Zack's Kernel News

Zack's Kernel News

Article from Issue 270/2023
Author(s):

Chronicler Zack Brown reports on the little links that bring us closer within the Linux kernel community.

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Recently, I covered a discussion in which the kernel developers talked about Spectre and Retbleed security issues cropping up on 32-bit kernels running on 64-bit hardware. The upshot was that by and large the developers seemed to feel that users shouldn't do this, and therefore there was no real need for the developers to worry too much about that specific case.

In response to that column, I received the following letter from Gary Dale, which articulated a point of view the kernel folks may not have considered. I'm including the letter here, with permission. Gary told me:

"I believe the kernel developers severely underestimate how many people may be running 32bit kernels on 64bit hardware. I, and a lot of other Raspberry Pi owners, are doing just that for a variety of reasons.

[...]

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