Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1575

LOCK—Assert LOCK# Signal Prefix (Continued)
Real Address Mode Exceptions
#UD
Virtual 8086 Mode Exceptions
#UD
Volume 4: Base IA-32 Instruction Reference
If the LOCK prefix is used with an instruction not listed in the
"Description" section above. Other exceptions can be generated by
the instruction that the LOCK prefix is being applied to.
If the LOCK prefix is used with an instruction not listed in the
"Description" section above. Other exceptions can be generated by
the instruction that the LOCK prefix is being applied to.
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