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Some ia64 systems produce several repeats of kernel messages like this: kernel unaligned access to 0xe000000644220466, ip=0xa000000100516fa1 This was tracked to ide code using the __cmd[] field in "struct request" via the __outsw() function. __cmd[] is a char array, so is not guaranteed to be properly aligned when accessed as words. Tested-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Tony Luck <tony.luck@intel.com>