From: Arvind Gopalan <arvind_gopalan@yahoo.com>
Date: Sat, 28 Sep 2002 23:26:46 -0700 (PDT)
how strong the requirements are for copy_to_user().
does it fault to byte-by-byte mode gracefully when
given a non-4byte aligned buffer?.
The x86 processor handles unaligned memory accesses in hw.
On any platform, copy_to_user() must handle any user and kernel buffer
alignment.
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