693
Performance
Counter
May
Incorrectly
Count
MXCSR
Loads
Description
The
processor
may
incorrectly
increment
the
following
performance
counter
due
to
XRSTOR
,
FXRSTOR
,
LDMXCSR
or
VLDMXCSR
instructions
loading
the
MXCSR
register
:
•
PMCx
003 (
Retired
Floating
Point
Ops
)
Potential
Effect
on
System
Performance
monitoring
software
will
not
have
an
accurate
count
of
the
number
of
retired
floating
point
operations
reported
by
the
above
performance
counter
.
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
66
Product
Errata