[ARM64] status of MTE selftests?

[Mark Brown]

On Mon, May 09, 2022 at 11:59:59AM +0200, Cornelia Huck wrote:
> On Fri, May 06 2022, Mark Brown <broonie at kernel.org> wrote:

> > I would expect them to work, they seemed happy when I was doing
> > the async mode support IIRC and a quick spin with -next in qemu
> > everything seems fine, I'm travelling so don't have the
> > environment for models to hand right now.

> Thanks; I think that points to some setup/config problem on my side,
> then :/ (I ran the selftests under QEMU's tcg emulation, and while it
> looks better, I still get timeouts for check_gcr_el1_cswitch and
> check_user_mem.)

That might just be an actual timeout depending on the preformance of
the host system.

> >> where $AXF contains a kernel at v5.18-rc5-16-g107c948d1d3e[2] and an
> >> initrd built by mbuto[3] from that level with a slightly tweaked "kselftests"
> >> profile (adding /dev/shm).

> > What are you using for EL3 with the model?  Both TF-A and
> > boot-wrapper are in regular use, TF-A gets *way* more testing
> > than boot-wrapper which is mostly used by individual developers.

> I'm building the .axf via boot-wrapper-aarch64 (enabling psci and gicv3,
> if that matters.) Didn't try to make use of TF-A yet beyond the dtb (I'm
> still in the process of getting familiar with the arm64 world, so I'm
> currently starting out with the setups that others had shared with me.)

I'm now back with the models and it turns out that while qemu is happy I
can reproduce what you're seeing with the model, at least as far back as
v5.15 which suggests it's likely to be more operator error than a bug.
Trying to figure it out now.
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