On Sun, Feb 07, 2021 at 11:10:22AM +0800, shuo.a....@intel.com wrote: > From: Shuo Liu <shuo.a....@intel.com> > > ACRN 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. > > ACRN implements a hybrid VMM architecture, using a privileged Service VM. The > Service VM manages the system resources (CPU, memory, etc.) and I/O devices of > User VMs. Multiple User VMs are supported, with each of them running Linux, > Android OS or Windows. Both Service VM and User VMs are guest VM. > > Below figure shows the architecture. > > Service VM User VM > +----------------------------+ | +------------------+ > | +--------------+ | | | | > | |ACRN userspace| | | | | > | +--------------+ | | | | > |-----------------ioctl------| | | | ... > |kernel space +----------+ | | | | > | | HSM | | | | Drivers | > | +----------+ | | | | > +--------------------|-------+ | +------------------+ > +---------------------hypercall----------------------------------------+ > | ACRN Hypervisor | > +----------------------------------------------------------------------+ > | Hardware | > +----------------------------------------------------------------------+ > > There is only one Service VM which could run Linux as OS. > > In a typical case, the Service VM will be auto started when ACRN Hypervisor is > booted. Then the ACRN userspace (an application running in Service VM) could > be > used to start/stop User VMs by communicating with ACRN Hypervisor Service > Module (HSM). > > ACRN Hypervisor Service Module (HSM) is a middle layer that allows the ACRN > userspace and Service VM OS kernel to communicate with ACRN Hypervisor > and manage different User VMs. This middle layer provides the following > functionalities, > - Issues hypercalls to the hypervisor to manage User VMs: > * VM/vCPU management > * Memory management > * Device passthrough > * Interrupts injection > - I/O requests handling from User VMs. > - Exports ioctl through HSM char device. > - Exports function calls for other kernel modules > > ACRN is focused on embedded system. So it doesn't support some features. > E.g., > - ACRN doesn't support VM migration. > - ACRN doesn't support vCPU migration. > > This patch set adds the HSM to the Linux kernel. > I also added a simple example to launch a small guest (with several > instructions > as payload) on ACRN with demonstration ioctl usage. > > The basic ARCN support was merged to upstream already. > https://lore.kernel.org/lkml/1559108037-18813-3-git-send-email-yakui.z...@intel.com/
Thanks for sticking with this, now merged to my tree. thanks, greg k-h
