Summary Tables of Changes
14
Intel
®
Core™2 Extreme Quad-Core Processor QX6000
Δ
Sequence and Intel
®
Core™2 Quad Processor Q6000
Δ
Sequence
Specification Update
NO B3 G0 Plan ERRATA
AK68 X X No Fix
Performance Monitoring Event FP_ASSIST May Not be
Accurate
AK69 X Fixed
CPL-Qualified BTS May Report Incorrect Branch-From
Instruction Address
AK70 X Fixed
PEBS Does Not Always Differentiate Between CPL-Qualified
Events
AK71 X X No Fix PMI May Be Delayed to Next PEBS Event
AK72 X Fixed
PEBS Buffer Overflow Status Will Not be Indicated Unless
IA32_DEBUGCTL[12] is Set
AK73 X X No Fix
The BS Flag in DR6 May be Set for Non-Single-Step #DB
Exception
AK74 X X No Fix
An Asynchronous MCE During a Far Transfer May Corrupt
ESP
AK75 X 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
AK76 X X No Fix
B0-B3 Bits in DR6 May Not be Properly Cleared After Code
Breakpoint
AK77 X X No Fix
BTM/BTS Branch-From Instruction Address May be Incorrect
for Software Interrupts
AK78 X X No Fix
Last Branch Records (LBR) Updates May be Incorrect After a
Task Switch
AK79 X Fixed
REP Store Instructions in a Specific Situation may cause the
Processor to Hang
AK80 X X No Fix
Performance Monitoring Events for L1 and L2 Miss May Not
be Accurate
AK81 X X No Fix
Store to WT Memory Data May be Seen in Wrong Order by
Two Subsequent Loads
AK82 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
AK83 X Fixed
CPUID Reports Architectural Performance Monitoring Version
2 is Supported, When Only Version 1 Capabilities are
Available
AK84 X X No Fix
Single Step Interrupts with Floating Point Exception Pending
May Be Mishandled
AK85 X X No Fix
Non-Temporal Data Store May be Observed in Wrong
Program Order
AK86 X X No Fix
Performance Monitor SSE Retired Instructions May Return
Incorrect Values
AK87 X X No Fix
Fault on ENTER Instruction May Result in Unexpected Values
on Stack Frame