AMD Phenom 8650 Triple-Core HD8650WCGHBOX User Manual
Product codes
HD8650WCGHBOX
Product Errata
41
Revision Guide for AMD Family 10h Processors
41322
Rev. 3.16
February 2008
301 Performance Counters Do Not Accurately Count MFENCE or
SFENCE Instructions
Description
MFENCE and SFENCE instructions are not accurately counted by the performance monitor when
MSRC001_000[3:0][7:0] (EventSelect) is 1D4h, or 1D5h.
MSRC001_000[3:0][7:0] (EventSelect) is 1D4h, or 1D5h.
Potential Effect on System
Performance monitoring software will not be able to count MFENCE and SFENCE instructions.
Suggested Workaround
None.
Fix Planned
Yes