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Summary Tables of Changes
20 Specification Update
ID
Processor Line / Stepping
Status Title
Y U H S X
H0 H0
3
H0 H0
3
J1
23e
Y0
42
B0 B0/
S0
B0
KBL018 X X X X X X X X X No Fix
PEBS Eventing IP Field May be Incorrect After Not-
Taken Branch
KBL019 X X X X X X X X X No Fix
Debug Exceptions May Be Lost or Misreported
Following WRMSR to IA32_BIOS_UPDT_TRIG
KBL020 X X X X X X X X No Fix
Complex Interactions With Internal Graphics May
Impact Processor Responsiveness
KBL021 X X X X X X X X X No Fix
Intel® Processor Trace PSB+ Packets May Contain
Unexpected Packets
KBL022 X X X X X X X X X No Fix
Placing an Intel® PT ToPA in Non-WB Memory or
Writing It Within a Transactional Region May Lead to
System Instability
KBL023 X X X X X X X X X No Fix VM Entry That Clears TraceEn May Generate a FUP
KBL024 X X X X X X X X X No Fix
Performance Monitor Event For Outstanding Offcore
Requests And Snoop Requests May be Incorrect
KBL025 X X X X X X X X X No Fix ENCLU[EGETKEY] Ignores KEYREQUEST.MISCMASK
KBL026 X X X X X X X X X No Fix
POPCNT Instruction May Take Longer to Execute Than
Expected
KBL027 X X X X X X X X No Fix
ENCLU[EREPORT] May Cause a #GP When
TARGETINFO.MISCSELECT is Non-Zero
KBL028 X X X X X X X X X No Fix
A VMX Transition Attempting to Load a Non-Existent
MSR May Result in a Shutdown
KBL029 X X X X X X X X X No Fix
Transitions Out of 64-bit Mode May Lead to an
Incorrect FDP And FIP
KBL030 X X X X X X X X X No Fix Intel® PT FUP May be Dropped After OVF
KBL031 X X X X X X X X No Fix
ENCLS[ECREATE] Causes #GP if Enclave Base
Address is Not Canonical
KBL032 X X X X X X X X No Fix
Processor Graphics IOMMU Unit May Report Spurious
Faults
KBL033 X X X X X X X X X No Fix
Processor DDR VREF Signals May Briefly Exceed
JEDEC Spec When Entering S3 State
KBL034 X X X X X X X X X No Fix
DR6.B0-B3 May Not Report All Breakpoints Matched
When a MOV/POP SS is Followed by a Store or an
MMX Instruction
KBL035 X X X X X X X X No Fix ENCLS[EINIT] Instruction May Unexpectedly #GP
KBL036 X X X X X X X X X No Fix
Intel® PT OVF Packet May be Lost if Immediately
Preceding a TraceStop
KBL037 X X X X X X X X X No Fix
WRMSR to IA32_BIOS_UPDT_TRIG May be Counted
as Multiple Instructions