[PATCH 1/3] KVM: arm64: Make ID_PFR1_EL1.GIC writable

[Marc Zyngier]

On Wed, 22 Oct 2025 08:00:47 +0100,
Oliver Upton <oliver.upton at linux.dev> wrote:
> 
> Hey,
> 
> On Mon, Oct 13, 2025 at 09:32:05AM +0100, Marc Zyngier wrote:
> > Similarly to ID_AA64PFR0_EL1.GIC, relax ID_PFR1_EL1.GIC to be writable.
> 
> This looks fine to me, although I do wonder if we should just allow
> userspace to write whatever value it wants to the 32-bit ID registers
> and be done with it.

That's a good point. Nobody really cares about 32bit anyway, and I'd
be happy to just let the VMM write whatever it wants. Might be a bit
harder to backport, but whoever is interested in AArch32 will be able
to do it.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.