22
Intel
®
Xeon
®
Processor Specification Update
Summary Table of Changes
Errata (Sheet 1 of 4)
No.
C1/
0F0Ah
D0/
0F12h
B0/
0F24h
C1/
0F27h
D1/
0F29h
M0/
0F25h
L0/
0F29h
Plans
Errata
P1
X
X
Fixed
UC Code in same line as write back (WB) data may
lead to data corruption
P2
X
X
X
X
X
X
X
No Fix
Transaction is not retried after BINIT#
P3
X
X
X
X
X
X
X
No Fix
Invalid opcode 0FFFh requires a ModRM byte
P4
X
X
X
X
X
X
X
No Fix
When in no-fill mode (CR0.CD=1) the memory type
of large (PSE-4M and PAE-2M) pages are wrongly
forced to uncacheable
P5
X
X
X
X
X
X
X
No Fix
Processor may hang due to speculative page
walks to nonexistent system memory
P6
X
X
Fixed
Writing a performance counter may result in an
incorrect counter value
P7
X
X
Fixed
Performance counter may contain incorrect value
after being stopped
P8
X
Fixed
REP MOV instruction with overlapping source and
destination may result in data corruption
P9
X
X
X
X
X
X
X
No Fix
Memory type of the load lock different from its
corresponding store unlock
P10
X
X
X
X
X
X
X
No Fix
Machine check architecture error reporting and
recovery may not work as expected
P11
X
X
X
X
X
X
X
No Fix
Debug mechanisms may not function as expected
P12
X
Fixed
Processor may live-lock if PDEs or PTEs are in UC
space
P13
X
Fixed
Thermal status log bit may not be set when the
thermal control circuit is active
P14
X
X
Fixed
Processor may timeout waiting for a device to
respond after 0.67 seconds
P15
X
X
X
X
X
X
X
No Fix
Cascading of performance counters does not work
correctly when forced overflow is enabled
P16
X
X
X
X
X
X
X
No Fix
EMON event counting of x87 loads may not work
as expected
P17
X
X
Fixed
Simultaneous code breakpoint and uncorrectable
error results in processor hang
P18
X
X
Fixed
Software controlled clock modulation using a
12.5% or 25% duty cycle may cause the processor
to hang
P19
X
Fixed
RFO with ECC error may result in incorrect data
P20
X
Fixed
Speculative page-fault may cause livelock
P21
X
Fixed
PAT index MSB may be calculated incorrectly
P22
X
X
X
X
X
X
X
No Fix
System bus interrupt messages without data and
which receive a Hard failure response may hang
the processor
P23
X
X
Fixed
SQRTPD and SQRTSD may return QNaN
indefinite instead of negative zero
P24
X
X
X
Fixed
Bus invalidate line requests that returns
unexpected data may result in L1 cache corruption
P25
X
Fixed
Multiprocessor boot protocol may not complete
with an IOQ depth of one