Subject: Re: [PATCH v2 06/11] KVM: arm64: hide MOPS from guests

From: Oliver Upton <[email-masked]>
Date: Mon, 5 Jun 2023 15:45:10 +0000

On Sat, Jun 03, 2023 at 09:42:18AM +0100, Marc Zyngier wrote:
> On Tue, 09 May 2023 15:22:30 +0100,
> Kristina Martsenko <[email-masked]> wrote:
> > 
> > As FEAT_MOPS is not supported in guests yet, hide it from the ID
> > registers for guests.
> > 
> > The MOPS instructions are UNDEFINED in guests as HCRX_EL2.MSCEn is not
> > set in HCRX_GUEST_FLAGS, and will take an exception to EL1 if executed.
> > 
> > Acked-by: Catalin Marinas <[email-masked]>
> > Signed-off-by: Kristina Martsenko <[email-masked]>
> 
> This is very likely to clash with Jing's series that completely
> reworks the whole idreg series, but as long as this is on its own
> branch, we can deal with that.

Yup, we will definitely want to get that ironed out. I'll pull Catalin's
branch when this all gets queued up.

Acked-by: Oliver Upton <[email-masked]>

-- 
Thanks,
Oliver

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