what is the kernel symbol for user space grant access driver

[Tapas Mishra]

Hi,
I want to know with respect to an image here
http://bderzhavets.files.wordpress.com/2010/04/pv-2-6-32-12.png
I have already compiled a kernel
it mentions to enable  "user space grant access driver"
While compiling I did not notice it how can I now verify post compile
some symbol CONFIG_*
which can tell me if I included it?
How can I find out can such a thing be looked some where in .config file?

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