[vbox-dev] Question regarding channel callbacks between guest and host
jaeyong.yoo at samsung.com
Thu Apr 24 13:18:55 UTC 2014
While I'm reading the source, I found the following sequence of function call:
[In xpdm directory] VBoxMPHGSMIDpc () -->
VBoxHGSMIProcessHostQueue () -->
hgsmiHostCmdProcess () -->
HGSMIBufferProcess () -->
hgsmiBufferProcess () -->
HGSMIChannelHandlerCall () -->
[Host side] vbvaChannelHandler
It looks like a guest-side function (in VGA driver) VBoxMPHGSMIDpc calls the host-side function (in VGA emulator) vbvaChannelHandler.
How is this possible since host and guest are in different address space (if we are using nested paging table)?
Or, I'm feeling like I miss something.
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