* /dev/raw and /dev/mem
@ 2003-06-02 20:32 sridhar vaidyanathan
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From: sridhar vaidyanathan @ 2003-06-02 20:32 UTC (permalink / raw)
To: linux-kernel
I attempetd to transfer data from a raw char device to a buffer allocated by
mmaping /dev/mem. But the operation failed with 'Bad Address'.Upon a bit of
investigation I found that VM_IO flag is set in the mmaped pages.get_user_pages
() which is called by the raw character driver doesn't like this.I am not very
clear about the reason.
Is it not possible to do this?
-sridhar
ps: email me as i am not subscribed.
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2003-06-02 20:32 /dev/raw and /dev/mem sridhar vaidyanathan
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