[PATCH] kselftest/arm64: abi: fix SVCR detection

[Weizhao Ouyang]

On Mon, Dec 9, 2024 at 9:51 PM Mark Brown <broonie at kernel.org> wrote:
>
> On Mon, Dec 09, 2024 at 09:26:01PM +0800, Weizhao Ouyang wrote:
>
> > > If we don't have SME we should be skipping over all the SME code and
> > > never even looking at the value of SVCR.  Looking at the current version
> > > of the code it does that, it branches to check_sve_in if SME is not
> > > enabled.
>
> > Yes we should skip it, this is just a minor tweak based on the
> > current implementation, after all, we manually passed its value by
> > svcr_in.
>
> It's a fairly trivial tweak to make...  in any case, it looks like we
> also need the same change in the save path.

Yeah. I have encountered this issue with both QEMU and FVP. I can
help to add a check_sve_in similar to the fp testcase for the abi
testcase.

BR,
Weizhao

>
> > Which latest code version are you referring to? I think check_sve_in
> > is in fp testcase, not in the abi testcase. (checked the -next tree)
>
> Ah, yes sorry.