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bd92304dcf
add vpci bridge operations in hypervisor, to avoid SOS mis-operations to affect other VM's PCI devices. assumption: before hypervisor bootup, the physical pci-bridge shall be configured correctly by BIOS or other bootloader; for ACS (Access Control Service) capability, it is configured by BIOS to support the devices under it to be isolated and allocated to different VMs. to simplify the emulations of vpci bridge, set limitations as following: 1. expose all configure space registers, but readonly 2. BIST not support; by default is 0 3. not support interrupt, including INTx and MSI. TODO: 1. configure tool can select whether a PCI bridge is emulated or pass through. Open: 1. SOS how to reset PCI device under the PCI bridge? Tracked-On: #3381 Signed-off-by: Yin Fengwei <fengwei.yin@intel.com> Signed-off-by: Minggui Cao <minggui.cao@intel.com> Acked-by: Eddie Dong <eddie.dong@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/