diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index e743f7e84e9d8..293794cf1ad0a 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -151,4 +151,10 @@ config SOC_SPACEMIT_K3
 	help
 	  select Spacemit k3 Platform SoCs.
 
+config SOC_LANXIN
+	bool "Lanxin SoCs."
+	select ARM_AMBA
+	help
+	  This enables support for Lanxin SoC platform hardware.
+
 endmenu # "SoC selection"
diff --git a/arch/riscv/configs/openeuler_defconfig b/arch/riscv/configs/openeuler_defconfig
index bcb2f23ce79c4..be1eb3bb52750 100644
--- a/arch/riscv/configs/openeuler_defconfig
+++ b/arch/riscv/configs/openeuler_defconfig
@@ -99,6 +99,7 @@ CONFIG_PREEMPT_NONE=y
 # CONFIG_PREEMPT is not set
 CONFIG_PREEMPT_COUNT=y
 # CONFIG_PREEMPT_DYNAMIC is not set
+# CONFIG_SCHED_CLASS_EXT is not set
 # CONFIG_XCU_SCHEDULER is not set
 
 #
@@ -151,6 +152,7 @@ CONFIG_GENERIC_SCHED_CLOCK=y
 # end of Scheduler features
 
 CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
+CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
 CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
 CONFIG_GCC10_NO_ARRAY_BOUNDS=y
 CONFIG_CC_NO_ARRAY_BOUNDS=y
@@ -170,12 +172,14 @@ CONFIG_CGROUP_WRITEBACK=y
 # CONFIG_CGROUP_V1_WRITEBACK is not set
 CONFIG_CGROUP_SCHED=y
 # CONFIG_QOS_SCHED is not set
+CONFIG_GROUP_SCHED_WEIGHT=y
 CONFIG_FAIR_GROUP_SCHED=y
 CONFIG_CFS_BANDWIDTH=y
 CONFIG_RT_GROUP_SCHED=y
 # CONFIG_QOS_SCHED_DYNAMIC_AFFINITY is not set
 CONFIG_CGROUP_PIDS=y
 CONFIG_CGROUP_RDMA=y
+# CONFIG_CGROUP_DMEM is not set
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_HUGETLB=y
 CONFIG_CPUSETS=y
@@ -257,6 +261,7 @@ CONFIG_RSEQ=y
 CONFIG_CACHESTAT_SYSCALL=y
 # CONFIG_DEBUG_RSEQ is not set
 CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_GUEST_PERF_EVENTS=y
 CONFIG_PERF_USE_VMALLOC=y
 # CONFIG_PC104 is not set
 
@@ -329,6 +334,7 @@ CONFIG_SOC_VIRT=y
 CONFIG_SOC_SPACEMIT=y
 CONFIG_SOC_SPACEMIT_K1=y
 CONFIG_SOC_SPACEMIT_K3=y
+CONFIG_SOC_LANXIN=y
 # end of SoC selection
 
