685
Some
Processor
Cores
May
Have
Inaccurate
Instruction
Cache
Fetch
Performance
Counter
Description
The
processor
may
over-report
PMCx
080 (
instruction
cache
fetches
)
when
the
performance
monitor
is
enabled
on
an
odd
processor
core
number
(
APIC
20[
ApicId
]
is
odd
-
i
.
e
.
bit
24
is
1
b
),
as
compared
to
when
the
performance
counter
is
used
on
an
even
processor
core
number
.
Potential
Effect
on
System
Performance
monitoring
software
may
not
have
an
accurate
count
of
instruction
cache
fetch
operations
.
The
performance
counter
may
overcount
.
Suggested
Workaround
None
.
Fix
Planned
No
fix
planned
Revision
Guide
for
AMD
Family
15
h
Models
00
h-
0
Fh
Processors
48063
Rev
. 3.18
October
2012
62
Product
Errata