Re: [PATCH v4 02/48] irqchip/gic-v5: Provide OF IRS config frame attrs to KVM

[Marc Zyngier <maz@kernel.org>]

On Sat, 25 Jul 2026 10:06:42 +0100,
Marc Zyngier <maz@kernel.org> wrote:
> 
> On Fri, 24 Jul 2026 11:48:56 +0100,
> Sascha Bischoff <Sascha.Bischoff@arm.com> wrote:
> > 
> > KVM needs to interact with the host IRS in order to, for example, make
> > VMs or VPEs valid. There are two potential approaches here. Either the
> > host irqchip driver can provide an interface, or KVM can interact
> > directly with the host IRS. The latter of these two is chosen as the
> > set of MMIO registers that KVM needs to interact with is orthogonal to
> > the set used by the host irqchip driver (with the exception of some of
> > the read-only IRS_IDRx registers).
> > 
> > Pass KVM a pointer to an IRS config frame - the config frame belonging
> > to ANY IRS is fine as long as one IRS's config frame is used
> > consistently - in struct gic_kvm_info. Additionally, include a flag
> > telling KVM whether the IRS is coherent or non-coherent in order to
> > make sure that KVM can do the correct cache state management, if
> > required.
> > 
> > Only OF (Device Tree) is supported with this change. ACPI is not.
> 
> From what I can see, the ACPI support has completely ignored the KVM
> setup. This would need to be addressed quickly.
> 
> Lorenzo, what's the status of ACPI support?

Bah, that was the followup patch. Ignore me.

	M.

-- 
Jazz isn't dead. It just smells funny.