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In physical destination mode, the destination processor is specified by its local APIC ID. When a CPU switch xAPIC Mode to x2APIC Mode or vice versa, the local APIC ID is not changed. So a vcpu in x2APIC Mode could use physical Destination Mode to send an IPI to another vcpu in xAPIC Mode by writing ICR. This patch adds support for a vCPU A could write ICR to send IPI to another vCPU B which is in different APIC mode. Tracked-On: #5923 Signed-off-by: Li Fei1 <fei1.li@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/