kernel: Move to Linux 4.18.3-openpower1

Update to 4.18, and re-generate the defconfig. In addition, make the
following changes:

 - Enable EXPERT, so we can disable some things
 - Disable non-powerpc BPF decoders
 - Disable TASKSTATS
 - Disable unused syscalls
 - Set more things to be modules
 - Turn off unused network vendors

Note that CONFIG_I2C_CHARDEV=y as the module is not loaded
automatically, and without this i2cget etc. will fail.

Buildroot is updated to include support for v4.18.

Signed-off-by: Joel Stanley <joel@jms.id.au>

17 files changed, 110 insertions, 52 deletions

diff --git a/openpower/configs/barreleye_defconfig b/openpower/configs/barreleye_defconfig
index 9c555114..354a54c6 100644
--- a/openpower/configs/barreleye_defconfig
+++ b/openpower/configs/barreleye_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/firenze_defconfig b/openpower/configs/firenze_defconfig
index 5c682ce3..0628affe 100644
--- a/openpower/configs/firenze_defconfig
+++ b/openpower/configs/firenze_defconfig
@@ -13,7 +13,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/firestone_defconfig b/openpower/configs/firestone_defconfig
index baccdd65..72da89fe 100644
--- a/openpower/configs/firestone_defconfig
+++ b/openpower/configs/firestone_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/garrison_defconfig b/openpower/configs/garrison_defconfig
index fae441fa..2e58c5ab 100644
--- a/openpower/configs/garrison_defconfig
+++ b/openpower/configs/garrison_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/habanero_defconfig b/openpower/configs/habanero_defconfig
index c9cb38f6..d7f3e6f8 100644
--- a/openpower/configs/habanero_defconfig
+++ b/openpower/configs/habanero_defconfig
@@ -15,7 +15,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/linux/skiroot_defconfig b/openpower/configs/linux/skiroot_defconfig
index 2c575ec4..2bdc0780 100644
--- a/openpower/configs/linux/skiroot_defconfig
+++ b/openpower/configs/linux/skiroot_defconfig
@@ -3,21 +3,17 @@ CONFIG_ALTIVEC=y
 CONFIG_VSX=y
 CONFIG_NR_CPUS=2048
 CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_KERNEL_XZ=y
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
-CONFIG_TASKSTATS=y
-CONFIG_TASK_DELAY_ACCT=y
-CONFIG_TASK_XACCT=y
-CONFIG_TASK_IO_ACCOUNTING=y
 # CONFIG_CPU_ISOLATION is not set
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=20
-CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_RD_GZIP is not set
 # CONFIG_RD_BZIP2 is not set
@@ -25,6 +21,11 @@ CONFIG_BLK_DEV_INITRD=y
 # CONFIG_RD_LZO is not set
 # CONFIG_RD_LZ4 is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_EXPERT=y
+# CONFIG_SGETMASK_SYSCALL is not set
+# CONFIG_SYSFS_SYSCALL is not set
+# CONFIG_SHMEM is not set
+# CONFIG_AIO is not set
 CONFIG_PERF_EVENTS=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB_FREELIST_HARDENED=y
@@ -78,7 +79,7 @@ CONFIG_BLK_DEV_RAM_SIZE=65536
 CONFIG_VIRTIO_BLK=m
 CONFIG_BLK_DEV_NVME=m
 CONFIG_NVME_MULTIPATH=y
-CONFIG_EEPROM_AT24=y
+CONFIG_EEPROM_AT24=m
 # CONFIG_CXL is not set
 # CONFIG_OCXL is not set
 CONFIG_BLK_DEV_SD=m
@@ -107,7 +108,7 @@ CONFIG_SCSI_VIRTIO=m
 CONFIG_SCSI_DH=y
 CONFIG_SCSI_DH_ALUA=m
 CONFIG_ATA=y
-CONFIG_SATA_AHCI=y
+CONFIG_SATA_AHCI=m
 # CONFIG_ATA_SFF is not set
 CONFIG_MD=y
 CONFIG_BLK_DEV_MD=m
@@ -124,31 +125,72 @@ CONFIG_DM_SNAPSHOT=m
 CONFIG_DM_MIRROR=m
 CONFIG_DM_ZERO=m
 CONFIG_DM_MULTIPATH=m
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_VENDOR_ADAPTEC is not set
+# CONFIG_NET_VENDOR_AGERE is not set
+# CONFIG_NET_VENDOR_ALACRITECH is not set
 CONFIG_ACENIC=m
 CONFIG_ACENIC_OMIT_TIGON_I=y
-CONFIG_TIGON3=y
+# CONFIG_NET_VENDOR_AMAZON is not set
+# CONFIG_NET_VENDOR_AMD is not set
+# CONFIG_NET_VENDOR_AQUANTIA is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ATHEROS is not set
+CONFIG_TIGON3=m
 CONFIG_BNX2X=m
