Re: [RFC PATCH v2 03/22] target/arm: Add PSTATE.ALLINT

[Richard Henderson]

On 2/21/24 15:48, Jinjie Ruan wrote:
> > Why is this split out from env->pstate?
> >
> > The allint bit matches the documentation for SPSR_EL1, which is how
> > env->pstate is documented.  The other exclusions have some performance
> > imperative which I don't see for allint.
>
> It seems to me that allint is a bit like daif, so it is reasonable to
> maintain it separately in ENV as what daif do it.

daif is shared between aa64 pstate and aa32 cpsr; keeping those bits separate means we 
don't have to check the execution state in order to find them.

allint has no aa32 counterpart, so it can live in pstate always.


r~