AMD 6 manual Products Affected. A0, A2

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Preliminary Information

24332E— December 2002

AMD Athlon™ Processor Model 6 Revision Guide

16INVLPG Instruction Does Not Flush Entire Four-Megabyte Page Properly with Certain Linear Addresses

Products Affected. A0, A2

Normal Specified Operation. After executing an INVLPG instruction the TLB should not contain any translations for any part of the page frame associated with the designated logical address.

Non-conformance.When the logical address designated by the INVLPG instruction is mapped by a 4- Mbyte page mapping and LA[21] is equal to one it is possible that the TLB will still retain translations after the instruction has finished executing.

Potential Effect on System. The residual data in the TLB can result in unexpected data access to stale or invalid pages of memory.

Suggested Workaround. When using the INVLPG instruction in association with a page that is mapped via a 4-Mbyte page translation, always clear bit 21.

Resolution Status. Fix planned for a future revision.

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Contents Revision Guide 2001, 2002 Advanced Micro Devices, Inc AMD Athlon Processor Model 6 Revision Guide Revision HistoryAMD Athlon Processor Model Revision Guide Product Errata Errata Products Affected. A0, A2 Resolution Status. No fix planned Preliminary Information Products Affected. A5 Sfence Products Affected. A0, A2, A5Preliminary Information Preliminary Information Potential Effect on System. System failure Single Step Across I/O SMI Skips One Debug Trap Revision Determination Technical and Documentation Support

6 specifications

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