diff --git a/kernel-4.1-mamba-arm-config b/kernel-4.1-mamba-arm-config
index 8211de6..d3a5a24 100644
--- a/kernel-4.1-mamba-arm-config
+++ b/kernel-4.1-mamba-arm-config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/arm 4.1.15 Kernel Configuration
+# Linux/arm 4.1.23mamba-arm Kernel Configuration
 #
 CONFIG_ARM=y
 CONFIG_ARM_HAS_SG_CHAIN=y
@@ -13,7 +13,6 @@ CONFIG_HAVE_TCM=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT_MAP=y
 CONFIG_STACKTRACE_SUPPORT=y
-CONFIG_HAVE_LATENCYTOP_SUPPORT=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
@@ -34,7 +33,6 @@ CONFIG_BUILDTIME_EXTABLE_SORT=y
 #
 # General setup
 #
-CONFIG_BROKEN_ON_SMP=y
 CONFIG_INIT_ENV_ARG_LIMIT=32
 CONFIG_CROSS_COMPILE=""
 # CONFIG_COMPILE_TEST is not set
@@ -78,6 +76,8 @@ CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_SPARSE_IRQ=y
 CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_ARCH_HAS_TICK_BROADCAST=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
 
 #
 # Timers subsystem
@@ -86,6 +86,7 @@ CONFIG_TICK_ONESHOT=y
 CONFIG_NO_HZ_COMMON=y
 # CONFIG_HZ_PERIODIC is not set
 CONFIG_NO_HZ_IDLE=y
+# CONFIG_NO_HZ_FULL is not set
 # CONFIG_NO_HZ is not set
 # CONFIG_HIGH_RES_TIMERS is not set
 
@@ -108,10 +109,12 @@ CONFIG_SRCU=y
 # CONFIG_TASKS_RCU is not set
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_CONTEXT_TRACKING=y
+# CONFIG_RCU_USER_QS is not set
 CONFIG_CONTEXT_TRACKING_FORCE=y
 CONFIG_RCU_FANOUT=32
 CONFIG_RCU_FANOUT_LEAF=16
 # CONFIG_RCU_FANOUT_EXACT is not set
+# CONFIG_RCU_FAST_NO_HZ is not set
 # CONFIG_TREE_RCU_TRACE is not set
 CONFIG_RCU_BOOST=y
 CONFIG_RCU_KTHREAD_PRIO=1
@@ -122,6 +125,7 @@ CONFIG_BUILD_BIN2C=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=15
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
 CONFIG_GENERIC_SCHED_CLOCK=y
 CONFIG_CGROUPS=y
 # CONFIG_CGROUP_DEBUG is not set
@@ -201,6 +205,7 @@ CONFIG_SLUB_DEBUG=y
 # CONFIG_COMPAT_BRK is not set
 # CONFIG_SLAB is not set
 CONFIG_SLUB=y
+CONFIG_SLUB_CPU_PARTIAL=y
 CONFIG_SYSTEM_TRUSTED_KEYRING=y
 # CONFIG_PROFILING is not set
 CONFIG_HAVE_OPROFILE=y
@@ -258,6 +263,7 @@ CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_MODULE_SRCVERSION_ALL is not set
 # CONFIG_MODULE_SIG is not set
 # CONFIG_MODULE_COMPRESS is not set
+CONFIG_STOP_MACHINE=y
 CONFIG_BLOCK=y
 CONFIG_LBDAF=y
 CONFIG_BLK_DEV_BSG=y
@@ -301,9 +307,13 @@ CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_DEFAULT_CFQ=y
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
+CONFIG_PADATA=y
 CONFIG_ASN1=m
 CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
 CONFIG_FREEZER=y
 
 #
@@ -379,6 +389,7 @@ CONFIG_ARCH_BCM_281XX=y
 CONFIG_ARCH_BCM_21664=y
 CONFIG_ARCH_BCM_MOBILE_L2_CACHE=y
 CONFIG_ARCH_BCM_MOBILE_SMC=y
+CONFIG_ARCH_BCM_MOBILE_SMP=y
 
 #
 # Other Architectures
@@ -591,6 +602,7 @@ CONFIG_SOC_EXYNOS5410=y
 CONFIG_SOC_EXYNOS5420=y
 CONFIG_SOC_EXYNOS5440=y
 CONFIG_SOC_EXYNOS5800=y
+CONFIG_EXYNOS5420_MCPM=y
 CONFIG_EXYNOS_CPU_SUSPEND=y
 CONFIG_PLAT_SAMSUNG=y
 
