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Doubt on mmap

To: linux-mips@linux-mips.org
Subject: Doubt on mmap
From: ashley jones <ashley_jones_2000@yahoo.com>
Date: Fri, 29 Dec 2006 02:23:51 -0800 (PST)
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hi,
         Can i "mmap" a physical memory region (part of dram) not given to linux, using remap_pfn_range ? During booting instead of giving whole available memory to linux i have reserved around 10 MB which i use as a shared memory between driver and user space application. Can i pass this pfn no. to remap_pfn_range to get the mapping done for user space application?

Thanks,
Ashley.

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