Intel E7-8891 v2 CM8063601377422 Manuale Utente

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

115

Datasheet Volume Two: Functional Description, February 2014

31:31

RW_L

0x0

Scrub Enable (scrub_en):

Scrub Enable when set.

30:30

RW

0x0

Stop on complete (stop_on_cmpl):

Stop patrol scrub at end of memory range. This mode is meant to be used as 

part of memory migration flow. SMI is signalled by default

29:29

RW_V

0x0

patrol range complete (ptl_cmpl):

When stop_on_cmpl is enabled, patrol will stop at the end of the address range 

and set this bit.
Patrol will resume from beginning of address range when this bit or 

stop_on_cmpl is cleared by BIOS and patrol scrub is still enabled by scrub_en.

28:28

RW

0x0

Stop on error (stop_on_err):

Stop patrol scrub on poison or uncorrectable. On poison, patrol will log error 

then stop. On uncorr, patrol will convert to poison (if enabled) then stop.
This mode is meant to be used as part of memory migration flow. SMI is 

signalled by default.

27:27

RW_V

0x0

patrol stopped (ptl_stopped):

When stop_on_err is set, patrol will stop on error and set this bit.
Patrol will resume at the next address when this bit or stop_on_err is cleared 

by BIOS and patrol scrub is still enabled by scrub_en.

26:26

RW_V

0x0

SCRUBISSUED (scrubissued):

When Set, the scrub address registers contain the last scrub address issued

25:25

RW

0x0

ISSUEONCE (issueonce):

When Set, the patrol scrub engine will issue the address in the scrub address 

registers only once and stop.

24:24

RW_V

0x0

STARTSCRUB (startscrub):

When Set, the Patrol scrub engine will start from the address in the scrub 

address registers. Once the scrub is issued this bit is reset.

23:0

RW

0x0

SCRUBINTERVAL (scrubinterval):

Defines the interval in DCLKS between patrol scrub requests. 
The calculation for this register to get a scrub to every line in 24 hours is: ( 

(36400))/ (memory capacity/64))/cycle time of DCLK. 
RESTRICTIONS: Can only be changed when patrol scrubs are disabled.