0_PAN +static inline void __uaccess_ttbr0_disable(void) +{ + unsigned long ttbr; + + /* reserved_ttbr0 placed at the end of swapper_pg_dir */ + ttbr = read_sysreg(ttbr1_el1) + SWAPPER_DIR_SIZE; + write_sysreg(ttbr, ttbr0_el1); + isb(); +} + +static inline void __uaccess_ttbr0_enable(void) +{ + unsigned long flags; + + /* + * Disable interrupts to avoid preemption between reading the 'ttbr0' + * variable and the MSR. A context switch could trigger an ASID + * roll-over and an update of 'ttbr0'. + */ + local_irq_save(flags); + write_sysreg(current_thread_info()->ttbr0, ttbr0_el1); + isb(); + local_irq_restore(flags); +} + +static inline bool uaccess_ttbr0_disable(void) +{ + if (!system_uses_ttbr0_pan()) + return false; + __uaccess_ttbr0_disable(); + return true; +} + +static inline bool uaccess_ttbr0_enable(void) +{ + if (!system_uses_ttbr0_pan()) + return false; + __uaccess_ttbr0_enable(); + return true; +} +#else +static inline bool uaccess_ttbr0_disable(void) +{ + return false; +} + +static inline bool uaccess_ttbr0_enable(void) +{ + return false; +} +#endif + +#define __uaccess_disable(alt) \ +do { \ + if (!uaccess_ttbr0_disable()) \ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), alt, \ + CONFIG_ARM64_PAN)); \ +} while (0) + +#define __uaccess_enable(alt) \ +do { \ + if (!uaccess_ttbr0_enable()) \ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(0), alt, \ + CONFIG_ARM64_PAN)); \ +} while (0) + +static inline void uaccess_disable(void) +{ + __uaccess_disable(ARM64_HAS_PAN); +} + +static inline void uaccess_enable(void) +{ + __uaccess_enable(ARM64_HAS_PAN); +} + +/* + * These functions are no-ops when UAO is present. + */ +static inline void uaccess_disable_not_uao(void) +{ + __uaccess_disable(ARM64_ALT_PAN_NOT_UAO); +} + +static inline void uaccess_enable_not_uao(void) +{ + __uaccess_enable(ARM64_ALT_PAN_NOT_UAO); +} + +/* * Sanitise a uaccess pointer such that it becomes NULL if above the * current addr_limit. */ @@ -182,8 +279,7 @@ static inline void __user *__uaccess_mask_ptr(const void __user *ptr) do { \ unsigned long __gu_val; \ __chk_user_ptr(ptr); \ - asm(ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_ALT_PAN_NOT_UAO,\ - CONFIG_ARM64_PAN)); \ + uaccess_enable_not_uao(); \ switch (sizeof(*(ptr))) { \ case 1: \ __get_user_asm("ldrb", "ldtrb", "%w", __gu_val, (ptr), \ @@ -204,9 +300,8 @@ do { \ default: \ BUILD_BUG(); \ } \ + uaccess_disable_not_uao(); \ (x) = (__force __typeof__(*(ptr)))__gu_val; \ - asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_ALT_PAN_NOT_UAO,\ - CONFIG_ARM64_PAN)); \ } while (0) #define __get_user_check(x, ptr, err) \ @@ -256,8 +351,7 @@ do { \ do { \ __typeof__(*(ptr)) __pu_val = (x); \ __chk_user_ptr(ptr); \ - asm(ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_ALT_PAN_NOT_UAO,\ - CONFIG_ARM64_PAN)); \ + uaccess_enable_not_uao(); \ switch (sizeof(*(ptr))) { \ case 1: \ __put_user_asm("strb", "sttrb", "%w", __pu_val, (ptr), \ @@ -278,8 +372,7 @@ do { \ default: \ BUILD_BUG(); \ } \ - asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_ALT_PAN_NOT_UAO,\ - CONFIG_ARM64_PAN)); \ + uaccess_disable_not_uao(); \ } while (0) #define __put_user_check(x, ptr, err) \ @@ -379,4 +472,66 @@ extern long strncpy_from_user(char *dest, const char __user *src, long count); extern __must_check long strlen_user(const char __user *str); extern __must_check long strnlen_user(const char __user *str, long n); +#else /* __ASSEMBLY__ */ + +#include <asm/assembler.h> + +/* + * User access enabling/disabling macros. + */ +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + .macro __uaccess_ttbr0_disable, tmp1 + mrs \tmp1, ttbr1_el1 // swapper_pg_dir + add \tmp1, \tmp1, #SWAPPER_DIR_SIZE // reserved_ttbr0 at the end of swapper_pg_dir + msr ttbr0_el1, \tmp1 // set reserved TTBR0_EL1 + isb + .endm + + .macro __uaccess_ttbr0_enable, tmp1 + get_thread_info \tmp1 + ldr \tmp1, [\tmp1, #TSK_TI_TTBR0] // load saved TTBR0_EL1 + msr ttbr0_el1, \tmp1 // set the non-PAN TTBR0_EL1 + isb + .endm + + .macro uaccess_ttbr0_disable, tmp1 +alternative_if_not ARM64_HAS_PAN + __uaccess_ttbr0_disable \tmp1 +alternative_else_nop_endif + .endm + + .macro uaccess_ttbr0_enable, tmp1, tmp2 +alternative_if_not ARM64_HAS_PAN + save_and_disable_irq \tmp2 // avoid preemption + __uaccess_ttbr0_enable \tmp1 + restore_irq \tmp2 +alternative_else_nop_endif + .endm +#else + .macro uaccess_ttbr0_disable, tmp1 + .endm + + .macro uaccess_ttbr0_enable, tmp1, tmp2 + .endm +#endif + +/* + * These macros are no-ops when UAO is present. + */ + .macro uaccess_disable_not_uao, tmp1 + uaccess_ttbr0_disable \tmp1 +alternative_if ARM64_ALT_PAN_NOT_UAO + SET_PSTATE_PAN(1) +alternative_else_nop_endif + .endm + + .macro uaccess_enable_not_uao, tmp1, tmp2 + uaccess_ttbr0_enable \tmp1, \tmp2 +alternative_if ARM64_ALT_PAN_NOT_UAO + SET_PSTATE_PAN(0) +alternative_else_nop_endif + .endm + +#endif /* __ASSEMBLY__ */ + #endif /* __ASM_UACCESS_H */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 74b8fd860714..5c26760225ea 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -50,6 +50,7 @@ arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o arm64-obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \ cpu-reset.o +arm64-obj-$(CONFIG_CRASH_DUMP) += crash_dump.o ifeq ($(CONFIG_KVM),y) arm64-obj-$(CONFIG_HARDEN_BRANCH_PREDICTOR) += bpi.o diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index c0ede237c14b..29d2ad8844a5 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -14,7 +14,6 @@ #include <linux/slab.h> #include <linux/sysctl.h> -#include <asm/alternative.h> #include <asm/cpufeature.h> #include <asm/insn.h> #include <asm/opcodes.h> @@ -285,10 +284,10 @@ static void __init register_insn_emulation_sysctl(struct ctl_table *table) #define __SWP_LL_SC_LOOPS 4 #define __user_swpX_asm(data, addr, res, temp, temp2, B) \ +do { \ + uaccess_enable(); \ __asm__ __volatile__( \ " mov %w3, %w7\n" \ - ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, \ - CONFIG_ARM64_PAN) \ "0: ldxr"B" %w2, [%4]\n" \ "1: stxr"B" %w0, %w1, [%4]\n" \ " cbz %w0, 2f\n" \ @@ -306,13 +305,13 @@ static void __init register_insn_emulation_sysctl(struct ctl_table *table) " .popsection" \ _ASM_EXTABLE(0b, 4b) \ _ASM_EXTABLE(1b, 4b) \ - ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, \ - CONFIG_ARM64_PAN) \ : "=&r" (res), "+r" (data), "=&r" (temp), "=&r" (temp2) \ : "r" ((unsigned long)addr), "i" (-EAGAIN), \ "i" (-EFAULT), \ "i" (__SWP_LL_SC_LOOPS) \ - : "memory") + : "memory"); \ + uaccess_disable(); \ +} while (0) #define __user_swp_asm(data, addr, res, temp, temp2) \ __user_swpX_asm(data, addr, res, temp, temp2, "") diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 5f4bf3c6f016..5d2d3560f186 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -37,11 +37,13 @@ int main(void) { DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); BLANK(); - DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); - DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); - DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit)); - DEFINE(TI_TASK, offsetof(struct thread_info, task)); - DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); + DEFINE(TSK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags)); + DEFINE(TSK_TI_PREEMPT, offsetof(struct