Sean Christopherson <sean.j.christopherson@xxxxxxxxx> writes:
>
> I'd also be in favor of changing the return type to a boolean. I think
> you alluded to it earlier, the current semantics are quite confusing as they
> invert the normal "return 0 on success".
Yes, will do a follow-up.
KVM/x86 code has an intertwined mix of:
- normal 'int' functions ('0 on success')
- bool functions ('true'/'1' on success)
- 'int' exit handlers ('1'/'0' on success depending if exit to userspace
was required)
- ...
I think we can try to standardize this to:
- 'int' when error is propagated outside of KVM (userspace, other kernel
subsystem,...)
- 'bool' when the function is internal to KVM and the result is binary
('is_exit_required()', 'was_pf_injected()', 'will_have_another_beer()',
...)
- 'enum' for the rest.
And, if there's a good reason for making an exception, require a
comment. (leaving aside everything returning a pointer, of course as
these are self-explanatory -- unless it's 'void *' :-))
>
> For this patch:
>
> Reviewed-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
>
Thank you!
--
Vitaly
