1. Milestone Goal: “Port the skeleton of LibVMI and system library dependencies” The goal of the first milestone is described as following in the proposal to GSoC 2018: Since the previous work of TinyVMI already proved the feasibility of porting LibVMI into MiniOS, we can take further steps to port as many modules as possible into MiniOS. We should a) try to keep the original LibVMI file/folder structure unless we have to change it to adopt the MiniOS features.

Port GQueue to TinyVMI. Ongoing LibVMI use multiple caches to temporarily store the fetched information (or reconstructed information) from the target virtual machine. This week a cache called memory_cache_lru is re-implemented in order to keep consistent with the original LibVMI code. memory_cache_lru is conceptually similar to TLB in an operating system, which stores the virtual address to phisical address mapping in an order of latest recent unused(LRU). LibVMI uses GQueue in GLib to manage the memory cache LRU list, and TinyVMI previously used a hand-crafted double linked list to store the LRU list.

Problem: When compiling Xen from source with Ubuntu 18.04, yields error: static declaration of ‘memfd_create’ follows non-static declaration: $ cd xen-4.10.0 $ ./configure --enable-systemd --enable-stubdom $ make -C xen menuconfig $ make dist-xen $ make dist-tools ...... (looks good) CC util/memfd.o /xen-4.10.0/tools/qemu-xen/util/memfd.c:40:12: error: static declaration of ‘memfd_create’ follows non-static declaration static int memfd_create(const char *name, unsigned int flags) ^~~~~~~~~~~~ In file included from /usr/include/x86_64-linux-gnu/bits/mman-linux.h:115:0, from /usr/include/x86_64-linux-gnu/bits/mman.h:45, from /usr/include/x86_64-linux-gnu/sys/mman.h:41, from /xen-4.10.0/tools/qemu-xen/include/sysemu/os-posix.h:29, from /xen-4.