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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. So TGL has to keep identical mapping to avoid trap mmio BAR to do the emulation. To keep simple, this patch hardcode the TGL DSM region in vE820 table, this will cause memory waste here. In the near future, we need refine the entire vE820 logic as it is hard to maintained due to many reserved regions have introduced in recently. Signed-off-by: Sun Peng <peng.p.sun@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com> Tracked-On: #5461
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/