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On some platforms, HPA regions for Virtual Machine can not be contiguous because of E820 reserved type or PCI hole. In such cases, pre-launched VMs need to be assigned non-contiguous memory regions and this patch addresses it. To keep things simple, current design has the following assumptions, 1. HPA2 always will be placed after HPA1 2. HPA1 and HPA2 don’t share a single ve820 entry. (Create multiple entries if needed but not shared) 3. Only support 2 non-contiguous HPA regions (can extend at a later point for multiple non-contiguous HPA) Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com> Tracked-On: #4195 Acked-by: Anthony Xu <anthony.xu@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/