673
Misaligned
Page
Crossing
String
Operations
May
Cause
System
Hang
Description
A
misaligned
Move
String
or
Store
String
instruction
with
a
REP
prefix
that
crosses
a
page
boundary
may
cause
a
system
hang
.
This
may
occur
when
the
TLB
entry
for
the
leading
page
is
evicted
while
the
string
operation
is
executing
,
or
the
trailing
page
of
the
string
operation
crosses
into
a
large
page
(1
GB
or
2
MB
)
which
requires
an
address
translation
due
to
a
TLB
miss
.
Potential
Effect
on
System
Unpredictable
system
behavior
,
likely
leading
to
a
system
hang
.
Suggested
Workaround
Contact
your
AMD
representative
for
information
on
a
BIOS
update
.
Fix
Planned
Yes
48063
Rev
. 3.18
October
2012
Revision
Guide
for
AMD
Family
15
h
Models
00
h-
0
Fh
Processors
Product
Errata
59