We encountered a problem with the handling of misaligned operations. When
handling a misaligned 'stfX' instruction, the kernel uses the function
emulate_store_float( ), which practically copies the source to destination
byte by byte. The length of the operation is determined according to the
instruction's fsz completer, using the float_fsz table:

static const unsigned char float_fsz[4]={
	16, /* extended precision (e) */
	8,  /* integer (8)            */
	4,  /* single precision (s)   */
	8   /* double precision (d)   */
}

The problem is that fsz==e means the operation length is 10 bytes, and not
16 bytes as in the implementation. Attached is a small test case that
demonstrates this problem.

My questions are:
*	Is there a rationale behind this implementation, or is it just a
mistake ?
*	If it is a mistake, was it corrected in kernel versions later than
2.4.3 ? 

 <<mis64.c>> 
TIA,
Yoav.

Yoav Zach
Mail:        yoav.zach@intel.com