task_struct, thread_info.preempt_count)); + DEFINE(TSK_TI_ADDR_LIMIT, offsetof(struct task_struct, thread_info.addr_limit)); +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + DEFINE(TSK_TI_TTBR0, offsetof(struct task_struct, thread_info.ttbr0)); +#endif + DEFINE(TSK_STACK, offsetof(struct task_struct, stack)); BLANK(); DEFINE(THREAD_CPU_CONTEXT, offsetof(struct task_struct, thread.cpu_context)); BLANK(); @@ -124,6 +126,7 @@ int main(void) DEFINE(TZ_DSTTIME, offsetof(struct timezone, tz_dsttime)); BLANK(); DEFINE(CPU_BOOT_STACK, offsetof(struct secondary_data, stack)); + DEFINE(CPU_BOOT_TASK, offsetof(struct secondary_data, task)); BLANK(); #ifdef CONFIG_KVM_ARM_HOST DEFINE(VCPU_CONTEXT, offsetof(struct kvm_vcpu, arch.ctxt)); diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index a0ee01202503..e60f6de1db09 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -47,6 +47,7 @@ unsigned int compat_elf_hwcap2 __read_mostly; #endif DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS); +EXPORT_SYMBOL(cpu_hwcaps); DEFINE_STATIC_KEY_ARRAY_FALSE(cpu_hwcap_keys, ARM64_NCAPS); EXPORT_SYMBOL(cpu_hwcap_keys); diff --git a/arch/arm64/kernel/crash_dump.c b/arch/arm64/kernel/crash_dump.c new file mode 100644 index 000000000000..f46d57c31443 --- /dev/null +++ b/arch/arm64/kernel/crash_dump.c @@ -0,0 +1,71 @@ +/* + * Routines for doing kexec-based kdump + * + * Copyright (C) 2017 Linaro Limited + * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> + * + * 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. + */ + +#include <linux/crash_dump.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/memblock.h> +#include <linux/uaccess.h> +#include <asm/memory.h> + +/** + * copy_oldmem_page() - copy one page from old kernel memory + * @pfn: page frame number to be copied + * @buf: buffer where the copied page is placed + * @csize: number of bytes to copy + * @offset: offset in bytes into the page + * @userbuf: if set, @buf is in a user address space + * + * This function copies one page from old kernel memory into buffer pointed by + * @buf. If @buf is in userspace, set @userbuf to %1. Returns number of bytes + * copied or negative error in case of failure. + */ +ssize_t copy_oldmem_page(unsigned long pfn, char *buf, + size_t csize, unsigned long offset, + int userbuf) +{ + void *vaddr; + + if (!csize) + return 0; + + vaddr = memremap(__pfn_to_phys(pfn), PAGE_SIZE, MEMREMAP_WB); + if (!vaddr) + return -ENOMEM; + + if (userbuf) { + if (copy_to_user((char __user *)buf, vaddr + offset, csize)) { + memunmap(vaddr); + return -EFAULT; + } + } else { + memcpy(buf, vaddr + offset, csize); + } + + memunmap(vaddr); + + return csize; +} + +/** + * elfcorehdr_read - read from ELF core header + * @buf: buffer where the data is placed + * @csize: number of bytes to read + * @ppos: address in the memory + * + * This function reads @count bytes from elf core header which exists + * on crash dump kernel's memory. + */ +ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos) +{ + memcpy(buf, phys_to_virt((phys_addr_t)*ppos), count); + return count; +} diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index b79e302d2a3e..f29afcd8db37 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -29,6 +29,8 @@ #include <asm/esr.h> #include <asm/irq.h> #include <asm/memory.h> +#include <asm/ptrace.h> +#include <asm/uaccess.h> #include <asm/mmu.h> #include <asm/processor.h> #include <asm/thread_info.h> @@ -117,25 +119,50 @@ alternative_else_nop_endif .if \el == 0 mrs x21, sp_el0 - mov tsk, sp - and tsk, tsk, #~(THREAD_SIZE - 1) // Ensure MDSCR_EL1.SS is clear, - ldr x19, [tsk, #TI_FLAGS] // since we can unmask debug + ldr_this_cpu tsk, __entry_task, x20 // Ensure MDSCR_EL1.SS is clear, + ldr x19, [tsk, #TSK_TI_FLAGS] // since we can unmask debug disable_step_tsk x19, x20 // exceptions when scheduling. mov x29, xzr // fp pointed to user-space .else add x21, sp, #S_FRAME_SIZE get_thread_info tsk - /* Save the task's original addr_limit and set USER_DS */ - ldr x20, [tsk, #TI_ADDR_LIMIT] + /* Save the task's original addr_limit and set USER_DS (TASK_SIZE_64) */ + ldr x20, [tsk, #TSK_TI_ADDR_LIMIT] str x20, [sp, #S_ORIG_ADDR_LIMIT] mov x20, #USER_DS - str x20, [tsk, #TI_ADDR_LIMIT] + str x20, [tsk, #TSK_TI_ADDR_LIMIT] /* No need to reset PSTATE.UAO, hardware's already set it to 0 for us */ .endif /* \el == 0 */ mrs x22, elr_el1 mrs x23, spsr_el1 stp lr, x21, [sp, #S_LR] + +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + /* + * Set the TTBR0 PAN bit in SPSR. When the exception is taken from + * EL0, there is no need to check the state of TTBR0_EL1 since + * accesses are always enabled. + * Note that the meaning of this bit differs from the ARMv8.1 PAN + * feature as all TTBR0_EL1 accesses are disabled, not just those to + * user mappings. + */ +alternative_if ARM64_HAS_PAN + b 1f // skip TTBR0 PAN +alternative_else_nop_endif + + .if \el != 0 + mrs x21, ttbr0_el1 + tst x21, #0xffff << 48 // Check for the reserved ASID + orr x23, x23, #PSR_PAN_BIT // Set the emulated PAN in the saved SPSR + b.eq 1f // TTBR0 access already disabled + and x23, x23, #~PSR_PAN_BIT // Clear the emulated PAN in the saved SPSR + .endif + + __uaccess_ttbr0_disable x21 +1: +#endif + stp x22, x23, [sp, #S_PC] /* @@ -166,7 +193,7 @@ alternative_else_nop_endif .if \el != 0 /* Restore the task's original addr_limit. */ ldr x20, [sp, #S_ORIG_ADDR_LIMIT] - str x20, [tsk, #TI_ADDR_LIMIT] + str x20, [tsk, #TSK_TI_ADDR_LIMIT] /* No need to restore UAO, it will be restored from SPSR_EL1 */ .endif @@ -174,6 +201,40 @@ alternative_else_nop_endif ldp x21, x22, [sp, #S_PC] // load ELR, SPSR .if \el == 0 ct_user_enter + .endif + +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + /* + * Restore access to TTBR0_EL1. If returning to EL0, no need for SPSR + * PAN bit checking. + */ +alternative_if ARM64_HAS_PAN + b 2f // skip TTBR0 PAN +alternative_else_nop_endif + + .if \el != 0 + tbnz x22, #22, 1f // Skip re-enabling TTBR0 access if the PSR_PAN_BIT is set + .endif + + __uaccess_ttbr0_enable x0 + + .if \el == 0 + /* + * Enable errata workarounds only if returning to user. The only + * workaround currently required for TTBR0_EL1 changes are for the + * Cavium erratum 27456 (broadcast TLBI instructions may cause I-cache + * corruption). + */ + post_ttbr0_update_workaround + .endif +1: + .if \el != 0 + and x22, x22, #~PSR_PAN_BIT // ARMv8.0 CPUs do not understand this bit + .endif +2: +#endif + + .if \el == 0 ldr x23, [sp, #S_SP] // load return stack pointer msr sp_el0, x23 tst x22, #PSR_MODE32_BIT // native task? @@ -191,6 +252,7 @@ alternative_else_nop_endif #endif 3: .endif + msr elr_el1, x21 // set up the return data msr spsr_el1, x22 ldp x0, x1, [sp, #16 * 0] @@ -227,23 +289,20 @@ alternative_insn eret, nop, ARM64_UNMAP_KERNEL_AT_EL0 .endif .endm - .macro get_thread_info, rd - mrs \rd, sp_el0 - .endm - .macro irq_stack_entry mov x19, sp // preserve the original sp /* - * Compare sp with the current thread_info, if the top - * ~(THREAD_SIZE - 1) bits match, we are on a task stack, and - * should switch to the irq stack. + * Compare sp with the base of the task stack. + * If the top ~(THREAD_SIZE - 