Hello folks, So from the documentation for HGCM - A request is constructed in the guest physical memory, which must be locked by the guest. The physical address is passed to the VMM device using a 32 bit out edx, eax instruction.
Can someone elaborate as to where in the code I can find as to how the physical address is passed to the VMM device ? Also how is the guest physical memory mapped to be accessed by the host ? I looked around in the HGCM files in the both Additions/common/VBoxGuest* and in Devices/VMMDev but I was just going around in circles. Any pointers would be really appreciated. Thanks
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