@@ -668,7 +680,9 @@ CONFIG_UX500_AUTO_PLATFORM=y
 CONFIG_UX500_DEBUG_UART=2
 CONFIG_ARCH_VEXPRESS=y
 CONFIG_ARCH_VEXPRESS_CORTEX_A5_A9_ERRATA=y
+CONFIG_ARCH_VEXPRESS_DCSCB=y
 CONFIG_ARCH_VEXPRESS_SPC=y
+CONFIG_ARCH_VEXPRESS_TC2_PM=y
 CONFIG_ARCH_VT8500=y
 CONFIG_ARCH_WM8750=y
 CONFIG_ARCH_WM8850=y
@@ -715,13 +729,13 @@ CONFIG_CPU_CP15_MMU=y
 CONFIG_ARM_THUMB=y
 # CONFIG_ARM_THUMBEE is not set
 CONFIG_ARM_VIRT_EXT=y
-# CONFIG_SWP_EMULATE is not set
+CONFIG_SWP_EMULATE=y
 # CONFIG_CPU_BIG_ENDIAN is not set
 # CONFIG_CPU_ICACHE_DISABLE is not set
-# CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_KUSER_HELPERS=y
 CONFIG_VDSO=y
+CONFIG_DMA_CACHE_RWFO=y
 CONFIG_OUTER_CACHE=y
 CONFIG_OUTER_CACHE_SYNC=y
 CONFIG_CACHE_FEROCEON_L2=y
@@ -742,10 +756,14 @@ CONFIG_MULTI_IRQ_HANDLER=y
 CONFIG_ARM_ERRATA_326103=y
 CONFIG_ARM_ERRATA_411920=y
 # CONFIG_ARM_ERRATA_430973 is not set
+CONFIG_ARM_ERRATA_643719=y
 CONFIG_ARM_ERRATA_720789=y
 CONFIG_ARM_ERRATA_754322=y
+CONFIG_ARM_ERRATA_754327=y
 CONFIG_ARM_ERRATA_364296=y
+CONFIG_ARM_ERRATA_764369=y
 CONFIG_ARM_ERRATA_775420=y
+CONFIG_ARM_ERRATA_798181=y
 # CONFIG_ARM_ERRATA_773022 is not set
 CONFIG_ICST=y
 CONFIG_TI_PRIV_EDMA=y
@@ -814,13 +832,25 @@ CONFIG_PCCARD_NONSTATIC=y
 # Kernel Features
 #
 CONFIG_HAVE_SMP=y
-# CONFIG_SMP is not set
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
+CONFIG_ARM_CPU_TOPOLOGY=y
+CONFIG_SCHED_MC=y
+CONFIG_SCHED_SMT=y
 CONFIG_HAVE_ARM_SCU=y
 CONFIG_HAVE_ARM_ARCH_TIMER=y
+CONFIG_HAVE_ARM_TWD=y
+CONFIG_MCPM=y
+CONFIG_MCPM_QUAD_CLUSTER=y
+CONFIG_BIG_LITTLE=y
+CONFIG_BL_SWITCHER=y
+CONFIG_BL_SWITCHER_DUMMY_IF=m
 CONFIG_VMSPLIT_3G=y
 # CONFIG_VMSPLIT_2G is not set
 # CONFIG_VMSPLIT_1G is not set
 CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_NR_CPUS=4
+CONFIG_HOTPLUG_CPU=y
 CONFIG_ARM_PSCI=y
 CONFIG_ARCH_NR_GPIO=1024
 # CONFIG_PREEMPT_NONE is not set
@@ -858,7 +888,6 @@ CONFIG_NEED_BOUNCE_POOL=y
 CONFIG_MMU_NOTIFIER=y
 CONFIG_KSM=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
-CONFIG_NEED_PER_CPU_KM=y
 CONFIG_CLEANCACHE=y
 CONFIG_FRONTSWAP=y
 # CONFIG_CMA is not set
@@ -916,6 +945,9 @@ CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
 # CPU frequency scaling drivers
 #
 CONFIG_CPUFREQ_DT=m
+CONFIG_ARM_BIG_LITTLE_CPUFREQ=m
+CONFIG_ARM_DT_BL_CPUFREQ=m
+CONFIG_ARM_VEXPRESS_SPC_CPUFREQ=m
 CONFIG_ARM_EXYNOS_CPUFREQ=m
 CONFIG_ARM_EXYNOS4210_CPUFREQ=y
 CONFIG_ARM_EXYNOS4X12_CPUFREQ=y
@@ -936,6 +968,7 @@ CONFIG_QORIQ_CPUFREQ=m
 # CPU Idle
 #
 CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_MULTIPLE_DRIVERS=y
 CONFIG_CPU_IDLE_GOV_LADDER=y
 CONFIG_CPU_IDLE_GOV_MENU=y
 CONFIG_DT_IDLE_STATES=y
@@ -944,12 +977,13 @@ CONFIG_DT_IDLE_STATES=y
 # ARM CPU Idle Drivers
 #
 CONFIG_ARM_CPUIDLE=y
+CONFIG_ARM_BIG_LITTLE_CPUIDLE=y
 # CONFIG_ARM_HIGHBANK_CPUIDLE is not set
 # CONFIG_ARM_ZYNQ_CPUIDLE is not set
 # CONFIG_ARM_U8500_CPUIDLE is not set
 # CONFIG_ARM_EXYNOS_CPUIDLE is not set
 # CONFIG_ARM_MVEBU_V7_CPUIDLE is not set
-# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
+CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED=y
 
