mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2026-01-29 21:49:05 +00:00
cb816f7f65
Support shared memory based inter-vm communication for ACRN
post-launched VMs. The ivshmem mediator emulates one standard
PCI device which expose the shared memory region through its BAR2.
The shared memory region is allocated through Linux shm mechanism and
post-launched VM needs to specify the shm name and size as the acrn-dm
parameter, the VMs have same shm name parameter can communicate over
the shared memory.
For first stage, only support shared memory. Consider to support
notification(interrupt) in future.
To add a ivshmem device in device model, the usage as below
-s N,ivshmem,shm_name,shm_size
v2: Implement the ivshmem MMIO registers emulation
v3: Refine code style
Add ivshmem device usage
Refine MMIO register return value
v4: Refine comments
Use logger interfaces to print logs
Tracked-On: #4853
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
ACRN Device Model ################# Introduction ============ The ACRN Device Model provides **device sharing** capabilities between the Service OS and Guest OSs. It is a component that is used in conjunction with the `ACRN Hypervisor`_ and this is installed within the Service OS. You can find out more about Project ACRN on the `Project ACRN documentation`_ website. .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor .. _`Project ACRN documentation`: https://projectacrn.github.io/