586
A
Far
Control
Transfer
Changing
Processor
Operating
Mode
May
Generate
a
False
Machine
Check
Description
A
far
control
transfer
that
changes
the
processor
operating
mode
may
erroneously
indicate
a
decoder
instruction
buffer
parity
error
(
DEIBP
)
machine
check
,
leading
to
a
system
shutdown
.
The
extended
error
code
logged
in
the
IF
Machine
Check
Status
register
indicates
a
decode
instruction
buffer
error
(
MSR
0000_0405[20:16] = 10010
b
).
Potential
Effect
on
System
Machine
check
exception
due
to
a
decoder
instruction
buffer
parity
error
leading
to
system
shutdown
.
Suggested
Workaround
BIOS
should
set
MSRC
001_0045[18] = 1
b
(
MC
1_
CTL
_
MASK
[
DEIBP
]).
Fix
Planned
Yes
Revision
Guide
for
AMD
Family
15
h
Models
00
h-
0
Fh
Processors
48063
Rev
. 3.18
October
2012
36
Product
Errata