 #
 # Floating point emulation
@@ -985,6 +1019,7 @@ CONFIG_HIBERNATE_CALLBACKS=y
 CONFIG_HIBERNATION=y
 CONFIG_PM_STD_PARTITION=""
 CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
 CONFIG_PM_AUTOSLEEP=y
 CONFIG_PM_WAKELOCKS=y
 CONFIG_PM_WAKELOCKS_LIMIT=100
@@ -1598,11 +1633,15 @@ CONFIG_NET_MPLS_GSO=m
 CONFIG_MPLS_ROUTING=m
 CONFIG_HSR=m
 # CONFIG_NET_SWITCHDEV is not set
+CONFIG_RPS=y
+CONFIG_RFS_ACCEL=y
+CONFIG_XPS=y
 CONFIG_CGROUP_NET_PRIO=y
 CONFIG_CGROUP_NET_CLASSID=y
 CONFIG_NET_RX_BUSY_POLL=y
 CONFIG_BQL=y
 CONFIG_BPF_JIT=y
+CONFIG_NET_FLOW_LIMIT=y
 
 #
 # Network testing
@@ -1901,6 +1940,7 @@ CONFIG_DMA_SHARED_BUFFER=y
 CONFIG_ARM_CCI=y
 CONFIG_ARM_CCI400_COMMON=y
 CONFIG_ARM_CCI400_PMU=y
+CONFIG_ARM_CCI400_PORT_CTRL=y
 CONFIG_ARM_CCN=y
 CONFIG_BRCMSTB_GISB_ARB=y
 # CONFIG_IMX_WEIM is not set
@@ -3218,7 +3258,6 @@ CONFIG_ISDN_X25=y
 #
 # ISDN feature submodules
 #
-CONFIG_ISDN_DRV_LOOP=m
 CONFIG_ISDN_DIVERSION=m
 
 #
@@ -7663,6 +7702,7 @@ CONFIG_THUNDERBOLT=m
 # Firmware Drivers
 #
 # CONFIG_FIRMWARE_MEMMAP is not set
+CONFIG_QCOM_SCM=y
 
 #
 # File systems
@@ -8021,6 +8061,7 @@ CONFIG_HAVE_DEBUG_KMEMLEAK=y
 # CONFIG_DEBUG_STACK_USAGE is not set
 # CONFIG_DEBUG_VM is not set
 CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_DEBUG_PER_CPU_MAPS is not set
 # CONFIG_DEBUG_HIGHMEM is not set
 # CONFIG_DEBUG_SHIRQ is not set
 