-# CONFIG_CAVIUM_PTP is not set
-CONFIG_CHELSIO_T1=y
+# CONFIG_NET_VENDOR_BROCADE is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_CAVIUM is not set
+CONFIG_CHELSIO_T1=m
+# CONFIG_NET_VENDOR_CISCO is not set
 # CONFIG_NET_VENDOR_CORTINA is not set
+# CONFIG_NET_VENDOR_DEC is not set
+# CONFIG_NET_VENDOR_DLINK is not set
 CONFIG_BE2NET=m
-CONFIG_S2IO=m
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_HP is not set
 # CONFIG_NET_VENDOR_HUAWEI is not set
 CONFIG_E1000=m
 CONFIG_IGB=m
 CONFIG_IXGB=m
 CONFIG_IXGBE=m
 CONFIG_I40E=m
+CONFIG_S2IO=m
+# CONFIG_NET_VENDOR_MARVELL is not set
 CONFIG_MLX4_EN=m
 # CONFIG_MLX4_CORE_GEN2 is not set
 CONFIG_MLX5_CORE=m
-CONFIG_MLX5_CORE_EN=y
-# CONFIG_MLX5_MPFS is not set
+# CONFIG_NET_VENDOR_MICREL is not set
 CONFIG_MYRI10GE=m
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_NI is not set
+# CONFIG_NET_VENDOR_NVIDIA is not set
+# CONFIG_NET_VENDOR_OKI is not set
+# CONFIG_NET_PACKET_ENGINE is not set
 CONFIG_QLGE=m
 CONFIG_NETXEN_NIC=m
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_RDC is not set
+# CONFIG_NET_VENDOR_REALTEK is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
 CONFIG_SFC=m
+# CONFIG_NET_VENDOR_SILAN is not set
+# CONFIG_NET_VENDOR_SIS is not set
+# CONFIG_NET_VENDOR_SMSC is not set
 # CONFIG_NET_VENDOR_SOCIONEXT is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SUN is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+# CONFIG_NET_VENDOR_TEHUTI is not set
+# CONFIG_NET_VENDOR_TI is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_NET_VENDOR_XILINX is not set
+CONFIG_PHYLIB=y
 # CONFIG_USB_NET_DRIVERS is not set
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
@@ -158,18 +200,24 @@ CONFIG_INPUT_MISC=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_IPMI_HANDLER=y
-# CONFIG_IPMI_PROC_INTERFACE is not set
 CONFIG_IPMI_DEVICE_INTERFACE=y
 CONFIG_IPMI_POWERNV=y
 CONFIG_IPMI_WATCHDOG=y
 CONFIG_HW_RANDOM=y
+CONFIG_TCG_TPM=y
 CONFIG_TCG_TIS_I2C_NUVOTON=y
+CONFIG_I2C=y
 # CONFIG_I2C_COMPAT is not set
 CONFIG_I2C_CHARDEV=y
 # CONFIG_I2C_HELPER_AUTO is not set
-CONFIG_DRM=y
-CONFIG_DRM_RADEON=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_OPAL=m
+CONFIG_PPS=y
+CONFIG_SENSORS_IBMPOWERNV=m
+CONFIG_DRM=m
+CONFIG_DRM_RADEON=m
 CONFIG_DRM_AST=m
+CONFIG_FB=y
 CONFIG_FIRMWARE_EDID=y
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_FB_OF=y
@@ -178,23 +226,37 @@ CONFIG_FB_MATROX_MILLENIUM=y
 CONFIG_FB_MATROX_MYSTIQUE=y
 CONFIG_FB_MATROX_G=y
 # CONFIG_LCD_CLASS_DEVICE is not set
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
 # CONFIG_BACKLIGHT_GENERIC is not set
 # CONFIG_VGA_CONSOLE is not set
+CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
 # CONFIG_LOGO_LINUX_MONO is not set
 # CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_HID_GENERIC=m
+CONFIG_HID_A4TECH=y
+CONFIG_HID_BELKIN=y
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CHICONY=y
+CONFIG_HID_CYPRESS=y
+CONFIG_HID_EZKEY=y
+CONFIG_HID_ITE=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_LOGITECH=y
+CONFIG_HID_MICROSOFT=y
+CONFIG_HID_MONTEREY=y
 CONFIG_USB_HIDDEV=y
-CONFIG_USB=y
-CONFIG_USB_MON=y
-CONFIG_USB_XHCI_HCD=y
-CONFIG_USB_EHCI_HCD=y
+CONFIG_USB=m
+CONFIG_USB_XHCI_HCD=m
+CONFIG_USB_EHCI_HCD=m
 # CONFIG_USB_EHCI_HCD_PPC_OF is not set
-CONFIG_USB_OHCI_HCD=y
-CONFIG_USB_STORAGE=y
+CONFIG_USB_OHCI_HCD=m
+CONFIG_USB_STORAGE=m
 CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_OPAL=m
 CONFIG_RTC_DRV_GENERIC=m
 CONFIG_VIRT_DRIVERS=y
-CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_PCI=m
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_EXT4_FS=m
 CONFIG_EXT4_FS_POSIX_ACL=y
@@ -208,10 +270,9 @@ CONFIG_UDF_FS=m
 CONFIG_MSDOS_FS=m
 CONFIG_VFAT_FS=m
 CONFIG_PROC_KCORE=y
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