1) bits match, we are on a task stack, + * and should switch to the irq stack. */ - and x25, x19, #~(THREAD_SIZE - 1) - cmp x25, tsk - b.ne 9998f + ldr x25, [tsk, TSK_STACK] + eor x25, x25, x19 + and x25, x25, #~(THREAD_SIZE - 1) + cbnz x25, 9998f - this_cpu_ptr irq_stack, x25, x26 + adr_this_cpu x25, irq_stack, x26 mov x26, #IRQ_STACK_START_SP add x26, x25, x26 @@ -471,9 +530,9 @@ el1_irq: irq_handler #ifdef CONFIG_PREEMPT - ldr w24, [tsk, #TI_PREEMPT] // get preempt count + ldr w24, [tsk, #TSK_TI_PREEMPT] // get preempt count cbnz w24, 1f // preempt count != 0 - ldr x0, [tsk, #TI_FLAGS] // get flags + ldr x0, [tsk, #TSK_TI_FLAGS] // get flags tbz x0, #TIF_NEED_RESCHED, 1f // needs rescheduling? bl el1_preempt 1: @@ -488,7 +547,7 @@ ENDPROC(el1_irq) el1_preempt: mov x24, lr 1: bl preempt_schedule_irq // irq en/disable is done inside - ldr x0, [tsk, #TI_FLAGS] // get new tasks TI_FLAGS + ldr x0, [tsk, #TSK_TI_FLAGS] // get new tasks TI_FLAGS tbnz x0, #TIF_NEED_RESCHED, 1b // needs rescheduling? ret x24 #endif @@ -727,8 +786,7 @@ ENTRY(cpu_switch_to) ldp x29, x9, [x8], #16 ldr lr, [x8] mov sp, x9 - and x9, x9, #~(THREAD_SIZE - 1) - msr sp_el0, x9 + msr sp_el0, x1 ret ENDPROC(cpu_switch_to) @@ -739,7 +797,7 @@ ENDPROC(cpu_switch_to) ret_fast_syscall: disable_irq // disable interrupts str x0, [sp, #S_X0] // returned x0 - ldr x1, [tsk, #TI_FLAGS] // re-check for syscall tracing + ldr x1, [tsk, #TSK_TI_FLAGS] // re-check for syscall tracing and x2, x1, #_TIF_SYSCALL_WORK cbnz x2, ret_fast_syscall_trace and x2, x1, #_TIF_WORK_MASK @@ -759,14 +817,14 @@ work_pending: #ifdef CONFIG_TRACE_IRQFLAGS bl trace_hardirqs_on // enabled while in userspace #endif - ldr x1, [tsk, #TI_FLAGS] // re-check for single-step + ldr x1, [tsk, #TSK_TI_FLAGS] // re-check for single-step b finish_ret_to_user /* * "slow" syscall return path. */ ret_to_user: disable_irq // disable interrupts - ldr x1, [tsk, #TI_FLAGS] + ldr x1, [tsk, #TSK_TI_FLAGS] and x2, x1, #_TIF_WORK_MASK cbnz x2, work_pending finish_ret_to_user: @@ -799,7 +857,7 @@ el0_svc_naked: // compat entry point enable_dbg_and_irq ct_user_exit 1 - ldr x16, [tsk, #TI_FLAGS] // check for syscall hooks + ldr x16, [tsk, #TSK_TI_FLAGS] // check for syscall hooks tst x16, #_TIF_SYSCALL_WORK b.ne __sys_trace cmp scno, sc_nr // check upper syscall limit diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index fa52817d84c5..d479185d29c9 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -326,14 +326,14 @@ __create_page_tables: * dirty cache lines being evicted. */ adrp x0, idmap_pg_dir - adrp x1, swapper_pg_dir + SWAPPER_DIR_SIZE + adrp x1, swapper_pg_dir + SWAPPER_DIR_SIZE + RESERVED_TTBR0_SIZE bl __inval_cache_range /* * Clear the idmap and swapper page tables. */ adrp x0, idmap_pg_dir - adrp x6, swapper_pg_dir + SWAPPER_DIR_SIZE + adrp x6, swapper_pg_dir + SWAPPER_DIR_SIZE + RESERVED_TTBR0_SIZE 1: stp xzr, xzr, [x0], #16 stp xzr, xzr, [x0], #16 stp xzr, xzr, [x0], #16 @@ -412,7 +412,7 @@ __create_page_tables: * tables again to remove any speculatively loaded cache lines. */ adrp x0, idmap_pg_dir - adrp x1, swapper_pg_dir + SWAPPER_DIR_SIZE + adrp x1, swapper_pg_dir + SWAPPER_DIR_SIZE + RESERVED_TTBR0_SIZE dmb sy bl __inval_cache_range @@ -428,7 +428,8 @@ ENDPROC(__create_page_tables) __primary_switched: adrp x4, init_thread_union add sp, x4, #THREAD_SIZE - msr sp_el0, x4 // Save thread_info + adr_l x5, init_task + msr sp_el0, x5 // Save thread_info adr_l x8, vectors // load VBAR_EL1 with virtual msr vbar_el1, x8 // vector table address @@ -700,10 +701,10 @@ __secondary_switched: isb adr_l x0, secondary_data - ldr x0, [x0, #CPU_BOOT_STACK] // get secondary_data.stack - mov sp, x0 - and x0, x0, #~(THREAD_SIZE - 1) - msr sp_el0, x0 // save thread_info + ldr x1, [x0, #CPU_BOOT_STACK] // get secondary_data.stack + mov sp, x1 + ldr x2, [x0, #CPU_BOOT_TASK] + msr sp_el0, x2 mov x29, #0 b secondary_start_kernel ENDPROC(__secondary_switched) diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index d55a7b09959b..4b10dc11e910 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -28,6 +28,7 @@ #include <asm/cacheflush.h> #include <asm/cputype.h> #include <asm/irqflags.h> +#include <asm/kexec.h> #include <asm/memory.h> #include <asm/mmu_context.h> #include <asm/pgalloc.h> @@ -105,7 +106,8 @@ int pfn_is_nosave(unsigned long pfn) unsigned long nosave_begin_pfn = virt_to_pfn(&__nosave_begin); unsigned long nosave_end_pfn = virt_to_pfn(&__nosave_end - 1); - return (pfn >= nosave_begin_pfn) && (pfn <= nosave_end_pfn); + return ((pfn >= nosave_begin_pfn) && (pfn <= nosave_end_pfn)) || + crash_is_nosave(pfn); } void notrace save_processor_state(void) @@ -289,6 +291,9 @@ int swsusp_arch_suspend(void) local_dbg_save(flags); if (__cpu_suspend_enter(&state)) { + /* make the crash dump kernel image visible/saveable */ + crash_prepare_suspend(); + sleep_cpu = smp_processor_id(); ret = swsusp_save(); } else { @@ -300,6 +305,9 @@ int swsusp_arch_suspend(void) if (el2_reset_needed()) dcache_clean_range(__hyp_idmap_text_start, __hyp_idmap_text_end); + /* make the crash dump kernel image protected again */ + crash_post_resume(); + /* * Tell the hibernation core that we've just restored * the memory diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index bc96c8a7fc79..481f54a866c5 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -9,12 +9,19 @@ * published by the Free Software Foundation. */ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/kernel.h> #include <linux/kexec.h> +#include <linux/page-flags.h> #include <linux/smp.h> #include <asm/cacheflush.h> #include <asm/cpu_ops.h> +#include <asm/memory.h> +#include <asm/mmu.h> #include <asm/mmu_context.h> +#include <asm/page.h> #include "cpu-reset.h" @@ -22,8 +29,6 @@ extern const unsigned char arm64_relocate_new_kernel[]; extern const unsigned long arm64_relocate_new_kernel_size; -static unsigned long kimage_start; - /** * kexec_image_info - For debugging output. */ @@ -64,8 +69,6 @@ void machine_kexec_cleanup(struct kimage *kimage) */ int machine_kexec_prepare(struct kimage *kimage) { - kimage_start = kimage->start; - kexec_image_info(kimage); if (kimage->type != KEXEC_TYPE_CRASH && cpus_are_stuck_in_kernel()) { @@ -144,11 +147,15 @@ void machine_kexec(struct kimage *kimage) { phys_addr_t reboot_code_buffer_phys; void *reboot_code_buffer; + bool in_kexec_crash = (kimage == kexec_crash_image); + bool stuck_cpus = cpus_are_stuck_in_kernel(); /* * New cpus may have become stuck_in_kernel after we loaded the image. */ - BUG_ON(cpus_are_stuck_in_kernel() || (num_online_cpus() > 1)); + BUG_ON(!in_kexec_crash && (stuck_cpus || (num_online_cpus() > 1))); + WARN(in_kexec_crash && (stuck_cpus || smp_crash_stop_failed()), + "Some CPUs may be stale, kdump will be unreliable.\n"); reboot_code_buffer_phys = page_to_phys(kimage->control_code_page); reboot_code_buffer = phys_to_virt(reboot_code_buffer_phys); @@ -183,7 +190,7 @@ void machine_kexec(struct kimage *kimage) kexec_list_flush(kimage); /* Flush the new image if already in place. */ - if (kimage->head & IND_DONE) + if ((kimage != kexec_crash_image) && (kimage->head & IND_DONE)) kexec_segment_flush(kimage); pr_info("Bye!