diff --git a/README.md b/README.md
index aa42445ca..ef688ec00 100644
--- a/README.md
+++ b/README.md
@@ -165,7 +165,7 @@ To build the kernel:
 
 # Clone the Cloud Hypervisor Linux branch
 $ pushd $CLOUDH
-$ git clone --depth 1 https://github.com/cloud-hypervisor/linux.git -b virtio-fs-virtio-iommu-5.5-rc1 linux-cloud-hypervisor
+$ git clone --depth 1 https://github.com/cloud-hypervisor/linux.git -b virtio-fs-virtio-iommu-virtio-mem-5.6-rc4 linux-cloud-hypervisor
 $ pushd linux-cloud-hypervisor
 
 # Use the cloud-hypervisor kernel config to build your kernel
diff --git a/resources/linux-virtio-fs-virtio-iommu-config b/resources/linux-virtio-fs-virtio-iommu-config
index 0f3897c34..f25fb983b 100644
--- a/resources/linux-virtio-fs-virtio-iommu-config
+++ b/resources/linux-virtio-fs-virtio-iommu-config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 5.5.0-rc1 Kernel Configuration
+# Linux/x86 5.6.0-rc4 Kernel Configuration
 #
 
 #
@@ -14,7 +14,7 @@ CONFIG_CC_HAS_ASM_GOTO=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_WARN_MAYBE_UNINITIALIZED=y
 CONFIG_IRQ_WORK=y
-CONFIG_BUILDTIME_EXTABLE_SORT=y
+CONFIG_BUILDTIME_TABLE_SORT=y
 CONFIG_THREAD_INFO_IN_TASK=y
 
 #
@@ -169,6 +169,7 @@ CONFIG_CGROUP_BPF=y
 CONFIG_SOCK_CGROUP_DATA=y
 CONFIG_NAMESPACES=y
 CONFIG_UTS_NS=y
+# CONFIG_TIME_NS is not set
 CONFIG_IPC_NS=y
 CONFIG_USER_NS=y
 CONFIG_PID_NS=y
@@ -178,6 +179,7 @@ CONFIG_SCHED_AUTOGROUP=y
 # CONFIG_SYSFS_DEPRECATED is not set
 CONFIG_RELAY=y
 # CONFIG_BLK_DEV_INITRD is not set
+# CONFIG_BOOT_CONFIG is not set
 CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_SYSCTL=y
@@ -212,6 +214,7 @@ CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
 CONFIG_KALLSYMS_BASE_RELATIVE=y
 CONFIG_BPF_SYSCALL=y
+CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
 CONFIG_USERFAULTFD=y
 CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
 CONFIG_RSEQ=y
@@ -320,6 +323,8 @@ CONFIG_X86_CMPXCHG64=y
 CONFIG_X86_CMOV=y
 CONFIG_X86_MINIMUM_CPU_FAMILY=64
 CONFIG_X86_DEBUGCTLMSR=y
+CONFIG_IA32_FEAT_CTL=y
+CONFIG_X86_VMX_FEATURE_NAMES=y
 # CONFIG_PROCESSOR_SELECT is not set
 CONFIG_CPU_SUP_INTEL=y
 CONFIG_CPU_SUP_AMD=y
@@ -389,7 +394,6 @@ CONFIG_ARCH_USES_PG_UNCACHED=y
 CONFIG_ARCH_RANDOM=y
 CONFIG_X86_SMAP=y
 # CONFIG_X86_UMIP is not set
-# CONFIG_X86_INTEL_MPX is not set
 # CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS is not set
 CONFIG_X86_INTEL_TSX_MODE_OFF=y
 # CONFIG_X86_INTEL_TSX_MODE_ON is not set
@@ -593,6 +597,7 @@ CONFIG_EFI_RUNTIME_WRAPPERS=y
 # CONFIG_APPLE_PROPERTIES is not set
 # CONFIG_RESET_ATTACK_MITIGATION is not set
 # CONFIG_EFI_RCI2_TABLE is not set
+# CONFIG_EFI_DISABLE_PCI_DMA is not set
 # end of EFI (Extensible Firmware Interface) Support
 
