[PATCH v2 3/3] KVM: arm64: Limit clearing of ID_{AA64PFR0,PFR1}_EL1.GIC to userspace irqchip

[Mark Brown]

On Mon, Nov 10, 2025 at 01:11:05PM +0000, Marc Zyngier wrote:
> Mark Brown <broonie at kernel.org> wrote:

> > Today's next/pending-fixes is showing regressions on a range of physical
> > arm64 platforms (including at least a bunch of A53 systems, an A55 one
> > and an A72 one) in the steal_time selftest which bisect to this patch.
> > We get asserts in the kernel on ID register sets:

> Please name the platforms this fails on. Here, on a sample of one A72
> box, I don't see the issue:

It looks like it's GICv2 that's affected - I'm seeing this on at least
Raspberry Pi 3B+ and 4, Pine 64 Plus and Libretech Potato, Solitude and
Tritum.  The platforms with GICv3 that I have results for (eg, the
Toradex Verdin i.MX8MP and Mallow AM625) all seem fine.
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