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Intel SL6NQ - Xeon 2.4 GHz/533MHz/512 KB CPU Processor 2.4GHz, Спецификация

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34

Intel

® 

Xeon

® 

 Processor Specification Update

Errata

corrected page tables are left in a non-accessed or non-modified state) the processor may livelock. 
Intel has not been able to reproduce this erratum with commercial software.

Implication:

This erratum occurs in systems where page tables are being modified by other processors. If this 
erratum is encountered, the processor will livelock resulting in a system hang or operating system 
failure.

Workaround:

It is possible for the BIOS to contain a workaround for this erratum.

Status:

For the steppings affected, see the 

Summary Table of Changes

.

P21

PAT index MSB may be calculated incorrectly

Problem:

When Mode B or Mode C paging support is enabled and all of the following events occur:

•

A page walk returns the page directory entry (PDE) for a large page from memory.

•

A subsequent page walk returns the page table entry (PTE) for a 4k page from memory and the 
page attribute table (PAT) upper index bit in this PTE is set to 1b.

It is possible that the PAT upper index bit in the PTE is incorrectly ignored and assumed to be 
0b. The result is that the memory type in the PAT that should have come from the 
corresponding PAT index [4-7] incorrectly comes from PAT index [0-3].

Implication:

If an operating system has programmed the PAT in an asymmetrical fashion i.e. PAT[0-3] is 
different from PAT[4-7] then an incorrect memory type may be used.

Workaround:

None at this time.

Status:

For the steppings affected, see the 

Summary Table of Changes

.

P22

System bus interrupt messages without data and which receive a Hard 
failure response may hang the processor

Problem:

When a system bus agent (processor or chipset) issues an interrupt transaction without data onto 
the system bus and the transaction receives a HardFailure response, a potential processor hang can 
occur. The processor, which generates an inter-processor interrupt (IPI) that receives the 
HardFailure response, will still log the MCA error event cause as HardFailure, even if the APIC 
causes a hang. Other processors, which are true targets of the IPI, will also hang on 
hardfail-without-data, but will not record an MCA HardFailure event as the cause. If a HardFailure 
response occurs on a system bus interrupt message with data, the APIC will complete the operation 
so as not to hang the processor.

Implication:

The processor may hang.

Workaround:

None at this time.

Status:

For the steppings affected, see the 

Summary Table of Changes

.

P23

SQRTPD and SQRTSD may return QNaN indefinite instead of negative zero

Problem:

When DAZ mode is enabled, and a 

SQRTPD

 or 

SQRTSD

 instruction has a negative denormal 

operand, the instruction will return a QNaN indefinite when the specified response should be zero.

Implication:

When this erratum occurs, the instruction will return a QNaN indefinite when a zero is expected.

Workaround:

Ensure that negative denormals are not used as operands to the 

SQRTPD

 or 

SQRTSD

 instructions 

when DAZ mode is enabled. Software could enable FTZ mode to ensure that negative denormals 
are not generated by computation prior to execution of the 

SQRTPD

 or 

SQRTSD

 instructions.

Status:

For the steppings affected, see the 

Summary Table of Changes

.

Содержание SL6NQ - Xeon 2.4 GHz/533MHz/512 KB CPU Processor 2.4GHz

Страница 1: ...Document Number 249678 057 Notice The Intel Xeon processor may contain design defects or errors known as errata which may cause the product to deviate from published specifications Current characteri...

Страница 2: ...must not rely on the absence or characteristics of any features or instructions marked reserved or undefined Intel reserves these for future definition and shall have no responsibility whatsoever for...

Страница 3: ...on Update 3 Contents Revision History 5 Preface 9 Identification Information 10 Mixed Steppings in DP Systems 18 Summary Table of Changes 20 Errata 27 Specification Changes 51 Specification Clarificat...

Страница 4: ...4 Intel Xeon Processor Specification Update...

Страница 5: ...test errata status Added Documentation Changes P1 P5 November 2001 009 Added errata P36 and P37 Added Documentation Change P6 Updated Summary Tables with latest errata and documentation changes Decemb...

Страница 6: ...Deleted old Documentation Changes Deleted old Specification Changes Added new Processor Intel Xeon Processor with 533 MHz Front Side Bus Added new processor with Processor Signature 0F27h C1 Step Adde...

Страница 7: ...dated erratum P65 November 2003 034 Added Specification Clarification P3 December 2003 035 Added new Processor Intel Xeon Processor with 2 MB L3 Cache with Processor Signature 0F25H M0 Stepping Februa...

Страница 8: ...ded s spec SL8TJ March 2006 053 Added S specs SL8TK SL8TL SL8SE and SL8TH April 2006 054 Updated Summary Table of Changes Updated the Software Developer Manual Name October 2006 055 Made changes to th...

Страница 9: ...rocessor s behavior to deviate from published specifications Hardware and software designed to be used with any given stepping must assume that all errata documented for that stepping are present on a...