@@ -8073,10 +8114,10 @@ CONFIG_RCU_CPU_STALL_TIMEOUT=60
 # CONFIG_RCU_TRACE is not set
 # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
 CONFIG_NOTIFIER_ERROR_INJECTION=m
+CONFIG_CPU_NOTIFIER_ERROR_INJECT=m
 CONFIG_PM_NOTIFIER_ERROR_INJECT=m
 CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT=m
 # CONFIG_FAULT_INJECTION is not set
-# CONFIG_LATENCYTOP is not set
 CONFIG_HAVE_FUNCTION_TRACER=y
 CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
 CONFIG_HAVE_DYNAMIC_FTRACE=y
@@ -8118,11 +8159,8 @@ CONFIG_ARM_UNWIND=y
 # CONFIG_DEBUG_LL is not set
 CONFIG_DEBUG_IMX_UART_PORT=1
 CONFIG_DEBUG_VF_UART_PORT=1
-CONFIG_DEBUG_LL_INCLUDE="debug/bcm63xx.S"
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
 # CONFIG_DEBUG_UART_8250 is not set
-CONFIG_DEBUG_UART_BCM63XX=y
-CONFIG_DEBUG_UART_PHYS=0xfffe8600
-CONFIG_DEBUG_UART_VIRT=0xfcfe8600
 CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
 # CONFIG_PID_IN_CONTEXTIDR is not set
 # CONFIG_DEBUG_SET_MODULE_RONX is not set
@@ -8200,6 +8238,7 @@ CONFIG_CRYPTO_USER=m
 CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
 CONFIG_CRYPTO_GF128MUL=m
 CONFIG_CRYPTO_NULL=m
+CONFIG_CRYPTO_PCRYPT=m
 CONFIG_CRYPTO_WORKQUEUE=y
 CONFIG_CRYPTO_CRYPTD=m
 CONFIG_CRYPTO_MCRYPTD=m
@@ -8389,6 +8428,7 @@ CONFIG_ASSOCIATIVE_ARRAY=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_DMA=y
 CONFIG_CHECK_SIGNATURE=y
+CONFIG_CPU_RMAP=y
 CONFIG_DQL=y
 CONFIG_GLOB=y
 # CONFIG_GLOB_SELFTEST is not set
diff --git a/kernel.spec b/kernel.spec
index b4f7c85..642ca37 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -21,7 +21,7 @@
 
 # Don't parametrize this, it's a check to avoid build a kernel without having
 # edited the obsoletes needed for multiple kernel support
-%define KERNEL_OBSOLETES_ARE_FOR_VERSION 4.1.18
+%define KERNEL_OBSOLETES_ARE_FOR_VERSION 4.1.23
 
 #% define kernel_longterm 1
 %define kernel_MAJver %(echo %version | cut -d. -f1)
@@ -87,7 +87,7 @@
 %define _use_internal_dependency_generator 1
 
 Name:          kernel
-Version:       4.1.18
+Version:       4.1.23
 Release:       1mamba
 Summary:       The Linux Kernel, the operating system core itself
 Group:         System/Kernel and Hardware
@@ -212,6 +212,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET} < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET} = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET} = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET} = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET} = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 
 %description %{KERNEL_TARGET}
@@ -231,6 +232,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-source < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-source = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-source = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-source = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-source = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 
 %description %{KERNEL_TARGET}-source
@@ -247,6 +249,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-headers < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-headers = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 
 %description %{KERNEL_TARGET}-headers
@@ -263,6 +266,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-headers-sanitised < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers-sanitised = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers-sanitised = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-headers-sanitised = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-headers-sanitised = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 
 %description %{KERNEL_TARGET}-headers-sanitised
@@ -280,6 +284,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-sound < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-sound = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-sound = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-sound = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-sound = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 
 %description %{KERNEL_TARGET}-sound
@@ -298,6 +303,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-wireless < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-wireless = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-wireless = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-wireless = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-wireless = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 Requires:      crda
 
@@ -315,6 +321,7 @@ Obsoletes:     kernel-%{KERNEL_TARGET}-firmware < 3.10
 Obsoletes:     kernel-%{KERNEL_TARGET}-firmware = %{kernel_majver}.14
 Obsoletes:     kernel-%{KERNEL_TARGET}-firmware = %{kernel_majver}.15
 Obsoletes:     kernel-%{KERNEL_TARGET}-firmware = %{kernel_majver}.17
+Obsoletes:     kernel-%{KERNEL_TARGET}-firmware = %{kernel_majver}.18
 ## KERNELOBSOLETES-END
 Provides:      linux_firmware
 
@@ -1038,6 +1045,9 @@ exit 0
 /lib/firmware/*
 
 %changelog
+* Tue May 03 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.23-1mamba
+- update to 4.1.23
+
 * Sat Mar 05 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.18-1mamba
 - update to 4.1.18