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cee45a80d9
Add the default handlers for PIO and MMIO access which returns all FFs on read and discards write. These default handlers are registered when SOS VM or pre-launched VM is created. v3 -> v4: - use single layer if in hv_emulate_pio - change the implementation of pio_default_read v2 -> v3: - use runtime vm type instead of CONFIG_PARTITION_MODE - revise the pio/mmio emulation functions - revise the pio/mmio default read functions according to MISRA C - revise the commit message v1 -> v2: - add default handlers members in struct acrn_vm and add interfaces to register default handlers for PIO and MMIO. Tracked-On: #2860 Signed-off-by: Jian Jun Chen <jian.jun.chen@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/