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Re: Why linux-libre-bpf?
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From: |
Felix Lechner |
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Subject: |
Re: Why linux-libre-bpf? |
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Date: |
Sat, 8 Oct 2022 19:26:59 -0700 |
Hi my fellow Guix,
On Sat, Oct 8, 2022 at 5:32 PM <jbranso@dismail.de> wrote:
>
> > CONFIG_BPF_JIT_ALWAYS_ON=y
> > CONFIG_BPF_JIT=y
> >
> > Why is this not the default in regular linux-libre?
Maybe it's historical. I believe JIT used to open a side-channel for
the Spectre attack. [1]
Kind regards
Felix Lechner
[1]
https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html