Specification Update

Summary Tables of Changes
16 Specification Update
Stepping Stepping Stepping
Number
E-1 M-0 G-0
Plans
ERRATA
AH60 X X X No Fix LBR, BTS, BTM May Report a Wrong Address when an
Exception/Interrupt Occurs in 64-bit Mode
AH61 X X X No Fix A Thermal Interrupt Is Not Generated when the Current
Temperature Is Invalid
AH62 X X X No Fix CMPSB, LODSB, or SCASB in 64-bit Mode with Count Greater or
Equal to 2
48
May Terminate Early
AH63 Removed Erratum
AH64 X X X No Fix Returning to Real Mode from SMM with EFLAGS.VM Set May Result
in Unpredictable System Behavior
AH65 Fixedv
VMLAUNCH/VMRESUME May Not Fail When VMCS Is Programmed
to Cause VM Exit to Return to a Different Mode
AH66 X X X No Fix IRET under Certain Conditions May Cause an Unexpected Alignment
Check Exception
AH67 X X X No Fix Performance Monitoring Event FP_ASSIST May Not Be Accurate
AH68 Fixed CPL-Qualified BTS May Report Incorrect Branch-From Instruction
Address
AH69 Fixed PEBS Does Not Always Differentiate Between CPL-Qualified Events
AH70 X X X No Fix PMI May Be Delayed to Next PEBS Event
AH71 Fixed PEBS Buffer Overflow Status Will Not Be Indicated Unless
IA32_DEBUGCTL[12] Is Set
AH72 X X X No Fix The BS Flag in DR6 May Be Set for Non-Single-Step #DB Exception
AH73 X X X No Fix An Asynchronous MCE during a Far Transfer May Corrupt ESP
AH74 Fixed In Single-Stepping on Branches Mode, the BS Bit in the Pending-
Debug-Exceptions Field of the Guest State Area Will Be Incorrectly
Set by VM Exit on a MOV to CR8 Instruction
AH75 X X X No Fix B0-B3 Bits in DR6 May Not Be Properly Cleared after Code
Breakpoint
AH76 X X X No Fix BTM/BTS Branch-From Instruction Address May Be Incorrect for
Software Interrupts
AH77 Fixed REP Store Instructions in a Specific Situation May Cause the
Processor to Hang
AH78 X X X No Fix Performance Monitor SSE Retired Instructions May Return Incorrect
Values
AH79 X X X No Fix Performance Monitoring Events for L1 and L2 Miss May Not Be
Accurate
AH80 X X X No Fix Store to WT Memory Data May Be Seen in Wrong Order by Two
Subsequent Loads
AH81 X X X No Fix A MOV Instruction from CR8 Register with 16-Bit Operand Size Will
Leave Bits 63:16 of the Destination Register Unmodified