Datasheet
Intel
®
Xeon
®
Processor C5500/C3500 Series
February 2010 Datasheet, Volume 1
Order Number: 323103-001 405
Reliability, Availability, Serviceability (RAS)
B5
Potential spurious
CRC error on L0s/
L1 exit
1
In the event CRC errors are
detected by link layer during
L0s/L1 exit, it will be logged as
“Potential spurious CRC error on
L0s/L1 exit”. IIO processes and
responds the cycle as normal.
FERR/NERR is logged in Intel
®
QPI and Global Non-
Fatal Error Log Registers and Intel
®
QPI Link layer
register:
QPINFERRST
QPINNERRST
GNERRST
GNFERRST
GNFERRTIME
GNNERRST
C1
Intel
®
QPI
Protocol Layer
Received Poisoned
packet
1
Intel
®
QPI to PCIe write: IIO
returns normal response to
Intel
®
QPI and forwards
poisoned data to PCIe.
Intel
®
QPI to IIO write: IIO
returns normal response to
Intel
®
QPI and drops the write
data.
PCIe to Intel
®
QPI read: IIO
forwards the poisoned data to
PCIe
IIO to Intel
®
QPI read: IIO drops
the data.
IIO to Intel
®
QPI read for RFO:
IIO completes the write. If the
bad data chunk is not
overwritten, IIO corrupts write
cache ECC to indicate the stored
data chunk (64-bit) is poisoned.
FERR/NERR is logged in Intel
®
QPI and Global Non-
Fatal Error Log Registers:
QPIPNFERRST
QPIPNFERRHD
QPIPNNERRST
GNERRST
GNFERRST
GNFERRTIME
GNNERRST
Intel
®
QPI header is logged
C2
IIO Write Cache
uncorrectable Data
ECC error
1
Write back includes poisoned
data.
FERR/NERR is logged in Intel
®
QPI and Global Fatal
Error Log Registers:
QPIPFNFERRST
QPIPFNERRST
GNERRST
GFFERRST
GFFERRTIME
GFNERRST
C3
IIO CSR access
crossing 32-bit
boundary.
1
Intel
®
QPI read: IIO returns all
‘1s’ and normal response to
Intel
®
QPI to indicate master
abort.
Intel
®
QPI write: IIO returns
normal response and drops the
write
FERR/NERR is logged in IIO Core and Global Non-
Fatal Error Log Registers:
QPIPNFERRST
QPIPNFERRHD
QPIPNNERRST
GNERRST
GNFERRST
GNFERRTIME
GNNERRST
Intel
®
QPI header is logged
Table 129. IIO Error Summary (Sheet 12 of 15)
ID Error
Default
Error
Severity
Transaction Response Default Error Logging
1