 CONFIG_EFI_EARLYCON=y
@@ -618,6 +623,7 @@ CONFIG_HAVE_KVM_IRQ_BYPASS=y
 CONFIG_HAVE_KVM_NO_POLL=y
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM=y
+# CONFIG_KVM_WERROR is not set
 CONFIG_KVM_INTEL=y
 # CONFIG_KVM_AMD is not set
 # CONFIG_VHOST_NET is not set
@@ -666,7 +672,8 @@ CONFIG_HAVE_PERF_REGS=y
 CONFIG_HAVE_PERF_USER_STACK_DUMP=y
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
-CONFIG_HAVE_RCU_TABLE_FREE=y
+CONFIG_MMU_GATHER_TABLE_FREE=y
+CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
 CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
 CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
 CONFIG_HAVE_CMPXCHG_LOCAL=y
@@ -911,6 +918,7 @@ CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
+# CONFIG_MPTCP is not set
 # CONFIG_NETWORK_SECMARK is not set
 CONFIG_NET_PTP_CLASSIFY=y
 # CONFIG_NETWORK_PHY_TIMESTAMPING is not set
@@ -940,6 +948,7 @@ CONFIG_HAVE_NET_DSA=y
 # CONFIG_OPENVSWITCH is not set
 CONFIG_VSOCKETS=y
 CONFIG_VSOCKETS_DIAG=y
+# CONFIG_VSOCKETS_LOOPBACK is not set
 CONFIG_VIRTIO_VSOCKETS=y
 CONFIG_VIRTIO_VSOCKETS_COMMON=y
 # CONFIG_NETLINK_DIAG is not set
@@ -985,6 +994,7 @@ CONFIG_STREAM_PARSER=y
 CONFIG_GRO_CELLS=y
 CONFIG_NET_SOCK_MSG=y
 CONFIG_FAILOVER=y
+# CONFIG_ETHTOOL_NETLINK is not set
 CONFIG_HAVE_EBPF_JIT=y
 
 #
@@ -1129,7 +1139,6 @@ CONFIG_BLK_DEV_RAM_SIZE=16384
 # CONFIG_CDROM_PKTCDVD is not set
 # CONFIG_ATA_OVER_ETH is not set
 CONFIG_VIRTIO_BLK=y
-# CONFIG_VIRTIO_BLK_SCSI is not set
 # CONFIG_BLK_DEV_RBD is not set
 # CONFIG_BLK_DEV_RSXX is not set
 
@@ -1220,6 +1229,7 @@ CONFIG_NETDEVICES=y
 CONFIG_NET_CORE=y
 # CONFIG_BONDING is not set
 # CONFIG_DUMMY is not set
+# CONFIG_WIREGUARD is not set
 # CONFIG_EQUALIZER is not set
 # CONFIG_NET_TEAM is not set
 # CONFIG_MACVLAN is not set
@@ -1350,6 +1360,7 @@ CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
 CONFIG_SERIAL_8250_PNP=y
+# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
 # CONFIG_SERIAL_8250_FINTEK is not set
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DMA=y
@@ -1443,7 +1454,6 @@ CONFIG_PTP_1588_CLOCK=y
 # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
 #
 CONFIG_PTP_1588_CLOCK_KVM=y
-# CONFIG_PTP_1588_CLOCK_IDTCM is not set
 # end of PTP clock support
 
 # CONFIG_PINCTRL is not set
@@ -1460,7 +1470,6 @@ CONFIG_THERMAL_WRITABLE_TRIPS=y
 CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
 # CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
 # CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
-# CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set
 CONFIG_THERMAL_GOV_FAIR_SHARE=y
 CONFIG_THERMAL_GOV_STEP_WISE=y
 # CONFIG_THERMAL_GOV_BANG_BANG is not set
@@ -1523,7 +1532,6 @@ CONFIG_VGA_ARB=y
 CONFIG_VGA_ARB_MAX_GPUS=16
 # CONFIG_VGA_SWITCHEROO is not set
 # CONFIG_DRM is not set
-# CONFIG_DRM_DP_CEC is not set
 
 #
 # ARM devices
@@ -1728,7 +1736,9 @@ CONFIG_DMA_VIRTUAL_CHANNELS=y
 CONFIG_DMA_ACPI=y
 # CONFIG_ALTERA_MSGDMA is not set
 # CONFIG_INTEL_IDMA64 is not set
+# CONFIG_INTEL_IDXD is not set
 # CONFIG_INTEL_IOATDMA is not set
+# CONFIG_PLX_DMA is not set
 # CONFIG_QCOM_HIDMA_MGMT is not set
 # CONFIG_QCOM_HIDMA is not set
 CONFIG_DW_DMAC_CORE=y
@@ -1749,6 +1759,7 @@ CONFIG_HSU_DMA=y
 # DMABUF options
 #
 # CONFIG_SYNC_FILE is not set
+# CONFIG_DMABUF_HEAPS is not set
 # end of DMABUF options
 
