[PATCH v2 05/11] KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest

[Oliver Upton]

On Thu, Aug 29, 2024 at 12:22:52AM +0100, Mark Brown wrote:
> On Tue, Aug 27, 2024 at 04:25:11PM +0100, Marc Zyngier wrote:
> > In order to be consistent, we shouldn't advertise a GICv3 when none
> > is actually usable by the guest.
> > 
> > Wipe the feature when these conditions apply, and allow the field
> > to be written from userspace.
> > 
> > This now allows us to rewrite the kvm_has_gicv3 helper() in terms
> > of kvm_has_feat(), given that it is always evaluated at runtime.
> 
> This patch, which is in -next, is causing the set_id_regs tests to fail
> on a variety of platforms including synquacer (it looks to be everything
> with GICv3 which wouldn't be surprising but I didn't confirm):

Mind taking this for a spin? Seems to do the trick on my end.

https://lore.kernel.org/kvmarm/20240829004622.3058639-1-oliver.upton@linux.dev/

-- 
Thanks,
Oliver