[bug report] KVM: arm64: vgic-v4: Occasionally issue VMOVP to an unmapped VPE on GICv4.1

[Marc Zyngier]

On Mon, 30 Sep 2024 06:18:29 +0100,
Ganapatrao Kulkarni <gankulkarni at os.amperecomputing.com> wrote:
> 
> 
> Hi Kunkun,
> 
> On 29-09-2024 12:48 pm, Kunkun Jiang wrote:
> > Hi all,
> > 
> > I found a problem with occasionally issuing VMOVP to an unmapped VPE
> > on GICv4.1. In my test environment, operating an unmapped VPE will
> > generate RAS, so I found this problem. The detailed analysis is as
> > follows.
> > 
> 
> May I know, what specific RAS errors you are getting?

That'd be IMPDEF, as the GIC architecture doesn't specify how these
errors are reported (see 5.5 "ITS command error encodings" in the
GICv3 spec).

	M.

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