Re: [PATCH v16 22/45] KVM: arm64: CCA: Handle RMI_EXIT_RIPAS_CHANGE

Hi Marc,

On 09/07 11:10, Marc Zyngier wrote:

On Mon, 07 Sep 2026 06:05:29 +0100,
Kohei Enju [off-list ref] wrote:

[...]

quoted

Although the root cause is an RMM bug, should we also guard RIPAS_SET
against this no-progress case?

No. We really should *prevent* the kernel from using a known broken
RMM. 

I understand.

Which brings me to one of my long standing request: how to we
enforce the minimum version of RMM that KVM is willing to work with?

We absolutely need to have a hard deprecation mechanism in place
before day-1.

Agreed. Such a mechanism is clearly necessary.

Is there any ongoing work to address this that you are aware of? This
seems like a fairly broad topic that may require a separate discussion.

Thanks,
Kohei

	M.

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