Страница 10: ...INT mPGA Package Figure 1 Top Side Processor Marking Figure 2 Bottom Side Processor Marking Intel Xeon i m 01 D0096109 0032 2D Matrix OR Dynamic Laser Mark Area ATPO Mark 8 Characters Serial Number M...

Страница 11: ...oser INT mPGA Package and 604 pin Fc mPGA2 Package Figure 3 Top Side Processor Marking Figure 4 Bottom Side Processor Marking Intel Xeon i m c 02 2D Matrix Includes ATPO and Serial Number front end ma...

Страница 12: ...voltage Family1 1 The Family corresponds to bits 11 8 of the EDX register after RESET bits 11 8 of the EAX register after the Processor Signature instruction is executed with a 1 in the EAX register...

Страница 13: ...0 603 pin micro PGA interposer with 31 mm OLGA rev 2 0 1 2 4 SL56N C1 0F0Ah 1 70 400 256 KB B0 603 pin micro PGA interposer with 31 mm OLGA rev 2 0 1 4 SL56H C1 0F0Ah 1 70 400 256 KB B0 603 pin micro...

Страница 14: ...kage SL6JZ C1 0F27H 2 20 400 512 KB 01 603 pin micro PGA interposer with 35 mm FC BGA package 2 SL6EP C1 0F27H 2 40 400 512 KB 01 603 pin micro PGA interposer with 35 mm FC BGA package SL6K2 C1 0F27H...

Страница 15: ...7 SL6W3 SL6YS D1 0F29H 1 80 400 512 KB 01 603 pin micro PGA interposer with 35 mm FC BGA package 3 2 SL6W6 SL6YT D1 0F29H 2 400 512 KB 01 603 pin micro PGA interposer with 35 mm FC BGA package 3 2 SL...

Страница 16: ...533 512 KB 01 604 pin micro PGA interposer with 42 5 mm FC PGA2 package 2 SL73N SL72F M0 0F25H 2 80 533 512 KB 01 604 pin micro PGA interposer with 42 5 mm FC PGA2 package 2 SL73P SL72G M0 0F25H 3 06...

Страница 17: ...th 533 MHz Front Side Bus 6 These parts have a VID of 1 525V 7 These parts are the Low Voltage Intel Xeon Processor 8 These parts are the Intel Xeon Processor with 1 MB L3 Cache 9 These parts are the...

Страница 18: ...n customers may wish to perform validation of system configurations with mixed frequency or cache sizes and that those efforts are an acceptable option to our customers customers would be fully respon...

Страница 19: ...e Intel Xeon Processor Intel Xeon Processor with 1 MB L3 cache and Intel Xeon Processor with 2 MB L3 cache 3 This only applies to 0F25h stepping without L3 cache 4 This only applies to 0F25h stepping...

Страница 20: ...Intel Xeon processor substrate AP APIC related erratum Change bar to left of table row indicates this item is either new or modified from the previous version of this document Each Specification Updat...

Страница 21: ...ntel Pentium processor Extreme Edition and Intel Pentium D processor on 65 nm process AB Intel Pentium 4 processor on 65 nm process AC Intel Celeron Processor in 478 Pin Package AG Dual Core Intel Xeo...

Страница 22: ...X X X X X X X No Fix Debug mechanisms may not function as expected P12 X Fixed Processor may live lock if PDEs or PTEs are in UC space P13 X Fixed Thermal status log bit may not be set when the therma...

Страница 23: ...ng event selection control ESCR MSR P35 X X X Fixed Livelock may occur when bus parking is disabled P36 X X X Fixed CR2 May be incorrect or an incorrect page fault error code may be pushed on to stack...

Страница 24: ...he test access port TAP is sensitive to low clock edge rates and prone to noise coupling onto TCK s rising or falling edges P59 X X X X X X X No Fix Disabling a local APIC disables both logical proces...

Страница 25: ...dating the page table entry P76 X X X Plan Fix A timing marginality in the Arithmetic Logic Unit ALU may cause indeterminate behavior P77 X X X X X X X No Fix With Trap Flag TF asserted FP instruction...

Страница 26: ...d to processor signature instruction feature Flags IA32_MISC_Enable registers Specification Clarifications No SPECIFICATION CLARIFICATIONS P1 Maximum ITCC specification correction P2 Specification Cla...

Страница 27: ...ted see the Summary Table of Changes P3 Invalid opcode 0FFFh requires a ModRM byte Problem Some invalid opcodes require a ModRM byte and other following bytes while others do not The invalid opcode 0F...

Страница 28: ...cause the other half to increment When a performance counter is written and the event counter for the event being monitored is non zero the performance counter will be incremented by the value on tha...

Страница 29: ...recover from the error In the situations described below the processor does not report and or recover from the error s as intended When a transaction is deferred during the snoop phase and subsequentl...

Страница 30: ...he SMM handler If the SMM handler is successfully completed it will attempt to restart the I O instruction but will not have the correct machine state due to the call to the MCE handler This can lead...

