Summary Tables of Changes
8
Specification Update
AAZ
Errata (Sheet 1 of 5)
Number
Steppings
Status ERRATA
C-2 K-0
AAZ1 X X No Fix The Processor May Report a #TS Instead of a #GP Fault
AAZ2 X X No Fix
REP MOVS/STOS Executing with Fast Strings Enabled and
Crossing Page Boundaries with Inconsistent Memory Types May
Use an Incorrect Data Size or Lead to Memory-Ordering
Violations
AAZ3 X X No Fix
Code Segment Limit/Canonical Faults on RSM May Be Serviced
before Higher Priority Interrupts/Exceptions and May Push the
Wrong Address onto the Stack
AAZ4 X X No Fix
Performance Monitor SSE Retired Instructions May Return
Incorrect Values
AAZ5 X X No Fix
Premature Execution of a Load Operation Prior to Exception
Handler Invocation
AAZ6 X X No Fix MOV To/From Debug Registers Causes Debug Exception
AAZ7 X X No Fix
Incorrect Address Computed For Last Byte of FXSAVE/FXRSTOR
Image Leads to Partial Memory Update
AAZ8 X X No Fix
Values for LBR/BTS/BTM Will Be Incorrect after an Exit from
SMM
AAZ9 X X No Fix
Single Step Interrupts with Floating Point Exception Pending
May Be Mishandled
AAZ10 X X No Fix
Fault on ENTER Instruction May Result in Unexpected Values on
Stack Frame
AAZ11 X X No Fix
IRET under Certain Conditions May Cause an Unexpected
Alignment Check Exception
AAZ12 X X No Fix
General Protection Fault (#GP) for Instructions Greater than 15
Bytes May Be Preempted
AAZ13 X X No Fix
General Protection (#GP) Fault May Not Be Signaled on Data
Segment Limit Violation above 4-G Limit
AAZ14 X X No Fix
LBR, BTS, BTM May Report a Wrong Address When an
Exception/Interrupt Occurs in 64-bit Mode
AAZ15 X X No Fix
MONITOR or CLFLUSH on the Local XAPIC's Address Space
Results in Hang
AAZ16 X X No Fix
Corruption of CS Segment Register during RSM While
Transitioning from Real Mode to Protected Mode
AAZ17 X X No Fix
Performance Monitoring Events for Read Miss to Level 3 Cache
Fill Occupancy Counter May Be Incorrect
AAZ18 X X No Fix
A VM Exit on MWAIT May Incorrectly Report the Monitoring
Hardware as Armed
AAZ19 X X No Fix
Performance Monitor Event SEGMENT_REG_LOADS Counts
Inaccurately
AAZ20 X X No Fix
#GP on Segment Selector Descriptor That Straddles Canonical
Boundary May Not Provide Correct Exception Error Code
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