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In some scenarios (e.g., nested) where lapic-pt is enabled for a vcpu running on a pcpu hosting console timer, the hv console will be inaccessible. This patch adds the console callback to every VM-exit event so that the console can still be somewhat functional under such circumstance. Since this is VM-exit driven, the VM-exit/second can be low in certain cases (e.g., idle or running stress workload). In extreme cases where the guest panics/hangs, there will be no VM-exits at all. In most cases, the shell is laggy but functional (probably enough for debugging purpose). Tracked-On: #6312 Signed-off-by: Yifan Liu <yifan1.liu@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/