[PATCH v7 12/41] KVM: arm64: gic-v5: Sanitize ID_AA64PFR2_EL1.GCIE

[Marc Zyngier]

On Mon, 23 Mar 2026 13:37:59 +0000,
Mark Brown <broonie at kernel.org> wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> On Thu, Mar 19, 2026 at 03:52:50PM +0000, Sascha Bischoff wrote:
> > Add in a sanitization function for ID_AA64PFR2_EL1, preserving the
> > already-present behaviour for the FPMR, MTEFAR, and MTESTOREONLY
> > fields. Add sanitisation for the GCIE field, which is set to IMP if
> > the host supports a GICv5 guest and NI, otherwise.
> 
> ...
> 
> > All of this extra work is required to make sure that "legacy" GICv3
> > guests based on QEMU transparently work on compatible GICv5 hosts
> > without modification.
> 
> I'm seeing a regression in -next in set_id_regs on a range of platforms,
> including physical ones like the Toradex Verdin AM62 and i.MX8MP-EVK,
> with a GICv3:

What CPUs do these machines have?

	M.

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