Filter
Top Products
Release 1.0, 1 July 2002 F. Chapter F Memory Management Unit 101
Data <46> MK R/W Marked
UE
. On SPARC64 V, all uncorrectable errors are reported as
marked, so this bit is always set whenever DSFSR.UE =1.
See Section P.2.4 for details.
Data <45:32> EID R/W Error-mark ID. Valid for a marked
UE
.
See Section P.2.4 for details about ERROR_MARK_ID.
Data <31> UE R/W Operand access error status. Uncorrectable error. When UE = 1, it signifies
an occurrence of an uncorrectable error in an operand fetch reference. Valid
only for a
data_access_error
exception.
Data - <30:29> UPA<1:0> R/W UPA error status. Either a bus error response (UPA<1>) or a timeout
response (UPA<0>) has been received from an operand fetch transaction
from UPA. Valid only for a
data_access_error
exception.
Data <27:26> mDTLB<1:0> R/W mDTLB error status. Either a multiple-hit status (mDTLB<1>) or a parity
error status (mDTLB<0>) has been encountered upon a mDTLB lookup.
Valid only for a
data_access_error
exception.
Data <25> NC R/W Noncacheable reference. The reference that invoked an exception is a non-
cacheable reference. This field indicates that the faulty reference is a non-
cacheable operand access. Valid only for an
data_access_error
exception
caused by DSFSR.UE or DSFSR.UPA. For other causes of the trap, the
value is unknown.
Data <24> NF R/W Nonfaulting load. The instruction which generated the exception was a
nonfaulting load instruction.
Data <23:16> ASI<7:0> R/W ASI. The 8-bit address space identifier applied to the reference that has
invoked an exception. This field is valid for the exception in which the
DSFSR.FV bit is set. When the reference does not specify an ASI, the
reference is regarded as with an implicit ASI and a recorded ASI is as
follows:
TL = 0, PSTATE.CLE =0 80
16
(ASI_PRIMARY)
TL = 0, PSTATE.CLE =1 88
16
(ASI_PRIMARY_LITTLE)
TL > 0, PSTATE.CLE =0 04
16
(ASI_NUCLEUS)
TL > 0, PSTATE.CLE =1 0C
16
(ASI_NUCLEUS_LITTLE)
Data <15> TM R/W Translation miss. When TM = 1, it signifies an occurrence of a mDTLB miss
upon an operand reference.
Data <13:7> FT<6:0> R/W Fault type. Saves and indicates an exact condition that caused the recorded
exception. The encoding of this field is described in
TABLE F-9
.
Data <6> E R/W Side-effect page. Associated with faulting data access. The reference is mapped to
the translation with an E bit set, or the ASI for the reference was either 015
16
or
01D
16
. Valid only for an
data_access_error
exception caused by DSFSR.UE
or DSFSR.UPA. For other causes of the trap, the value is unknown.
TABLE F-8
D-SFSR Bit Description (2 of 3)
Bits Field Name RW Description