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545c006a33
In current design, when pass-thru dev, for the PIO bar, need to ensure the guest PIO start address equals to host PIO start address. But malicious guest may reprogram the PIO bar, then hv will pass-thru the reprogramed PIO address to guest. This isn't safe behavior. When guest tries to reprogram pass-thru dev PIO bar, inject #GP to guest directly. Tracked-On: #6508 Signed-off-by: Liu,Junming <junming.liu@intel.com> Reviewed-by: Zhao Yakui <yakui.zhao@intel.com> Reviewed-by: Fei Li <fei1.li@intel.com>