\n"); @@ -200,13 +207,158 @@ void machine_kexec(struct kimage *kimage) * relocation is complete. */ - cpu_soft_restart(1, reboot_code_buffer_phys, kimage->head, - kimage_start, 0); + cpu_soft_restart(kimage != kexec_crash_image, + reboot_code_buffer_phys, kimage->head, kimage->start, 0); BUG(); /* Should never get here. */ } +static void machine_kexec_mask_interrupts(void) +{ + unsigned int i; + struct irq_desc *desc; + + for_each_irq_desc(i, desc) { + struct irq_chip *chip; + int ret; + + chip = irq_desc_get_chip(desc); + if (!chip) + continue; + + /* + * First try to remove the active state. If this + * fails, try to EOI the interrupt. + */ + ret = irq_set_irqchip_state(i, IRQCHIP_STATE_ACTIVE, false); + + if (ret && irqd_irq_inprogress(&desc->irq_data) && + chip->irq_eoi) + chip->irq_eoi(&desc->irq_data); + + if (chip->irq_mask) + chip->irq_mask(&desc->irq_data); + + if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data)) + chip->irq_disable(&desc->irq_data); + } +} + +/** + * machine_crash_shutdown - shutdown non-crashing cpus and save registers + */ void machine_crash_shutdown(struct pt_regs *regs) { - /* Empty routine needed to avoid build errors. */ + local_irq_disable(); + + /* shutdown non-crashing cpus */ + smp_send_crash_stop(); + + /* for crashing cpu */ + crash_save_cpu(regs, smp_processor_id()); + machine_kexec_mask_interrupts(); + + pr_info("Starting crashdump kernel...\n"); +} + +void arch_kexec_protect_crashkres(void) +{ + int i; + + kexec_segment_flush(kexec_crash_image); + + for (i = 0; i < kexec_crash_image->nr_segments; i++) + set_memory_valid( + __phys_to_virt(kexec_crash_image->segment[i].mem), + kexec_crash_image->segment[i].memsz >> PAGE_SHIFT, 0); +} + +void arch_kexec_unprotect_crashkres(void) +{ + int i; + + for (i = 0; i < kexec_crash_image->nr_segments; i++) + set_memory_valid( + __phys_to_virt(kexec_crash_image->segment[i].mem), + kexec_crash_image->segment[i].memsz >> PAGE_SHIFT, 1); +} + +#ifdef CONFIG_HIBERNATION +/* + * To preserve the crash dump kernel image, the relevant memory segments + * should be mapped again around the hibernation. + */ +void crash_prepare_suspend(void) +{ + if (kexec_crash_image) + arch_kexec_unprotect_crashkres(); +} + +void crash_post_resume(void) +{ + if (kexec_crash_image) + arch_kexec_protect_crashkres(); +} + +/* + * crash_is_nosave + * + * Return true only if a page is part of reserved memory for crash dump kernel, + * but does not hold any data of loaded kernel image. + * + * Note that all the pages in crash dump kernel memory have been initially + * marked as Reserved in kexec_reserve_crashkres_pages(). + * + * In hibernation, the pages which are Reserved and yet "nosave" are excluded + * from the hibernation iamge. crash_is_nosave() does thich check for crash + * dump kernel and will reduce the total size of hibernation image. + */ + +bool crash_is_nosave(unsigned long pfn) +{ + int i; + phys_addr_t addr; + + if (!crashk_res.end) + return false; + + /* in reserved memory? */ + addr = __pfn_to_phys(pfn); + if ((addr < crashk_res.start) || (crashk_res.end < addr)) + return false; + + if (!kexec_crash_image) + return true; + + /* not part of loaded kernel image? */ + for (i = 0; i < kexec_crash_image->nr_segments; i++) + if (addr >= kexec_crash_image->segment[i].mem && + addr < (kexec_crash_image->segment[i].mem + + kexec_crash_image->segment[i].memsz)) + return false; + + return true; +} + +void crash_free_reserved_phys_range(unsigned long begin, unsigned long end) +{ + unsigned long addr; + struct page *page; + + for (addr = begin; addr < end; addr += PAGE_SIZE) { + page = phys_to_page(addr); + ClearPageReserved(page); + free_reserved_page(page); + } +} +#endif /* CONFIG_HIBERNATION */ + +void arch_crash_save_vmcoreinfo(void) +{ + VMCOREINFO_NUMBER(VA_BITS); + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); + vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", + PHYS_OFFSET); } diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 0972ce58316d..ede56a74bf9f 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -45,6 +45,7 @@ #include <linux/personality.h> #include <linux/notifier.h> #include <trace/events/power.h> +#include <linux/percpu.h> #include <asm/alternative.h> #include <asm/compat.h> @@ -331,6 +332,20 @@ void uao_thread_switch(struct task_struct *next) } /* + * We store our current task in sp_el0, which is clobbered by userspace. Keep a + * shadow copy so that we can restore this upon entry from userspace. + * + * This is *only* for exception entry from EL0, and is not valid until we + * __switch_to() a user task. + */ +DEFINE_PER_CPU(struct task_struct *, __entry_task); + +static void entry_task_switch(struct task_struct *next) +{ + __this_cpu_write(__entry_task, next); +} + +/* * Thread switching. */ struct task_struct *__switch_to(struct task_struct *prev, @@ -342,6 +357,7 @@ struct task_struct *__switch_to(struct task_struct *prev, tls_thread_switch(next); hw_breakpoint_thread_switch(next); contextidr_thread_switch(next); + entry_task_switch(next); uao_thread_switch(next); /* @@ -359,27 +375,35 @@ struct task_struct *__switch_to(struct task_struct *prev, unsigned long get_wchan(struct task_struct *p) { struct stackframe frame; - unsigned long stack_page; + unsigned long stack_page, ret = 0; int count = 0; if (!p || p == current || p->state == TASK_RUNNING) return 0; + stack_page = (unsigned long)try_get_task_stack(p); + if (!stack_page) + return 0; + frame.fp = thread_saved_fp(p); frame.sp = thread_saved_sp(p); frame.pc = thread_saved_pc(p); #ifdef CONFIG_FUNCTION_GRAPH_TRACER frame.graph = p->curr_ret_stack; #endif - stack_page = (unsigned long)task_stack_page(p); do { if (frame.sp < stack_page || frame.sp >= stack_page + THREAD_SIZE || unwind_frame(p, &frame)) - return 0; - if (!in_sched_functions(frame.pc)) - return frame.pc; + goto out; + if (!in_sched_functions(frame.pc)) { + ret = frame.pc; + goto out; + } } while (count ++ < 16); - return 0; + +out: + put_task_stack(p); + return ret; } unsigned long arch_align_stack(unsigned long sp) diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c index 1718706fde83..12a87f2600f2 100644 --- a/arch/arm64/kernel/return_address.c +++ b/arch/arm64/kernel/return_address.c @@ -12,6 +12,7 @@ #include <linux/export.h> #include <linux/ftrace.h> +#include <asm/stack_pointer.h> #include <asm/stacktrace.h> struct return_address_data { diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index f534f492a268..e4e2a5af81c4 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -31,7 +31,6 @@ #include <linux/screen_info.h> #include <linux/init.h> #include <linux/kexec.h> -#include <linux/crash_dump.h> #include <linux/root_dev.h> #include <linux/cpu.h> #include <linux/interrupt.h> @@ -224,6 +223,12 @@ static void __init request_standard_resources(void) if (kernel_data.start >= res->start && kernel_data.end <= res->end) request_resource(res, &kernel_data); +#ifdef CONFIG_KEXEC_CORE + /* Userspace will find "Crash kernel" region in /proc/iomem. */ + if (crashk_res.end && crashk_res.start >= res->start && + crashk_res.end <= res->end) + request_resource(res, &crashk_res); +#endif } } @@ -291,6 +296,15 @@ void __init setup_arch(char **cmdline_p) smp_init_cpus(); smp_build_mpidr_hash(); +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + /* + * Make sure init_thread_info.ttbr0 always generates translation + * faults in case uaccess_enable() is inadvertently called by the init + * thread. + */ + init_task.thread_info.ttbr0 = virt_to_phys(empty_zero_page); +#endif + #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) conswitchp = &vga_con; diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S index 0030d6964e65..5a4fbcc744d2 100644 --- a/arch/arm64/kernel/sleep.S +++ b/arch/arm64/kernel/sleep.S @@ -125,9 +125,6 @@ ENTRY(_cpu_resume) /* load sp from context */ ldr x2, [x0, #CPU_CTX_SP] mov sp, x2 - /* save thread_info */ - and x2, x2, #~(THREAD_SIZE - 1) - msr sp_el0, x2 /* * cpu_do_resume expects x0 to contain context address pointer */ diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index a70f7d3361c4..d1e6b51e1118 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -37,6 +37,7 @@ #include <linux/completion.h> #include <linux/of.h> #include <linux/irq_work.h> +#include <linux/kexec.h> #include <asm/alternative.h> #include <asm/atomic.h> @@ -58,6 +59,9 @@ #define CREATE_TRACE_POINTS #include <trace/events/ipi.h> +DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number); +EXPORT_PER_CPU_SYMBOL(cpu_number); + /* * as from 2.5, kernels no longer have an init_tasks structure * so we need some other way of telling a new secondary core @@ -71,6 +75,7 @@ enum ipi_msg_type { IPI_RESCHEDULE, IPI_CALL_FUNC, IPI_CPU_STOP, + IPI_CPU_CRASH_STOP, IPI_TIMER, IPI_IRQ_WORK, IPI_WAKEUP @@ -146,6 +151,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) * We need to tell the secondary core where to find its stack and the * page tables. */ + secondary_data.task = idle; secondary_data.stack = task_stack_page(idle) + THREAD_START_SP; update_cpu_boot_status(CPU_MMU_OFF); __flush_dcache_area(&secondary_data, sizeof(secondary_data)); @@ -170,6 +176,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) pr_err("CPU%u: failed to boot: %d\n", cpu, ret); } + secondary_data.task = NULL; secondary_data.stack = NULL; status = READ_ONCE(secondary_data.status); if (ret && status) { @@ -208,7 +215,10 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) asmlinkage void secondary_start_kernel(void) { struct mm_struct *mm = &init_mm; - unsigned int cpu = smp_processor_id(); + unsigned int cpu; + + cpu = task_cpu(current); + set_my_cpu_offset(per_cpu_offset(cpu)); /* * All kernel threads share the same mm context; grab a @@ -217,8 +227,6 @@ asmlinkage void secondary_start_kernel(void) atomic_inc(&mm->mm_count); current->active_mm = mm; - set_my_cpu_offset(per_cpu_offset(smp_processor_id())); - /* * TTBR0 is only used for the identity mapping at this stage. Make it * point to zero page to avoid speculatively fetching new entries. @@ -718,6 +726,8 @@ void __init smp_prepare_cpus(unsigned int max_cpus) */ for_each_possible_cpu(cpu) { + per_cpu(cpu_number, cpu) = cpu; + if (cpu == smp_processor_id()) continue; @@ -745,6 +755,7 @@ static const char *ipi_types[NR_IPI] __tracepoint_string = { S(IPI_RESCHEDULE, "Rescheduling interrupts"), S(IPI_CALL_FUNC, "Function call interrupts"), S(IPI_CPU_STOP, "CPU stop interrupts"), + S(IPI_CPU_CRASH_STOP, "CPU stop (for crash dump) interrupts"), S(IPI_TIMER, "Timer broadcast interrupts"), S(IPI_IRQ_WORK, "IRQ work interrupts"), S(IPI_WAKEUP, "CPU wake-up interrupts"), @@ -819,6 +830,29 @@ static void ipi_cpu_stop(unsigned int cpu) cpu_relax(); } +#ifdef CONFIG_KEXEC_CORE +static atomic_t waiting_for_crash_ipi = ATOMIC_INIT(0); +#endif + +static void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs) +{ +#ifdef CONFIG_KEXEC_CORE + crash_save_cpu(regs, cpu); + + atomic_dec(&waiting_for_crash_ipi); + + local_irq_disable(); + +#ifdef CONFIG_HOTPLUG_CPU + if (cpu_ops[cpu]->cpu_die) + cpu_ops[cpu]->cpu_die(cpu); +#endif + + /* just in case */ + cpu_park_loop(); +#endif +} + /* * Main handler for inter-processor interrupts */ @@ -849,6 +883,15 @@ void handle_IPI(int ipinr, struct pt_regs *regs) irq_exit(); break; + case IPI_CPU_CRASH_STOP: + if (IS_ENABLED(CONFIG_KEXEC_CORE)) { + irq_enter(); + ipi_cpu_crash_stop(cpu, regs); + + unreachable(); + } + break; + #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST case IPI_TIMER: irq_enter(); @@ -921,6 +964,39 @@ void smp_send_stop(void) cpumask_pr_args(cpu_online_mask)); } +#ifdef CONFIG_KEXEC_CORE +void smp_send_crash_stop(void) +{ + cpumask_t mask; + unsigned long timeout; + + if (num_online_cpus() == 1) + return; + + cpumask_copy(&mask, cpu_online_mask); + cpumask_clear_cpu(smp_processor_id(), &mask); + + atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1); + + pr_crit("SMP: stopping secondary CPUs\n"); + smp_cross_call(&mask, IPI_CPU_CRASH_STOP); + + /* Wait up to one second for other CPUs to stop */ + timeout = USEC_PER_SEC; + while ((atomic_read(&waiting_for_crash_ipi) > 0) && timeout--) + udelay(1); + + if (atomic_read(&waiting_for_crash_ipi) > 0) + pr_warning("SMP: failed to stop secondary CPUs %*pbl\n", + cpumask_pr_args(&mask)); +} + +bool smp_crash_stop_failed(void) +{ + return (atomic_read(&waiting_for_crash_ipi) > 0); +} +#endif + /* * not supported here */ diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 0cc01e0d38eb..5201bebcec07 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -22,6 +22,7 @@ #include <linux/stacktrace.h> #include <asm/irq.h> +#include <asm/stack_pointer.h> #include <asm/stacktrace.h> /* @@ -133,7 +134,6 @@ void notrace walk_stackframe(struct task_struct *tsk, struct stackframe *frame, break; } } -EXPORT_SYMBOL(walk_stackframe); #ifdef CONFIG_STACKTRACE struct stack_trace_data { @@ -186,6 +186,9 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) struct stack_trace_data data; struct stackframe frame; + if (!try_get_task_stack(tsk)) + return; + data.trace = trace; data.skip = trace->skip; @@ -207,6 +210,8 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) walk_stackframe(tsk, &frame, save_trace, &data); if (trace->nr_entries < trace->max_entries) trace->entries[trace->nr_entries++] = ULONG_MAX; + + put_task_stack(tsk); } void save_stack_trace(struct stack_trace *trace) diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index bb0cd787a9d3..1e3be9064cfa 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -47,12 +47,6 @@ void notrace __cpu_suspend_exit(void) cpu_uninstall_idmap(); /* - * Restore per-cpu offset before any kernel - * subsystem relying on it has a chance to run. - */ - set_my_cpu_offset(per_cpu_offset(cpu)); - - /* * PSTATE was not saved over suspend/resume, re-enable any detected * features that might not have been set correctly. */ diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 5963be2e05f0..2783ff837a24 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -38,6 +38,7 @@ #include <asm/esr.h> #include <asm/insn.h> #include <asm/traps.h> +#include <asm/stack_pointer.h> #include <asm/stacktrace.h> #include <asm/exception.h> #include <asm/system_misc.h> @@ -147,6 +148,9 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) if (!tsk) tsk = current; + if (!try_get_task_stack(tsk)) + return; + /* * Switching between stacks is valid when tracing current and in * non-preemptible context. @@ -212,6 +216,8 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) stack + sizeof(struct pt_regs)); } } + + put_task_stack(tsk); } void show_stack(struct task_struct *tsk, unsigned long *sp) @@ -227,10 +233,9 @@ void show_stack(struct task_struct *tsk, unsigned long *sp) #endif #define S_SMP " SMP" -static int __die(const char *str, int err, struct thread_info *thread, - struct pt_regs *regs) +static int __die(const char *str, int err, struct pt_regs *regs) { - struct task_struct *tsk = thread->task; + struct task_struct *tsk = current; static int die_counter; int ret; @@ -245,7 +250,8 @@ static int __die(const char *str, int err, struct thread_info *thread, print_modules(); __show_regs(regs); pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n", - TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), thread + 1); + TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), + end_of_stack(tsk)); if (!user_mode(regs)) { dump_mem(KERN_EMERG, "Stack: ", regs->sp, @@ -264,7 +270,6 @@ static DEFINE_RAW_SPINLOCK(die_lock); */ void die(const char *str, struct pt_regs *regs, int err) { - struct thread_info *thread = current_thread_info(); int ret; oops_enter(); @@ -272,9 +277,9 @@ void die(const char *str, struct pt_regs *regs, int err) raw_spin_lock_irq(&die_lock); console_verbose(); bust_spinlocks(1); - ret = __die(str, err, thread, regs); + ret = __die(str, err, regs); - if (regs && kexec_should_crash(thread->task)) + if (regs && kexec_should_crash(current)) crash_kexec(regs); bust_spinlocks(0); @@ -435,9 +440,10 @@ int cpu_enable_cache_maint_trap(void *__unused) } #define __user_cache_maint(insn, address, res) \ - if (address >= user_addr_max()) \ + if (address >= user_addr_max()) { \ res = -EFAULT; \ - else \ + } else { \ + uaccess_ttbr0_enable(); \ asm volatile ( \ "1: " insn ", %1\n" \ " mov %w0, #0\n" \ @@ -449,7 +455,9 @@ int cpu_enable_cache_maint_trap(void *__unused) " .popsection\n" \ _ASM_EXTABLE(1b, 3b) \ : "=r" (res) \ - : "r" (address), "i" (-EFAULT) ) + : "r" (address), "i" (-EFAULT)); \ + uaccess_ttbr0_disable(); \ + } static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs) { diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 6a584558b29d..34d3ed64fe8e 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -228,6 +228,11 @@ SECTIONS swapper_pg_dir = .; . += SWAPPER_DIR_SIZE; +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + reserved_ttbr0 = .; + . += RESERVED_TTBR0_SIZE; +#endif + #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 tramp_pg_dir = .; . += PAGE_SIZE; diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S index efbf610eaf4e..72aa167cdaf2 100644 --- a/arch/arm64/lib/clear_user.S +++ b/arch/arm64/lib/clear_user.S @@ -17,10 +17,7 @@ */ #include <linux/linkage.h> -#include <asm/alternative.h> -#include <asm/assembler.h> -#include <asm/cpufeature.h> -#include <asm/sysreg.h> +#include <asm/uaccess.h> .text @@ -33,8 +30,7 @@ * Alignment fixed up by hardware. */ ENTRY(__arch_clear_user) -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_enable_not_uao x2, x3 mov x2, x1 // save the size for fixup return subs x1, x1, #8 b.mi 2f @@ -54,8 +50,7 @@ uao_user_alternative 9f, strh, sttrh, wzr, x0, 2 b.mi 5f uao_user_alternative 9f, strb, sttrb, wzr, x0, 0 5: mov x0, #0 -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_disable_not_uao x2 ret ENDPROC(__arch_clear_user) diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S index 4fd67ea03bb0..cfe13396085b 100644 --- a/arch/arm64/lib/copy_from_user.S +++ b/arch/arm64/lib/copy_from_user.S @@ -16,11 +16,8 @@ #include <linux/linkage.h> -#include <asm/alternative.h> -#include <asm/assembler.h> #include <asm/cache.h> -#include <asm/cpufeature.h> -#include <asm/sysreg.h> +#include <asm/uaccess.h> /* * Copy from user space to a kernel buffer (alignment handled by the hardware) @@ -67,12 +64,10 @@ end .req x5 ENTRY(__arch_copy_from_user) -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_enable_not_uao x3, x4 add end, x0, x2 #include "copy_template.S" -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_disable_not_uao x3 mov x0, #0 // Nothing to copy ret ENDPROC(__arch_copy_from_user) diff --git a/arch/arm64/lib/copy_in_user.S b/arch/arm64/lib/copy_in_user.S index 841bf8f7fab7..984570b0bd20 100644 --- a/arch/arm64/lib/copy_in_user.S +++ b/arch/arm64/lib/copy_in_user.S @@ -18,11 +18,8 @@ #include <linux/linkage.h> -#include <asm/alternative.h> -#include <asm/assembler.h> #include <asm/cache.h> -#include <asm/cpufeature.h> -#include <asm/sysreg.h> +#include <asm/uaccess.h> /* * Copy from user space to user space (alignment handled by the hardware) @@ -68,12 +65,10 @@ end .req x5 ENTRY(__arch_copy_in_user) -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_enable_not_uao x3, x4 add end, x0, x2 #include "copy_template.S" -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_disable_not_uao x3 mov x0, #0 ret ENDPROC(__arch_copy_in_user) diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S index 7a7efe255034..e99e31c9acac 100644 --- a/arch/arm64/lib/copy_to_user.S +++ b/arch/arm64/lib/copy_to_user.S @@ -16,11 +16,8 @@ #include <linux/linkage.h> -#include <asm/alternative.h> -#include <asm/assembler.h> #include <asm/cache.h> -#include <asm/cpufeature.h> -#include <asm/sysreg.h> +#include <asm/uaccess.h> /* * Copy to user space from a kernel buffer (alignment handled by the hardware) @@ -66,12 +63,10 @@ end .req x5 ENTRY(__arch_copy_to_user) -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_enable_not_uao x3, x4 add end, x0, x2 #include "copy_template.S" -ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \ - CONFIG_ARM64_PAN) + uaccess_disable_not_uao x3 mov x0, #0 ret ENDPROC(__arch_copy_to_user) diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S index 58b5a906ff78..da9576932322 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -23,6 +23,7 @@ #include <asm/assembler.h> #include <asm/cpufeature.h> #include <asm/alternative.h> +#include <asm/uaccess.h> /* * flush_icache_range(start,end) @@ -48,6 +49,7 @@ ENTRY(flush_icache_range) * - end - virtual end address of region */ ENTRY(__flush_cache_user_range) + uaccess_ttbr0_enable x2, x3 dcache_line_size x2, x3 sub x3, x2, #1 bic x4, x0, x3 @@ -69,10 +71,12 @@ USER(9f, ic ivau, x4 ) // invalidate I line PoU dsb ish isb mov x0, #0 +1: + uaccess_ttbr0_disable x1 ret 9: mov x0, #-EFAULT - ret + b 1b ENDPROC(flush_icache_range) ENDPROC(__flush_cache_user_range) diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c index 62d976e843fc..c841ccecbc4d 100644 --- a/arch/arm64/mm/context.c +++ b/arch/arm64/mm/context.c @@ -233,7 +233,12 @@ switch_mm_fastpath: arm64_apply_bp_hardening(); - cpu_switch_mm(mm->pgd, mm); + /* + * Defer TTBR0_EL1 setting for user threads to uaccess_enable() when + * emulating PAN. + */ + if (!system_uses_ttbr0_pan()) + cpu_switch_mm(mm->pgd, mm); } /* Errata workaround post TTBRx_EL1 update. */ diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index ad49ae8f3967..e4e7b1991985 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -286,13 +286,19 @@ out: return fault; } -static inline bool is_permission_fault(unsigned int esr) +static inline bool is_permission_fault(unsigned int esr, struct pt_regs *regs) { unsigned int ec = ESR_ELx_EC(esr); unsigned