Summary Tables of Changes
12
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
AK26 X X No Fix
Premature Execution of a Load Operation Prior to Exception
Handler Invocation
AK27 X X No Fix
General Protection (#GP) Fault May Not Be Signaled on
Data Segment Limit Violation above 4-G Limit
AK28 X X No Fix EIP May be Incorrect after Shutdown in IA-32e Mode
AK29 X X No Fix
#GP Fault is Not Generated on Writing IA32_MISC_ENABLE
[34] When Execute Disable Bit is Not Supported
AK30 X Fixed
(E)CX May Get Incorrectly Updated When Performing Fast
String REP MOVS or Fast String REP STOS With Large Data
Structures
AK31 X Fixed
Performance Monitoring Events for Retired Loads (CBH) and
Instructions Retired (C0H) May Not Be Accurate
AK32 X X No Fix
Upper 32 bits of ‘From’ Address Reported through BTMs or
BTSs May be Incorrect
AK33 X Fixed
Unsynchronized Cross-Modifying Code Operations Can
Cause Unexpected Instruction Execution Results
AK34 X X No Fix
MSRs Actual Frequency Clock Count (IA32_APERF) or
Maximum Frequency Clock Count (IA32_MPERF) May
Contain Incorrect Data after a Machine Check Exception
(MCE)
AK35 X X No Fix
Incorrect Address Computed For Last Byte of
FXSAVE/FXRSTOR Image Leads to Partial Memory Update
AK36 X X No Fix
Split Locked Stores May not Trigger the Monitoring
Hardware
AK37 X Fixed
REP CMPS/SCAS Operations May Terminate Early in 64-bit
Mode when RCX >= 0X100000000
AK38 X Fixed
FXSAVE/FXRSTOR Instructions which Store to the End of the
Segment and Cause a Wrap to a Misaligned Base Address
(Alignment <= 0x10h) May Cause FPU Instruction or
Operand Pointer Corruption
AK39 X Fixed
Cache Data Access Request from One Core Hitting a
Modified Line in the L1 Data Cache of the Other Core May
Cause Unpredictable System Behavior
AK40 X Fixed
PREFETCHh Instruction Execution under Some Conditions
May Lead to Processor Livelock
AK41 X Fixed
PREFETCHh Instructions May Not be Executed when
Alignment Check (AC) is Enabled
AK42 X Fixed
Upper 32 Bits of the FPU Data (Operand) Pointer in the
FXSAVE Memory Image May Be Unexpectedly All 1’s after
FXSAVE
AK43 X Fixed
Concurrent Multi-processor Writes to Non-dirty Page May
Result in Unpredictable Behavior
AK44 X Fixed
Performance Monitor IDLE_DURING_DIV (18h) Count May
Not be Accurate
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