Messages in this thread |  | | Date | Tue, 9 Feb 2021 18:18:48 +0800 | From | Shuo A Liu <> | Subject | Re: [PATCH v9 00/18] HSM driver for ACRN hypervisor |
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On Tue 9.Feb'21 at 11:00:55 +0100, Greg Kroah-Hartman wrote: >On Sun, Feb 07, 2021 at 11:10:22AM +0800, shuo.a.liu@intel.com wrote: >> From: Shuo Liu <shuo.a.liu@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.zhao@intel.com/ > >Thanks for sticking with this, now merged to my tree.
Thanks Greg and all for reviewing this series.
A really good Spring Festival gift for ACRN. :)
Thanks shuo
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