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75b031b63c
Currently the DSM (Data of Stolen Memory) size was hardcoded to 64M in ACRN, meaning that users must set "DVMT Pre-Allocated" to 64M in order to make IGD passthrough (GVT-d) to work. This patch reads the BIOS- configured memory size from GGC (GMCH Graphics Control, 0x50) register and passthrough corresponding area to guest. Tracked-On: #8432 Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com> Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
ACRN Device Model ################# Introduction ============ The ACRN Device Model provides **device sharing** capabilities between the Service VM and post-launched User VMs. It is a component that is used in conjunction with the `ACRN Hypervisor`_ and is installed within the Service VM. .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor