Intel 253668-032US User Manual

Vol. 3 15-35

MACHINE-CHECK ARCHITECTURE

15-9). Their values and compound encoding format are given in Table

15-15.

Table 15-16 lists values of relevant bit fields of IA32_MCi_STATUS for archi-

tecturally defined SRAO errors.

For both the memory scrubbing and L3 explicit writeback errors, the ADDRV

and MISCV flags in the IA32_MCi_STATUS register are set to indicate that

the offending physical address information is available from the

IA32_MCi_MISC and the IA32_MCi_ADDR registers. For the memory scrub-

bing and L3 explicit writeback errors, the address mode in the

IA32_MCi_MISC register should be set as physical address mode (010b) and

the address LSB information in the IA32_MCi_MISC register should indicate

the lowest valid address bit in the address information provided from the

IA32_MCi_ADDR register.
An MCE signal is broadcast to all logical processors on the system on which

the UCR errors are supported. MCi_STATUS banks can be shared by logical

processors within a core or within the same package. So several logical

processors may find an SRAO error in the shared IA32_MCi_STATUS bank

but other processors do not find it in any of the IA32_MCi_STATUS banks.

Table 15-17 shows the RIPV and EIPV flag indication in the

Table 15-15. MCA Compound Error Code Encoding for SRAO Errors

Type

MCACOD Value MCA Error Code Encoding

NOTES:

1. Note that for both of these errors the correction report filtering (F) bit (bit 12) of the MCA error is

0, indicating "normal" filtering.

Memory Scrubbing

0xC0 - 0xCF

0000_0000_1100_CCCC
000F 0000 1MMM CCCC (Memory Controller Error), where
Memory subfield MMM = 100B (memory scrubbing)
Channel subfield CCCC = channel # or generic

L3 Explicit Writeback 0x17A

0000_0001_0111_1010
000F 0001 RRRR TTLL (Cache Hierarchy Error) where
Request subfields RRRR = 0111B (Eviction)
Transaction Type subfields TT = 10B (Generic)
Level subfields LL = 10B

Table 15-16. IA32_MCi_STATUS Values for SRAO Errors

SRAO Error

Valid

OVER UC EN MISCV ADDRV PCC S AR MCACOD

Memory Scrubbing

1 0

0xC0-0xCF

L3 Explicit Writeback 1

1 0

0x17A