Summary Tables of Changes
10 Specification Update
Errata (Sheet 1 of 4)
Number
Steppings
Status ERRATA
C-2 K-0
BG1 X X No Fix The Processor May Report a #TS Instead of a #GP Fault
BG2 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
BG3 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
BG4 X X No Fix
Performance Monitor SSE Retired Instructions May Return
Incorrect Values
BG5 X X No Fix
Premature Execution of a Load Operation Prior to Exception
Handler Invocation
BG6 X X No Fix MOV To/From Debug Registers Causes Debug Exception
BG7 X X No Fix
Incorrect Address Computed For Last Byte of FXSAVE/
FXRSTOR Image Leads to Partial Memory Update
BG8 X X No Fix
Values for LBR/BTS/BTM Will Be Incorrect after an Exit from
SMM
BG9 X X No Fix
Single Step Interrupts with Floating Point Exception Pending
May Be Mishandled
BG10 X X No Fix
Fault on ENTER Instruction May Result in Unexpected Values
on Stack Frame
BG11 X X No Fix
IRET under Certain Conditions May Cause an Unexpected
Alignment Check Exception
BG12 X X No Fix
General Protection Fault (#GP) for Instructions Greater than
15 Bytes May Be Preempted
BG13 X X No Fix
General Protection (#GP) Fault May Not Be Signaled on Data
Segment Limit Violation above 4-G Limit
BG14 X X No Fix
LBR, BTS, BTM May Report a Wrong Address When an
Exception/Interrupt Occurs in 64-bit Mode
BG15 X X No Fix
MONITOR or CLFLUSH on the Local XAPIC's Address Space
Results in Hang
BG16 X X No Fix
Corruption of CS Segment Register during RSM While
Transitioning from Real Mode to Protected Mode
BG17 X X No Fix
Performance Monitoring Events for Read Miss to Level 3
Cache Fill Occupancy Counter May Be Incorrect
BG18 X X No Fix
Performance Monitor Event SEGMENT_REG_LOADS Counts
Inaccurately
BG19 X X No Fix
#GP on Segment Selector Descriptor That Straddles
Canonical Boundary May Not Provide Correct Exception Error
Code
BG20 X X No Fix
Improper Parity Error Signaled in the IQ Following Reset
When a Code Breakpoint Is Set on a #GP Instruction
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