Specifications

Product Errata 85
Revision Guide for AMD Athlon™ 64 and AMD Opteron™ Processors
25759 Rev. 3.79 July 2009
136 INVLPG Instruction in 16-bit Mode May Not Invalidate the
Translation Requested
Description
When INVLPG is executed in 16-bit mode without an address size prefix it will not invalidate the
requested translation in the TLB. This can result in the possible use of stale translations even after
software has performed an INVLPG.
Potential Effect on System
Unpredictable system behavior.
Suggested Workaround
Software should use a 32-bit addressing mode to create 16-bit addresses for invalidation.
Fix Planned
Yes