A query on frame buffers

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Hello All,

This is probably my first mail on this mailing list. I am working on a
university project on Nvidia or any GPU Pass-through in KVM. I have a
question related to framebuffer.

I was reading few documents on XEN VGA pass-through, the document says
the first step for pass-through is mapping the framebuffers in the VM
at specific address, specifically speaking 0xA0000 till 0xC0000.

I am not sure how the new framebuffer interface /dev/fbn works. Would
I need to map the host framebuffer at specific address in the Guest
VM?
Or should it be done differently with the help of /dev/fbn interface?

Please share your thoughts. Any pointers will be helpful. Please add
in CC as I am not subscribed to this mailing list.

Thanks and Regards,
Prasad
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