參數(shù)資料
型號: 25759
英文描述: Revision Guide for AMD Athlon 64? and AMD Opteron? Processors
中文描述: 修訂指南的AMD Athlon 64?和AMD Opteron?處理器
文件頁數(shù): 17/49頁
文件大小: 287K
代理商: 25759
Product Errata
17
Revision Guide for AMD Athlon 64 and AMD Opteron Processors
25759
Rev. 3.09
September 2003
62 Task Gates With Breakpoints Enabled May Cause Unexpected
Faults
Description
When a task gate is used by a CALL or JMP instruction and any debug breakpoint is enabled through
the DR7.LE or GE bits, the processor may incorrectly use the new TSS base [15:0] contained in the
new TSS as a selector. This will most likely lead to a GP fault with an error code of the new TSS base.
Potential Effect on System
Unexpected faults leading to unpredictable system failure.
Suggested Workaround
When running software that uses task gates with CALL or JMP instructions, do not enable debug
breakpoints.
Fix Planned
Yes
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