Страница 31: ...wing conditions occur 1 An FLD instruction signals a stack overflow or underflow 2 the FLD instruction splits a page boundary or a 64 byte cache line boundary 3 the instruction matches a debug registe...

Страница 32: ...leared set to 0 although the thermal control circuit is active Workaround None at this time Status For the steppings affected see the Summary Table of Changes P14 Processor may timeout waiting for a d...

Страница 33: ...whose instruction bytes are in UC space and which takes an exception 16 FP error exception The processor stalls trying to fetch the bytes of the faulting FP instruction and those following it This pro...

Страница 34: ...nges P22 System bus interrupt messages without data and which receive a Hard failure response may hang the processor Problem When a system bus agent processor or chipset issues an interrupt transactio...

Страница 35: ...issue a BIL snoop to the deferred processor to eliminate the failure conditions Status For the steppings affected see the Summary Table of Changes P25 Multiprocessor boot protocol may not complete wit...

Страница 36: ...re that the page fault handler restarts program execution at the faulting instruction after correcting the paging problem Status For the steppings affected see the Summary Table of Changes P29 Write c...

Страница 37: ...s mode and writes are made to DR6 and DR7 the processor should block writes to the reserved bit locations Due to this erratum the processor may not block these writes This may result in invalid data i...

Страница 38: ...truction but the value of CR2 and the error code pushed on the stack are reflective of the speculative state Intel has not observed this erratum with commercially available software Implication When t...

Страница 39: ...which HT Technology enabled processors are executing extensive self modifying code and branch trace messages are enabled on at least one logical processor the system may hang In this scenario a proce...

Страница 40: ...or will hang Workaround If use of the on demand mode of the processor s TCC is desired in conjunction with STPCLK modulation then assure that STPCLK is not asserted at a 12 5 duty cycle Status For the...

Страница 41: ...em Re mapping the APIC base address from its default can cause conflicts with either I O or special cycle bus transactions Implication Either I O or special cycle bus transactions can be redirected to...

Страница 42: ...bled via power on configuration it should return a value of 51h in EAX 15 8 to indicate that the instruction translation lookaside buffer ITLB has 128 entries On a processor with HT Technology enabled...

Страница 43: ...tinue single step execution after the first breakpoint Problem ITP will not continue in single step execution after the first software breakpoint ITP is unable to reset the resume flag RF bit in the E...

Страница 44: ...ion If this erratum occurs the processor will go into and out of the sleep state without making forward progress since the logical processor will not be able to service any pending event This erratum...

Страница 45: ...cesses are vulnerable The vulnerability of the alignment for any given fault is dependent on the state of other circuitry in the processor Additionally a third fault from an access that occurs sequent...

Страница 46: ...y available software or system Workaround None at this time Status For the steppings affected see the Summary of Table of Changes P68 Modified cache line eviction from L2 cache may result in write bac...

Страница 47: ...f this erratum occurs the system may hang Workaround The pages should not be mapped as either UC or WC and WB at the same time Status For the steppings affected see the Summary of Table of Changes P72...

Страница 48: ...software Workaround The guidelines in the IA 32 Intel Architecture Software Developer s Manual should be followed Status For the steppings affected see the Summary Table of Changes P76 A timing margin...

Страница 49: ...s integer multiple of the corresponding record sizes as recommended in the IA 32 Intel Architecture Software Developer s Manual Volume 3 Status For the steppings affected see the Summary Table of Chan...

Страница 50: ...itten an interrupt may be taken on the new interrupt vector even if the mark bit is set Implication An interrupt may immediately be generated with the new vector when a LVT entry is written even if th...

Страница 51: ...hanged from Reserved to the following definition IA32_MISC_ENABLE Miscellaneous Enables Register bit 24 MSR Address 01A0h Accessed as a Qword Default Value High Dword XXXX XXXXh Low Dword XXXX XXXX XX...

Страница 52: ...criptions of Feature Flag Value 10 Context ID A value of 1 indicates the L1 data cache mode can be set to either adaptive mode or shared mode A value of 0 this feature is not supported See definition...

Страница 53: ...sheet Low Voltage Intel Xeon Processor at 1 60 GHz 2 0 GHz and 2 4 GHz Datasheet and Intel Xeon Processor with 533 MHz Front Side Bus at 2 GHz to 3 20 GHz Datasheet Current table and note Note 7 The m...

Страница 54: ...odels 03H and higher the time stamp counter increments at a constant rate That rate may be set by the maximum core clock to bus clock ratio of the processor or may be set by the frequency at which the...

Страница 55: ...power saving state When Hyper Threading Technology is enabled this these ticks can be measured on a per logical processor basis Non sleep clockticks Measures clock cycles in which the specified physi...

Страница 56: ...46 htm The Documentation Changes listed in this section apply to the following documents Intel Xeon Processor at 1 40 GHz 1 50 GHz 1 70 and 2 GHz Datasheet Order Number 249665 Intel Xeon Processor wit...

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