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Windows graphic driver obtains DSM address from in-BAR mmio register which has passthroughed. Not like the other platforms obtained from pci configure space register which has virtualized. GPU GuC must use WOPCM in DSM, besides, Windows OS wants to manage DSM also. These two reason force acrn has to keep identical mapping to avoid trap mmio BAR to do the emulation. Tracked-On: #5880 Signed-off-by: Peng Sun <peng.p.sun@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/