 # CONFIG_AUXDISPLAY is not set
@@ -1780,6 +1791,7 @@ CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_PCI_LEGACY=y
 CONFIG_VIRTIO_PMEM=y
 CONFIG_VIRTIO_BALLOON=y
+# CONFIG_VIRTIO_MEM is not set
 CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
@@ -1918,6 +1930,7 @@ CONFIG_VIRTIO_IOMMU_TOPOLOGY=y
 # CONFIG_BCM_KONA_USB2_PHY is not set
 # CONFIG_PHY_PXA_28NM_HSIC is not set
 # CONFIG_PHY_PXA_28NM_USB2 is not set
+# CONFIG_PHY_INTEL_EMMC is not set
 # end of PHY Subsystem
 
 # CONFIG_POWERCAP is not set
@@ -1929,7 +1942,7 @@ CONFIG_VIRTIO_IOMMU_TOPOLOGY=y
 # end of Performance monitor support
 
 CONFIG_RAS=y
-# CONFIG_THUNDERBOLT is not set
+# CONFIG_USB4 is not set
 
 #
 # Android
@@ -1959,6 +1972,7 @@ CONFIG_DAX=y
 # end of HW tracing support
 
 # CONFIG_FPGA is not set
+# CONFIG_TEE is not set
 # CONFIG_UNISYS_VISORBUS is not set
 # CONFIG_SIOX is not set
 # CONFIG_SLIMBUS is not set
@@ -1998,6 +2012,7 @@ CONFIG_EXPORTFS=y
 CONFIG_FILE_LOCKING=y
 CONFIG_MANDATORY_FILE_LOCKING=y
 CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_ALGS=y
 # CONFIG_FS_VERITY is not set
 CONFIG_FSNOTIFY=y
 CONFIG_DNOTIFY=y
@@ -2352,7 +2367,7 @@ CONFIG_CRYPTO_LIB_ARC4=y
 # CONFIG_CRYPTO_LIB_CHACHA is not set
 # CONFIG_CRYPTO_LIB_CURVE25519 is not set
 CONFIG_CRYPTO_LIB_DES=y
-CONFIG_CRYPTO_LIB_POLY1305_RSIZE=4
+CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11
 CONFIG_CRYPTO_LIB_POLY1305_GENERIC=y
 # CONFIG_CRYPTO_LIB_POLY1305 is not set
 # CONFIG_CRYPTO_LIB_CHACHA20POLY1305 is not set
@@ -2424,6 +2439,7 @@ CONFIG_IRQ_POLL=y
 CONFIG_UCS2_STRING=y
 CONFIG_HAVE_GENERIC_VDSO=y
 CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_VDSO_TIME_NS=y
 CONFIG_FONT_SUPPORT=y
 # CONFIG_FONTS is not set
 CONFIG_FONT_8x8=y
@@ -2496,6 +2512,8 @@ CONFIG_DEBUG_MISC=y
 # CONFIG_PAGE_OWNER is not set
 # CONFIG_PAGE_POISONING is not set
 # CONFIG_DEBUG_RODATA_TEST is not set
+CONFIG_GENERIC_PTDUMP=y
+# CONFIG_PTDUMP_DEBUGFS is not set
 # CONFIG_DEBUG_OBJECTS is not set
 # CONFIG_SLUB_DEBUG_ON is not set
 # CONFIG_SLUB_STATS is not set
@@ -2601,14 +2619,46 @@ CONFIG_HAVE_C_RECORDMCOUNT=y
 CONFIG_TRACING_SUPPORT=y
 # CONFIG_FTRACE is not set
 # CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
-# CONFIG_KUNIT is not set
-# CONFIG_NOTIFIER_ERROR_INJECTION is not set
-# CONFIG_FAULT_INJECTION is not set
-# end of Kernel hacking
+# CONFIG_SAMPLES is not set
+CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
+CONFIG_STRICT_DEVMEM=y
+# CONFIG_IO_STRICT_DEVMEM is not set
+
+#
+# x86 Debugging
+#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_X86_VERBOSE_BOOTUP=y
+CONFIG_EARLY_PRINTK=y
+# CONFIG_EARLY_PRINTK_DBGP is not set
+# CONFIG_EARLY_PRINTK_USB_XDBC is not set
+# CONFIG_EFI_PGT_DUMP is not set
+# CONFIG_DEBUG_WX is not set
+CONFIG_DOUBLEFAULT=y
+# CONFIG_DEBUG_TLBFLUSH is not set
+CONFIG_HAVE_MMIOTRACE_SUPPORT=y
+# CONFIG_X86_DECODER_SELFTEST is not set
+CONFIG_IO_DELAY_0X80=y
+# CONFIG_IO_DELAY_0XED is not set
+# CONFIG_IO_DELAY_UDELAY is not set
+# CONFIG_IO_DELAY_NONE is not set
+# CONFIG_DEBUG_BOOT_PARAMS is not set
+# CONFIG_CPA_DEBUG is not set
+# CONFIG_DEBUG_ENTRY is not set
+# CONFIG_DEBUG_NMI_SELFTEST is not set
+# CONFIG_X86_DEBUG_FPU is not set
+# CONFIG_PUNIT_ATOM_DEBUG is not set
+# CONFIG_UNWINDER_ORC is not set
+CONFIG_UNWINDER_FRAME_POINTER=y
+# CONFIG_UNWINDER_GUESS is not set
+# end of x86 Debugging
 