 # CONFIG_MISC_FILESYSTEMS is not set
 # CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_NLS=y
 CONFIG_NLS_DEFAULT="utf8"
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ASCII=y
@@ -220,27 +281,24 @@ CONFIG_NLS_UTF8=y
 CONFIG_CRC16=y
 CONFIG_CRC_ITU_T=y
 CONFIG_LIBCRC32C=y
+# CONFIG_XZ_DEC_X86 is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_SPARC is not set
 CONFIG_PRINTK_TIME=y
 CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_STACKOVERFLOW=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
 CONFIG_HARDLOCKUP_DETECTOR=y
 CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
 CONFIG_WQ_WATCHDOG=y
-CONFIG_SCHEDSTATS=y
+# CONFIG_SCHED_DEBUG is not set
 # CONFIG_FTRACE is not set
 # CONFIG_RUNTIME_TESTING_MENU is not set
 CONFIG_XMON=y
 CONFIG_XMON_DEFAULT=y
-CONFIG_SECURITY=y
-CONFIG_IMA=y
-CONFIG_EVM=y
+CONFIG_ENCRYPTED_KEYS=y
 # CONFIG_CRYPTO_ECHAINIV is not set
-CONFIG_CRYPTO_ECB=y
-CONFIG_CRYPTO_CMAC=y
-CONFIG_CRYPTO_MD4=y
-CONFIG_CRYPTO_ARC4=y
-CONFIG_CRYPTO_DES=y
 # CONFIG_CRYPTO_HW is not set
diff --git a/openpower/configs/openpower_mambo_defconfig b/openpower/configs/openpower_mambo_defconfig
index 9bc3b821..f7416462 100644
--- a/openpower/configs/openpower_mambo_defconfig
+++ b/openpower/configs/openpower_mambo_defconfig
@@ -11,7 +11,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/openpower_p9_mambo_defconfig b/openpower/configs/openpower_p9_mambo_defconfig
index 293e0326..7112ae67 100644
--- a/openpower/configs/openpower_p9_mambo_defconfig
+++ b/openpower/configs/openpower_p9_mambo_defconfig
@@ -11,7 +11,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/p9dsu_defconfig b/openpower/configs/p9dsu_defconfig
index 0a27dc5f..e1dc84a1 100644
--- a/openpower/configs/p9dsu_defconfig
+++ b/openpower/configs/p9dsu_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/palmetto_defconfig b/openpower/configs/palmetto_defconfig
index d574536c..f53937d7 100644
--- a/openpower/configs/palmetto_defconfig
+++ b/openpower/configs/palmetto_defconfig
@@ -13,7 +13,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/pseries_defconfig b/openpower/configs/pseries_defconfig
index ee5e6c94..f86735e0 100644
--- a/openpower/configs/pseries_defconfig
+++ b/openpower/configs/pseries_defconfig
@@ -13,7 +13,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/pseries_skiroot_defconfig"
diff --git a/openpower/configs/romulus_defconfig b/openpower/configs/romulus_defconfig
index 88a6ad6b..679d6a2e 100644
--- a/openpower/configs/romulus_defconfig
+++ b/openpower/configs/romulus_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/vesnin_defconfig b/openpower/configs/vesnin_defconfig
index 9aed4389..9167472c 100644
--- a/openpower/configs/vesnin_defconfig
+++ b/openpower/configs/vesnin_defconfig
@@ -13,7 +13,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/witherspoon_defconfig b/openpower/configs/witherspoon_defconfig
index 6ef0de01..3e9455e8 100644
--- a/openpower/configs/witherspoon_defconfig
+++ b/openpower/configs/witherspoon_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/witherspoon_dev_defconfig b/openpower/configs/witherspoon_dev_defconfig
index 7aa83568..34eeb58f 100644
--- a/openpower/configs/witherspoon_dev_defconfig
+++ b/openpower/configs/witherspoon_dev_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/zaius_defconfig b/openpower/configs/zaius_defconfig
index e6280c1e..f1426cdf 100644
--- a/openpower/configs/zaius_defconfig
+++ b/openpower/configs/zaius_defconfig
@@ -14,7 +14,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/zz_defconfig b/openpower/configs/zz_defconfig
index 7f755d79..7577d009 100644
--- a/openpower/configs/zz_defconfig
+++ b/openpower/configs/zz_defconfig
@@ -13,7 +13,7 @@ BR2_ROOTFS_OVERLAY="../openpower/overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.12"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"