[vbox-dev] Using HGCM

François Revol revol at free.fr
Thu Mar 11 02:08:55 PST 2010


Hi,

Le Thu, 11 Mar 2010 10:51:19 +0100, Vitali Pelenjow a écrit :
> Hi Nev,
> 
> HGSMI uses a virtual device memory to exchange data between host and 
> guest. Currently it is only implemented for the virtual VGA device.
> Both guest and host can place some data in the guest VRAM and then 
> the 
> other side will read data. Guest informs host using an port IO,
> host can inform guest using an IRQ or the guest can poll an IO port.

Maybe it could be done as an extension of the shared files ? or a 
twisted version of it... vboxsf would handle mmap() requests for some 
specific files by cloning the pci pages, and the host can always mmap() 
a file there...

François.




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