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    SubjectRe: Question on memory mapping
    > Ultimately what I want to achieve is I want to map the user allocated
    > memory to the kernel (sort of reverse operation done by mmap). So, after
    > getting the physical address, will allocating a virtual page and mapping
    > that virtual page to the physical page of the user address do the job? If
    > not, how should I do the mapping?

    By mmapping kerne memory into user space. Or with 2.3.x the kiovec stuff
    provides the basis of what you need.

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