int fsc_type = esr & ESR_ELx_FSC_TYPE; - return (ec == ESR_ELx_EC_DABT_CUR && fsc_type == ESR_ELx_FSC_PERM) || - (ec == ESR_ELx_EC_IABT_CUR && fsc_type == ESR_ELx_FSC_PERM); + if (ec != ESR_ELx_EC_DABT_CUR && ec != ESR_ELx_EC_IABT_CUR) + return false; + + if (system_uses_ttbr0_pan()) + return fsc_type == ESR_ELx_FSC_FAULT && + (regs->pstate & PSR_PAN_BIT); + else + return fsc_type == ESR_ELx_FSC_PERM; } static bool is_el0_instruction_abort(unsigned int esr) @@ -332,7 +338,7 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, mm_flags |= FAULT_FLAG_WRITE; } - if (is_permission_fault(esr) && (addr < TASK_SIZE)) { + if (addr < TASK_SIZE && is_permission_fault(esr, regs)) { /* regs->orig_addr_limit may be 0 if we entered from EL0 */ if (regs->orig_addr_limit == KERNEL_DS) die("Accessing user space memory with fs=KERNEL_DS", regs, esr); @@ -522,10 +528,10 @@ static const struct fault_info fault_info[] = { { do_bad, SIGBUS, 0, "unknown 17" }, { do_bad, SIGBUS, 0, "unknown 18" }, { do_bad, SIGBUS, 0, "unknown 19" }, - { do_bad, SIGBUS, 0, "synchronous abort (translation table walk)" }, - { do_bad, SIGBUS, 0, "synchronous abort (translation table walk)" }, - { do_bad, SIGBUS, 0, "synchronous abort (translation table walk)" }, - { do_bad, SIGBUS, 0, "synchronous abort (translation table walk)" }, + { do_bad, SIGBUS, 0, "synchronous external abort (translation table walk)" }, + { do_bad, SIGBUS, 0, "synchronous external abort (translation table walk)" }, + { do_bad, SIGBUS, 0, "synchronous external abort (translation table walk)" }, + { do_bad, SIGBUS, 0, "synchronous external abort (translation table walk)" }, { do_bad, SIGBUS, 0, "synchronous parity error" }, { do_bad, SIGBUS, 0, "unknown 25" }, { do_bad, SIGBUS, 0, "unknown 26" }, diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 9b8b477c363d..63bc374d99a2 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -30,12 +30,15 @@ #include <linux/gfp.h> #include <linux/memblock.h> #include <linux/sort.h> +#include <linux/of.h> #include <linux/of_fdt.h> #include <linux/dma-mapping.h> #include <linux/dma-contiguous.h> #include <linux/efi.h> #include <linux/swiotlb.h> #include <linux/vmalloc.h> +#include <linux/kexec.h> +#include <linux/crash_dump.h> #include <asm/boot.h> #include <asm/fixmap.h> @@ -76,6 +79,142 @@ static int __init early_initrd(char *p) early_param("initrd", early_initrd); #endif +#ifdef CONFIG_KEXEC_CORE +/* + * reserve_crashkernel() - reserves memory for crash kernel + * + * This function reserves memory area given in "crashkernel=" kernel command + * line parameter. The memory reserved is used by dump capture kernel when + * primary kernel is crashing. + */ +static void __init reserve_crashkernel(void) +{ + unsigned long long crash_base, crash_size; + int ret; + + ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), + &crash_size, &crash_base); + /* no crashkernel= or invalid value specified */ + if (ret || !crash_size) + return; + + crash_size = PAGE_ALIGN(crash_size); + + if (crash_base == 0) { + /* Current arm64 boot protocol requires 2MB alignment */ + crash_base = memblock_find_in_range(0, ARCH_LOW_ADDRESS_LIMIT, + crash_size, SZ_2M); + if (crash_base == 0) { + pr_warn("cannot allocate crashkernel (size:0x%llx)\n", + crash_size); + return; + } + } else { + /* User specifies base address explicitly. */ + if (!memblock_is_region_memory(crash_base, crash_size)) { + pr_warn("cannot reserve crashkernel: region is not memory\n"); + return; + } + + if (memblock_is_region_reserved(crash_base, crash_size)) { + pr_warn("cannot reserve crashkernel: region overlaps reserved memory\n"); + return; + } + + if (!IS_ALIGNED(crash_base, SZ_2M)) { + pr_warn("cannot reserve crashkernel: base address is not 2MB aligned\n"); + return; + } + } + memblock_reserve(crash_base, crash_size); + + pr_info("crashkernel reserved: 0x%016llx - 0x%016llx (%lld MB)\n", + crash_base, crash_base + crash_size, crash_size >> 20); + + crashk_res.start = crash_base; + crashk_res.end = crash_base + crash_size - 1; +} + +static void __init kexec_reserve_crashkres_pages(void) +{ +#ifdef CONFIG_HIBERNATION + phys_addr_t addr; + struct page *page; + + if (!crashk_res.end) + return; + + /* + * To reduce the size of hibernation image, all the pages are + * marked as Reserved initially. + */ + for (addr = crashk_res.start; addr < (crashk_res.end + 1); + addr += PAGE_SIZE) { + page = phys_to_page(addr); + SetPageReserved(page); + } +#endif +} +#else +static void __init reserve_crashkernel(void) +{ +} + +static void __init kexec_reserve_crashkres_pages(void) +{ +} +#endif /* CONFIG_KEXEC_CORE */ + +#ifdef CONFIG_CRASH_DUMP +static int __init early_init_dt_scan_elfcorehdr(unsigned long node, + const char *uname, int depth, void *data) +{ + const __be32 *reg; + int len; + + if (depth != 1 || strcmp(uname, "chosen") != 0) + return 0; + + reg = of_get_flat_dt_prop(node, "linux,elfcorehdr", &len); + if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells))) + return 1; + + elfcorehdr_addr = dt_mem_next_cell(dt_root_addr_cells, ®); + elfcorehdr_size = dt_mem_next_cell(dt_root_size_cells, ®); + + return 1; +} + +/* + * reserve_elfcorehdr() - reserves memory for elf core header + * + * This function reserves the memory occupied by an elf core header + * described in the device tree. This region contains all the + * information about primary kernel's core image and is used by a dump + * capture kernel to access the system memory on primary kernel. + */ +static void __init reserve_elfcorehdr(void) +{ + of_scan_flat_dt(early_init_dt_scan_elfcorehdr, NULL); + + if (!elfcorehdr_size) + return; + + if (memblock_is_region_reserved(elfcorehdr_addr, elfcorehdr_size)) { + pr_warn("elfcorehdr is overlapped\n"); + return; + } + + memblock_reserve(elfcorehdr_addr, elfcorehdr_size); + + pr_info("Reserving %lldKB of memory at 0x%llx for elfcorehdr\n", + elfcorehdr_size >> 10, elfcorehdr_addr); +} +#else +static void __init reserve_elfcorehdr(void) +{ +} +#endif /* CONFIG_CRASH_DUMP */ /* * Return the maximum physical address for ZONE_DMA (DMA_BIT_MASK(32)). It * currently assumes that for memory starting above 4G, 32-bit devices will @@ -187,10 +326,45 @@ static int __init early_mem(char *p) } early_param("mem", early_mem); +static int __init early_init_dt_scan_usablemem(unsigned long node, + const char *uname, int depth, void *data) +{ + struct memblock_region *usablemem = data; + const __be32 *reg; + int len; + + if (depth != 1 || strcmp(uname, "chosen") != 0) + return 0; + + reg = of_get_flat_dt_prop(node, "linux,usable-memory-range", &len); + if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells))) + return 1; + + usablemem->base = dt_mem_next_cell(dt_root_addr_cells, ®); + usablemem->size = dt_mem_next_cell(dt_root_size_cells, ®); + + return 1; +} + +static void __init fdt_enforce_memory_region(void) +{ + struct memblock_region reg = { + .size = 0, + }; + + of_scan_flat_dt(early_init_dt_scan_usablemem, ®); + + if (reg.size) + memblock_cap_memory_range(reg.base, reg.size); +} + void __init arm64_memblock_init(void) { const s64 linear_region_size = -(s64)PAGE_OFFSET; + /* Handle linux,usable-memory-range property */ + fdt_enforce_memory_region(); + /* * Ensure that the