 #
@@ -549,6 +555,7 @@ CONFIG_HAVE_KVM_IRQ_BYPASS=y
 CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL=y
 CONFIG_KVM_XFER_TO_GUEST_WORK=y
 CONFIG_KVM_GENERIC_HARDWARE_ENABLING=y
+CONFIG_KVM_GENERIC_MMU_NOTIFIER=y
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM=m
 CONFIG_ARCH_SUPPORTS_ACPI=y
@@ -614,6 +621,9 @@ CONFIG_CPU_MITIGATIONS=y
 #
 CONFIG_HOTPLUG_CORE_SYNC=y
 CONFIG_HOTPLUG_CORE_SYNC_DEAD=y
+CONFIG_HOTPLUG_CORE_SYNC_FULL=y
+CONFIG_HOTPLUG_SPLIT_STARTUP=y
+CONFIG_HOTPLUG_PARALLEL=y
 CONFIG_GENERIC_ENTRY=y
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
@@ -908,13 +918,18 @@ CONFIG_SPARSEMEM=y
 CONFIG_SPARSEMEM_EXTREME=y
 CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
 CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=y
 CONFIG_ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP=y
 CONFIG_HAVE_FAST_GUP=y
 CONFIG_ARCH_KEEP_MEMBLOCK=y
 CONFIG_MEMORY_ISOLATION=y
 CONFIG_EXCLUSIVE_SYSTEM_RAM=y
-CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+# CONFIG_MEMORY_HOTPLUG is not set
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
+CONFIG_SPLIT_PTE_PTLOCKS=y
 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
+CONFIG_SPLIT_PMD_PTLOCKS=y
 CONFIG_MEMORY_BALLOON=y
 CONFIG_BALLOON_COMPACTION=y
 CONFIG_COMPACTION=y
@@ -940,6 +955,8 @@ CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
 CONFIG_THP_SWAP=y
 # CONFIG_READ_ONLY_THP_FOR_FS is not set
 CONFIG_PGTABLE_HAS_HUGE_LEAVES=y
+CONFIG_ARCH_SUPPORTS_HUGE_PFNMAP=y
+CONFIG_ARCH_SUPPORTS_PMD_PFNMAP=y
 CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
 CONFIG_USE_PERCPU_NUMA_NODE_ID=y
 CONFIG_CMA=y
@@ -952,6 +969,7 @@ CONFIG_GENERIC_EARLY_IOREMAP=y
 CONFIG_PAGE_IDLE_FLAG=y
 CONFIG_IDLE_PAGE_TRACKING=y
 CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
+CONFIG_ARCH_HAS_PTE_DEVMAP=y
 CONFIG_ZONE_DMA32=y
 CONFIG_HMM_MIRROR=y
 CONFIG_VM_EVENT_COUNTERS=y
@@ -1019,6 +1037,7 @@ CONFIG_NET_KEY_MIGRATE=y
 # CONFIG_XDP_SOCKETS is not set
 # CONFIG_OENETCLS is not set
 CONFIG_UB_UMS=m
+CONFIG_UB_SOCKET_HANDSHAKE=y
 CONFIG_NET_HANDSHAKE=y
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
@@ -2605,6 +2624,7 @@ CONFIG_TAP=m
 CONFIG_VETH=m
 CONFIG_VIRTIO_NET=y
 CONFIG_NLMON=m
+# CONFIG_NETKIT is not set
 CONFIG_NET_VRF=m
 CONFIG_VSOCKMON=m
 # CONFIG_ARCNET is not set
@@ -3503,7 +3523,8 @@ CONFIG_SERIAL_OF_PLATFORM=y
 # Non-8250 serial port support
 #
 # CONFIG_SERIAL_AMBA_PL010 is not set
-# CONFIG_SERIAL_AMBA_PL011 is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
 # CONFIG_SERIAL_EARLYCON_SEMIHOST is not set
 CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
 # CONFIG_SERIAL_KGDB_NMI is not set
@@ -4369,6 +4390,7 @@ CONFIG_MFD_CORE=y
 # CONFIG_MFD_NTXEC is not set
 # CONFIG_MFD_RETU is not set
 # CONFIG_MFD_PCF50633 is not set
+CONFIG_MFD_SPACEMIT_P1=y
 # CONFIG_MFD_SY7636A is not set
 # CONFIG_MFD_RDC321X is not set
 # CONFIG_MFD_RT4831 is not set
@@ -4427,7 +4449,6 @@ CONFIG_MFD_SYSCON=y
 # CONFIG_MFD_STMFX is not set
 # CONFIG_MFD_ATC260X_I2C is not set
 # CONFIG_MFD_QCOM_PM8008 is not set
-CONFIG_MFD_SPACEMIT_P1=y
 # CONFIG_RAVE_SP_CORE is not set
 # CONFIG_MFD_INTEL_M10_BMC_SPI is not set
 # CONFIG_MFD_RSMU_I2C is not set
@@ -6968,6 +6989,7 @@ CONFIG_COMMON_CLK=y
 # CONFIG_COMMON_CLK_VC5 is not set
 # CONFIG_COMMON_CLK_VC7 is not set
 # CONFIG_COMMON_CLK_FIXED_MMIO is not set
+CONFIG_COMMON_CLK_RPMI=y
 CONFIG_CLK_ANALOGBITS_WRPLL_CLN28HPC=y
 CONFIG_CLK_RENESAS=y
 # CONFIG_CLK_RCAR_USB2_CLOCK_SEL is not set
@@ -7019,6 +7041,7 @@ CONFIG_PCC=y
 # CONFIG_MAILBOX_TEST is not set
 CONFIG_SUN6I_MSGBOX=y
 CONFIG_TH1520_MBOX=y
+CONFIG_RISCV_SBI_MPXY_MBOX=y
 CONFIG_IOMMU_IOVA=y
 CONFIG_IOMMU_API=y
 CONFIG_IOMMU_SUPPORT=y
@@ -7741,6 +7764,7 @@ CONFIG_RISCV_APLIC=y
 CONFIG_RISCV_APLIC_MSI=y
 CONFIG_RISCV_IMSIC=y
 CONFIG_RISCV_IMSIC_PCI=y
+CONFIG_RISCV_RPMI_SYSMSI=y
 CONFIG_SIFIVE_PLIC=y
 CONFIG_THEAD_C900_ACLINT_SSWI=y
 # end of IRQ chip support
@@ -8038,6 +8062,7 @@ CONFIG_HUGETLBFS=y
 CONFIG_HUGETLB_PAGE=y
 CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y
 # CONFIG_HUGETLB_ALLOC_LIMIT is not set
+CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING=y
 CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
 CONFIG_CONFIGFS_FS=y
 CONFIG_EFIVAR_FS=y
@@ -8930,6 +8955,7 @@ CONFIG_PANIC_ON_OOPS_VALUE=1
 CONFIG_PANIC_TIMEOUT=0
 CONFIG_LOCKUP_DETECTOR=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
+# CONFIG_SOFTLOCKUP_DETECTOR_INTR_STORM is not set
 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
 CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y
 # CONFIG_HARDLOCKUP_DETECTOR is not set
@@ -8973,7 +8999,6 @@ CONFIG_LOCK_TORTURE_TEST=m
 
 # CONFIG_DEBUG_IRQFLAGS is not set
 CONFIG_STACKTRACE=y
-# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
 # CONFIG_DEBUG_KOBJECT is not set
 
 #
@@ -9004,6 +9029,7 @@ CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
 # CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
 # CONFIG_LATENCYTOP is not set
 # CONFIG_DEBUG_CGROUP_REF is not set
+CONFIG_USER_STACKTRACE_SUPPORT=y
 CONFIG_NOP_TRACER=y
 CONFIG_HAVE_RETHOOK=y
 CONFIG_RETHOOK=y
@@ -9131,8 +9157,6 @@ CONFIG_RUNTIME_TESTING_MENU=y
 # CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_ASYNC_RAID6_TEST is not set
 # CONFIG_TEST_HEXDUMP is not set
-# CONFIG_STRING_SELFTEST is not set
-# CONFIG_TEST_STRING_HELPERS is not set
 # CONFIG_TEST_KSTRTOX is not set
 # CONFIG_TEST_PRINTF is not set
 # CONFIG_TEST_SCANF is not set