Hi,All I am trying to build the seL4 VMM example for the qemu-arm-virt platform from seL4/camkes-vm-exmaples. I can build the vmm image successfully, but I cannot run the image. Here are what I did: 1. I use the "../init-build.sh -DCAMKES_VM_APP=vm_minimal -DPLATFORM=qemu-arm-virt" command. 2. ninja After these two steps, the vmm image, capdl-loader-image-arm-qemu-arm-virt is successfully built. But when I run the generated scripts, ./simulate, to run the VMM on qemu, the vmm fails to boot up. The error message is attached below. I use Ubuntu 20.04 and QEMU emulator version 4.2.1. Do I miss something here? Do I use the correct version of the building environment? Any help would be appreciated! ./simulate ./simulate: QEMU command: qemu-system-arm -machine virt,virtualization=on,highmem=off,secure=off -cpu cortex-a15 -nographic -m size=2048 -kernel images/capdl-loader-image-arm-qemu-arm-virt ELF-loader started on CPU: ARM Ltd. Cortex-A15 r2p1 paddr=[61805000..62c02ebf] No DTB passed in from boot loader. Looking for DTB in CPIO archive...found at 6192264c. Loaded DTB from 6192264c. paddr=[60042000..60043fff] ELF-loading image 'kernel' to 60000000 paddr=[60000000..60041fff] vaddr=[e0000000..e0041fff] virt_entry=e0000000 ELF-loading image 'capdl-loader' to 60044000 paddr=[60044000..6140cfff] vaddr=[10000..13d8fff] virt_entry=1880c Enabling hypervisor MMU and paging Jumping to kernel-image entry point... Bootstrapping kernel Warning: Could not infer GIC interrupt target ID, assuming 0. available phys memory regions: 1 [60000000..c0000000] reserved virt address space regions: 4 [e0000000..e0042000] [e0042000..e0043da9] [e0044000..e140d000] [ff000000..ff200000] Booting all finished, dropped to user space *<<*seL4(CPU 0)* [decodeUntypedInvocation/205 T0xffc13400 "rootserver" @1070c]: Untyped Retype: Insufficient memory (1 * 33554432 bytes needed, 0 bytes available).>>* *<<*seL4(CPU 0)* [decodeUntypedInvocation/205 T0xffc13400 "rootserver" @1070c]: Untyped Retype: Insufficient memory (1 * 16777216 bytes needed, 0 bytes available).>>* *<<*seL4(CPU 0)* [decodeUntypedInvocation/205 T0xffc13400 "rootserver" @1070c]: Untyped Retype: Insufficient memory (1 * 16777216 bytes needed, 0 bytes available).>>* *<<*seL4(CPU 0)* [decodeUntypedInvocation/205 T0xffc13400 "rootserver" @1070c]: Untyped Retype: Insufficient memory (1 * 2097152 bytes needed, 0 bytes available).>>* *<<*seL4(CPU 0)* [decodeUntypedInvocation/205 T0xffc13400 "rootserver" @1070c]: Untyped Retype: Insufficient memory (1 * 65536 bytes needed, 0 bytes available).>>* run@main.c:1332 Invalid 'num_vcpus' attribute setting: Exceeds maximum number of supported nodes. Capping value to CONFIG_MAX_NUM_NODES (1) install_vm_devices@main.c:704 module name: map_frame_hack install_vm_devices@main.c:704 module name: init_ram Loading Kernel: 'linux' Loading Initrd: 'linux-initrd' Loading Generated DTB -------- *Pagefault from [vm0]: read prefetch fault @ PC: 0x4 IPA: 0x4, FSR: 0x6* *Context:* *r0: 0x0* *r1: 0xffffffff* *r2: 0x4f000000* *r3: 0x0* *r4: 0x0* *r5: 0x0* *r6: 0x0* *r7: 0x0* *r8: 0x0* *r9: 0x0* *r10: 0x0* *r11: 0x0* *r12: 0x0* *pc: 0x4* *r14: 0x0* *sp: 0x0* *cpsr: 0x9b* m-------- main_continued@main.c:1310 Failed to run VM Halting...