linear region takes up exactly half of the kernel * virtual address space. This way, we can distinguish a linear address @@ -296,6 +470,11 @@ void __init arm64_memblock_init(void) arm64_dma_phys_limit = max_zone_dma_phys(); else arm64_dma_phys_limit = PHYS_MASK + 1; + + reserve_crashkernel(); + + reserve_elfcorehdr(); + high_memory = __va(memblock_end_of_DRAM() - 1) + 1; dma_contiguous_reserve(arm64_dma_phys_limit); @@ -415,6 +594,8 @@ void __init mem_init(void) /* this will put all unused low memory onto the freelists */ free_all_bootmem(); + kexec_reserve_crashkres_pages(); + mem_init_print_info(NULL); #define MLK(b, t) b, t, ((t) - (b)) >> 10 diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 4cd4862845cd..5b1184c369d5 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -22,6 +22,8 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> +#include <linux/ioport.h> +#include <linux/kexec.h> #include <linux/libfdt.h> #include <linux/mman.h> #include <linux/nodemask.h> @@ -317,56 +319,32 @@ static void create_mapping_late(phys_addr_t phys, unsigned long virt, NULL, !debug_pagealloc_enabled()); } -static void __init __map_memblock(pgd_t *pgd, phys_addr_t start, phys_addr_t end) +static void __init __map_memblock(pgd_t *pgd, phys_addr_t start, + phys_addr_t end, pgprot_t prot, + bool allow_block_mappings) +{ + __create_pgd_mapping(pgd, start, __phys_to_virt(start), end - start, + prot, early_pgtable_alloc, allow_block_mappings); +} + +static void __init map_mem(pgd_t *pgd) { unsigned long kernel_start = __pa(_text); unsigned long kernel_end = __pa(__init_begin); + struct memblock_region *reg; /* * Take care not to create a writable alias for the * read-only text and rodata sections of the kernel image. + * So temporarily mark them as NOMAP to skip mappings in + * the following for-loop */ - - /* No overlap with the kernel text/rodata */ - if (end < kernel_start || start >= kernel_end) { - __create_pgd_mapping(pgd, start, __phys_to_virt(start), - end - start, PAGE_KERNEL, - early_pgtable_alloc, - !debug_pagealloc_enabled()); - return; - } - - /* - * This block overlaps the kernel text/rodata mappings. - * Map the portion(s) which don't overlap. - */ - if (start < kernel_start) - __create_pgd_mapping(pgd, start, - __phys_to_virt(start), - kernel_start - start, PAGE_KERNEL, - early_pgtable_alloc, - !debug_pagealloc_enabled()); - if (kernel_end < end) - __create_pgd_mapping(pgd, kernel_end, - __phys_to_virt(kernel_end), - end - kernel_end, PAGE_KERNEL, - early_pgtable_alloc, - !debug_pagealloc_enabled()); - - /* - * Map the linear alias of the [_text, __init_begin) interval as - * read-only/non-executable. This makes the contents of the - * region accessible to subsystems such as hibernate, but - * protects it from inadvertent modification or execution. - */ - __create_pgd_mapping(pgd, kernel_start, __phys_to_virt(kernel_start), - kernel_end - kernel_start, PAGE_KERNEL_RO, - early_pgtable_alloc, !debug_pagealloc_enabled()); -} - -static void __init map_mem(pgd_t *pgd) -{ - struct memblock_region *reg; + memblock_mark_nomap(kernel_start, kernel_end - kernel_start); +#ifdef CONFIG_KEXEC_CORE + if (crashk_res.end) + memblock_mark_nomap(crashk_res.start, + resource_size(&crashk_res)); +#endif /* map all the memory banks */ for_each_memblock(memory, reg) { @@ -378,8 +356,33 @@ static void __init map_mem(pgd_t *pgd) if (memblock_is_nomap(reg)) continue; - __map_memblock(pgd, start, end); + __map_memblock(pgd, start, end, + PAGE_KERNEL, !debug_pagealloc_enabled()); } + + /* + * Map the linear alias of the [_text, __init_begin) interval as + * read-only/non-executable. This makes the contents of the + * region accessible to subsystems such as hibernate, but + * protects it from inadvertent modification or execution. + */ + __map_memblock(pgd, kernel_start, kernel_end, + PAGE_KERNEL_RO, !debug_pagealloc_enabled()); + memblock_clear_nomap(kernel_start, kernel_end - kernel_start); + +#ifdef CONFIG_KEXEC_CORE + /* + * Use page-level mappings here so that we can shrink the region + * in page granularity and put back unused memory to buddy system + * through /sys/kernel/kexec_crash_size interface. + */ + if (crashk_res.end) { + __map_memblock(pgd, crashk_res.start, crashk_res.end + 1, + PAGE_KERNEL, false); + memblock_clear_nomap(crashk_res.start, + resource_size(&crashk_res)); + } +#endif } void mark_rodata_ro(void) diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 8def55e7249b..3212ee0558f6 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -125,20 +125,23 @@ int set_memory_x(unsigned long addr, int numpages) } EXPORT_SYMBOL_GPL(set_memory_x); -#ifdef CONFIG_DEBUG_PAGEALLOC -void __kernel_map_pages(struct page *page, int numpages, int enable) +int set_memory_valid(unsigned long addr, int numpages, int enable) { - unsigned long addr = (unsigned long) page_address(page); - if (enable) - __change_memory_common(addr, PAGE_SIZE * numpages, + return __change_memory_common(addr, PAGE_SIZE * numpages, __pgprot(PTE_VALID), __pgprot(0)); else - __change_memory_common(addr, PAGE_SIZE * numpages, + return __change_memory_common(addr, PAGE_SIZE * numpages, __pgprot(0), __pgprot(PTE_VALID)); } + +#ifdef CONFIG_DEBUG_PAGEALLOC +void __kernel_map_pages(struct page *page, int numpages, int enable) +{ + set_memory_valid((unsigned long)page_address(page), numpages, enable); +} #ifdef CONFIG_HIBERNATION /* * When built with CONFIG_DEBUG_PAGEALLOC and CONFIG_HIBERNATION, this function diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 66cce2138f95..9d37f4e61166 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -70,11 +70,14 @@ ENTRY(cpu_do_suspend) mrs x8, mdscr_el1 mrs x9, oslsr_el1 mrs x10, sctlr_el1 + mrs x11, tpidr_el1 + mrs x12, sp_el0 stp x2, x3, [x0] stp x4, xzr, [x0, #16] stp x5, x6, [x0, #32] stp x7, x8, [x0, #48] stp x9, x10, [x0, #64] + stp x11, x12, [x0, #80] ret ENDPROC(cpu_do_suspend) @@ -90,6 +93,7 @@ ENTRY(cpu_do_resume) ldp x6, x8, [x0, #32] ldp x9, x10, [x0, #48] ldp x11, x12, [x0, #64] + ldp x13, x14, [x0, #80] msr tpidr_el0, x2 msr tpidrro_el0, x3 msr contextidr_el1, x4 @@ -112,6 +116,8 @@ ENTRY(cpu_do_resume) msr mdscr_el1, x10 msr sctlr_el1, x12 + msr tpidr_el1, x13 + msr sp_el0, x14 /* * Restore oslsr_el1 by writing oslar_el1 */ diff --git a/arch/arm64/xen/hypercall.S b/arch/arm64/xen/hypercall.S index 329c8027b0a9..b41aff25426d 100644 --- a/arch/arm64/xen/hypercall.S +++ b/arch/arm64/xen/hypercall.S @@ -49,6 +49,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> +#include <asm/uaccess.h> #include <xen/interface/xen.h> @@ -91,6 +92,20 @@ ENTRY(privcmd_call) mov x2, x3 mov x3, x4 mov x4, x5 + /* + * Privcmd calls are issued by the userspace. The kernel needs to + * enable access to TTBR0_EL1 as the hypervisor would issue stage 1 + * translations to user memory via AT instructions. Since AT + * instructions are not affected by the PAN bit (ARMv8.1), we only + * need the explicit uaccess_enable/disable if the TTBR0 PAN emulation + * is enabled (it implies that hardware UAO and PAN disabled). + */ + uaccess_ttbr0_enable x6, x7 hvc XEN_IMM + + /* + * Disable userspace access from kernel once the hyp call completed. + */ + uaccess_ttbr0_disable x6 ret ENDPROC(privcmd_call); |