> We don't have a proof of concept for the LSM module. I agree with you that in 
> practice
> it would probably need to implement some kind of "list of files we care 
> about",
> but I do not have an intelligent opinion about that.
> 
> Based on Roberto's comment in a different sub-thread, there could be some 
> ongoing work
> integrating with IMA that might be past the hypothetical stage?

IPE supports fs-verity and dm-verity, and allows to write a policy such as 
"only allow execution of binaries/libraries from fs-verity verified files or 
dm-verity verified volumes):

https://lore.kernel.org/lkml/81d5e825-1ee2-8f6b-cd9d-07b0f8bd3...@linux.microsoft.com/T/
https://microsoft.github.io/ipe/
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