CODEWITHSUNDEEP
armcpu-cachecortex-aspectre
alireza sadeghpour
alireza sadeghpour

Reputation: 689

Cortex-A8 out-of-order execution and Spectre

I am reading about ARM Cortex-A8 processor and found that this processor does not support out-of-order execution. However, in https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability Arm clarified that Cortex-A8 is vulnerable against Spectre-v1 and Spectre-v2 attack.

I wonder how Spectre attack can be implemented without Out Of Order execution. Can anyone help me to find reason of that?

Upvotes: 2

Views: 326

Answers (1)

solidpixel
solidpixel

Reputation: 12099

An in-order processor can speculate ahead of the current point of execution; you don't need a full out-of-order design for Spectre to be a problem.

Upvotes: 4

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