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In init_paging(), when modify page table, it does a round up to 2M on the starting address of HV memory. If the address is not 2M aligned, memory overwrite occurs, or memory attribute(cache, u/s) may be not right. Besides, trusty memory (uos_sworld_memory) in .bss section is 2M aligned during compiling, after enabling HV memroy 2M alignment, when relocation is enabled, EFI stub or other loaders just needs to find a 2M-aligned starting addr for HV memory. Tracked-On: #2035 Signed-off-by: Chaohong guo <chaohong.guo@intel.com>
ACRN Hypervisor ############### The open source `Project ACRN`_ defines a device hypervisor reference stack and an architecture for running multiple software subsystems, managed securely, on a consolidated system by means of a virtual machine manager. It also defines a reference framework implementation for virtual device emulation, called the “ACRN Device Model”. The ACRN Hypervisor is a Type 1 reference hypervisor stack, running directly on the bare-metal hardware, and is suitable for a variety of IoT and embedded device solutions. The ACRN hypervisor addresses the gap that currently exists between datacenter hypervisors, and hard partitioning hypervisors. The ACRN hypervisor architecture partitions the system into different functional domains, with carefully selected guest OS sharing optimizations for IoT and embedded devices. You can find out more about Project ACRN on the `Project ACRN documentation`_ website. .. _`Project ACRN`: https://projectacrn.org .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor .. _`Project ACRN documentation`: https://projectacrn.github.io/