RE: [PATCH] x86/sev: Mark snp_abort() noreturn

David Laight
2022-08-25T13:12:58Z

...
> Objtool follows control flow. As you said above, noreturn functions
> behave differently and code-gen after a call to a noreturn function
> stops.

Thinks....

How near is objtool to outputting a list of functions and the
stack offset at which they call something else?

With the 'magic numbers' to track indirect jumps that is very
nearly enough information to do full static stack depth checking.

Recursive calls are a problem - but they ought to be banned
in kernel anyway.

David

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