 #
 # Kernel Testing and Coverage
 #
+# CONFIG_KUNIT is not set
+# CONFIG_NOTIFIER_ERROR_INJECTION is not set
+# CONFIG_FAULT_INJECTION is not set
 CONFIG_ARCH_HAS_KCOV=y
 CONFIG_CC_HAS_SANCOV_TRACE_PC=y
 # CONFIG_KCOV is not set
@@ -2642,38 +2692,5 @@ CONFIG_RUNTIME_TESTING_MENU=y
 # CONFIG_TEST_STACKINIT is not set
 # CONFIG_TEST_MEMINIT is not set
 # CONFIG_MEMTEST is not set
-# CONFIG_SAMPLES is not set
-CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
-CONFIG_STRICT_DEVMEM=y
-# CONFIG_IO_STRICT_DEVMEM is not set
-
-#
-# x86 Debugging
-#
-CONFIG_TRACE_IRQFLAGS_SUPPORT=y
-CONFIG_X86_VERBOSE_BOOTUP=y
-CONFIG_EARLY_PRINTK=y
-# CONFIG_EARLY_PRINTK_DBGP is not set
-# CONFIG_EARLY_PRINTK_USB_XDBC is not set
-# CONFIG_X86_PTDUMP is not set
-# CONFIG_EFI_PGT_DUMP is not set
-# CONFIG_DEBUG_WX is not set
-CONFIG_DOUBLEFAULT=y
-# CONFIG_DEBUG_TLBFLUSH is not set
-CONFIG_HAVE_MMIOTRACE_SUPPORT=y
-# CONFIG_X86_DECODER_SELFTEST is not set
-CONFIG_IO_DELAY_0X80=y
-# CONFIG_IO_DELAY_0XED is not set
-# CONFIG_IO_DELAY_UDELAY is not set
-# CONFIG_IO_DELAY_NONE is not set
-# CONFIG_DEBUG_BOOT_PARAMS is not set
-# CONFIG_CPA_DEBUG is not set
-# CONFIG_DEBUG_ENTRY is not set
-# CONFIG_DEBUG_NMI_SELFTEST is not set
-# CONFIG_X86_DEBUG_FPU is not set
-# CONFIG_PUNIT_ATOM_DEBUG is not set
-# CONFIG_UNWINDER_ORC is not set
-CONFIG_UNWINDER_FRAME_POINTER=y
-# CONFIG_UNWINDER_GUESS is not set
-# end of x86 Debugging
 # end of Kernel Testing and Coverage
+# end of Kernel hacking
diff --git a/scripts/run_integration_tests.sh b/scripts/run_integration_tests.sh
index 0ed84d9e3..365e60461 100755
--- a/scripts/run_integration_tests.sh
+++ b/scripts/run_integration_tests.sh
@@ -85,7 +85,7 @@ LINUX_CUSTOM_DIR="linux-custom"
 if [ ! -f "$VMLINUX_IMAGE" ]; then
     SRCDIR=$PWD
     pushd $WORKLOADS_DIR
-    time git clone --depth 1 "https://github.com/cloud-hypervisor/linux.git" -b "virtio-fs-virtio-iommu-topo-5.5-rc1" $LINUX_CUSTOM_DIR
+    time git clone --depth 1 "https://github.com/cloud-hypervisor/linux.git" -b "virtio-fs-virtio-iommu-virtio-mem-5.6-rc4" $LINUX_CUSTOM_DIR
     pushd $LINUX_CUSTOM_DIR
     cp $SRCDIR/resources/linux-virtio-fs-virtio-iommu-config .config
     time make bzImage -j `nproc`