Processors Affected: Speculative Behavior of SWAPGS and Segment Registers

Published: 08/06/2019

Intel expects the following products are potentially affected by the speculative behavior of the SWAPGS and segment registers. For full details, refer to Speculative Behavior of SWAPGS and Segment Registers.

 

Processors Affected
Family/Model Step Processor Families / Processor Number Series Segment Register Write SWAPGS
Missed (Spectre V1 Variant)
SWAPGS Extra
(Spectre V1 Variant)
06_2EH All Intel® Xeon® processor 7500, 6500 series (Nehalem-EX) Yes Yes Yes
06_1EH
06_1FH
All Intel® Core™ i7 and i5 Processors (Nehalem, Nehalem-G) Yes Yes Yes
06_1AH All Intel® Core™ i7 Processor, Intel Xeon processor 3400, 3500, 5500 series (Nehalem-EP) Yes Yes Yes
06_2FH All Intel® Xeon®  Processor E7 Family (Westmere-EX) Yes Yes Yes
06_25H
06_2CH
All Intel® Xeon®  processors 3600, 5600 series, Intel® Core™ i7, i5 and i3 Processors (Westmere, Westmere-EP) Yes Yes Yes
06_2DH All Intel® Xeon®  processor E5 Family based on Intel microarchitecture code name Sandy Bridge, Intel® Core™ i7-39xx Processor Extreme Edition Yes Yes Yes
06_2AH All Intel® Xeon® processor E3-1200 product family; 2nd Generation Intel® Core™ i7, i5, i3 Processors 2xxx Series (Sandy Bridge) Yes Yes Yes
06_3EH All Intel® Xeon® processor E7-8800/4800/2800 v2 product families based on Ivy Bridge-E microarchitecture Yes Yes Yes
06_3EH All Intel® Xeon® processor E5-2600/1600 v2 product families and Intel® Xeon® processor E5-2400 v2 product family based on Ivy Bridge-E microarchitecture, Intel® Core™ i7-49xx Processor Extreme Edition Yes Yes Yes
06_3AH All 3rd Generation Intel® Core™ Processor and Intel® Xeon® processor E3-1200 v2 product family based on Ivy Bridge microarchitecture Yes Yes Yes
06_3FH All Intel® Xeon® processor E5-4600/2600/1600 v3 product families, Intel® Xeon® processor E7 v3 product families based on Haswell-E microarchitecture, Intel® Core™ i7-59xx Processor Extreme Edition Yes Yes Yes
06_3CH
06_45H
06_46H
All 4th Generation Intel® Core™ processor and Intel® Xeon® processor E3-1200 v3 product family based on Haswell microarchitecture Yes Yes Yes
06_56H All Intel® Xeon® processor D-1500 product family based on Broadwell microarchitecture Yes Yes Yes
06_4FH All Intel® Xeon® processor E5 v4 Family based on Broadwell microarchitecture, Intel® Xeon® processor E7 v4 Family, Intel® Core™ i7-69xx Processor Extreme Edition Yes Yes Yes
06_47H All 5th generation Intel® Core™ processors, Intel® Xeon® processor E3-1200 v4 product family based on Broadwell microarchitecture Yes Yes Yes
06_3DH All Intel® Core™ M-5xxx Processor, 5th generation Intel® Core™ processors based on Broadwell microarchitecture Yes Yes Yes
06_55H <=4 Intel® Xeon® Processor Scalable Family based on Skylake microarchitecture  Yes Yes Yes
06_4EH
06_5EH
All 6th generation Intel® Core™ processors and Intel® Xeon® processor E3-1500m v5 product family and E3- 1200 v5 product family based on Skylake microarchitecture Yes Yes Yes
06_8EH <=A 7th/8th generation Intel® Core™ processors based on Kaby/Coffee Lake microarchitecture Yes Yes Yes
06_9EH <=B 7th/8th generation Intel® Core™ processors based on Kaby/Coffee Lake microarchitecture Yes Yes Yes
06_9E 0xC 8th generation Intel® Core™ processors based on Coffee Lake microarchitecture Yes Yes Yes
06_8E 0xB Whiskey Lake(ULT) Yes Yes Yes
06_8E 0xC Whiskey Lake (ULT refresh) Yes Yes Yes
06_9E 0xD Whiskey Lake (Desktop Yes Yes Yes
06_55H 5 2nd Generation Intel® Xeon® Scalable Processors based on Cascade Lake microarchitecture Yes Yes Yes
06_55H 6, 7 2nd Generation Intel® Xeon® Scalable Processors based on Cascade Lake microarchitecture Yes Yes Yes
06_37H
06_4AH,
06_4CH
06_4DH
06_5AH
06_5DH
06_6EH
06_65H
06_75H
06_1CH
06_26H
06_27H
06_35H
06_36H
06_36H
06_7AH
 
All Intel Atom® processors based on the Bonnell, Saltwell, Silvermont, Airmont, Goldmont, and GoldmontPlus microarchitectures No Yes No
06_57H
06_85H
All Intel® Xeon Phi™ processors based on the Knights Mill, Knights Landing, and Knights Corner microarchitectures No Yes No
 
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Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.