Re: RETBleed: WARNING: Spectre v2 mitigation leaves CPU vulnerable to RETBleed attacks, data leaks possible!

[Jan Engelhardt]

On Saturday 2022-07-23 23:50, Adam Borowski wrote:
>> > We are booting the i386 kernel on an x86 machine.
>
>[..] And for quite some tasks, halved word
>size (thus ~2/3 memory usage) can overcome register starvation and win
>benchmarks.

So how many benchmarks does a 32-bit userspace with a 32-bit kernel
win over 32-bit userspace with a 64-bit kernel?